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Merge tag 'for-4.17/block-20180402' of git://git.kernel.dk/linux-block

Pull block layer updates from Jens Axboe:
 "It's a pretty quiet round this time, which is nice. This contains:

   - series from Bart, cleaning up the way we set/test/clear atomic
     queue flags.

   - series from Bart, fixing races between gendisk and queue
     registration and removal.

   - set of bcache fixes and improvements from various folks, by way of
     Michael Lyle.

   - set of lightnvm updates from Matias, most of it being the 1.2 to
     2.0 transition.

   - removal of unused DIO flags from Nikolay.

   - blk-mq/sbitmap memory ordering fixes from Omar.

   - divide-by-zero fix for BFQ from Paolo.

   - minor documentation patches from Randy.

   - timeout fix from Tejun.

   - Alpha "can't write a char atomically" fix from Mikulas.

   - set of NVMe fixes by way of Keith.

   - bsg and bsg-lib improvements from Christoph.

   - a few sed-opal fixes from Jonas.

   - cdrom check-disk-change deadlock fix from Maurizio.

   - various little fixes, comment fixes, etc from various folks"

* tag 'for-4.17/block-20180402' of git://git.kernel.dk/linux-block: (139 commits)
  blk-mq: Directly schedule q->timeout_work when aborting a request
  blktrace: fix comment in blktrace_api.h
  lightnvm: remove function name in strings
  lightnvm: pblk: remove some unnecessary NULL checks
  lightnvm: pblk: don't recover unwritten lines
  lightnvm: pblk: implement 2.0 support
  lightnvm: pblk: implement get log report chunk
  lightnvm: pblk: rename ppaf* to addrf*
  lightnvm: pblk: check for supported version
  lightnvm: implement get log report chunk helpers
  lightnvm: make address conversions depend on generic device
  lightnvm: add support for 2.0 address format
  lightnvm: normalize geometry nomenclature
  lightnvm: complete geo structure with maxoc*
  lightnvm: add shorten OCSSD version in geo
  lightnvm: add minor version to generic geometry
  lightnvm: simplify geometry structure
  lightnvm: pblk: refactor init/exit sequences
  lightnvm: Avoid validation of default op value
  lightnvm: centralize permission check for lightnvm ioctl
  ...
This commit is contained in:
Linus Torvalds 2018-04-05 14:27:02 -07:00
commit 3526dd0c78
148 changed files with 4312 additions and 2106 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
Documentation/cdrom/cdrom-standard.tex
View file

@ -234,6 +234,7 @@ struct& cdrom_device_ops\ \{ \hidewidth\cr
&int& (* open)(struct\ cdrom_device_info *, int)\cr
&void& (* release)(struct\ cdrom_device_info *);\cr
&int& (* drive_status)(struct\ cdrom_device_info *, int);\cr
&unsigned\ int& (* check_events)(struct\ cdrom_device_info *, unsigned\ int, int);\cr
&int& (* media_changed)(struct\ cdrom_device_info *, int);\cr
&int& (* tray_move)(struct\ cdrom_device_info *, int);\cr
&int& (* lock_door)(struct\ cdrom_device_info *, int);\cr
@ -245,10 +246,9 @@ struct& cdrom_device_ops\ \{ \hidewidth\cr
&int& (* reset)(struct\ cdrom_device_info *);\cr
&int& (* audio_ioctl)(struct\ cdrom_device_info *, unsigned\ int,
void *{});\cr
&int& (* dev_ioctl)(struct\ cdrom_device_info *, unsigned\ int,
unsigned\ long);\cr
\noalign{\medskip}
&const\ int& capability;& capability flags \cr
&int& (* generic_packet)(struct\ cdrom_device_info *, struct\ packet_command *{});\cr
\};\cr
}
$$
@ -274,19 +274,32 @@ $$
\halign{$#$\ \hfil&$#$\ \hfil&\hbox to 10em{$#$\hss}&
$/*$ \rm# $*/$\hfil\cr
struct& cdrom_device_info\ \{ \hidewidth\cr
& struct\ cdrom_device_ops *& ops;& device operations for this major\cr
& struct\ cdrom_device_info *& next;& next device_info for this major\cr
& const\ struct\ cdrom_device_ops *& ops;& device operations for this major\cr
& struct\ list_head& list;& linked list of all device_info\cr
& struct\ gendisk *& disk;& matching block layer disk\cr
& void *& handle;& driver-dependent data\cr
\noalign{\medskip}
& kdev_t& dev;& device number (incorporates minor)\cr
& int& mask;& mask of capability: disables them \cr
& int& speed;& maximum speed for reading data \cr
& int& capacity;& number of discs in a jukebox \cr
\noalign{\medskip}
&int& options : 30;& options flags \cr
&unsigned\ int& options : 30;& options flags \cr
&unsigned& mc_flags : 2;& media-change buffer flags \cr
&unsigned\ int& vfs_events;& cached events for vfs path\cr
&unsigned\ int& ioctl_events;& cached events for ioctl path\cr
& int& use_count;& number of times device is opened\cr
& char& name[20];& name of the device type\cr
\noalign{\medskip}
&__u8& sanyo_slot : 2;& Sanyo 3-CD changer support\cr
&__u8& keeplocked : 1;& CDROM_LOCKDOOR status\cr
&__u8& reserved : 5;& not used yet\cr
& int& cdda_method;& see CDDA_* flags\cr
&__u8& last_sense;& saves last sense key\cr
&__u8& media_written;& dirty flag, DVD+RW bookkeeping\cr
&unsigned\ short& mmc3_profile;& current MMC3 profile\cr
& int& for_data;& unknown:TBD\cr
& int\ (* exit)\ (struct\ cdrom_device_info *);&& unknown:TBD\cr
& int& mrw_mode_page;& which MRW mode page is in use\cr
\}\cr
}$$
Using this $struct$, a linked list of the registered minor devices is
@ -298,9 +311,7 @@ The $mask$ flags can be used to mask out some of the capabilities listed
in $ops\to capability$, if a specific drive doesn't support a feature
of the driver. The value $speed$ specifies the maximum head-rate of the
drive, measured in units of normal audio speed (176\,kB/sec raw data or
150\,kB/sec file system data). The value $n_discs$ should reflect the
number of discs the drive can hold simultaneously, if it is designed
as a juke-box, or otherwise~1. The parameters are declared $const$
150\,kB/sec file system data). The parameters are declared $const$
because they describe properties of the drive, which don't change after
registration.
@ -1002,7 +1013,7 @@ taken over the torch in maintaining \cdromc\ and integrating much
\cdrom-related code in the 2.1-kernel. Thanks to Scott Snyder and
Gerd Knorr, who were the first to implement this interface for SCSI
and IDE-CD drivers and added many ideas for extension of the data
structures relative to kernel~2.0. Further thanks to Heiko Ei{\sz}feldt,
structures relative to kernel~2.0. Further thanks to Heiko Ei{\ss}feldt,
Thomas Quinot, Jon Tombs, Ken Pizzini, Eberhard M\"onkeberg and Andrew
Kroll, the \linux\ \cdrom\ device driver developers who were kind
enough to give suggestions and criticisms during the writing. Finally

8
Documentation/fault-injection/fault-injection.txt
View file

@ -36,6 +36,14 @@ o fail_function
ALLOW_ERROR_INJECTION() macro, by setting debugfs entries
under /sys/kernel/debug/fail_function. No boot option supported.
o NVMe fault injection
inject NVMe status code and retry flag on devices permitted by setting
debugfs entries under /sys/kernel/debug/nvme*/fault_inject. The default
status code is NVME_SC_INVALID_OPCODE with no retry. The status code and
retry flag can be set via the debugfs.
Configure fault-injection capabilities behavior
-----------------------------------------------

116
Documentation/fault-injection/nvme-fault-injection.txt Normal file
View file

@ -0,0 +1,116 @@
NVMe Fault Injection
====================
Linux's fault injection framework provides a systematic way to support
error injection via debugfs in the /sys/kernel/debug directory. When
enabled, the default NVME_SC_INVALID_OPCODE with no retry will be
injected into the nvme_end_request. Users can change the default status
code and no retry flag via the debugfs. The list of Generic Command
Status can be found in include/linux/nvme.h
Following examples show how to inject an error into the nvme.
First, enable CONFIG_FAULT_INJECTION_DEBUG_FS kernel config,
recompile the kernel. After booting up the kernel, do the
following.
Example 1: Inject default status code with no retry
---------------------------------------------------
mount /dev/nvme0n1 /mnt
echo 1 > /sys/kernel/debug/nvme0n1/fault_inject/times
echo 100 > /sys/kernel/debug/nvme0n1/fault_inject/probability
cp a.file /mnt
Expected Result:
cp: cannot stat ‘/mnt/a.file’: Input/output error
Message from dmesg:
FAULT_INJECTION: forcing a failure.
name fault_inject, interval 1, probability 100, space 0, times 1
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc8+ #2
Hardware name: innotek GmbH VirtualBox/VirtualBox,
BIOS VirtualBox 12/01/2006
Call Trace:
<IRQ>
dump_stack+0x5c/0x7d
should_fail+0x148/0x170
nvme_should_fail+0x2f/0x50 [nvme_core]
nvme_process_cq+0xe7/0x1d0 [nvme]
nvme_irq+0x1e/0x40 [nvme]
__handle_irq_event_percpu+0x3a/0x190
handle_irq_event_percpu+0x30/0x70
handle_irq_event+0x36/0x60
handle_fasteoi_irq+0x78/0x120
handle_irq+0xa7/0x130
? tick_irq_enter+0xa8/0xc0
do_IRQ+0x43/0xc0
common_interrupt+0xa2/0xa2
</IRQ>
RIP: 0010:native_safe_halt+0x2/0x10
RSP: 0018:ffffffff82003e90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffdd
RAX: ffffffff817a10c0 RBX: ffffffff82012480 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 000000008e38ce64 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff82012480
R13: ffffffff82012480 R14: 0000000000000000 R15: 0000000000000000
? __sched_text_end+0x4/0x4
default_idle+0x18/0xf0
do_idle+0x150/0x1d0
cpu_startup_entry+0x6f/0x80
start_kernel+0x4c4/0x4e4
? set_init_arg+0x55/0x55
secondary_startup_64+0xa5/0xb0
print_req_error: I/O error, dev nvme0n1, sector 9240
EXT4-fs error (device nvme0n1): ext4_find_entry:1436:
inode #2: comm cp: reading directory lblock 0
Example 2: Inject default status code with retry
------------------------------------------------
mount /dev/nvme0n1 /mnt
echo 1 > /sys/kernel/debug/nvme0n1/fault_inject/times
echo 100 > /sys/kernel/debug/nvme0n1/fault_inject/probability
echo 1 > /sys/kernel/debug/nvme0n1/fault_inject/status
echo 0 > /sys/kernel/debug/nvme0n1/fault_inject/dont_retry
cp a.file /mnt
Expected Result:
command success without error
Message from dmesg:
FAULT_INJECTION: forcing a failure.
name fault_inject, interval 1, probability 100, space 0, times 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.15.0-rc8+ #4
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
Call Trace:
<IRQ>
dump_stack+0x5c/0x7d
should_fail+0x148/0x170
nvme_should_fail+0x30/0x60 [nvme_core]
nvme_loop_queue_response+0x84/0x110 [nvme_loop]
nvmet_req_complete+0x11/0x40 [nvmet]
nvmet_bio_done+0x28/0x40 [nvmet]
blk_update_request+0xb0/0x310
blk_mq_end_request+0x18/0x60
flush_smp_call_function_queue+0x3d/0xf0
smp_call_function_single_interrupt+0x2c/0xc0
call_function_single_interrupt+0xa2/0xb0
</IRQ>
RIP: 0010:native_safe_halt+0x2/0x10
RSP: 0018:ffffc9000068bec0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04
RAX: ffffffff817a10c0 RBX: ffff88011a3c9680 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 000000008e38c131 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88011a3c9680
R13: ffff88011a3c9680 R14: 0000000000000000 R15: 0000000000000000
? __sched_text_end+0x4/0x4
default_idle+0x18/0xf0
do_idle+0x150/0x1d0
cpu_startup_entry+0x6f/0x80
start_secondary+0x187/0x1e0
secondary_startup_64+0xa5/0xb0

1
MAINTAINERS
View file

@ -2646,6 +2646,7 @@ L: linux-block@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git
S: Maintained
F: block/
F: drivers/block/
F: kernel/trace/blktrace.c
F: lib/sbitmap.c

1
arch/xtensa/platforms/iss/simdisk.c
View file

@ -21,7 +21,6 @@
#include <platform/simcall.h>
#define SIMDISK_MAJOR 240
#define SECTOR_SHIFT 9
#define SIMDISK_MINORS 1
#define MAX_SIMDISK_COUNT 10

25
block/bfq-iosched.c
View file

@ -201,7 +201,20 @@ static struct kmem_cache *bfq_pool;
/* Target observation time interval for a peak-rate update (ns) */
#define BFQ_RATE_REF_INTERVAL NSEC_PER_SEC
/* Shift used for peak rate fixed precision calculations. */
/*
* Shift used for peak-rate fixed precision calculations.
* With
* - the current shift: 16 positions
* - the current type used to store rate: u32
* - the current unit of measure for rate: [sectors/usec], or, more precisely,
* [(sectors/usec) / 2^BFQ_RATE_SHIFT] to take into account the shift,
* the range of rates that can be stored is
* [1 / 2^BFQ_RATE_SHIFT, 2^(32 - BFQ_RATE_SHIFT)] sectors/usec =
* [1 / 2^16, 2^16] sectors/usec = [15e-6, 65536] sectors/usec =
* [15, 65G] sectors/sec
* Which, assuming a sector size of 512B, corresponds to a range of
* [7.5K, 33T] B/sec
*/
#define BFQ_RATE_SHIFT 16
/*
@ -2637,6 +2650,16 @@ static void bfq_update_rate_reset(struct bfq_data *bfqd, struct request *rq)
rate /= divisor; /* smoothing constant alpha = 1/divisor */
bfqd->peak_rate += rate;
/*
* For a very slow device, bfqd->peak_rate can reach 0 (see
* the minimum representable values reported in the comments
* on BFQ_RATE_SHIFT). Push to 1 if this happens, to avoid
* divisions by zero where bfqd->peak_rate is used as a
* divisor.
*/
bfqd->peak_rate = max_t(u32, 1, bfqd->peak_rate);
update_thr_responsiveness_params(bfqd);
reset_computation:

2
block/bfq-iosched.h
View file

@ -499,7 +499,7 @@ struct bfq_data {
u64 delta_from_first;
/*
* Current estimate of the device peak rate, measured in
* [BFQ_RATE_SHIFT * sectors/usec]. The left-shift by
* [(sectors/usec) / 2^BFQ_RATE_SHIFT]. The left-shift by
* BFQ_RATE_SHIFT is performed to increase precision in
* fixed-point calculations.
*/

4
block/bio.c
View file

@ -43,9 +43,9 @@
* break badly! cannot be bigger than what you can fit into an
* unsigned short
*/
#define BV(x) { .nr_vecs = x, .name = "biovec-"__stringify(x) }
#define BV(x, n) { .nr_vecs = x, .name = "biovec-"#n }
static struct biovec_slab bvec_slabs[BVEC_POOL_NR] __read_mostly = {
BV(1), BV(4), BV(16), BV(64), BV(128), BV(BIO_MAX_PAGES),
BV(1, 1), BV(4, 4), BV(16, 16), BV(64, 64), BV(128, 128), BV(BIO_MAX_PAGES, max),
};
#undef BV

78
block/blk-cgroup.c
View file

@ -307,11 +307,28 @@ struct blkcg_gq *blkg_lookup_create(struct blkcg *blkcg,
}
}
static void blkg_pd_offline(struct blkcg_gq *blkg)
{
int i;
lockdep_assert_held(blkg->q->queue_lock);
lockdep_assert_held(&blkg->blkcg->lock);
for (i = 0; i < BLKCG_MAX_POLS; i++) {
struct blkcg_policy *pol = blkcg_policy[i];
if (blkg->pd[i] && !blkg->pd[i]->offline &&
pol->pd_offline_fn) {
pol->pd_offline_fn(blkg->pd[i]);
blkg->pd[i]->offline = true;
}
}
}
static void blkg_destroy(struct blkcg_gq *blkg)
{
struct blkcg *blkcg = blkg->blkcg;
struct blkcg_gq *parent = blkg->parent;
int i;
lockdep_assert_held(blkg->q->queue_lock);
lockdep_assert_held(&blkcg->lock);
@ -320,13 +337,6 @@ static void blkg_destroy(struct blkcg_gq *blkg)
WARN_ON_ONCE(list_empty(&blkg->q_node));
WARN_ON_ONCE(hlist_unhashed(&blkg->blkcg_node));
for (i = 0; i < BLKCG_MAX_POLS; i++) {
struct blkcg_policy *pol = blkcg_policy[i];
if (blkg->pd[i] && pol->pd_offline_fn)
pol->pd_offline_fn(blkg->pd[i]);
}
if (parent) {
blkg_rwstat_add_aux(&parent->stat_bytes, &blkg->stat_bytes);
blkg_rwstat_add_aux(&parent->stat_ios, &blkg->stat_ios);
@ -369,6 +379,7 @@ static void blkg_destroy_all(struct request_queue *q)
struct blkcg *blkcg = blkg->blkcg;
spin_lock(&blkcg->lock);
blkg_pd_offline(blkg);
blkg_destroy(blkg);
spin_unlock(&blkcg->lock);
}
@ -995,25 +1006,25 @@ static struct cftype blkcg_legacy_files[] = {
* @css: css of interest
*
* This function is called when @css is about to go away and responsible
* for shooting down all blkgs associated with @css. blkgs should be
* removed while holding both q and blkcg locks. As blkcg lock is nested
* inside q lock, this function performs reverse double lock dancing.
* for offlining all blkgs pd and killing all wbs associated with @css.
* blkgs pd offline should be done while holding both q and blkcg locks.
* As blkcg lock is nested inside q lock, this function performs reverse
* double lock dancing.
*
* This is the blkcg counterpart of ioc_release_fn().
*/
static void blkcg_css_offline(struct cgroup_subsys_state *css)
{
struct blkcg *blkcg = css_to_blkcg(css);
struct blkcg_gq *blkg;
spin_lock_irq(&blkcg->lock);
while (!hlist_empty(&blkcg->blkg_list)) {
struct blkcg_gq *blkg = hlist_entry(blkcg->blkg_list.first,
struct blkcg_gq, blkcg_node);
hlist_for_each_entry(blkg, &blkcg->blkg_list, blkcg_node) {
struct request_queue *q = blkg->q;
if (spin_trylock(q->queue_lock)) {
blkg_destroy(blkg);
blkg_pd_offline(blkg);
spin_unlock(q->queue_lock);
} else {
spin_unlock_irq(&blkcg->lock);
@ -1027,11 +1038,43 @@ static void blkcg_css_offline(struct cgroup_subsys_state *css)
wb_blkcg_offline(blkcg);
}
/**
* blkcg_destroy_all_blkgs - destroy all blkgs associated with a blkcg
* @blkcg: blkcg of interest
*
* This function is called when blkcg css is about to free and responsible for
* destroying all blkgs associated with @blkcg.
* blkgs should be removed while holding both q and blkcg locks. As blkcg lock
* is nested inside q lock, this function performs reverse double lock dancing.
*/
static void blkcg_destroy_all_blkgs(struct blkcg *blkcg)
{
spin_lock_irq(&blkcg->lock);
while (!hlist_empty(&blkcg->blkg_list)) {
struct blkcg_gq *blkg = hlist_entry(blkcg->blkg_list.first,
struct blkcg_gq,
blkcg_node);
struct request_queue *q = blkg->q;
if (spin_trylock(q->queue_lock)) {
blkg_destroy(blkg);
spin_unlock(q->queue_lock);
} else {
spin_unlock_irq(&blkcg->lock);
cpu_relax();
spin_lock_irq(&blkcg->lock);
}
}
spin_unlock_irq(&blkcg->lock);
}
static void blkcg_css_free(struct cgroup_subsys_state *css)
{
struct blkcg *blkcg = css_to_blkcg(css);
int i;
blkcg_destroy_all_blkgs(blkcg);
mutex_lock(&blkcg_pol_mutex);
list_del(&blkcg->all_blkcgs_node);
@ -1371,8 +1414,11 @@ void blkcg_deactivate_policy(struct request_queue *q,
spin_lock(&blkg->blkcg->lock);
if (blkg->pd[pol->plid]) {
if (pol->pd_offline_fn)
if (!blkg->pd[pol->plid]->offline &&
pol->pd_offline_fn) {
pol->pd_offline_fn(blkg->pd[pol->plid]);
blkg->pd[pol->plid]->offline = true;
}
pol->pd_free_fn(blkg->pd[pol->plid]);
blkg->pd[pol->plid] = NULL;
}

250
block/blk-core.c
View file

@ -71,6 +71,78 @@ struct kmem_cache *blk_requestq_cachep;
*/
static struct workqueue_struct *kblockd_workqueue;
/**
* blk_queue_flag_set - atomically set a queue flag
* @flag: flag to be set
* @q: request queue
*/
void blk_queue_flag_set(unsigned int flag, struct request_queue *q)
{
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
queue_flag_set(flag, q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
EXPORT_SYMBOL(blk_queue_flag_set);
/**
* blk_queue_flag_clear - atomically clear a queue flag
* @flag: flag to be cleared
* @q: request queue
*/
void blk_queue_flag_clear(unsigned int flag, struct request_queue *q)
{
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
queue_flag_clear(flag, q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
EXPORT_SYMBOL(blk_queue_flag_clear);
/**
* blk_queue_flag_test_and_set - atomically test and set a queue flag
* @flag: flag to be set
* @q: request queue
*
* Returns the previous value of @flag - 0 if the flag was not set and 1 if
* the flag was already set.
*/
bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q)
{
unsigned long flags;
bool res;
spin_lock_irqsave(q->queue_lock, flags);
res = queue_flag_test_and_set(flag, q);
spin_unlock_irqrestore(q->queue_lock, flags);
return res;
}
EXPORT_SYMBOL_GPL(blk_queue_flag_test_and_set);
/**
* blk_queue_flag_test_and_clear - atomically test and clear a queue flag
* @flag: flag to be cleared
* @q: request queue
*
* Returns the previous value of @flag - 0 if the flag was not set and 1 if
* the flag was set.
*/
bool blk_queue_flag_test_and_clear(unsigned int flag, struct request_queue *q)
{
unsigned long flags;
bool res;
spin_lock_irqsave(q->queue_lock, flags);
res = queue_flag_test_and_clear(flag, q);
spin_unlock_irqrestore(q->queue_lock, flags);
return res;
}
EXPORT_SYMBOL_GPL(blk_queue_flag_test_and_clear);
static void blk_clear_congested(struct request_list *rl, int sync)
{
#ifdef CONFIG_CGROUP_WRITEBACK
@ -361,25 +433,14 @@ EXPORT_SYMBOL(blk_sync_queue);
*/
int blk_set_preempt_only(struct request_queue *q)
{
unsigned long flags;
int res;
spin_lock_irqsave(q->queue_lock, flags);
res = queue_flag_test_and_set(QUEUE_FLAG_PREEMPT_ONLY, q);
spin_unlock_irqrestore(q->queue_lock, flags);
return res;
return blk_queue_flag_test_and_set(QUEUE_FLAG_PREEMPT_ONLY, q);
}
EXPORT_SYMBOL_GPL(blk_set_preempt_only);
void blk_clear_preempt_only(struct request_queue *q)
{
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
queue_flag_clear(QUEUE_FLAG_PREEMPT_ONLY, q);
blk_queue_flag_clear(QUEUE_FLAG_PREEMPT_ONLY, q);
wake_up_all(&q->mq_freeze_wq);
spin_unlock_irqrestore(q->queue_lock, flags);
}
EXPORT_SYMBOL_GPL(blk_clear_preempt_only);
@ -629,9 +690,7 @@ EXPORT_SYMBOL_GPL(blk_queue_bypass_end);
void blk_set_queue_dying(struct request_queue *q)
{
spin_lock_irq(q->queue_lock);
queue_flag_set(QUEUE_FLAG_DYING, q);
spin_unlock_irq(q->queue_lock);
blk_queue_flag_set(QUEUE_FLAG_DYING, q);
/*
* When queue DYING flag is set, we need to block new req
@ -719,6 +778,37 @@ void blk_cleanup_queue(struct request_queue *q)
del_timer_sync(&q->backing_dev_info->laptop_mode_wb_timer);
blk_sync_queue(q);
/*
* I/O scheduler exit is only safe after the sysfs scheduler attribute
* has been removed.
*/
WARN_ON_ONCE(q->kobj.state_in_sysfs);
/*
* Since the I/O scheduler exit code may access cgroup information,
* perform I/O scheduler exit before disassociating from the block
* cgroup controller.
*/
if (q->elevator) {
ioc_clear_queue(q);
elevator_exit(q, q->elevator);
q->elevator = NULL;
}
/*
* Remove all references to @q from the block cgroup controller before
* restoring @q->queue_lock to avoid that restoring this pointer causes
* e.g. blkcg_print_blkgs() to crash.
*/
blkcg_exit_queue(q);
/*
* Since the cgroup code may dereference the @q->backing_dev_info
* pointer, only decrease its reference count after having removed the
* association with the block cgroup controller.
*/
bdi_put(q->backing_dev_info);
if (q->mq_ops)
blk_mq_free_queue(q);
percpu_ref_exit(&q->q_usage_counter);
@ -810,7 +900,7 @@ void blk_exit_rl(struct request_queue *q, struct request_list *rl)
struct request_queue *blk_alloc_queue(gfp_t gfp_mask)
{
return blk_alloc_queue_node(gfp_mask, NUMA_NO_NODE);
return blk_alloc_queue_node(gfp_mask, NUMA_NO_NODE, NULL);
}
EXPORT_SYMBOL(blk_alloc_queue);
@ -827,7 +917,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags)
bool success = false;
int ret;
rcu_read_lock_sched();
rcu_read_lock();
if (percpu_ref_tryget_live(&q->q_usage_counter)) {
/*
* The code that sets the PREEMPT_ONLY flag is
@ -840,7 +930,7 @@ int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags)
percpu_ref_put(&q->q_usage_counter);
}
}
rcu_read_unlock_sched();
rcu_read_unlock();
if (success)
return 0;
@ -888,7 +978,21 @@ static void blk_rq_timed_out_timer(struct timer_list *t)
kblockd_schedule_work(&q->timeout_work);
}
struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
/**
* blk_alloc_queue_node - allocate a request queue
* @gfp_mask: memory allocation flags
* @node_id: NUMA node to allocate memory from
* @lock: For legacy queues, pointer to a spinlock that will be used to e.g.
* serialize calls to the legacy .request_fn() callback. Ignored for
* blk-mq request queues.
*
* Note: pass the queue lock as the third argument to this function instead of
* setting the queue lock pointer explicitly to avoid triggering a sporadic
* crash in the blkcg code. This function namely calls blkcg_init_queue() and
* the queue lock pointer must be set before blkcg_init_queue() is called.
*/
struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id,
spinlock_t *lock)
{
struct request_queue *q;
@ -939,11 +1043,8 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
mutex_init(&q->sysfs_lock);
spin_lock_init(&q->__queue_lock);
/*
* By default initialize queue_lock to internal lock and driver can
* override it later if need be.
*/
q->queue_lock = &q->__queue_lock;
if (!q->mq_ops)
q->queue_lock = lock ? : &q->__queue_lock;
/*
* A queue starts its life with bypass turned on to avoid
@ -952,7 +1053,7 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
* registered by blk_register_queue().
*/
q->bypass_depth = 1;
__set_bit(QUEUE_FLAG_BYPASS, &q->queue_flags);
queue_flag_set_unlocked(QUEUE_FLAG_BYPASS, q);
init_waitqueue_head(&q->mq_freeze_wq);
@ -1030,13 +1131,11 @@ blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
{
struct request_queue *q;
q = blk_alloc_queue_node(GFP_KERNEL, node_id);
q = blk_alloc_queue_node(GFP_KERNEL, node_id, lock);
if (!q)
return NULL;
q->request_fn = rfn;
if (lock)
q->queue_lock = lock;
if (blk_init_allocated_queue(q) < 0) {
blk_cleanup_queue(q);
return NULL;
@ -2023,7 +2122,7 @@ static blk_qc_t blk_queue_bio(struct request_queue *q, struct bio *bio)
return BLK_QC_T_NONE;
}
static void handle_bad_sector(struct bio *bio)
static void handle_bad_sector(struct bio *bio, sector_t maxsector)
{
char b[BDEVNAME_SIZE];
@ -2031,7 +2130,7 @@ static void handle_bad_sector(struct bio *bio)
printk(KERN_INFO "%s: rw=%d, want=%Lu, limit=%Lu\n",
bio_devname(bio, b), bio->bi_opf,
(unsigned long long)bio_end_sector(bio),
(long long)get_capacity(bio->bi_disk));
(long long)maxsector);
}
#ifdef CONFIG_FAIL_MAKE_REQUEST
@ -2092,68 +2191,59 @@ static noinline int should_fail_bio(struct bio *bio)
}
ALLOW_ERROR_INJECTION(should_fail_bio, ERRNO);
/*
* Check whether this bio extends beyond the end of the device or partition.
* This may well happen - the kernel calls bread() without checking the size of
* the device, e.g., when mounting a file system.
*/
static inline int bio_check_eod(struct bio *bio, sector_t maxsector)
{
unsigned int nr_sectors = bio_sectors(bio);
if (nr_sectors && maxsector &&
(nr_sectors > maxsector ||
bio->bi_iter.bi_sector > maxsector - nr_sectors)) {
handle_bad_sector(bio, maxsector);
return -EIO;
}
return 0;
}
/*
* Remap block n of partition p to block n+start(p) of the disk.
*/
static inline int blk_partition_remap(struct bio *bio)
{
struct hd_struct *p;
int ret = 0;
int ret = -EIO;
rcu_read_lock();
p = __disk_get_part(bio->bi_disk, bio->bi_partno);
if (unlikely(!p || should_fail_request(p, bio->bi_iter.bi_size) ||
bio_check_ro(bio, p))) {
ret = -EIO;
if (unlikely(!p))
goto out;
if (unlikely(should_fail_request(p, bio->bi_iter.bi_size)))
goto out;
if (unlikely(bio_check_ro(bio, p)))
goto out;
}
/*
* Zone reset does not include bi_size so bio_sectors() is always 0.
* Include a test for the reset op code and perform the remap if needed.
*/
if (!bio_sectors(bio) && bio_op(bio) != REQ_OP_ZONE_RESET)
goto out;
bio->bi_iter.bi_sector += p->start_sect;
bio->bi_partno = 0;
trace_block_bio_remap(bio->bi_disk->queue, bio, part_devt(p),
bio->bi_iter.bi_sector - p->start_sect);
if (bio_sectors(bio) || bio_op(bio) == REQ_OP_ZONE_RESET) {
if (bio_check_eod(bio, part_nr_sects_read(p)))
goto out;
bio->bi_iter.bi_sector += p->start_sect;
bio->bi_partno = 0;
trace_block_bio_remap(bio->bi_disk->queue, bio, part_devt(p),
bio->bi_iter.bi_sector - p->start_sect);
}
ret = 0;
out:
rcu_read_unlock();
return ret;
}
/*
* Check whether this bio extends beyond the end of the device.
*/
static inline int bio_check_eod(struct bio *bio, unsigned int nr_sectors)
{
sector_t maxsector;
if (!nr_sectors)
return 0;
/* Test device or partition size, when known. */
maxsector = get_capacity(bio->bi_disk);
if (maxsector) {
sector_t sector = bio->bi_iter.bi_sector;
if (maxsector < nr_sectors || maxsector - nr_sectors < sector) {
/*
* This may well happen - the kernel calls bread()
* without checking the size of the device, e.g., when
* mounting a device.
*/
handle_bad_sector(bio);
return 1;
}
}
return 0;
}
static noinline_for_stack bool
generic_make_request_checks(struct bio *bio)
{
@ -2164,9 +2254,6 @@ generic_make_request_checks(struct bio *bio)
might_sleep();
if (bio_check_eod(bio, nr_sectors))
goto end_io;
q = bio->bi_disk->queue;
if (unlikely(!q)) {
printk(KERN_ERR
@ -2186,17 +2273,16 @@ generic_make_request_checks(struct bio *bio)
if (should_fail_bio(bio))
goto end_io;
if (!bio->bi_partno) {
if (unlikely(bio_check_ro(bio, &bio->bi_disk->part0)))
if (bio->bi_partno) {
if (unlikely(blk_partition_remap(bio)))
goto end_io;
} else {
if (blk_partition_remap(bio))
if (unlikely(bio_check_ro(bio, &bio->bi_disk->part0)))
goto end_io;
if (unlikely(bio_check_eod(bio, get_capacity(bio->bi_disk))))
goto end_io;
}
if (bio_check_eod(bio, nr_sectors))
goto end_io;
/*
* Filter flush bio's early so that make_request based
* drivers without flush support don't have to worry

150
block/blk-mq-debugfs.c
View file

@ -24,6 +24,64 @@
#include "blk-mq-debugfs.h"
#include "blk-mq-tag.h"
static void print_stat(struct seq_file *m, struct blk_rq_stat *stat)
{
if (stat->nr_samples) {
seq_printf(m, "samples=%d, mean=%lld, min=%llu, max=%llu",
stat->nr_samples, stat->mean, stat->min, stat->max);
} else {
seq_puts(m, "samples=0");
}
}
static int queue_poll_stat_show(void *data, struct seq_file *m)
{
struct request_queue *q = data;
int bucket;
for (bucket = 0; bucket < BLK_MQ_POLL_STATS_BKTS/2; bucket++) {
seq_printf(m, "read (%d Bytes): ", 1 << (9+bucket));
print_stat(m, &q->poll_stat[2*bucket]);
seq_puts(m, "\n");
seq_printf(m, "write (%d Bytes): ", 1 << (9+bucket));
print_stat(m, &q->poll_stat[2*bucket+1]);
seq_puts(m, "\n");
}
return 0;
}
static void *queue_requeue_list_start(struct seq_file *m, loff_t *pos)
__acquires(&q->requeue_lock)
{
struct request_queue *q = m->private;
spin_lock_irq(&q->requeue_lock);
return seq_list_start(&q->requeue_list, *pos);
}
static void *queue_requeue_list_next(struct seq_file *m, void *v, loff_t *pos)
{
struct request_queue *q = m->private;
return seq_list_next(v, &q->requeue_list, pos);
}
static void queue_requeue_list_stop(struct seq_file *m, void *v)
__releases(&q->requeue_lock)
{
struct request_queue *q = m->private;
spin_unlock_irq(&q->requeue_lock);
}
static const struct seq_operations queue_requeue_list_seq_ops = {
.start = queue_requeue_list_start,
.next = queue_requeue_list_next,
.stop = queue_requeue_list_stop,
.show = blk_mq_debugfs_rq_show,
};
static int blk_flags_show(struct seq_file *m, const unsigned long flags,
const char *const *flag_name, int flag_name_count)
{
@ -125,16 +183,6 @@ static ssize_t queue_state_write(void *data, const char __user *buf,
return count;
}
static void print_stat(struct seq_file *m, struct blk_rq_stat *stat)
{
if (stat->nr_samples) {
seq_printf(m, "samples=%d, mean=%lld, min=%llu, max=%llu",
stat->nr_samples, stat->mean, stat->min, stat->max);
} else {
seq_puts(m, "samples=0");
}
}
static int queue_write_hint_show(void *data, struct seq_file *m)
{
struct request_queue *q = data;
@ -158,23 +206,30 @@ static ssize_t queue_write_hint_store(void *data, const char __user *buf,
return count;
}
static int queue_poll_stat_show(void *data, struct seq_file *m)
static int queue_zone_wlock_show(void *data, struct seq_file *m)
{
struct request_queue *q = data;
int bucket;
unsigned int i;
for (bucket = 0; bucket < BLK_MQ_POLL_STATS_BKTS/2; bucket++) {
seq_printf(m, "read (%d Bytes): ", 1 << (9+bucket));
print_stat(m, &q->poll_stat[2*bucket]);
seq_puts(m, "\n");
if (!q->seq_zones_wlock)
return 0;
for (i = 0; i < blk_queue_nr_zones(q); i++)
if (test_bit(i, q->seq_zones_wlock))
seq_printf(m, "%u\n", i);
seq_printf(m, "write (%d Bytes): ", 1 << (9+bucket));
print_stat(m, &q->poll_stat[2*bucket+1]);
seq_puts(m, "\n");
}
return 0;
}
static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = {
{ "poll_stat", 0400, queue_poll_stat_show },
{ "requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops },
{ "state", 0600, queue_state_show, queue_state_write },
{ "write_hints", 0600, queue_write_hint_show, queue_write_hint_store },
{ "zone_wlock", 0400, queue_zone_wlock_show, NULL },
{ },
};
#define HCTX_STATE_NAME(name) [BLK_MQ_S_##name] = #name
static const char *const hctx_state_name[] = {
HCTX_STATE_NAME(STOPPED),
@ -295,6 +350,20 @@ static const char *const rqf_name[] = {
};
#undef RQF_NAME
static const char *const blk_mq_rq_state_name_array[] = {
[MQ_RQ_IDLE] = "idle",
[MQ_RQ_IN_FLIGHT] = "in_flight",
[MQ_RQ_COMPLETE] = "complete",
};
static const char *blk_mq_rq_state_name(enum mq_rq_state rq_state)
{
if (WARN_ON_ONCE((unsigned int)rq_state >
ARRAY_SIZE(blk_mq_rq_state_name_array)))
return "(?)";
return blk_mq_rq_state_name_array[rq_state];
}
int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq)
{
const struct blk_mq_ops *const mq_ops = rq->q->mq_ops;
@ -311,7 +380,7 @@ int __blk_mq_debugfs_rq_show(struct seq_file *m, struct request *rq)
seq_puts(m, ", .rq_flags=");
blk_flags_show(m, (__force unsigned int)rq->rq_flags, rqf_name,
ARRAY_SIZE(rqf_name));
seq_printf(m, ", complete=%d", blk_rq_is_complete(rq));
seq_printf(m, ", .state=%s", blk_mq_rq_state_name(blk_mq_rq_state(rq)));
seq_printf(m, ", .tag=%d, .internal_tag=%d", rq->tag,
rq->internal_tag);
if (mq_ops->show_rq)
@ -327,37 +396,6 @@ int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
}
EXPORT_SYMBOL_GPL(blk_mq_debugfs_rq_show);
static void *queue_requeue_list_start(struct seq_file *m, loff_t *pos)
__acquires(&q->requeue_lock)
{
struct request_queue *q = m->private;
spin_lock_irq(&q->requeue_lock);
return seq_list_start(&q->requeue_list, *pos);
}
static void *queue_requeue_list_next(struct seq_file *m, void *v, loff_t *pos)
{
struct request_queue *q = m->private;
return seq_list_next(v, &q->requeue_list, pos);
}
static void queue_requeue_list_stop(struct seq_file *m, void *v)
__releases(&q->requeue_lock)
{
struct request_queue *q = m->private;
spin_unlock_irq(&q->requeue_lock);
}
static const struct seq_operations queue_requeue_list_seq_ops = {
.start = queue_requeue_list_start,
.next = queue_requeue_list_next,
.stop = queue_requeue_list_stop,
.show = blk_mq_debugfs_rq_show,
};
static void *hctx_dispatch_start(struct seq_file *m, loff_t *pos)
__acquires(&hctx->lock)
{
@ -747,14 +785,6 @@ static const struct file_operations blk_mq_debugfs_fops = {
.release = blk_mq_debugfs_release,
};
static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = {
{"poll_stat", 0400, queue_poll_stat_show},
{"requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops},
{"state", 0600, queue_state_show, queue_state_write},
{"write_hints", 0600, queue_write_hint_show, queue_write_hint_store},
{},
};
static const struct blk_mq_debugfs_attr blk_mq_debugfs_hctx_attrs[] = {
{"state", 0400, hctx_state_show},
{"flags", 0400, hctx_flags_show},

6
block/blk-mq-pci.c
View file

@ -21,6 +21,7 @@
* blk_mq_pci_map_queues - provide a default queue mapping for PCI device
* @set: tagset to provide the mapping for
* @pdev: PCI device associated with @set.
* @offset: Offset to use for the pci irq vector
*
* This function assumes the PCI device @pdev has at least as many available
* interrupt vectors as @set has queues. It will then query the vector
@ -28,13 +29,14 @@
* that maps a queue to the CPUs that have irq affinity for the corresponding
* vector.
*/
int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev)
int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev,
int offset)
{
const struct cpumask *mask;
unsigned int queue, cpu;
for (queue = 0; queue < set->nr_hw_queues; queue++) {
mask = pci_irq_get_affinity(pdev, queue);
mask = pci_irq_get_affinity(pdev, queue + offset);
if (!mask)
goto fallback;

20
block/blk-mq.c
View file

@ -194,11 +194,7 @@ EXPORT_SYMBOL_GPL(blk_mq_unfreeze_queue);
*/
void blk_mq_quiesce_queue_nowait(struct request_queue *q)
{
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
queue_flag_set(QUEUE_FLAG_QUIESCED, q);
spin_unlock_irqrestore(q->queue_lock, flags);
blk_queue_flag_set(QUEUE_FLAG_QUIESCED, q);
}
EXPORT_SYMBOL_GPL(blk_mq_quiesce_queue_nowait);
@ -239,11 +235,7 @@ EXPORT_SYMBOL_GPL(blk_mq_quiesce_queue);
*/
void blk_mq_unquiesce_queue(struct request_queue *q)
{
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
queue_flag_clear(QUEUE_FLAG_QUIESCED, q);
spin_unlock_irqrestore(q->queue_lock, flags);
blk_queue_flag_clear(QUEUE_FLAG_QUIESCED, q);
/* dispatch requests which are inserted during quiescing */
blk_mq_run_hw_queues(q, true);
@ -986,9 +978,9 @@ static bool flush_busy_ctx(struct sbitmap *sb, unsigned int bitnr, void *data)
struct blk_mq_hw_ctx *hctx = flush_data->hctx;
struct blk_mq_ctx *ctx = hctx->ctxs[bitnr];
sbitmap_clear_bit(sb, bitnr);
spin_lock(&ctx->lock);
list_splice_tail_init(&ctx->rq_list, flush_data->list);
sbitmap_clear_bit(sb, bitnr);
spin_unlock(&ctx->lock);
return true;
}
@ -2556,7 +2548,7 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set)
{
struct request_queue *uninit_q, *q;
uninit_q = blk_alloc_queue_node(GFP_KERNEL, set->numa_node);
uninit_q = blk_alloc_queue_node(GFP_KERNEL, set->numa_node, NULL);
if (!uninit_q)
return ERR_PTR(-ENOMEM);
@ -2678,7 +2670,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
q->queue_flags |= QUEUE_FLAG_MQ_DEFAULT;
if (!(set->flags & BLK_MQ_F_SG_MERGE))
q->queue_flags |= 1 << QUEUE_FLAG_NO_SG_MERGE;
queue_flag_set_unlocked(QUEUE_FLAG_NO_SG_MERGE, q);
q->sg_reserved_size = INT_MAX;
@ -3005,7 +2997,7 @@ EXPORT_SYMBOL_GPL(blk_mq_update_nr_hw_queues);
static bool blk_poll_stats_enable(struct request_queue *q)
{
if (test_bit(QUEUE_FLAG_POLL_STATS, &q->queue_flags) ||
test_and_set_bit(QUEUE_FLAG_POLL_STATS, &q->queue_flags))
blk_queue_flag_test_and_set(QUEUE_FLAG_POLL_STATS, q))
return true;
blk_stat_add_callback(q, q->poll_cb);
return false;

6
block/blk-settings.c
View file

@ -859,12 +859,10 @@ EXPORT_SYMBOL(blk_queue_update_dma_alignment);
void blk_queue_flush_queueable(struct request_queue *q, bool queueable)
{
spin_lock_irq(q->queue_lock);
if (queueable)
clear_bit(QUEUE_FLAG_FLUSH_NQ, &q->queue_flags);
blk_queue_flag_clear(QUEUE_FLAG_FLUSH_NQ, q);
else
set_bit(QUEUE_FLAG_FLUSH_NQ, &q->queue_flags);
spin_unlock_irq(q->queue_lock);
blk_queue_flag_set(QUEUE_FLAG_FLUSH_NQ, q);
}
EXPORT_SYMBOL_GPL(blk_queue_flush_queueable);

6
block/blk-stat.c
View file

@ -152,7 +152,7 @@ void blk_stat_add_callback(struct request_queue *q,
spin_lock(&q->stats->lock);
list_add_tail_rcu(&cb->list, &q->stats->callbacks);
set_bit(QUEUE_FLAG_STATS, &q->queue_flags);
blk_queue_flag_set(QUEUE_FLAG_STATS, q);
spin_unlock(&q->stats->lock);
}
EXPORT_SYMBOL_GPL(blk_stat_add_callback);
@ -163,7 +163,7 @@ void blk_stat_remove_callback(struct request_queue *q,
spin_lock(&q->stats->lock);
list_del_rcu(&cb->list);
if (list_empty(&q->stats->callbacks) && !q->stats->enable_accounting)
clear_bit(QUEUE_FLAG_STATS, &q->queue_flags);
blk_queue_flag_clear(QUEUE_FLAG_STATS, q);
spin_unlock(&q->stats->lock);
del_timer_sync(&cb->timer);
@ -191,7 +191,7 @@ void blk_stat_enable_accounting(struct request_queue *q)
{
spin_lock(&q->stats->lock);
q->stats->enable_accounting = true;
set_bit(QUEUE_FLAG_STATS, &q->queue_flags);
blk_queue_flag_set(QUEUE_FLAG_STATS, q);
spin_unlock(&q->stats->lock);
}

29
block/blk-sysfs.c
View file

@ -276,12 +276,10 @@ queue_store_##name(struct request_queue *q, const char *page, size_t count) \
if (neg) \
val = !val; \
\
spin_lock_irq(q->queue_lock); \
if (val) \
queue_flag_set(QUEUE_FLAG_##flag, q); \
blk_queue_flag_set(QUEUE_FLAG_##flag, q); \
else \
queue_flag_clear(QUEUE_FLAG_##flag, q); \
spin_unlock_irq(q->queue_lock); \
blk_queue_flag_clear(QUEUE_FLAG_##flag, q); \
return ret; \
}
@ -414,12 +412,10 @@ static ssize_t queue_poll_store(struct request_queue *q, const char *page,
if (ret < 0)
return ret;
spin_lock_irq(q->queue_lock);
if (poll_on)
queue_flag_set(QUEUE_FLAG_POLL, q);
blk_queue_flag_set(QUEUE_FLAG_POLL, q);
else
queue_flag_clear(QUEUE_FLAG_POLL, q);
spin_unlock_irq(q->queue_lock);
blk_queue_flag_clear(QUEUE_FLAG_POLL, q);
return ret;
}
@ -487,12 +483,10 @@ static ssize_t queue_wc_store(struct request_queue *q, const char *page,
if (set == -1)
return -EINVAL;
spin_lock_irq(q->queue_lock);
if (set)
queue_flag_set(QUEUE_FLAG_WC, q);
blk_queue_flag_set(QUEUE_FLAG_WC, q);
else
queue_flag_clear(QUEUE_FLAG_WC, q);
spin_unlock_irq(q->queue_lock);
blk_queue_flag_clear(QUEUE_FLAG_WC, q);
return count;
}
@ -798,13 +792,6 @@ static void __blk_release_queue(struct work_struct *work)
if (test_bit(QUEUE_FLAG_POLL_STATS, &q->queue_flags))
blk_stat_remove_callback(q, q->poll_cb);
blk_stat_free_callback(q->poll_cb);
bdi_put(q->backing_dev_info);
blkcg_exit_queue(q);
if (q->elevator) {
ioc_clear_queue(q);
elevator_exit(q, q->elevator);
}
blk_free_queue_stats(q->stats);
@ -953,9 +940,7 @@ void blk_unregister_queue(struct gendisk *disk)
*/
mutex_lock(&q->sysfs_lock);
spin_lock_irq(q->queue_lock);
queue_flag_clear(QUEUE_FLAG_REGISTERED, q);
spin_unlock_irq(q->queue_lock);
blk_queue_flag_clear(QUEUE_FLAG_REGISTERED, q);
/*
* Remove the sysfs attributes before unregistering the queue data

8
block/blk-timeout.c
View file

@ -57,12 +57,10 @@ ssize_t part_timeout_store(struct device *dev, struct device_attribute *attr,
char *p = (char *) buf;
val = simple_strtoul(p, &p, 10);
spin_lock_irq(q->queue_lock);
if (val)
queue_flag_set(QUEUE_FLAG_FAIL_IO, q);
blk_queue_flag_set(QUEUE_FLAG_FAIL_IO, q);
else
queue_flag_clear(QUEUE_FLAG_FAIL_IO, q);
spin_unlock_irq(q->queue_lock);
blk_queue_flag_clear(QUEUE_FLAG_FAIL_IO, q);
}
return count;
@ -165,7 +163,7 @@ void blk_abort_request(struct request *req)
* No need for fancy synchronizations.
*/
blk_rq_set_deadline(req, jiffies);
mod_timer(&req->q->timeout, 0);
kblockd_schedule_work(&req->q->timeout_work);
} else {
if (blk_mark_rq_complete(req))
return;

4
block/blk-zoned.c
View file

@ -296,7 +296,7 @@ int blkdev_reset_zones(struct block_device *bdev,
}
EXPORT_SYMBOL_GPL(blkdev_reset_zones);
/**
/*
* BLKREPORTZONE ioctl processing.
* Called from blkdev_ioctl.
*/
@ -355,7 +355,7 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
return ret;
}
/**
/*
* BLKRESETZONE ioctl processing.
* Called from blkdev_ioctl.
*/

69
block/blk.h
View file

@ -41,6 +41,75 @@ extern struct kmem_cache *request_cachep;
extern struct kobj_type blk_queue_ktype;
extern struct ida blk_queue_ida;
/*
* @q->queue_lock is set while a queue is being initialized. Since we know
* that no other threads access the queue object before @q->queue_lock has
* been set, it is safe to manipulate queue flags without holding the
* queue_lock if @q->queue_lock == NULL. See also blk_alloc_queue_node() and
* blk_init_allocated_queue().
*/
static inline void queue_lockdep_assert_held(struct request_queue *q)
{
if (q->queue_lock)
lockdep_assert_held(q->queue_lock);
}
static inline void queue_flag_set_unlocked(unsigned int flag,
struct request_queue *q)
{
if (test_bit(QUEUE_FLAG_INIT_DONE, &q->queue_flags) &&
kref_read(&q->kobj.kref))
lockdep_assert_held(q->queue_lock);
__set_bit(flag, &q->queue_flags);
}
static inline void queue_flag_clear_unlocked(unsigned int flag,
struct request_queue *q)
{
if (test_bit(QUEUE_FLAG_INIT_DONE, &q->queue_flags) &&
kref_read(&q->kobj.kref))
lockdep_assert_held(q->queue_lock);
__clear_bit(flag, &q->queue_flags);
}
static inline int queue_flag_test_and_clear(unsigned int flag,
struct request_queue *q)
{
queue_lockdep_assert_held(q);
if (test_bit(flag, &q->queue_flags)) {
__clear_bit(flag, &q->queue_flags);
return 1;
}
return 0;
}
static inline int queue_flag_test_and_set(unsigned int flag,
struct request_queue *q)
{
queue_lockdep_assert_held(q);
if (!test_bit(flag, &q->queue_flags)) {
__set_bit(flag, &q->queue_flags);
return 0;
}
return 1;
}
static inline void queue_flag_set(unsigned int flag, struct request_queue *q)
{
queue_lockdep_assert_held(q);
__set_bit(flag, &q->queue_flags);
}
static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
{
queue_lockdep_assert_held(q);
__clear_bit(flag, &q->queue_flags);
}
static inline struct blk_flush_queue *blk_get_flush_queue(
struct request_queue *q, struct blk_mq_ctx *ctx)
{

165
block/bsg-lib.c
View file

@ -27,6 +27,94 @@
#include <linux/bsg-lib.h>
#include <linux/export.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/sg.h>
#define uptr64(val) ((void __user *)(uintptr_t)(val))
static int bsg_transport_check_proto(struct sg_io_v4 *hdr)
{
if (hdr->protocol != BSG_PROTOCOL_SCSI ||
hdr->subprotocol != BSG_SUB_PROTOCOL_SCSI_TRANSPORT)
return -EINVAL;
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
return 0;
}
static int bsg_transport_fill_hdr(struct request *rq, struct sg_io_v4 *hdr,
fmode_t mode)
{
struct bsg_job *job = blk_mq_rq_to_pdu(rq);
job->request_len = hdr->request_len;
job->request = memdup_user(uptr64(hdr->request), hdr->request_len);
if (IS_ERR(job->request))
return PTR_ERR(job->request);
return 0;
}
static int bsg_transport_complete_rq(struct request *rq, struct sg_io_v4 *hdr)
{
struct bsg_job *job = blk_mq_rq_to_pdu(rq);
int ret = 0;
/*
* The assignments below don't make much sense, but are kept for
* bug by bug backwards compatibility:
*/
hdr->device_status = job->result & 0xff;
hdr->transport_status = host_byte(job->result);
hdr->driver_status = driver_byte(job->result);
hdr->info = 0;
if (hdr->device_status || hdr->transport_status || hdr->driver_status)
hdr->info |= SG_INFO_CHECK;
hdr->response_len = 0;
if (job->result < 0) {
/* we're only returning the result field in the reply */
job->reply_len = sizeof(u32);
ret = job->result;
}
if (job->reply_len && hdr->response) {
int len = min(hdr->max_response_len, job->reply_len);
if (copy_to_user(uptr64(hdr->response), job->reply, len))
ret = -EFAULT;
else
hdr->response_len = len;
}
/* we assume all request payload was transferred, residual == 0 */
hdr->dout_resid = 0;
if (rq->next_rq) {
unsigned int rsp_len = job->reply_payload.payload_len;
if (WARN_ON(job->reply_payload_rcv_len > rsp_len))
hdr->din_resid = 0;
else
hdr->din_resid = rsp_len - job->reply_payload_rcv_len;
} else {
hdr->din_resid = 0;
}
return ret;
}
static void bsg_transport_free_rq(struct request *rq)
{
struct bsg_job *job = blk_mq_rq_to_pdu(rq);
kfree(job->request);
}
static const struct bsg_ops bsg_transport_ops = {
.check_proto = bsg_transport_check_proto,
.fill_hdr = bsg_transport_fill_hdr,
.complete_rq = bsg_transport_complete_rq,
.free_rq = bsg_transport_free_rq,
};
/**
* bsg_teardown_job - routine to teardown a bsg job
@ -35,7 +123,7 @@
static void bsg_teardown_job(struct kref *kref)
{
struct bsg_job *job = container_of(kref, struct bsg_job, kref);
struct request *rq = job->req;
struct request *rq = blk_mq_rq_from_pdu(job);
put_device(job->dev); /* release reference for the request */
@ -68,28 +156,9 @@ EXPORT_SYMBOL_GPL(bsg_job_get);
void bsg_job_done(struct bsg_job *job, int result,
unsigned int reply_payload_rcv_len)
{
struct request *req = job->req;
struct request *rsp = req->next_rq;
struct scsi_request *rq = scsi_req(req);
int err;
err = scsi_req(job->req)->result = result;
if (err < 0)
/* we're only returning the result field in the reply */
rq->sense_len = sizeof(u32);
else
rq->sense_len = job->reply_len;
/* we assume all request payload was transferred, residual == 0 */
rq->resid_len = 0;
if (rsp) {
WARN_ON(reply_payload_rcv_len > scsi_req(rsp)->resid_len);
/* set reply (bidi) residual */
scsi_req(rsp)->resid_len -=
min(reply_payload_rcv_len, scsi_req(rsp)->resid_len);
}
blk_complete_request(req);
job->result = result;
job->reply_payload_rcv_len = reply_payload_rcv_len;
blk_complete_request(blk_mq_rq_from_pdu(job));
}
EXPORT_SYMBOL_GPL(bsg_job_done);
@ -114,7 +183,6 @@ static int bsg_map_buffer(struct bsg_buffer *buf, struct request *req)
if (!buf->sg_list)
return -ENOMEM;
sg_init_table(buf->sg_list, req->nr_phys_segments);
scsi_req(req)->resid_len = blk_rq_bytes(req);
buf->sg_cnt = blk_rq_map_sg(req->q, req, buf->sg_list);
buf->payload_len = blk_rq_bytes(req);
return 0;
@ -125,15 +193,13 @@ static int bsg_map_buffer(struct bsg_buffer *buf, struct request *req)
* @dev: device that is being sent the bsg request
* @req: BSG request that needs a job structure
*/
static int bsg_prepare_job(struct device *dev, struct request *req)
static bool bsg_prepare_job(struct device *dev, struct request *req)
{
struct request *rsp = req->next_rq;
struct scsi_request *rq = scsi_req(req);
struct bsg_job *job = blk_mq_rq_to_pdu(req);
int ret;
job->request = rq->cmd;
job->request_len = rq->cmd_len;
job->timeout = req->timeout;
if (req->bio) {
ret = bsg_map_buffer(&job->request_payload, req);
@ -149,12 +215,13 @@ static int bsg_prepare_job(struct device *dev, struct request *req)
/* take a reference for the request */
get_device(job->dev);
kref_init(&job->kref);
return 0;
return true;
failjob_rls_rqst_payload:
kfree(job->request_payload.sg_list);
failjob_rls_job:
return -ENOMEM;
job->result = -ENOMEM;
return false;
}
/**
@ -183,9 +250,7 @@ static void bsg_request_fn(struct request_queue *q)
break;
spin_unlock_irq(q->queue_lock);
ret = bsg_prepare_job(dev, req);
if (ret) {
scsi_req(req)->result = ret;
if (!bsg_prepare_job(dev, req)) {
blk_end_request_all(req, BLK_STS_OK);
spin_lock_irq(q->queue_lock);
continue;
@ -202,47 +267,34 @@ static void bsg_request_fn(struct request_queue *q)
spin_lock_irq(q->queue_lock);
}
/* called right after the request is allocated for the request_queue */
static int bsg_init_rq(struct request_queue *q, struct request *req, gfp_t gfp)
{
struct bsg_job *job = blk_mq_rq_to_pdu(req);
struct scsi_request *sreq = &job->sreq;
/* called right after the request is allocated for the request_queue */
sreq->sense = kzalloc(SCSI_SENSE_BUFFERSIZE, gfp);
if (!sreq->sense)
job->reply = kzalloc(SCSI_SENSE_BUFFERSIZE, gfp);
if (!job->reply)
return -ENOMEM;
return 0;
}
/* called right before the request is given to the request_queue user */
static void bsg_initialize_rq(struct request *req)
{
struct bsg_job *job = blk_mq_rq_to_pdu(req);
struct scsi_request *sreq = &job->sreq;
void *sense = sreq->sense;
/* called right before the request is given to the request_queue user */
void *reply = job->reply;
memset(job, 0, sizeof(*job));
scsi_req_init(sreq);
sreq->sense = sense;
sreq->sense_len = SCSI_SENSE_BUFFERSIZE;
job->req = req;
job->reply = sense;
job->reply_len = sreq->sense_len;
job->reply = reply;
job->reply_len = SCSI_SENSE_BUFFERSIZE;
job->dd_data = job + 1;
}
static void bsg_exit_rq(struct request_queue *q, struct request *req)
{
struct bsg_job *job = blk_mq_rq_to_pdu(req);
struct scsi_request *sreq = &job->sreq;
kfree(sreq->sense);
kfree(job->reply);
}
/**
@ -275,12 +327,11 @@ struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
q->queuedata = dev;
q->bsg_job_fn = job_fn;
queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q);
queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, q);
blk_queue_flag_set(QUEUE_FLAG_BIDI, q);
blk_queue_softirq_done(q, bsg_softirq_done);
blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT);
ret = bsg_register_queue(q, dev, name, release);
ret = bsg_register_queue(q, dev, name, &bsg_transport_ops, release);
if (ret) {
printk(KERN_ERR "%s: bsg interface failed to "
"initialize - register queue\n", dev->kobj.name);

298
block/bsg.c
View file

@ -130,32 +130,110 @@ static inline struct hlist_head *bsg_dev_idx_hash(int index)
return &bsg_device_list[index & (BSG_LIST_ARRAY_SIZE - 1)];
}
static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
struct sg_io_v4 *hdr, struct bsg_device *bd,
fmode_t mode)
{
struct scsi_request *req = scsi_req(rq);
#define uptr64(val) ((void __user *)(uintptr_t)(val))
if (hdr->request_len > BLK_MAX_CDB) {
req->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
if (!req->cmd)
static int bsg_scsi_check_proto(struct sg_io_v4 *hdr)
{
if (hdr->protocol != BSG_PROTOCOL_SCSI ||
hdr->subprotocol != BSG_SUB_PROTOCOL_SCSI_CMD)
return -EINVAL;
return 0;
}
static int bsg_scsi_fill_hdr(struct request *rq, struct sg_io_v4 *hdr,
fmode_t mode)
{
struct scsi_request *sreq = scsi_req(rq);
sreq->cmd_len = hdr->request_len;
if (sreq->cmd_len > BLK_MAX_CDB) {
sreq->cmd = kzalloc(sreq->cmd_len, GFP_KERNEL);
if (!sreq->cmd)
return -ENOMEM;
}
if (copy_from_user(req->cmd, (void __user *)(unsigned long)hdr->request,
hdr->request_len))
if (copy_from_user(sreq->cmd, uptr64(hdr->request), sreq->cmd_len))
return -EFAULT;
if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) {
if (blk_verify_command(req->cmd, mode))
return -EPERM;
} else if (!capable(CAP_SYS_RAWIO))
if (blk_verify_command(sreq->cmd, mode))
return -EPERM;
return 0;
}
static int bsg_scsi_complete_rq(struct request *rq, struct sg_io_v4 *hdr)
{
struct scsi_request *sreq = scsi_req(rq);
int ret = 0;
/*
* fill in request structure
* fill in all the output members
*/
req->cmd_len = hdr->request_len;
hdr->device_status = sreq->result & 0xff;
hdr->transport_status = host_byte(sreq->result);
hdr->driver_status = driver_byte(sreq->result);
hdr->info = 0;
if (hdr->device_status || hdr->transport_status || hdr->driver_status)
hdr->info |= SG_INFO_CHECK;
hdr->response_len = 0;
if (sreq->sense_len && hdr->response) {
int len = min_t(unsigned int, hdr->max_response_len,
sreq->sense_len);
if (copy_to_user(uptr64(hdr->response), sreq->sense, len))
ret = -EFAULT;
else
hdr->response_len = len;
}
if (rq->next_rq) {
hdr->dout_resid = sreq->resid_len;
hdr->din_resid = scsi_req(rq->next_rq)->resid_len;
} else if (rq_data_dir(rq) == READ) {
hdr->din_resid = sreq->resid_len;
} else {
hdr->dout_resid = sreq->resid_len;
}
return ret;
}
static void bsg_scsi_free_rq(struct request *rq)
{
scsi_req_free_cmd(scsi_req(rq));
}
static const struct bsg_ops bsg_scsi_ops = {
.check_proto = bsg_scsi_check_proto,
.fill_hdr = bsg_scsi_fill_hdr,
.complete_rq = bsg_scsi_complete_rq,
.free_rq = bsg_scsi_free_rq,
};
static struct request *
bsg_map_hdr(struct request_queue *q, struct sg_io_v4 *hdr, fmode_t mode)
{
struct request *rq, *next_rq = NULL;
int ret;
if (!q->bsg_dev.class_dev)
return ERR_PTR(-ENXIO);
if (hdr->guard != 'Q')
return ERR_PTR(-EINVAL);
ret = q->bsg_dev.ops->check_proto(hdr);
if (ret)
return ERR_PTR(ret);
rq = blk_get_request(q, hdr->dout_xfer_len ?
REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN,
GFP_KERNEL);
if (IS_ERR(rq))
return rq;
ret = q->bsg_dev.ops->fill_hdr(rq, hdr, mode);
if (ret)
goto out;
rq->timeout = msecs_to_jiffies(hdr->timeout);
if (!rq->timeout)
@ -165,79 +243,7 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
if (rq->timeout < BLK_MIN_SG_TIMEOUT)
rq->timeout = BLK_MIN_SG_TIMEOUT;
return 0;
}
/*
* Check if sg_io_v4 from user is allowed and valid
*/
static int
bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *op)
{
int ret = 0;
if (hdr->guard != 'Q')
return -EINVAL;
switch (hdr->protocol) {
case BSG_PROTOCOL_SCSI:
switch (hdr->subprotocol) {
case BSG_SUB_PROTOCOL_SCSI_CMD:
case BSG_SUB_PROTOCOL_SCSI_TRANSPORT:
break;
default:
ret = -EINVAL;
}
break;
default:
ret = -EINVAL;
}
*op = hdr->dout_xfer_len ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN;
return ret;
}
/*
* map sg_io_v4 to a request.
*/
static struct request *
bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t mode)
{
struct request_queue *q = bd->queue;
struct request *rq, *next_rq = NULL;
int ret;
unsigned int op, dxfer_len;
void __user *dxferp = NULL;
struct bsg_class_device *bcd = &q->bsg_dev;
/* if the LLD has been removed then the bsg_unregister_queue will
* eventually be called and the class_dev was freed, so we can no
* longer use this request_queue. Return no such address.
*/
if (!bcd->class_dev)
return ERR_PTR(-ENXIO);
bsg_dbg(bd, "map hdr %llx/%u %llx/%u\n",
(unsigned long long) hdr->dout_xferp,
hdr->dout_xfer_len, (unsigned long long) hdr->din_xferp,
hdr->din_xfer_len);
ret = bsg_validate_sgv4_hdr(hdr, &op);
if (ret)
return ERR_PTR(ret);
/*
* map scatter-gather elements separately and string them to request
*/
rq = blk_get_request(q, op, GFP_KERNEL);
if (IS_ERR(rq))
return rq;
ret = blk_fill_sgv4_hdr_rq(q, rq, hdr, bd, mode);
if (ret)
goto out;
if (op == REQ_OP_SCSI_OUT && hdr->din_xfer_len) {
if (hdr->dout_xfer_len && hdr->din_xfer_len) {
if (!test_bit(QUEUE_FLAG_BIDI, &q->queue_flags)) {
ret = -EOPNOTSUPP;
goto out;
@ -246,42 +252,39 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t mode)
next_rq = blk_get_request(q, REQ_OP_SCSI_IN, GFP_KERNEL);
if (IS_ERR(next_rq)) {
ret = PTR_ERR(next_rq);
next_rq = NULL;
goto out;
}
rq->next_rq = next_rq;
dxferp = (void __user *)(unsigned long)hdr->din_xferp;
ret = blk_rq_map_user(q, next_rq, NULL, dxferp,
rq->next_rq = next_rq;
ret = blk_rq_map_user(q, next_rq, NULL, uptr64(hdr->din_xferp),
hdr->din_xfer_len, GFP_KERNEL);
if (ret)
goto out;
goto out_free_nextrq;
}
if (hdr->dout_xfer_len) {
dxfer_len = hdr->dout_xfer_len;
dxferp = (void __user *)(unsigned long)hdr->dout_xferp;
ret = blk_rq_map_user(q, rq, NULL, uptr64(hdr->dout_xferp),
hdr->dout_xfer_len, GFP_KERNEL);
} else if (hdr->din_xfer_len) {
dxfer_len = hdr->din_xfer_len;
dxferp = (void __user *)(unsigned long)hdr->din_xferp;
} else
dxfer_len = 0;
if (dxfer_len) {
ret = blk_rq_map_user(q, rq, NULL, dxferp, dxfer_len,
GFP_KERNEL);
if (ret)
goto out;
ret = blk_rq_map_user(q, rq, NULL, uptr64(hdr->din_xferp),
hdr->din_xfer_len, GFP_KERNEL);
} else {
ret = blk_rq_map_user(q, rq, NULL, NULL, 0, GFP_KERNEL);
}
if (ret)
goto out_unmap_nextrq;
return rq;
out_unmap_nextrq:
if (rq->next_rq)
blk_rq_unmap_user(rq->next_rq->bio);
out_free_nextrq:
if (rq->next_rq)
blk_put_request(rq->next_rq);
out:
scsi_req_free_cmd(scsi_req(rq));
q->bsg_dev.ops->free_rq(rq);
blk_put_request(rq);
if (next_rq) {
blk_rq_unmap_user(next_rq->bio);
blk_put_request(next_rq);
}
return ERR_PTR(ret);
}
@ -383,56 +386,18 @@ static struct bsg_command *bsg_get_done_cmd(struct bsg_device *bd)
static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
struct bio *bio, struct bio *bidi_bio)
{
struct scsi_request *req = scsi_req(rq);
int ret = 0;
int ret;
pr_debug("rq %p bio %p 0x%x\n", rq, bio, req->result);
/*
* fill in all the output members
*/
hdr->device_status = req->result & 0xff;
hdr->transport_status = host_byte(req->result);
hdr->driver_status = driver_byte(req->result);
hdr->info = 0;
if (hdr->device_status || hdr->transport_status || hdr->driver_status)
hdr->info |= SG_INFO_CHECK;
hdr->response_len = 0;
if (req->sense_len && hdr->response) {
int len = min_t(unsigned int, hdr->max_response_len,
req->sense_len);
ret = copy_to_user((void __user *)(unsigned long)hdr->response,
req->sense, len);
if (!ret)
hdr->response_len = len;
else
ret = -EFAULT;
}
ret = rq->q->bsg_dev.ops->complete_rq(rq, hdr);
if (rq->next_rq) {
hdr->dout_resid = req->resid_len;
hdr->din_resid = scsi_req(rq->next_rq)->resid_len;
blk_rq_unmap_user(bidi_bio);
blk_put_request(rq->next_rq);
} else if (rq_data_dir(rq) == READ)
hdr->din_resid = req->resid_len;
else
hdr->dout_resid = req->resid_len;
/*
* If the request generated a negative error number, return it
* (providing we aren't already returning an error); if it's
* just a protocol response (i.e. non negative), that gets
* processed above.
*/
if (!ret && req->result < 0)
ret = req->result;
}
blk_rq_unmap_user(bio);
scsi_req_free_cmd(req);
rq->q->bsg_dev.ops->free_rq(rq);
blk_put_request(rq);
return ret;
}
@ -614,7 +579,7 @@ static int __bsg_write(struct bsg_device *bd, const char __user *buf,
/*
* get a request, fill in the blanks, and add to request queue
*/
rq = bsg_map_hdr(bd, &bc->hdr, mode);
rq = bsg_map_hdr(bd->queue, &bc->hdr, mode);
if (IS_ERR(rq)) {
ret = PTR_ERR(rq);
rq = NULL;
@ -742,11 +707,6 @@ static struct bsg_device *bsg_add_device(struct inode *inode,
struct bsg_device *bd;
unsigned char buf[32];
if (!blk_queue_scsi_passthrough(rq)) {
WARN_ONCE(true, "Attempt to register a non-SCSI queue\n");
return ERR_PTR(-EINVAL);
}
if (!blk_get_queue(rq))
return ERR_PTR(-ENXIO);
@ -907,7 +867,7 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (copy_from_user(&hdr, uarg, sizeof(hdr)))
return -EFAULT;
rq = bsg_map_hdr(bd, &hdr, file->f_mode);
rq = bsg_map_hdr(bd->queue, &hdr, file->f_mode);
if (IS_ERR(rq))
return PTR_ERR(rq);
@ -959,7 +919,8 @@ void bsg_unregister_queue(struct request_queue *q)
EXPORT_SYMBOL_GPL(bsg_unregister_queue);
int bsg_register_queue(struct request_queue *q, struct device *parent,
const char *name, void (*release)(struct device *))
const char *name, const struct bsg_ops *ops,
void (*release)(struct device *))
{
struct bsg_class_device *bcd;
dev_t dev;
@ -996,6 +957,7 @@ int bsg_register_queue(struct request_queue *q, struct device *parent,
bcd->queue = q;
bcd->parent = get_device(parent);
bcd->release = release;
bcd->ops = ops;
kref_init(&bcd->ref);
dev = MKDEV(bsg_major, bcd->minor);
class_dev = device_create(bsg_class, parent, dev, NULL, "%s", devname);
@ -1023,7 +985,17 @@ int bsg_register_queue(struct request_queue *q, struct device *parent,
mutex_unlock(&bsg_mutex);
return ret;
}
EXPORT_SYMBOL_GPL(bsg_register_queue);
int bsg_scsi_register_queue(struct request_queue *q, struct device *parent)
{
if (!blk_queue_scsi_passthrough(q)) {
WARN_ONCE(true, "Attempt to register a non-SCSI queue\n");
return -EINVAL;
}
return bsg_register_queue(q, parent, NULL, &bsg_scsi_ops, NULL);
}
EXPORT_SYMBOL_GPL(bsg_scsi_register_queue);
static struct cdev bsg_cdev;

37
block/sed-opal.c
View file

@ -554,15 +554,14 @@ static void add_token_u64(int *err, struct opal_dev *cmd, u64 number)
size_t len;
int msb;
u8 n;
if (!(number & ~TINY_ATOM_DATA_MASK)) {
add_token_u8(err, cmd, number);
return;
}
msb = fls(number);
len = DIV_ROUND_UP(msb, 4);
msb = fls64(number);
len = DIV_ROUND_UP(msb, 8);
if (cmd->pos >= IO_BUFFER_LENGTH - len - 1) {
pr_debug("Error adding u64: end of buffer.\n");
@ -570,10 +569,8 @@ static void add_token_u64(int *err, struct opal_dev *cmd, u64 number)
return;
}
add_short_atom_header(cmd, false, false, len);
while (len--) {
n = number >> (len * 8);
add_token_u8(err, cmd, n);
}
while (len--)
add_token_u8(err, cmd, number >> (len * 8));
}
static void add_token_bytestring(int *err, struct opal_dev *cmd,
@ -871,6 +868,9 @@ static int response_parse(const u8 *buf, size_t length,
static size_t response_get_string(const struct parsed_resp *resp, int n,
const char **store)
{
u8 skip;
const struct opal_resp_tok *token;
*store = NULL;
if (!resp) {
pr_debug("Response is NULL\n");
@ -883,13 +883,30 @@ static size_t response_get_string(const struct parsed_resp *resp, int n,
return 0;
}
if (resp->toks[n].type != OPAL_DTA_TOKENID_BYTESTRING) {
token = &resp->toks[n];
if (token->type != OPAL_DTA_TOKENID_BYTESTRING) {
pr_debug("Token is not a byte string!\n");
return 0;
}
*store = resp->toks[n].pos + 1;
return resp->toks[n].len - 1;
switch (token->width) {
case OPAL_WIDTH_TINY:
case OPAL_WIDTH_SHORT:
skip = 1;
break;
case OPAL_WIDTH_MEDIUM:
skip = 2;
break;
case OPAL_WIDTH_LONG:
skip = 4;
break;
default:
pr_debug("Token has invalid width!\n");
return 0;
}
*store = token->pos + skip;
return token->len - skip;
}
static u64 response_get_u64(const struct parsed_resp *resp, int n)

1
drivers/block/brd.c
View file

@ -24,7 +24,6 @@
#include <linux/uaccess.h>
#define SECTOR_SHIFT 9
#define PAGE_SECTORS_SHIFT (PAGE_SHIFT - SECTOR_SHIFT)
#define PAGE_SECTORS (1 << PAGE_SECTORS_SHIFT)

3
drivers/block/drbd/drbd_main.c
View file

@ -2816,7 +2816,7 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
drbd_init_set_defaults(device);
q = blk_alloc_queue(GFP_KERNEL);
q = blk_alloc_queue_node(GFP_KERNEL, NUMA_NO_NODE, &resource->req_lock);
if (!q)
goto out_no_q;
device->rq_queue = q;
@ -2848,7 +2848,6 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
/* Setting the max_hw_sectors to an odd value of 8kibyte here
This triggers a max_bio_size message upon first attach or connect */
blk_queue_max_hw_sectors(q, DRBD_MAX_BIO_SIZE_SAFE >> 8);
q->queue_lock = &resource->req_lock;
device->md_io.page = alloc_page(GFP_KERNEL);
if (!device->md_io.page)

4
drivers/block/drbd/drbd_nl.c
View file

@ -1212,10 +1212,10 @@ static void decide_on_discard_support(struct drbd_device *device,
* topology on all peers. */
blk_queue_discard_granularity(q, 512);
q->limits.max_discard_sectors = drbd_max_discard_sectors(connection);
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
q->limits.max_write_zeroes_sectors = drbd_max_discard_sectors(connection);
} else {
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, q);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
blk_queue_discard_granularity(q, 0);
q->limits.max_discard_sectors = 0;
q->limits.max_write_zeroes_sectors = 0;

77
drivers/block/loop.c
View file

@ -214,10 +214,10 @@ static void __loop_update_dio(struct loop_device *lo, bool dio)
blk_mq_freeze_queue(lo->lo_queue);
lo->use_dio = use_dio;
if (use_dio) {
queue_flag_clear_unlocked(QUEUE_FLAG_NOMERGES, lo->lo_queue);
blk_queue_flag_clear(QUEUE_FLAG_NOMERGES, lo->lo_queue);
lo->lo_flags |= LO_FLAGS_DIRECT_IO;
} else {
queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, lo->lo_queue);
blk_queue_flag_set(QUEUE_FLAG_NOMERGES, lo->lo_queue);
lo->lo_flags &= ~LO_FLAGS_DIRECT_IO;
}
blk_mq_unfreeze_queue(lo->lo_queue);
@ -817,7 +817,7 @@ static void loop_config_discard(struct loop_device *lo)
q->limits.discard_alignment = 0;
blk_queue_max_discard_sectors(q, 0);
blk_queue_max_write_zeroes_sectors(q, 0);
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, q);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
return;
}
@ -826,7 +826,7 @@ static void loop_config_discard(struct loop_device *lo)
blk_queue_max_discard_sectors(q, UINT_MAX >> 9);
blk_queue_max_write_zeroes_sectors(q, UINT_MAX >> 9);
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
}
static void loop_unprepare_queue(struct loop_device *lo)
@ -1167,21 +1167,17 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
static int
loop_get_status(struct loop_device *lo, struct loop_info64 *info)
{
struct file *file = lo->lo_backing_file;
struct file *file;
struct kstat stat;
int error;
int ret;
if (lo->lo_state != Lo_bound)
if (lo->lo_state != Lo_bound) {
mutex_unlock(&lo->lo_ctl_mutex);
return -ENXIO;
error = vfs_getattr(&file->f_path, &stat,
STATX_INO, AT_STATX_SYNC_AS_STAT);
if (error)
return error;
}
memset(info, 0, sizeof(*info));
info->lo_number = lo->lo_number;
info->lo_device = huge_encode_dev(stat.dev);
info->lo_inode = stat.ino;
info->lo_rdevice = huge_encode_dev(lo->lo_device ? stat.rdev : stat.dev);
info->lo_offset = lo->lo_offset;
info->lo_sizelimit = lo->lo_sizelimit;
info->lo_flags = lo->lo_flags;
@ -1194,7 +1190,19 @@ loop_get_status(struct loop_device *lo, struct loop_info64 *info)
memcpy(info->lo_encrypt_key, lo->lo_encrypt_key,
lo->lo_encrypt_key_size);
}
return 0;
/* Drop lo_ctl_mutex while we call into the filesystem. */
file = get_file(lo->lo_backing_file);
mutex_unlock(&lo->lo_ctl_mutex);
ret = vfs_getattr(&file->f_path, &stat, STATX_INO,
AT_STATX_SYNC_AS_STAT);
if (!ret) {
info->lo_device = huge_encode_dev(stat.dev);
info->lo_inode = stat.ino;
info->lo_rdevice = huge_encode_dev(stat.rdev);
}
fput(file);
return ret;
}
static void
@ -1352,7 +1360,10 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
struct loop_device *lo = bdev->bd_disk->private_data;
int err;
mutex_lock_nested(&lo->lo_ctl_mutex, 1);
err = mutex_lock_killable_nested(&lo->lo_ctl_mutex, 1);
if (err)
goto out_unlocked;
switch (cmd) {
case LOOP_SET_FD:
err = loop_set_fd(lo, mode, bdev, arg);
@ -1374,7 +1385,8 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
break;
case LOOP_GET_STATUS:
err = loop_get_status_old(lo, (struct loop_info __user *) arg);
break;
/* loop_get_status() unlocks lo_ctl_mutex */
goto out_unlocked;
case LOOP_SET_STATUS64:
err = -EPERM;
if ((mode & FMODE_WRITE) || capable(CAP_SYS_ADMIN))
@ -1383,7 +1395,8 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
break;
case LOOP_GET_STATUS64:
err = loop_get_status64(lo, (struct loop_info64 __user *) arg);
break;
/* loop_get_status() unlocks lo_ctl_mutex */
goto out_unlocked;
case LOOP_SET_CAPACITY:
err = -EPERM;
if ((mode & FMODE_WRITE) || capable(CAP_SYS_ADMIN))
@ -1535,16 +1548,20 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode,
switch(cmd) {
case LOOP_SET_STATUS:
mutex_lock(&lo->lo_ctl_mutex);
err = loop_set_status_compat(
lo, (const struct compat_loop_info __user *) arg);
mutex_unlock(&lo->lo_ctl_mutex);
err = mutex_lock_killable(&lo->lo_ctl_mutex);
if (!err) {
err = loop_set_status_compat(lo,
(const struct compat_loop_info __user *)arg);
mutex_unlock(&lo->lo_ctl_mutex);
}
break;
case LOOP_GET_STATUS:
mutex_lock(&lo->lo_ctl_mutex);
err = loop_get_status_compat(
lo, (struct compat_loop_info __user *) arg);
mutex_unlock(&lo->lo_ctl_mutex);
err = mutex_lock_killable(&lo->lo_ctl_mutex);
if (!err) {
err = loop_get_status_compat(lo,
(struct compat_loop_info __user *)arg);
/* loop_get_status() unlocks lo_ctl_mutex */
}
break;
case LOOP_SET_CAPACITY:
case LOOP_CLR_FD:
@ -1808,7 +1825,7 @@ static int loop_add(struct loop_device **l, int i)
* page. For directio mode, merge does help to dispatch bigger request
* to underlayer disk. We will enable merge once directio is enabled.
*/
queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, lo->lo_queue);
blk_queue_flag_set(QUEUE_FLAG_NOMERGES, lo->lo_queue);
err = -ENOMEM;
disk = lo->lo_disk = alloc_disk(1 << part_shift);
@ -1864,8 +1881,8 @@ static int loop_add(struct loop_device **l, int i)
static void loop_remove(struct loop_device *lo)
{
blk_cleanup_queue(lo->lo_queue);
del_gendisk(lo->lo_disk);
blk_cleanup_queue(lo->lo_queue);
blk_mq_free_tag_set(&lo->tag_set);
put_disk(lo->lo_disk);
kfree(lo);
@ -1949,7 +1966,9 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd,
ret = loop_lookup(&lo, parm);
if (ret < 0)
break;
mutex_lock(&lo->lo_ctl_mutex);
ret = mutex_lock_killable(&lo->lo_ctl_mutex);
if (ret)
break;
if (lo->lo_state != Lo_unbound) {
ret = -EBUSY;
mutex_unlock(&lo->lo_ctl_mutex);

8
drivers/block/mtip32xx/mtip32xx.c
View file

@ -159,7 +159,7 @@ static bool mtip_check_surprise_removal(struct pci_dev *pdev)
if (vendor_id == 0xFFFF) {
dd->sr = true;
if (dd->queue)
set_bit(QUEUE_FLAG_DEAD, &dd->queue->queue_flags);
blk_queue_flag_set(QUEUE_FLAG_DEAD, dd->queue);
else
dev_warn(&dd->pdev->dev,
"%s: dd->queue is NULL\n", __func__);
@ -3855,8 +3855,8 @@ static int mtip_block_initialize(struct driver_data *dd)
goto start_service_thread;
/* Set device limits. */
set_bit(QUEUE_FLAG_NONROT, &dd->queue->queue_flags);
clear_bit(QUEUE_FLAG_ADD_RANDOM, &dd->queue->queue_flags);
blk_queue_flag_set(QUEUE_FLAG_NONROT, dd->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, dd->queue);
blk_queue_max_segments(dd->queue, MTIP_MAX_SG);
blk_queue_physical_block_size(dd->queue, 4096);
blk_queue_max_hw_sectors(dd->queue, 0xffff);
@ -3866,7 +3866,7 @@ static int mtip_block_initialize(struct driver_data *dd)
/* Signal trim support */
if (dd->trim_supp == true) {
set_bit(QUEUE_FLAG_DISCARD, &dd->queue->queue_flags);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, dd->queue);
dd->queue->limits.discard_granularity = 4096;
blk_queue_max_discard_sectors(dd->queue,
MTIP_MAX_TRIM_ENTRY_LEN * MTIP_MAX_TRIM_ENTRIES);

8
drivers/block/nbd.c
View file

@ -964,7 +964,7 @@ static void nbd_parse_flags(struct nbd_device *nbd)
else
set_disk_ro(nbd->disk, false);
if (config->flags & NBD_FLAG_SEND_TRIM)
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, nbd->disk->queue);
if (config->flags & NBD_FLAG_SEND_FLUSH) {
if (config->flags & NBD_FLAG_SEND_FUA)
blk_queue_write_cache(nbd->disk->queue, true, true);
@ -1040,7 +1040,7 @@ static void nbd_config_put(struct nbd_device *nbd)
nbd->config = NULL;
nbd->tag_set.timeout = 0;
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, nbd->disk->queue);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, nbd->disk->queue);
mutex_unlock(&nbd->config_lock);
nbd_put(nbd);
@ -1488,8 +1488,8 @@ static int nbd_dev_add(int index)
/*
* Tell the block layer that we are not a rotational device
*/
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, disk->queue);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, disk->queue);
blk_queue_flag_set(QUEUE_FLAG_NONROT, disk->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, disk->queue);
disk->queue->limits.discard_granularity = 512;
blk_queue_max_discard_sectors(disk->queue, UINT_MAX);
blk_queue_max_segment_size(disk->queue, UINT_MAX);

126
drivers/block/null_blk.c
View file

@ -16,10 +16,8 @@
#include <linux/badblocks.h>
#include <linux/fault-inject.h>
#define SECTOR_SHIFT 9
#define PAGE_SECTORS_SHIFT (PAGE_SHIFT - SECTOR_SHIFT)
#define PAGE_SECTORS (1 << PAGE_SECTORS_SHIFT)
#define SECTOR_SIZE (1 << SECTOR_SHIFT)
#define SECTOR_MASK (PAGE_SECTORS - 1)
#define FREE_BATCH 16
@ -29,6 +27,7 @@
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
static DECLARE_FAULT_ATTR(null_timeout_attr);
static DECLARE_FAULT_ATTR(null_requeue_attr);
#endif
static inline u64 mb_per_tick(int mbps)
@ -53,6 +52,7 @@ struct nullb_queue {
wait_queue_head_t wait;
unsigned int queue_depth;
struct nullb_device *dev;
unsigned int requeue_selection;
struct nullb_cmd *cmds;
};
@ -72,6 +72,7 @@ enum nullb_device_flags {
NULLB_DEV_FL_CACHE = 3,
};
#define MAP_SZ ((PAGE_SIZE >> SECTOR_SHIFT) + 2)
/*
* nullb_page is a page in memory for nullb devices.
*
@ -86,10 +87,10 @@ enum nullb_device_flags {
*/
struct nullb_page {
struct page *page;
unsigned long bitmap;
DECLARE_BITMAP(bitmap, MAP_SZ);
};
#define NULLB_PAGE_LOCK (sizeof(unsigned long) * 8 - 1)
#define NULLB_PAGE_FREE (sizeof(unsigned long) * 8 - 2)
#define NULLB_PAGE_LOCK (MAP_SZ - 1)
#define NULLB_PAGE_FREE (MAP_SZ - 2)
struct nullb_device {
struct nullb *nullb;
@ -170,6 +171,9 @@ MODULE_PARM_DESC(home_node, "Home node for the device");
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
static char g_timeout_str[80];
module_param_string(timeout, g_timeout_str, sizeof(g_timeout_str), S_IRUGO);
static char g_requeue_str[80];
module_param_string(requeue, g_requeue_str, sizeof(g_requeue_str), S_IRUGO);
#endif
static int g_queue_mode = NULL_Q_MQ;
@ -728,7 +732,7 @@ static struct nullb_page *null_alloc_page(gfp_t gfp_flags)
if (!t_page->page)
goto out_freepage;
t_page->bitmap = 0;
memset(t_page->bitmap, 0, sizeof(t_page->bitmap));
return t_page;
out_freepage:
kfree(t_page);
@ -738,13 +742,20 @@ static struct nullb_page *null_alloc_page(gfp_t gfp_flags)
static void null_free_page(struct nullb_page *t_page)
{
__set_bit(NULLB_PAGE_FREE, &t_page->bitmap);
if (test_bit(NULLB_PAGE_LOCK, &t_page->bitmap))
__set_bit(NULLB_PAGE_FREE, t_page->bitmap);
if (test_bit(NULLB_PAGE_LOCK, t_page->bitmap))
return;
__free_page(t_page->page);
kfree(t_page);
}
static bool null_page_empty(struct nullb_page *page)
{
int size = MAP_SZ - 2;
return find_first_bit(page->bitmap, size) == size;
}
static void null_free_sector(struct nullb *nullb, sector_t sector,
bool is_cache)
{
@ -759,9 +770,9 @@ static void null_free_sector(struct nullb *nullb, sector_t sector,
t_page = radix_tree_lookup(root, idx);
if (t_page) {
__clear_bit(sector_bit, &t_page->bitmap);
__clear_bit(sector_bit, t_page->bitmap);
if (!t_page->bitmap) {
if (null_page_empty(t_page)) {
ret = radix_tree_delete_item(root, idx, t_page);
WARN_ON(ret != t_page);
null_free_page(ret);
@ -832,7 +843,7 @@ static struct nullb_page *__null_lookup_page(struct nullb *nullb,
t_page = radix_tree_lookup(root, idx);
WARN_ON(t_page && t_page->page->index != idx);
if (t_page && (for_write || test_bit(sector_bit, &t_page->bitmap)))
if (t_page && (for_write || test_bit(sector_bit, t_page->bitmap)))
return t_page;
return NULL;
@ -895,10 +906,10 @@ static int null_flush_cache_page(struct nullb *nullb, struct nullb_page *c_page)
t_page = null_insert_page(nullb, idx << PAGE_SECTORS_SHIFT, true);
__clear_bit(NULLB_PAGE_LOCK, &c_page->bitmap);
if (test_bit(NULLB_PAGE_FREE, &c_page->bitmap)) {
__clear_bit(NULLB_PAGE_LOCK, c_page->bitmap);
if (test_bit(NULLB_PAGE_FREE, c_page->bitmap)) {
null_free_page(c_page);
if (t_page && t_page->bitmap == 0) {
if (t_page && null_page_empty(t_page)) {
ret = radix_tree_delete_item(&nullb->dev->data,
idx, t_page);
null_free_page(t_page);
@ -914,11 +925,11 @@ static int null_flush_cache_page(struct nullb *nullb, struct nullb_page *c_page)
for (i = 0; i < PAGE_SECTORS;
i += (nullb->dev->blocksize >> SECTOR_SHIFT)) {
if (test_bit(i, &c_page->bitmap)) {
if (test_bit(i, c_page->bitmap)) {
offset = (i << SECTOR_SHIFT);
memcpy(dst + offset, src + offset,
nullb->dev->blocksize);
__set_bit(i, &t_page->bitmap);
__set_bit(i, t_page->bitmap);
}
}
@ -955,10 +966,10 @@ static int null_make_cache_space(struct nullb *nullb, unsigned long n)
* We found the page which is being flushed to disk by other
* threads
*/
if (test_bit(NULLB_PAGE_LOCK, &c_pages[i]->bitmap))
if (test_bit(NULLB_PAGE_LOCK, c_pages[i]->bitmap))
c_pages[i] = NULL;
else
__set_bit(NULLB_PAGE_LOCK, &c_pages[i]->bitmap);
__set_bit(NULLB_PAGE_LOCK, c_pages[i]->bitmap);
}
one_round = 0;
@ -1011,7 +1022,7 @@ static int copy_to_nullb(struct nullb *nullb, struct page *source,
kunmap_atomic(dst);
kunmap_atomic(src);
__set_bit(sector & SECTOR_MASK, &t_page->bitmap);
__set_bit(sector & SECTOR_MASK, t_page->bitmap);
if (is_fua)
null_free_sector(nullb, sector, true);
@ -1380,7 +1391,15 @@ static bool should_timeout_request(struct request *rq)
if (g_timeout_str[0])
return should_fail(&null_timeout_attr, 1);
#endif
return false;
}
static bool should_requeue_request(struct request *rq)
{
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
if (g_requeue_str[0])
return should_fail(&null_requeue_attr, 1);
#endif
return false;
}
@ -1391,11 +1410,17 @@ static void null_request_fn(struct request_queue *q)
while ((rq = blk_fetch_request(q)) != NULL) {
struct nullb_cmd *cmd = rq->special;
if (!should_timeout_request(rq)) {
spin_unlock_irq(q->queue_lock);
null_handle_cmd(cmd);
spin_lock_irq(q->queue_lock);
/* just ignore the request */
if (should_timeout_request(rq))
continue;
if (should_requeue_request(rq)) {
blk_requeue_request(q, rq);
continue;
}
spin_unlock_irq(q->queue_lock);
null_handle_cmd(cmd);
spin_lock_irq(q->queue_lock);
}
}
@ -1422,10 +1447,23 @@ static blk_status_t null_queue_rq(struct blk_mq_hw_ctx *hctx,
blk_mq_start_request(bd->rq);
if (!should_timeout_request(bd->rq))
return null_handle_cmd(cmd);
if (should_requeue_request(bd->rq)) {
/*
* Alternate between hitting the core BUSY path, and the
* driver driven requeue path
*/
nq->requeue_selection++;
if (nq->requeue_selection & 1)
return BLK_STS_RESOURCE;
else {
blk_mq_requeue_request(bd->rq, true);
return BLK_STS_OK;
}
}
if (should_timeout_request(bd->rq))
return BLK_STS_OK;
return BLK_STS_OK;
return null_handle_cmd(cmd);
}
static const struct blk_mq_ops null_mq_ops = {
@ -1485,7 +1523,7 @@ static void null_config_discard(struct nullb *nullb)
nullb->q->limits.discard_granularity = nullb->dev->blocksize;
nullb->q->limits.discard_alignment = nullb->dev->blocksize;
blk_queue_max_discard_sectors(nullb->q, UINT_MAX >> 9);
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, nullb->q);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, nullb->q);
}
static int null_open(struct block_device *bdev, fmode_t mode)
@ -1659,16 +1697,27 @@ static void null_validate_conf(struct nullb_device *dev)
dev->mbps = 0;
}
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
static bool __null_setup_fault(struct fault_attr *attr, char *str)
{
if (!str[0])
return true;
if (!setup_fault_attr(attr, str))
return false;
attr->verbose = 0;
return true;
}
#endif
static bool null_setup_fault(void)
{
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
if (!g_timeout_str[0])
return true;
if (!setup_fault_attr(&null_timeout_attr, g_timeout_str))
if (!__null_setup_fault(&null_timeout_attr, g_timeout_str))
return false;
if (!__null_setup_fault(&null_requeue_attr, g_requeue_str))
return false;
null_timeout_attr.verbose = 0;
#endif
return true;
}
@ -1717,7 +1766,8 @@ static int null_add_dev(struct nullb_device *dev)
}
null_init_queues(nullb);
} else if (dev->queue_mode == NULL_Q_BIO) {
nullb->q = blk_alloc_queue_node(GFP_KERNEL, dev->home_node);
nullb->q = blk_alloc_queue_node(GFP_KERNEL, dev->home_node,
NULL);
if (!nullb->q) {
rv = -ENOMEM;
goto out_cleanup_queues;
@ -1758,8 +1808,8 @@ static int null_add_dev(struct nullb_device *dev)
}
nullb->q->queuedata = nullb;
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, nullb->q);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, nullb->q);
blk_queue_flag_set(QUEUE_FLAG_NONROT, nullb->q);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, nullb->q);
mutex_lock(&lock);
nullb->index = ida_simple_get(&nullb_indexes, 0, 0, GFP_KERNEL);
@ -1802,10 +1852,6 @@ static int __init null_init(void)
struct nullb *nullb;
struct nullb_device *dev;
/* check for nullb_page.bitmap */
if (sizeof(unsigned long) * 8 - 2 < (PAGE_SIZE >> SECTOR_SHIFT))
return -EINVAL;
if (g_bs > PAGE_SIZE) {
pr_warn("null_blk: invalid block size\n");
pr_warn("null_blk: defaults block size to %lu\n", PAGE_SIZE);

2
drivers/block/paride/pcd.c
View file

@ -230,6 +230,8 @@ static int pcd_block_open(struct block_device *bdev, fmode_t mode)
struct pcd_unit *cd = bdev->bd_disk->private_data;
int ret;
check_disk_change(bdev);
mutex_lock(&pcd_mutex);
ret = cdrom_open(&cd->info, bdev, mode);
mutex_unlock(&pcd_mutex);

13
drivers/block/rbd.c
View file

@ -50,15 +50,6 @@
#define RBD_DEBUG /* Activate rbd_assert() calls */
/*
* The basic unit of block I/O is a sector. It is interpreted in a
* number of contexts in Linux (blk, bio, genhd), but the default is
* universally 512 bytes. These symbols are just slightly more
* meaningful than the bare numbers they represent.
*/
#define SECTOR_SHIFT 9
#define SECTOR_SIZE (1ULL << SECTOR_SHIFT)
/*
* Increment the given counter and return its updated value.
* If the counter is already 0 it will not be incremented.
@ -4370,7 +4361,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
goto out_tag_set;
}
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
/* QUEUE_FLAG_ADD_RANDOM is off by default for blk-mq */
/* set io sizes to object size */
@ -4383,7 +4374,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
blk_queue_io_opt(q, segment_size);
/* enable the discard support */
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
q->limits.discard_granularity = segment_size;
blk_queue_max_discard_sectors(q, segment_size / SECTOR_SIZE);
blk_queue_max_write_zeroes_sectors(q, segment_size / SECTOR_SIZE);

6
drivers/block/rsxx/dev.c
View file

@ -287,10 +287,10 @@ int rsxx_setup_dev(struct rsxx_cardinfo *card)
blk_queue_max_hw_sectors(card->queue, blkdev_max_hw_sectors);
blk_queue_physical_block_size(card->queue, RSXX_HW_BLK_SIZE);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, card->queue);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, card->queue);
blk_queue_flag_set(QUEUE_FLAG_NONROT, card->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, card->queue);
if (rsxx_discard_supported(card)) {
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, card->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, card->queue);
blk_queue_max_discard_sectors(card->queue,
RSXX_HW_BLK_SIZE >> 9);
card->queue->limits.discard_granularity = RSXX_HW_BLK_SIZE;

4
drivers/block/skd_main.c
View file

@ -2858,8 +2858,8 @@ static int skd_cons_disk(struct skd_device *skdev)
/* set optimal I/O size to 8KB */
blk_queue_io_opt(q, 8192);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, q);
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q);
blk_queue_rq_timeout(q, 8 * HZ);

7
drivers/block/umem.c
View file

@ -888,13 +888,14 @@ static int mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
card->Active = -1; /* no page is active */
card->bio = NULL;
card->biotail = &card->bio;
spin_lock_init(&card->lock);
card->queue = blk_alloc_queue(GFP_KERNEL);
card->queue = blk_alloc_queue_node(GFP_KERNEL, NUMA_NO_NODE,
&card->lock);
if (!card->queue)
goto failed_alloc;
blk_queue_make_request(card->queue, mm_make_request);
card->queue->queue_lock = &card->lock;
card->queue->queuedata = card;
tasklet_init(&card->tasklet, process_page, (unsigned long)card);
@ -968,8 +969,6 @@ static int mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
dev_printk(KERN_INFO, &card->dev->dev,
"Window size %d bytes, IRQ %d\n", data, dev->irq);
spin_lock_init(&card->lock);
pci_set_drvdata(dev, card);
if (pci_write_cmd != 0x0F) /* If not Memory Write & Invalidate */

10
drivers/block/xen-blkfront.c
View file

@ -932,15 +932,15 @@ static void blkif_set_queue_limits(struct blkfront_info *info)
unsigned int segments = info->max_indirect_segments ? :
BLKIF_MAX_SEGMENTS_PER_REQUEST;
queue_flag_set_unlocked(QUEUE_FLAG_VIRT, rq);
blk_queue_flag_set(QUEUE_FLAG_VIRT, rq);
if (info->feature_discard) {
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, rq);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, rq);
blk_queue_max_discard_sectors(rq, get_capacity(gd));
rq->limits.discard_granularity = info->discard_granularity;
rq->limits.discard_alignment = info->discard_alignment;
if (info->feature_secdiscard)
queue_flag_set_unlocked(QUEUE_FLAG_SECERASE, rq);
blk_queue_flag_set(QUEUE_FLAG_SECERASE, rq);
}
/* Hard sector size and max sectors impersonate the equiv. hardware. */
@ -1611,8 +1611,8 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
blkif_req(req)->error = BLK_STS_NOTSUPP;
info->feature_discard = 0;
info->feature_secdiscard = 0;
queue_flag_clear(QUEUE_FLAG_DISCARD, rq);
queue_flag_clear(QUEUE_FLAG_SECERASE, rq);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, rq);
blk_queue_flag_clear(QUEUE_FLAG_SECERASE, rq);
}
break;
case BLKIF_OP_FLUSH_DISKCACHE:

8
drivers/block/zram/zram_drv.c
View file

@ -1530,8 +1530,8 @@ static int zram_add(void)
/* Actual capacity set using syfs (/sys/block/zram<id>/disksize */
set_capacity(zram->disk, 0);
/* zram devices sort of resembles non-rotational disks */
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, zram->disk->queue);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, zram->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_NONROT, zram->disk->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, zram->disk->queue);
/*
* To ensure that we always get PAGE_SIZE aligned
@ -1544,7 +1544,7 @@ static int zram_add(void)
blk_queue_io_opt(zram->disk->queue, PAGE_SIZE);
zram->disk->queue->limits.discard_granularity = PAGE_SIZE;
blk_queue_max_discard_sectors(zram->disk->queue, UINT_MAX);
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, zram->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, zram->disk->queue);
/*
* zram_bio_discard() will clear all logical blocks if logical block
@ -1620,8 +1620,8 @@ static int zram_remove(struct zram *zram)
pr_info("Removed device: %s\n", zram->disk->disk_name);
blk_cleanup_queue(zram->disk->queue);
del_gendisk(zram->disk);
blk_cleanup_queue(zram->disk->queue);
put_disk(zram->disk);
kfree(zram);
return 0;

1
drivers/block/zram/zram_drv.h
View file

@ -37,7 +37,6 @@ static const size_t max_zpage_size = PAGE_SIZE / 4 * 3;
/*-- End of configurable params */
#define SECTOR_SHIFT 9
#define SECTORS_PER_PAGE_SHIFT (PAGE_SHIFT - SECTOR_SHIFT)
#define SECTORS_PER_PAGE (1 << SECTORS_PER_PAGE_SHIFT)
#define ZRAM_LOGICAL_BLOCK_SHIFT 12

3
drivers/cdrom/cdrom.c
View file

@ -1152,9 +1152,6 @@ int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev,
cd_dbg(CD_OPEN, "entering cdrom_open\n");
/* open is event synchronization point, check events first */
check_disk_change(bdev);
/* if this was a O_NONBLOCK open and we should honor the flags,
* do a quick open without drive/disc integrity checks. */
cdi->use_count++;

3
drivers/cdrom/gdrom.c
View file

@ -497,6 +497,9 @@ static const struct cdrom_device_ops gdrom_ops = {
static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
{
int ret;
check_disk_change(bdev);
mutex_lock(&gdrom_mutex);
ret = cdrom_open(gd.cd_info, bdev, mode);
mutex_unlock(&gdrom_mutex);

10
drivers/ide/ide-cd.c
View file

@ -712,7 +712,7 @@ static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
struct request_queue *q = drive->queue;
int write = rq_data_dir(rq) == WRITE;
unsigned short sectors_per_frame =
queue_logical_block_size(q) >> SECTOR_BITS;
queue_logical_block_size(q) >> SECTOR_SHIFT;
ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
"secs_per_frame: %u",
@ -919,7 +919,7 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
* end up being bogus.
*/
blocklen = be32_to_cpu(capbuf.blocklen);
blocklen = (blocklen >> SECTOR_BITS) << SECTOR_BITS;
blocklen = (blocklen >> SECTOR_SHIFT) << SECTOR_SHIFT;
switch (blocklen) {
case 512:
case 1024:
@ -935,7 +935,7 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
}
*capacity = 1 + be32_to_cpu(capbuf.lba);
*sectors_per_frame = blocklen >> SECTOR_BITS;
*sectors_per_frame = blocklen >> SECTOR_SHIFT;
ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
*capacity, *sectors_per_frame);
@ -1012,7 +1012,7 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense)
drive->probed_capacity = toc->capacity * sectors_per_frame;
blk_queue_logical_block_size(drive->queue,
sectors_per_frame << SECTOR_BITS);
sectors_per_frame << SECTOR_SHIFT);
/* first read just the header, so we know how long the TOC is */
stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
@ -1613,6 +1613,8 @@ static int idecd_open(struct block_device *bdev, fmode_t mode)
struct cdrom_info *info;
int rc = -ENXIO;
check_disk_change(bdev);
mutex_lock(&ide_cd_mutex);
info = ide_cd_get(bdev->bd_disk);
if (!info)

6
drivers/ide/ide-cd.h
View file

@ -21,11 +21,7 @@
/************************************************************************/
#define SECTOR_BITS 9
#ifndef SECTOR_SIZE
#define SECTOR_SIZE (1 << SECTOR_BITS)
#endif
#define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_BITS)
#define SECTORS_PER_FRAME (CD_FRAMESIZE >> SECTOR_SHIFT)
#define SECTOR_BUFFER_SIZE (CD_FRAMESIZE * 32)
/* Capabilities Page size including 8 bytes of Mode Page Header */

4
drivers/ide/ide-disk.c
View file

@ -687,8 +687,8 @@ static void ide_disk_setup(ide_drive_t *drive)
queue_max_sectors(q) / 2);
if (ata_id_is_ssd(id)) {
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, q);
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q);
}
/* calculate drive capacity, and select LBA if possible */

4
drivers/ide/ide-probe.c
View file

@ -766,14 +766,14 @@ static int ide_init_queue(ide_drive_t *drive)
* limits and LBA48 we could raise it but as yet
* do not.
*/
q = blk_alloc_queue_node(GFP_KERNEL, hwif_to_node(hwif));
q = blk_alloc_queue_node(GFP_KERNEL, hwif_to_node(hwif), NULL);
if (!q)
return 1;
q->request_fn = do_ide_request;
q->initialize_rq_fn = ide_initialize_rq;
q->cmd_size = sizeof(struct ide_request);
queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, q);
blk_queue_flag_set(QUEUE_FLAG_SCSI_PASSTHROUGH, q);
if (blk_init_allocated_queue(q) < 0) {
blk_cleanup_queue(q);
return 1;

240
drivers/lightnvm/core.c
View file

@ -36,13 +36,13 @@ static DECLARE_RWSEM(nvm_lock);
/* Map between virtual and physical channel and lun */
struct nvm_ch_map {
int ch_off;
int nr_luns;
int num_lun;
int *lun_offs;
};
struct nvm_dev_map {
struct nvm_ch_map *chnls;
int nr_chnls;
int num_ch;
};
static struct nvm_target *nvm_find_target(struct nvm_dev *dev, const char *name)
@ -114,15 +114,15 @@ static void nvm_remove_tgt_dev(struct nvm_tgt_dev *tgt_dev, int clear)
struct nvm_dev_map *dev_map = tgt_dev->map;
int i, j;
for (i = 0; i < dev_map->nr_chnls; i++) {
for (i = 0; i < dev_map->num_ch; i++) {
struct nvm_ch_map *ch_map = &dev_map->chnls[i];
int *lun_offs = ch_map->lun_offs;
int ch = i + ch_map->ch_off;
if (clear) {
for (j = 0; j < ch_map->nr_luns; j++) {
for (j = 0; j < ch_map->num_lun; j++) {
int lun = j + lun_offs[j];
int lunid = (ch * dev->geo.nr_luns) + lun;
int lunid = (ch * dev->geo.num_lun) + lun;
WARN_ON(!test_and_clear_bit(lunid,
dev->lun_map));
@ -147,47 +147,46 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
struct nvm_dev_map *dev_rmap = dev->rmap;
struct nvm_dev_map *dev_map;
struct ppa_addr *luns;
int nr_luns = lun_end - lun_begin + 1;
int luns_left = nr_luns;
int nr_chnls = nr_luns / dev->geo.nr_luns;
int nr_chnls_mod = nr_luns % dev->geo.nr_luns;
int bch = lun_begin / dev->geo.nr_luns;
int blun = lun_begin % dev->geo.nr_luns;
int num_lun = lun_end - lun_begin + 1;
int luns_left = num_lun;
int num_ch = num_lun / dev->geo.num_lun;
int num_ch_mod = num_lun % dev->geo.num_lun;
int bch = lun_begin / dev->geo.num_lun;
int blun = lun_begin % dev->geo.num_lun;
int lunid = 0;
int lun_balanced = 1;
int prev_nr_luns;
int sec_per_lun, prev_num_lun;
int i, j;
nr_chnls = (nr_chnls_mod == 0) ? nr_chnls : nr_chnls + 1;
num_ch = (num_ch_mod == 0) ? num_ch : num_ch + 1;
dev_map = kmalloc(sizeof(struct nvm_dev_map), GFP_KERNEL);
if (!dev_map)
goto err_dev;
dev_map->chnls = kcalloc(nr_chnls, sizeof(struct nvm_ch_map),
GFP_KERNEL);
dev_map->chnls = kcalloc(num_ch, sizeof(struct nvm_ch_map), GFP_KERNEL);
if (!dev_map->chnls)
goto err_chnls;
luns = kcalloc(nr_luns, sizeof(struct ppa_addr), GFP_KERNEL);
luns = kcalloc(num_lun, sizeof(struct ppa_addr), GFP_KERNEL);
if (!luns)
goto err_luns;
prev_nr_luns = (luns_left > dev->geo.nr_luns) ?
dev->geo.nr_luns : luns_left;
for (i = 0; i < nr_chnls; i++) {
prev_num_lun = (luns_left > dev->geo.num_lun) ?
dev->geo.num_lun : luns_left;
for (i = 0; i < num_ch; i++) {
struct nvm_ch_map *ch_rmap = &dev_rmap->chnls[i + bch];
int *lun_roffs = ch_rmap->lun_offs;
struct nvm_ch_map *ch_map = &dev_map->chnls[i];
int *lun_offs;
int luns_in_chnl = (luns_left > dev->geo.nr_luns) ?
dev->geo.nr_luns : luns_left;
int luns_in_chnl = (luns_left > dev->geo.num_lun) ?
dev->geo.num_lun : luns_left;
if (lun_balanced && prev_nr_luns != luns_in_chnl)
if (lun_balanced && prev_num_lun != luns_in_chnl)
lun_balanced = 0;
ch_map->ch_off = ch_rmap->ch_off = bch;
ch_map->nr_luns = luns_in_chnl;
ch_map->num_lun = luns_in_chnl;
lun_offs = kcalloc(luns_in_chnl, sizeof(int), GFP_KERNEL);
if (!lun_offs)
@ -195,8 +194,8 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
for (j = 0; j < luns_in_chnl; j++) {
luns[lunid].ppa = 0;
luns[lunid].g.ch = i;
luns[lunid++].g.lun = j;
luns[lunid].a.ch = i;
luns[lunid++].a.lun = j;
lun_offs[j] = blun;
lun_roffs[j + blun] = blun;
@ -209,24 +208,29 @@ static struct nvm_tgt_dev *nvm_create_tgt_dev(struct nvm_dev *dev,
luns_left -= luns_in_chnl;
}
dev_map->nr_chnls = nr_chnls;
dev_map->num_ch = num_ch;
tgt_dev = kmalloc(sizeof(struct nvm_tgt_dev), GFP_KERNEL);
if (!tgt_dev)
goto err_ch;
/* Inherit device geometry from parent */
memcpy(&tgt_dev->geo, &dev->geo, sizeof(struct nvm_geo));
/* Target device only owns a portion of the physical device */
tgt_dev->geo.nr_chnls = nr_chnls;
tgt_dev->geo.all_luns = nr_luns;
tgt_dev->geo.nr_luns = (lun_balanced) ? prev_nr_luns : -1;
tgt_dev->geo.num_ch = num_ch;
tgt_dev->geo.num_lun = (lun_balanced) ? prev_num_lun : -1;
tgt_dev->geo.all_luns = num_lun;
tgt_dev->geo.all_chunks = num_lun * dev->geo.num_chk;
tgt_dev->geo.op = op;
tgt_dev->total_secs = nr_luns * tgt_dev->geo.sec_per_lun;
sec_per_lun = dev->geo.clba * dev->geo.num_chk;
tgt_dev->geo.total_secs = num_lun * sec_per_lun;
tgt_dev->q = dev->q;
tgt_dev->map = dev_map;
tgt_dev->luns = luns;
memcpy(&tgt_dev->identity, &dev->identity, sizeof(struct nvm_id));
tgt_dev->parent = dev;
return tgt_dev;
@ -296,24 +300,20 @@ static int __nvm_config_simple(struct nvm_dev *dev,
static int __nvm_config_extended(struct nvm_dev *dev,
struct nvm_ioctl_create_extended *e)
{
struct nvm_geo *geo = &dev->geo;
if (e->lun_begin == 0xFFFF && e->lun_end == 0xFFFF) {
e->lun_begin = 0;
e->lun_end = dev->geo.all_luns - 1;
}
/* op not set falls into target's default */
if (e->op == 0xFFFF)
if (e->op == 0xFFFF) {
e->op = NVM_TARGET_DEFAULT_OP;
if (e->op < NVM_TARGET_MIN_OP ||
e->op > NVM_TARGET_MAX_OP) {
} else if (e->op < NVM_TARGET_MIN_OP || e->op > NVM_TARGET_MAX_OP) {
pr_err("nvm: invalid over provisioning value\n");
return -EINVAL;
}
return nvm_config_check_luns(geo, e->lun_begin, e->lun_end);
return nvm_config_check_luns(&dev->geo, e->lun_begin, e->lun_end);
}
static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
@ -384,7 +384,7 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
goto err_dev;
}
tqueue = blk_alloc_queue_node(GFP_KERNEL, dev->q->node);
tqueue = blk_alloc_queue_node(GFP_KERNEL, dev->q->node, NULL);
if (!tqueue) {
ret = -ENOMEM;
goto err_disk;
@ -407,7 +407,8 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
tdisk->private_data = targetdata;
tqueue->queuedata = targetdata;
blk_queue_max_hw_sectors(tqueue, 8 * dev->ops->max_phys_sect);
blk_queue_max_hw_sectors(tqueue,
(dev->geo.csecs >> 9) * NVM_MAX_VLBA);
set_capacity(tdisk, tt->capacity(targetdata));
add_disk(tdisk);
@ -503,20 +504,20 @@ static int nvm_register_map(struct nvm_dev *dev)
if (!rmap)
goto err_rmap;
rmap->chnls = kcalloc(dev->geo.nr_chnls, sizeof(struct nvm_ch_map),
rmap->chnls = kcalloc(dev->geo.num_ch, sizeof(struct nvm_ch_map),
GFP_KERNEL);
if (!rmap->chnls)
goto err_chnls;
for (i = 0; i < dev->geo.nr_chnls; i++) {
for (i = 0; i < dev->geo.num_ch; i++) {
struct nvm_ch_map *ch_rmap;
int *lun_roffs;
int luns_in_chnl = dev->geo.nr_luns;
int luns_in_chnl = dev->geo.num_lun;
ch_rmap = &rmap->chnls[i];
ch_rmap->ch_off = -1;
ch_rmap->nr_luns = luns_in_chnl;
ch_rmap->num_lun = luns_in_chnl;
lun_roffs = kcalloc(luns_in_chnl, sizeof(int), GFP_KERNEL);
if (!lun_roffs)
@ -545,7 +546,7 @@ static void nvm_unregister_map(struct nvm_dev *dev)
struct nvm_dev_map *rmap = dev->rmap;
int i;
for (i = 0; i < dev->geo.nr_chnls; i++)
for (i = 0; i < dev->geo.num_ch; i++)
kfree(rmap->chnls[i].lun_offs);
kfree(rmap->chnls);
@ -555,22 +556,22 @@ static void nvm_unregister_map(struct nvm_dev *dev)
static void nvm_map_to_dev(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
{
struct nvm_dev_map *dev_map = tgt_dev->map;
struct nvm_ch_map *ch_map = &dev_map->chnls[p->g.ch];
int lun_off = ch_map->lun_offs[p->g.lun];
struct nvm_ch_map *ch_map = &dev_map->chnls[p->a.ch];
int lun_off = ch_map->lun_offs[p->a.lun];
p->g.ch += ch_map->ch_off;
p->g.lun += lun_off;
p->a.ch += ch_map->ch_off;
p->a.lun += lun_off;
}
static void nvm_map_to_tgt(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *p)
{
struct nvm_dev *dev = tgt_dev->parent;
struct nvm_dev_map *dev_rmap = dev->rmap;
struct nvm_ch_map *ch_rmap = &dev_rmap->chnls[p->g.ch];
int lun_roff = ch_rmap->lun_offs[p->g.lun];
struct nvm_ch_map *ch_rmap = &dev_rmap->chnls[p->a.ch];
int lun_roff = ch_rmap->lun_offs[p->a.lun];
p->g.ch -= ch_rmap->ch_off;
p->g.lun -= lun_roff;
p->a.ch -= ch_rmap->ch_off;
p->a.lun -= lun_roff;
}
static void nvm_ppa_tgt_to_dev(struct nvm_tgt_dev *tgt_dev,
@ -580,7 +581,7 @@ static void nvm_ppa_tgt_to_dev(struct nvm_tgt_dev *tgt_dev,
for (i = 0; i < nr_ppas; i++) {
nvm_map_to_dev(tgt_dev, &ppa_list[i]);
ppa_list[i] = generic_to_dev_addr(tgt_dev, ppa_list[i]);
ppa_list[i] = generic_to_dev_addr(tgt_dev->parent, ppa_list[i]);
}
}
@ -590,7 +591,7 @@ static void nvm_ppa_dev_to_tgt(struct nvm_tgt_dev *tgt_dev,
int i;
for (i = 0; i < nr_ppas; i++) {
ppa_list[i] = dev_to_generic_addr(tgt_dev, ppa_list[i]);
ppa_list[i] = dev_to_generic_addr(tgt_dev->parent, ppa_list[i]);
nvm_map_to_tgt(tgt_dev, &ppa_list[i]);
}
}
@ -674,7 +675,7 @@ static int nvm_set_rqd_ppalist(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,
int i, plane_cnt, pl_idx;
struct ppa_addr ppa;
if (geo->plane_mode == NVM_PLANE_SINGLE && nr_ppas == 1) {
if (geo->pln_mode == NVM_PLANE_SINGLE && nr_ppas == 1) {
rqd->nr_ppas = nr_ppas;
rqd->ppa_addr = ppas[0];
@ -688,7 +689,7 @@ static int nvm_set_rqd_ppalist(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,
return -ENOMEM;
}
plane_cnt = geo->plane_mode;
plane_cnt = geo->pln_mode;
rqd->nr_ppas *= plane_cnt;
for (i = 0; i < nr_ppas; i++) {
@ -711,6 +712,17 @@ static void nvm_free_rqd_ppalist(struct nvm_tgt_dev *tgt_dev,
nvm_dev_dma_free(tgt_dev->parent, rqd->ppa_list, rqd->dma_ppa_list);
}
int nvm_get_chunk_meta(struct nvm_tgt_dev *tgt_dev, struct nvm_chk_meta *meta,
struct ppa_addr ppa, int nchks)
{
struct nvm_dev *dev = tgt_dev->parent;
nvm_ppa_tgt_to_dev(tgt_dev, &ppa, 1);
return dev->ops->get_chk_meta(tgt_dev->parent, meta,
(sector_t)ppa.ppa, nchks);
}
EXPORT_SYMBOL(nvm_get_chunk_meta);
int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
int nr_ppas, int type)
@ -719,7 +731,7 @@ int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
struct nvm_rq rqd;
int ret;
if (nr_ppas > dev->ops->max_phys_sect) {
if (nr_ppas > NVM_MAX_VLBA) {
pr_err("nvm: unable to update all blocks atomically\n");
return -EINVAL;
}
@ -740,14 +752,6 @@ int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
}
EXPORT_SYMBOL(nvm_set_tgt_bb_tbl);
int nvm_max_phys_sects(struct nvm_tgt_dev *tgt_dev)
{
struct nvm_dev *dev = tgt_dev->parent;
return dev->ops->max_phys_sect;
}
EXPORT_SYMBOL(nvm_max_phys_sects);
int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
{
struct nvm_dev *dev = tgt_dev->parent;
@ -814,15 +818,15 @@ int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
struct nvm_geo *geo = &dev->geo;
int blk, offset, pl, blktype;
if (nr_blks != geo->nr_chks * geo->plane_mode)
if (nr_blks != geo->num_chk * geo->pln_mode)
return -EINVAL;
for (blk = 0; blk < geo->nr_chks; blk++) {
offset = blk * geo->plane_mode;
for (blk = 0; blk < geo->num_chk; blk++) {
offset = blk * geo->pln_mode;
blktype = blks[offset];
/* Bad blocks on any planes take precedence over other types */
for (pl = 0; pl < geo->plane_mode; pl++) {
for (pl = 0; pl < geo->pln_mode; pl++) {
if (blks[offset + pl] &
(NVM_BLK_T_BAD|NVM_BLK_T_GRWN_BAD)) {
blktype = blks[offset + pl];
@ -833,7 +837,7 @@ int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
blks[blk] = blktype;
}
return geo->nr_chks;
return geo->num_chk;
}
EXPORT_SYMBOL(nvm_bb_tbl_fold);
@ -850,44 +854,9 @@ EXPORT_SYMBOL(nvm_get_tgt_bb_tbl);
static int nvm_core_init(struct nvm_dev *dev)
{
struct nvm_id *id = &dev->identity;
struct nvm_id_group *grp = &id->grp;
struct nvm_geo *geo = &dev->geo;
int ret;
memcpy(&geo->ppaf, &id->ppaf, sizeof(struct nvm_addr_format));
if (grp->mtype != 0) {
pr_err("nvm: memory type not supported\n");
return -EINVAL;
}
/* Whole device values */
geo->nr_chnls = grp->num_ch;
geo->nr_luns = grp->num_lun;
/* Generic device geometry values */
geo->ws_min = grp->ws_min;
geo->ws_opt = grp->ws_opt;
geo->ws_seq = grp->ws_seq;
geo->ws_per_chk = grp->ws_per_chk;
geo->nr_chks = grp->num_chk;
geo->sec_size = grp->csecs;
geo->oob_size = grp->sos;
geo->mccap = grp->mccap;
geo->max_rq_size = dev->ops->max_phys_sect * geo->sec_size;
geo->sec_per_chk = grp->clba;
geo->sec_per_lun = geo->sec_per_chk * geo->nr_chks;
geo->all_luns = geo->nr_luns * geo->nr_chnls;
/* 1.2 spec device geometry values */
geo->plane_mode = 1 << geo->ws_seq;
geo->nr_planes = geo->ws_opt / geo->ws_min;
geo->sec_per_pg = geo->ws_min;
geo->sec_per_pl = geo->sec_per_pg * geo->nr_planes;
dev->total_secs = geo->all_luns * geo->sec_per_lun;
dev->lun_map = kcalloc(BITS_TO_LONGS(geo->all_luns),
sizeof(unsigned long), GFP_KERNEL);
if (!dev->lun_map)
@ -902,7 +871,6 @@ static int nvm_core_init(struct nvm_dev *dev)
if (ret)
goto err_fmtype;
blk_queue_logical_block_size(dev->q, geo->sec_size);
return 0;
err_fmtype:
kfree(dev->lun_map);
@ -927,18 +895,14 @@ static int nvm_init(struct nvm_dev *dev)
struct nvm_geo *geo = &dev->geo;
int ret = -EINVAL;
if (dev->ops->identity(dev, &dev->identity)) {
if (dev->ops->identity(dev)) {
pr_err("nvm: device could not be identified\n");
goto err;
}
pr_debug("nvm: ver:%x nvm_vendor:%x\n",
dev->identity.ver_id, dev->identity.vmnt);
if (dev->identity.ver_id != 1) {
pr_err("nvm: device not supported by kernel.");
goto err;
}
pr_debug("nvm: ver:%u.%u nvm_vendor:%x\n",
geo->major_ver_id, geo->minor_ver_id,
geo->vmnt);
ret = nvm_core_init(dev);
if (ret) {
@ -946,10 +910,10 @@ static int nvm_init(struct nvm_dev *dev)
goto err;
}
pr_info("nvm: registered %s [%u/%u/%u/%u/%u/%u]\n",
dev->name, geo->sec_per_pg, geo->nr_planes,
geo->ws_per_chk, geo->nr_chks,
geo->all_luns, geo->nr_chnls);
pr_info("nvm: registered %s [%u/%u/%u/%u/%u]\n",
dev->name, dev->geo.ws_min, dev->geo.ws_opt,
dev->geo.num_chk, dev->geo.all_luns,
dev->geo.num_ch);
return 0;
err:
pr_err("nvm: failed to initialize nvm\n");
@ -969,17 +933,10 @@ int nvm_register(struct nvm_dev *dev)
if (!dev->q || !dev->ops)
return -EINVAL;
if (dev->ops->max_phys_sect > 256) {
pr_info("nvm: max sectors supported is 256.\n");
return -EINVAL;
}
if (dev->ops->max_phys_sect > 1) {
dev->dma_pool = dev->ops->create_dma_pool(dev, "ppalist");
if (!dev->dma_pool) {
pr_err("nvm: could not create dma pool\n");
return -ENOMEM;
}
dev->dma_pool = dev->ops->create_dma_pool(dev, "ppalist");
if (!dev->dma_pool) {
pr_err("nvm: could not create dma pool\n");
return -ENOMEM;
}
ret = nvm_init(dev);
@ -1040,9 +997,6 @@ static long nvm_ioctl_info(struct file *file, void __user *arg)
struct nvm_tgt_type *tt;
int tgt_iter = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
info = memdup_user(arg, sizeof(struct nvm_ioctl_info));
if (IS_ERR(info))
return -EFAULT;
@ -1081,9 +1035,6 @@ static long nvm_ioctl_get_devices(struct file *file, void __user *arg)
struct nvm_dev *dev;
int i = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
devices = kzalloc(sizeof(struct nvm_ioctl_get_devices), GFP_KERNEL);
if (!devices)
return -ENOMEM;
@ -1124,9 +1075,6 @@ static long nvm_ioctl_dev_create(struct file *file, void __user *arg)
{
struct nvm_ioctl_create create;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&create, arg, sizeof(struct nvm_ioctl_create)))
return -EFAULT;
@ -1162,9 +1110,6 @@ static long nvm_ioctl_dev_remove(struct file *file, void __user *arg)
struct nvm_dev *dev;
int ret = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&remove, arg, sizeof(struct nvm_ioctl_remove)))
return -EFAULT;
@ -1189,9 +1134,6 @@ static long nvm_ioctl_dev_init(struct file *file, void __user *arg)
{
struct nvm_ioctl_dev_init init;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&init, arg, sizeof(struct nvm_ioctl_dev_init)))
return -EFAULT;
@ -1208,9 +1150,6 @@ static long nvm_ioctl_dev_factory(struct file *file, void __user *arg)
{
struct nvm_ioctl_dev_factory fact;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&fact, arg, sizeof(struct nvm_ioctl_dev_factory)))
return -EFAULT;
@ -1226,6 +1165,9 @@ static long nvm_ctl_ioctl(struct file *file, uint cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
switch (cmd) {
case NVM_INFO:
return nvm_ioctl_info(file, argp);

4
drivers/lightnvm/pblk-cache.c
View file

@ -63,6 +63,8 @@ int pblk_write_to_cache(struct pblk *pblk, struct bio *bio, unsigned long flags)
bio_advance(bio, PBLK_EXPOSED_PAGE_SIZE);
}
atomic64_add(nr_entries, &pblk->user_wa);
#ifdef CONFIG_NVM_DEBUG
atomic_long_add(nr_entries, &pblk->inflight_writes);
atomic_long_add(nr_entries, &pblk->req_writes);
@ -117,6 +119,8 @@ int pblk_write_gc_to_cache(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
WARN_ONCE(gc_rq->secs_to_gc != valid_entries,
"pblk: inconsistent GC write\n");
atomic64_add(valid_entries, &pblk->gc_wa);
#ifdef CONFIG_NVM_DEBUG
atomic_long_add(valid_entries, &pblk->inflight_writes);
atomic_long_add(valid_entries, &pblk->recov_gc_writes);

202
drivers/lightnvm/pblk-core.c
View file

@ -44,11 +44,12 @@ static void pblk_line_mark_bb(struct work_struct *work)
}
static void pblk_mark_bb(struct pblk *pblk, struct pblk_line *line,
struct ppa_addr *ppa)
struct ppa_addr ppa_addr)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
int pos = pblk_ppa_to_pos(geo, *ppa);
struct ppa_addr *ppa;
int pos = pblk_ppa_to_pos(geo, ppa_addr);
pr_debug("pblk: erase failed: line:%d, pos:%d\n", line->id, pos);
atomic_long_inc(&pblk->erase_failed);
@ -58,26 +59,38 @@ static void pblk_mark_bb(struct pblk *pblk, struct pblk_line *line,
pr_err("pblk: attempted to erase bb: line:%d, pos:%d\n",
line->id, pos);
/* Not necessary to mark bad blocks on 2.0 spec. */
if (geo->version == NVM_OCSSD_SPEC_20)
return;
ppa = kmalloc(sizeof(struct ppa_addr), GFP_ATOMIC);
if (!ppa)
return;
*ppa = ppa_addr;
pblk_gen_run_ws(pblk, NULL, ppa, pblk_line_mark_bb,
GFP_ATOMIC, pblk->bb_wq);
}
static void __pblk_end_io_erase(struct pblk *pblk, struct nvm_rq *rqd)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct nvm_chk_meta *chunk;
struct pblk_line *line;
int pos;
line = &pblk->lines[pblk_ppa_to_line(rqd->ppa_addr)];
pos = pblk_ppa_to_pos(geo, rqd->ppa_addr);
chunk = &line->chks[pos];
atomic_dec(&line->left_seblks);
if (rqd->error) {
struct ppa_addr *ppa;
ppa = kmalloc(sizeof(struct ppa_addr), GFP_ATOMIC);
if (!ppa)
return;
*ppa = rqd->ppa_addr;
pblk_mark_bb(pblk, line, ppa);
chunk->state = NVM_CHK_ST_OFFLINE;
pblk_mark_bb(pblk, line, rqd->ppa_addr);
} else {
chunk->state = NVM_CHK_ST_FREE;
}
atomic_dec(&pblk->inflight_io);
@ -92,6 +105,49 @@ static void pblk_end_io_erase(struct nvm_rq *rqd)
mempool_free(rqd, pblk->e_rq_pool);
}
/*
* Get information for all chunks from the device.
*
* The caller is responsible for freeing the returned structure
*/
struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct nvm_chk_meta *meta;
struct ppa_addr ppa;
unsigned long len;
int ret;
ppa.ppa = 0;
len = geo->all_chunks * sizeof(*meta);
meta = kzalloc(len, GFP_KERNEL);
if (!meta)
return ERR_PTR(-ENOMEM);
ret = nvm_get_chunk_meta(dev, meta, ppa, geo->all_chunks);
if (ret) {
kfree(meta);
return ERR_PTR(-EIO);
}
return meta;
}
struct nvm_chk_meta *pblk_chunk_get_off(struct pblk *pblk,
struct nvm_chk_meta *meta,
struct ppa_addr ppa)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
int ch_off = ppa.m.grp * geo->num_chk * geo->num_lun;
int lun_off = ppa.m.pu * geo->num_chk;
int chk_off = ppa.m.chk;
return meta + ch_off + lun_off + chk_off;
}
void __pblk_map_invalidate(struct pblk *pblk, struct pblk_line *line,
u64 paddr)
{
@ -613,7 +669,7 @@ static int pblk_line_submit_emeta_io(struct pblk *pblk, struct pblk_line *line,
memset(&rqd, 0, sizeof(struct nvm_rq));
rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
rq_len = rq_ppas * geo->sec_size;
rq_len = rq_ppas * geo->csecs;
bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len,
l_mg->emeta_alloc_type, GFP_KERNEL);
@ -722,7 +778,7 @@ u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line)
if (bit >= lm->blk_per_line)
return -1;
return bit * geo->sec_per_pl;
return bit * geo->ws_opt;
}
static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line,
@ -885,7 +941,7 @@ int pblk_line_erase(struct pblk *pblk, struct pblk_line *line)
}
ppa = pblk->luns[bit].bppa; /* set ch and lun */
ppa.g.blk = line->id;
ppa.a.blk = line->id;
atomic_dec(&line->left_eblks);
WARN_ON(test_and_set_bit(bit, line->erase_bitmap));
@ -975,7 +1031,8 @@ static int pblk_line_init_metadata(struct pblk *pblk, struct pblk_line *line,
memcpy(smeta_buf->header.uuid, pblk->instance_uuid, 16);
smeta_buf->header.id = cpu_to_le32(line->id);
smeta_buf->header.type = cpu_to_le16(line->type);
smeta_buf->header.version = SMETA_VERSION;
smeta_buf->header.version_major = SMETA_VERSION_MAJOR;
smeta_buf->header.version_minor = SMETA_VERSION_MINOR;
/* Start metadata */
smeta_buf->seq_nr = cpu_to_le64(line->seq_nr);
@ -998,6 +1055,12 @@ static int pblk_line_init_metadata(struct pblk *pblk, struct pblk_line *line,
/* End metadata */
memcpy(&emeta_buf->header, &smeta_buf->header,
sizeof(struct line_header));
emeta_buf->header.version_major = EMETA_VERSION_MAJOR;
emeta_buf->header.version_minor = EMETA_VERSION_MINOR;
emeta_buf->header.crc = cpu_to_le32(
pblk_calc_meta_header_crc(pblk, &emeta_buf->header));
emeta_buf->seq_nr = cpu_to_le64(line->seq_nr);
emeta_buf->nr_lbas = cpu_to_le64(line->sec_in_line);
emeta_buf->nr_valid_lbas = cpu_to_le64(0);
@ -1018,28 +1081,26 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
struct nvm_geo *geo = &dev->geo;
struct pblk_line_meta *lm = &pblk->lm;
struct pblk_line_mgmt *l_mg = &pblk->l_mg;
int nr_bb = 0;
u64 off;
int bit = -1;
int emeta_secs;
line->sec_in_line = lm->sec_per_line;
/* Capture bad block information on line mapping bitmaps */
while ((bit = find_next_bit(line->blk_bitmap, lm->blk_per_line,
bit + 1)) < lm->blk_per_line) {
off = bit * geo->sec_per_pl;
off = bit * geo->ws_opt;
bitmap_shift_left(l_mg->bb_aux, l_mg->bb_template, off,
lm->sec_per_line);
bitmap_or(line->map_bitmap, line->map_bitmap, l_mg->bb_aux,
lm->sec_per_line);
line->sec_in_line -= geo->sec_per_chk;
if (bit >= lm->emeta_bb)
nr_bb++;
line->sec_in_line -= geo->clba;
}
/* Mark smeta metadata sectors as bad sectors */
bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
off = bit * geo->sec_per_pl;
off = bit * geo->ws_opt;
bitmap_set(line->map_bitmap, off, lm->smeta_sec);
line->sec_in_line -= lm->smeta_sec;
line->smeta_ssec = off;
@ -1055,18 +1116,18 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
/* Mark emeta metadata sectors as bad sectors. We need to consider bad
* blocks to make sure that there are enough sectors to store emeta
*/
off = lm->sec_per_line - lm->emeta_sec[0];
bitmap_set(line->invalid_bitmap, off, lm->emeta_sec[0]);
while (nr_bb) {
off -= geo->sec_per_pl;
emeta_secs = lm->emeta_sec[0];
off = lm->sec_per_line;
while (emeta_secs) {
off -= geo->ws_opt;
if (!test_bit(off, line->invalid_bitmap)) {
bitmap_set(line->invalid_bitmap, off, geo->sec_per_pl);
nr_bb--;
bitmap_set(line->invalid_bitmap, off, geo->ws_opt);
emeta_secs -= geo->ws_opt;
}
}
line->sec_in_line -= lm->emeta_sec[0];
line->emeta_ssec = off;
line->sec_in_line -= lm->emeta_sec[0];
line->nr_valid_lbas = 0;
line->left_msecs = line->sec_in_line;
*line->vsc = cpu_to_le32(line->sec_in_line);
@ -1086,10 +1147,34 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
return 1;
}
static int pblk_prepare_new_line(struct pblk *pblk, struct pblk_line *line)
{
struct pblk_line_meta *lm = &pblk->lm;
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
int blk_to_erase = atomic_read(&line->blk_in_line);
int i;
for (i = 0; i < lm->blk_per_line; i++) {
struct pblk_lun *rlun = &pblk->luns[i];
int pos = pblk_ppa_to_pos(geo, rlun->bppa);
int state = line->chks[pos].state;
/* Free chunks should not be erased */
if (state & NVM_CHK_ST_FREE) {
set_bit(pblk_ppa_to_pos(geo, rlun->bppa),
line->erase_bitmap);
blk_to_erase--;
}
}
return blk_to_erase;
}
static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line)
{
struct pblk_line_meta *lm = &pblk->lm;
int blk_in_line = atomic_read(&line->blk_in_line);
int blk_to_erase;
line->map_bitmap = kzalloc(lm->sec_bitmap_len, GFP_ATOMIC);
if (!line->map_bitmap)
@ -1102,7 +1187,21 @@ static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line)
return -ENOMEM;
}
/* Bad blocks do not need to be erased */
bitmap_copy(line->erase_bitmap, line->blk_bitmap, lm->blk_per_line);
spin_lock(&line->lock);
/* If we have not written to this line, we need to mark up free chunks
* as already erased
*/
if (line->state == PBLK_LINESTATE_NEW) {
blk_to_erase = pblk_prepare_new_line(pblk, line);
line->state = PBLK_LINESTATE_FREE;
} else {
blk_to_erase = atomic_read(&line->blk_in_line);
}
if (line->state != PBLK_LINESTATE_FREE) {
kfree(line->map_bitmap);
kfree(line->invalid_bitmap);
@ -1114,15 +1213,12 @@ static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line)
line->state = PBLK_LINESTATE_OPEN;
atomic_set(&line->left_eblks, blk_in_line);
atomic_set(&line->left_seblks, blk_in_line);
atomic_set(&line->left_eblks, blk_to_erase);
atomic_set(&line->left_seblks, blk_to_erase);
line->meta_distance = lm->meta_distance;
spin_unlock(&line->lock);
/* Bad blocks do not need to be erased */
bitmap_copy(line->erase_bitmap, line->blk_bitmap, lm->blk_per_line);
kref_init(&line->ref);
return 0;
@ -1399,13 +1495,6 @@ struct pblk_line *pblk_line_replace_data(struct pblk *pblk)
l_mg->data_line = new;
spin_lock(&l_mg->free_lock);
if (pblk->state != PBLK_STATE_RUNNING) {
l_mg->data_line = NULL;
l_mg->data_next = NULL;
spin_unlock(&l_mg->free_lock);
goto out;
}
pblk_line_setup_metadata(new, l_mg, &pblk->lm);
spin_unlock(&l_mg->free_lock);
@ -1585,12 +1674,14 @@ static void pblk_line_should_sync_meta(struct pblk *pblk)
void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct pblk_line_meta *lm = &pblk->lm;
struct pblk_line_mgmt *l_mg = &pblk->l_mg;
struct list_head *move_list;
int i;
#ifdef CONFIG_NVM_DEBUG
struct pblk_line_meta *lm = &pblk->lm;
WARN(!bitmap_full(line->map_bitmap, lm->sec_per_line),
"pblk: corrupt closed line %d\n", line->id);
#endif
@ -1612,6 +1703,15 @@ void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
line->smeta = NULL;
line->emeta = NULL;
for (i = 0; i < lm->blk_per_line; i++) {
struct pblk_lun *rlun = &pblk->luns[i];
int pos = pblk_ppa_to_pos(geo, rlun->bppa);
int state = line->chks[pos].state;
if (!(state & NVM_CHK_ST_OFFLINE))
state = NVM_CHK_ST_CLOSED;
}
spin_unlock(&line->lock);
spin_unlock(&l_mg->gc_lock);
}
@ -1622,11 +1722,16 @@ void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)
struct pblk_line_meta *lm = &pblk->lm;
struct pblk_emeta *emeta = line->emeta;
struct line_emeta *emeta_buf = emeta->buf;
struct wa_counters *wa = emeta_to_wa(lm, emeta_buf);
/* No need for exact vsc value; avoid a big line lock and take aprox. */
memcpy(emeta_to_vsc(pblk, emeta_buf), l_mg->vsc_list, lm->vsc_list_len);
memcpy(emeta_to_bb(emeta_buf), line->blk_bitmap, lm->blk_bitmap_len);
wa->user = cpu_to_le64(atomic64_read(&pblk->user_wa));
wa->pad = cpu_to_le64(atomic64_read(&pblk->pad_wa));
wa->gc = cpu_to_le64(atomic64_read(&pblk->gc_wa));
emeta_buf->nr_valid_lbas = cpu_to_le64(line->nr_valid_lbas);
emeta_buf->crc = cpu_to_le32(pblk_calc_emeta_crc(pblk, emeta_buf));
@ -1680,8 +1785,8 @@ static void __pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list,
int i;
for (i = 1; i < nr_ppas; i++)
WARN_ON(ppa_list[0].g.lun != ppa_list[i].g.lun ||
ppa_list[0].g.ch != ppa_list[i].g.ch);
WARN_ON(ppa_list[0].a.lun != ppa_list[i].a.lun ||
ppa_list[0].a.ch != ppa_list[i].a.ch);
#endif
ret = down_timeout(&rlun->wr_sem, msecs_to_jiffies(30000));
@ -1725,8 +1830,8 @@ void pblk_up_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas)
int i;
for (i = 1; i < nr_ppas; i++)
WARN_ON(ppa_list[0].g.lun != ppa_list[i].g.lun ||
ppa_list[0].g.ch != ppa_list[i].g.ch);
WARN_ON(ppa_list[0].a.lun != ppa_list[i].a.lun ||
ppa_list[0].a.ch != ppa_list[i].a.ch);
#endif
rlun = &pblk->luns[pos];
@ -1739,10 +1844,10 @@ void pblk_up_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct pblk_lun *rlun;
int nr_luns = geo->all_luns;
int num_lun = geo->all_luns;
int bit = -1;
while ((bit = find_next_bit(lun_bitmap, nr_luns, bit + 1)) < nr_luns) {
while ((bit = find_next_bit(lun_bitmap, num_lun, bit + 1)) < num_lun) {
rlun = &pblk->luns[bit];
up(&rlun->wr_sem);
}
@ -1829,6 +1934,7 @@ void pblk_update_map_dev(struct pblk *pblk, sector_t lba,
#endif
/* Invalidate and discard padded entries */
if (lba == ADDR_EMPTY) {
atomic64_inc(&pblk->pad_wa);
#ifdef CONFIG_NVM_DEBUG
atomic_long_inc(&pblk->padded_wb);
#endif

12
drivers/lightnvm/pblk-gc.c
View file

@ -88,7 +88,7 @@ static void pblk_gc_line_ws(struct work_struct *work)
up(&gc->gc_sem);
gc_rq->data = vmalloc(gc_rq->nr_secs * geo->sec_size);
gc_rq->data = vmalloc(gc_rq->nr_secs * geo->csecs);
if (!gc_rq->data) {
pr_err("pblk: could not GC line:%d (%d/%d)\n",
line->id, *line->vsc, gc_rq->nr_secs);
@ -147,10 +147,8 @@ static void pblk_gc_line_prepare_ws(struct work_struct *work)
int ret;
invalid_bitmap = kmalloc(lm->sec_bitmap_len, GFP_KERNEL);
if (!invalid_bitmap) {
pr_err("pblk: could not allocate GC invalid bitmap\n");
if (!invalid_bitmap)
goto fail_free_ws;
}
emeta_buf = pblk_malloc(lm->emeta_len[0], l_mg->emeta_alloc_type,
GFP_KERNEL);
@ -666,12 +664,10 @@ void pblk_gc_exit(struct pblk *pblk)
kthread_stop(gc->gc_reader_ts);
flush_workqueue(gc->gc_reader_wq);
if (gc->gc_reader_wq)
destroy_workqueue(gc->gc_reader_wq);
destroy_workqueue(gc->gc_reader_wq);
flush_workqueue(gc->gc_line_reader_wq);
if (gc->gc_line_reader_wq)
destroy_workqueue(gc->gc_line_reader_wq);
destroy_workqueue(gc->gc_line_reader_wq);
if (gc->gc_writer_ts)
kthread_stop(gc->gc_writer_ts);

866
drivers/lightnvm/pblk-init.c
View file

File diff suppressed because it is too large Load diff

6
drivers/lightnvm/pblk-map.c
View file

@ -65,6 +65,8 @@ static void pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
lba_list[paddr] = cpu_to_le64(w_ctx->lba);
if (lba_list[paddr] != addr_empty)
line->nr_valid_lbas++;
else
atomic64_inc(&pblk->pad_wa);
} else {
lba_list[paddr] = meta_list[i].lba = addr_empty;
__pblk_map_invalidate(pblk, line, paddr);
@ -125,7 +127,7 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd,
atomic_dec(&e_line->left_eblks);
*erase_ppa = rqd->ppa_list[i];
erase_ppa->g.blk = e_line->id;
erase_ppa->a.blk = e_line->id;
spin_unlock(&e_line->lock);
@ -166,6 +168,6 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd,
set_bit(bit, e_line->erase_bitmap);
atomic_dec(&e_line->left_eblks);
*erase_ppa = pblk->luns[bit].bppa; /* set ch and lun */
erase_ppa->g.blk = e_line->id;
erase_ppa->a.blk = e_line->id;
}
}

21
drivers/lightnvm/pblk-rb.c
View file

@ -355,10 +355,13 @@ static int pblk_rb_flush_point_set(struct pblk_rb *rb, struct bio *bio,
struct pblk_rb_entry *entry;
unsigned int sync, flush_point;
pblk_rb_sync_init(rb, NULL);
sync = READ_ONCE(rb->sync);
if (pos == sync)
if (pos == sync) {
pblk_rb_sync_end(rb, NULL);
return 0;
}
#ifdef CONFIG_NVM_DEBUG
atomic_inc(&rb->inflight_flush_point);
@ -367,8 +370,6 @@ static int pblk_rb_flush_point_set(struct pblk_rb *rb, struct bio *bio,
flush_point = (pos == 0) ? (rb->nr_entries - 1) : (pos - 1);
entry = &rb->entries[flush_point];
pblk_rb_sync_init(rb, NULL);
/* Protect flush points */
smp_store_release(&rb->flush_point, flush_point);
@ -437,9 +438,7 @@ static int pblk_rb_may_write_flush(struct pblk_rb *rb, unsigned int nr_entries,
if (bio->bi_opf & REQ_PREFLUSH) {
struct pblk *pblk = container_of(rb, struct pblk, rwb);
#ifdef CONFIG_NVM_DEBUG
atomic_long_inc(&pblk->nr_flush);
#endif
atomic64_inc(&pblk->nr_flush);
if (pblk_rb_flush_point_set(&pblk->rwb, bio, mem))
*io_ret = NVM_IO_OK;
}
@ -620,11 +619,17 @@ unsigned int pblk_rb_read_to_bio(struct pblk_rb *rb, struct nvm_rq *rqd,
pr_err("pblk: could not pad page in write bio\n");
return NVM_IO_ERR;
}
if (pad < pblk->min_write_pgs)
atomic64_inc(&pblk->pad_dist[pad - 1]);
else
pr_warn("pblk: padding more than min. sectors\n");
atomic64_add(pad, &pblk->pad_wa);
}
#ifdef CONFIG_NVM_DEBUG
atomic_long_add(pad, &((struct pblk *)
(container_of(rb, struct pblk, rwb)))->padded_writes);
atomic_long_add(pad, &pblk->padded_writes);
#endif
return NVM_IO_OK;

2
drivers/lightnvm/pblk-read.c
View file

@ -563,7 +563,7 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
if (!(gc_rq->secs_to_gc))
goto out;
data_len = (gc_rq->secs_to_gc) * geo->sec_size;
data_len = (gc_rq->secs_to_gc) * geo->csecs;
bio = pblk_bio_map_addr(pblk, gc_rq->data, gc_rq->secs_to_gc, data_len,
PBLK_VMALLOC_META, GFP_KERNEL);
if (IS_ERR(bio)) {

91
drivers/lightnvm/pblk-recovery.c
View file

@ -21,17 +21,15 @@ void pblk_submit_rec(struct work_struct *work)
struct pblk_rec_ctx *recovery =
container_of(work, struct pblk_rec_ctx, ws_rec);
struct pblk *pblk = recovery->pblk;
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_rq *rqd = recovery->rqd;
struct pblk_c_ctx *c_ctx = nvm_rq_to_pdu(rqd);
int max_secs = nvm_max_phys_sects(dev);
struct bio *bio;
unsigned int nr_rec_secs;
unsigned int pgs_read;
int ret;
nr_rec_secs = bitmap_weight((unsigned long int *)&rqd->ppa_status,
max_secs);
NVM_MAX_VLBA);
bio = bio_alloc(GFP_KERNEL, nr_rec_secs);
@ -74,8 +72,6 @@ int pblk_recov_setup_rq(struct pblk *pblk, struct pblk_c_ctx *c_ctx,
struct pblk_rec_ctx *recovery, u64 *comp_bits,
unsigned int comp)
{
struct nvm_tgt_dev *dev = pblk->dev;
int max_secs = nvm_max_phys_sects(dev);
struct nvm_rq *rec_rqd;
struct pblk_c_ctx *rec_ctx;
int nr_entries = c_ctx->nr_valid + c_ctx->nr_padded;
@ -86,7 +82,7 @@ int pblk_recov_setup_rq(struct pblk *pblk, struct pblk_c_ctx *c_ctx,
/* Copy completion bitmap, but exclude the first X completed entries */
bitmap_shift_right((unsigned long int *)&rec_rqd->ppa_status,
(unsigned long int *)comp_bits,
comp, max_secs);
comp, NVM_MAX_VLBA);
/* Save the context for the entries that need to be re-written and
* update current context with the completed entries.
@ -188,7 +184,7 @@ static int pblk_calc_sec_in_line(struct pblk *pblk, struct pblk_line *line)
int nr_bb = bitmap_weight(line->blk_bitmap, lm->blk_per_line);
return lm->sec_per_line - lm->smeta_sec - lm->emeta_sec[0] -
nr_bb * geo->sec_per_chk;
nr_bb * geo->clba;
}
struct pblk_recov_alloc {
@ -236,7 +232,7 @@ static int pblk_recov_read_oob(struct pblk *pblk, struct pblk_line *line,
rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
if (!rq_ppas)
rq_ppas = pblk->min_write_pgs;
rq_len = rq_ppas * geo->sec_size;
rq_len = rq_ppas * geo->csecs;
bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
if (IS_ERR(bio))
@ -355,7 +351,7 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line,
if (!pad_rq)
return -ENOMEM;
data = vzalloc(pblk->max_write_pgs * geo->sec_size);
data = vzalloc(pblk->max_write_pgs * geo->csecs);
if (!data) {
ret = -ENOMEM;
goto free_rq;
@ -372,7 +368,7 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line,
goto fail_free_pad;
}
rq_len = rq_ppas * geo->sec_size;
rq_len = rq_ppas * geo->csecs;
meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL, &dma_meta_list);
if (!meta_list) {
@ -513,7 +509,7 @@ static int pblk_recov_scan_all_oob(struct pblk *pblk, struct pblk_line *line,
rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
if (!rq_ppas)
rq_ppas = pblk->min_write_pgs;
rq_len = rq_ppas * geo->sec_size;
rq_len = rq_ppas * geo->csecs;
bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
if (IS_ERR(bio))
@ -644,7 +640,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
if (!rq_ppas)
rq_ppas = pblk->min_write_pgs;
rq_len = rq_ppas * geo->sec_size;
rq_len = rq_ppas * geo->csecs;
bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
if (IS_ERR(bio))
@ -749,7 +745,7 @@ static int pblk_recov_l2p_from_oob(struct pblk *pblk, struct pblk_line *line)
ppa_list = (void *)(meta_list) + pblk_dma_meta_size;
dma_ppa_list = dma_meta_list + pblk_dma_meta_size;
data = kcalloc(pblk->max_write_pgs, geo->sec_size, GFP_KERNEL);
data = kcalloc(pblk->max_write_pgs, geo->csecs, GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
goto free_meta_list;
@ -826,6 +822,63 @@ static u64 pblk_line_emeta_start(struct pblk *pblk, struct pblk_line *line)
return emeta_start;
}
static int pblk_recov_check_line_version(struct pblk *pblk,
struct line_emeta *emeta)
{
struct line_header *header = &emeta->header;
if (header->version_major != EMETA_VERSION_MAJOR) {
pr_err("pblk: line major version mismatch: %d, expected: %d\n",
header->version_major, EMETA_VERSION_MAJOR);
return 1;
}
#ifdef NVM_DEBUG
if (header->version_minor > EMETA_VERSION_MINOR)
pr_info("pblk: newer line minor version found: %d\n", line_v);
#endif
return 0;
}
static void pblk_recov_wa_counters(struct pblk *pblk,
struct line_emeta *emeta)
{
struct pblk_line_meta *lm = &pblk->lm;
struct line_header *header = &emeta->header;
struct wa_counters *wa = emeta_to_wa(lm, emeta);
/* WA counters were introduced in emeta version 0.2 */
if (header->version_major > 0 || header->version_minor >= 2) {
u64 user = le64_to_cpu(wa->user);
u64 pad = le64_to_cpu(wa->pad);
u64 gc = le64_to_cpu(wa->gc);
atomic64_set(&pblk->user_wa, user);
atomic64_set(&pblk->pad_wa, pad);
atomic64_set(&pblk->gc_wa, gc);
pblk->user_rst_wa = user;
pblk->pad_rst_wa = pad;
pblk->gc_rst_wa = gc;
}
}
static int pblk_line_was_written(struct pblk_line *line,
struct pblk_line_meta *lm)
{
int i;
int state_mask = NVM_CHK_ST_OFFLINE | NVM_CHK_ST_FREE;
for (i = 0; i < lm->blk_per_line; i++) {
if (!(line->chks[i].state & state_mask))
return 1;
}
return 0;
}
struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
{
struct pblk_line_meta *lm = &pblk->lm;
@ -862,6 +915,9 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
line->lun_bitmap = ((void *)(smeta_buf)) +
sizeof(struct line_smeta);
if (!pblk_line_was_written(line, lm))
continue;
/* Lines that cannot be read are assumed as not written here */
if (pblk_line_read_smeta(pblk, line))
continue;
@ -873,9 +929,9 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
if (le32_to_cpu(smeta_buf->header.identifier) != PBLK_MAGIC)
continue;
if (smeta_buf->header.version != SMETA_VERSION) {
if (smeta_buf->header.version_major != SMETA_VERSION_MAJOR) {
pr_err("pblk: found incompatible line version %u\n",
le16_to_cpu(smeta_buf->header.version));
smeta_buf->header.version_major);
return ERR_PTR(-EINVAL);
}
@ -943,6 +999,11 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
goto next;
}
if (pblk_recov_check_line_version(pblk, line->emeta->buf))
return ERR_PTR(-EINVAL);
pblk_recov_wa_counters(pblk, line->emeta->buf);
if (pblk_recov_l2p_from_emeta(pblk, line))
pblk_recov_l2p_from_oob(pblk, line);

2
drivers/lightnvm/pblk-rl.c
View file

@ -200,7 +200,7 @@ void pblk_rl_init(struct pblk_rl *rl, int budget)
/* Consider sectors used for metadata */
sec_meta = (lm->smeta_sec + lm->emeta_sec[0]) * l_mg->nr_free_lines;
blk_meta = DIV_ROUND_UP(sec_meta, geo->sec_per_chk);
blk_meta = DIV_ROUND_UP(sec_meta, geo->clba);
rl->high = pblk->op_blks - blk_meta - lm->blk_per_line;
rl->high_pw = get_count_order(rl->high);

235
drivers/lightnvm/pblk-sysfs.c
View file

@ -39,8 +39,8 @@ static ssize_t pblk_sysfs_luns_show(struct pblk *pblk, char *page)
sz += snprintf(page + sz, PAGE_SIZE - sz,
"pblk: pos:%d, ch:%d, lun:%d - %d\n",
i,
rlun->bppa.g.ch,
rlun->bppa.g.lun,
rlun->bppa.a.ch,
rlun->bppa.a.lun,
active);
}
@ -115,24 +115,47 @@ static ssize_t pblk_sysfs_ppaf(struct pblk *pblk, char *page)
struct nvm_geo *geo = &dev->geo;
ssize_t sz = 0;
sz = snprintf(page, PAGE_SIZE - sz,
"g:(b:%d)blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
pblk->ppaf_bitsize,
pblk->ppaf.blk_offset, geo->ppaf.blk_len,
pblk->ppaf.pg_offset, geo->ppaf.pg_len,
pblk->ppaf.lun_offset, geo->ppaf.lun_len,
pblk->ppaf.ch_offset, geo->ppaf.ch_len,
pblk->ppaf.pln_offset, geo->ppaf.pln_len,
pblk->ppaf.sec_offset, geo->ppaf.sect_len);
if (geo->version == NVM_OCSSD_SPEC_12) {
struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->addrf;
struct nvm_addrf_12 *gppaf = (struct nvm_addrf_12 *)&geo->addrf;
sz += snprintf(page + sz, PAGE_SIZE - sz,
"d:blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
geo->ppaf.blk_offset, geo->ppaf.blk_len,
geo->ppaf.pg_offset, geo->ppaf.pg_len,
geo->ppaf.lun_offset, geo->ppaf.lun_len,
geo->ppaf.ch_offset, geo->ppaf.ch_len,
geo->ppaf.pln_offset, geo->ppaf.pln_len,
geo->ppaf.sect_offset, geo->ppaf.sect_len);
sz = snprintf(page, PAGE_SIZE,
"g:(b:%d)blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
pblk->addrf_len,
ppaf->blk_offset, ppaf->blk_len,
ppaf->pg_offset, ppaf->pg_len,
ppaf->lun_offset, ppaf->lun_len,
ppaf->ch_offset, ppaf->ch_len,
ppaf->pln_offset, ppaf->pln_len,
ppaf->sec_offset, ppaf->sec_len);
sz += snprintf(page + sz, PAGE_SIZE - sz,
"d:blk:%d/%d,pg:%d/%d,lun:%d/%d,ch:%d/%d,pl:%d/%d,sec:%d/%d\n",
gppaf->blk_offset, gppaf->blk_len,
gppaf->pg_offset, gppaf->pg_len,
gppaf->lun_offset, gppaf->lun_len,
gppaf->ch_offset, gppaf->ch_len,
gppaf->pln_offset, gppaf->pln_len,
gppaf->sec_offset, gppaf->sec_len);
} else {
struct nvm_addrf *ppaf = &pblk->addrf;
struct nvm_addrf *gppaf = &geo->addrf;
sz = snprintf(page, PAGE_SIZE,
"pblk:(s:%d)ch:%d/%d,lun:%d/%d,chk:%d/%d/sec:%d/%d\n",
pblk->addrf_len,
ppaf->ch_offset, ppaf->ch_len,
ppaf->lun_offset, ppaf->lun_len,
ppaf->chk_offset, ppaf->chk_len,
ppaf->sec_offset, ppaf->sec_len);
sz += snprintf(page + sz, PAGE_SIZE - sz,
"device:ch:%d/%d,lun:%d/%d,chk:%d/%d,sec:%d/%d\n",
gppaf->ch_offset, gppaf->ch_len,
gppaf->lun_offset, gppaf->lun_len,
gppaf->chk_offset, gppaf->chk_len,
gppaf->sec_offset, gppaf->sec_len);
}
return sz;
}
@ -288,7 +311,7 @@ static ssize_t pblk_sysfs_lines_info(struct pblk *pblk, char *page)
"blk_line:%d, sec_line:%d, sec_blk:%d\n",
lm->blk_per_line,
lm->sec_per_line,
geo->sec_per_chk);
geo->clba);
return sz;
}
@ -298,15 +321,104 @@ static ssize_t pblk_sysfs_get_sec_per_write(struct pblk *pblk, char *page)
return snprintf(page, PAGE_SIZE, "%d\n", pblk->sec_per_write);
}
static ssize_t pblk_get_write_amp(u64 user, u64 gc, u64 pad,
char *page)
{
int sz;
sz = snprintf(page, PAGE_SIZE,
"user:%lld gc:%lld pad:%lld WA:",
user, gc, pad);
if (!user) {
sz += snprintf(page + sz, PAGE_SIZE - sz, "NaN\n");
} else {
u64 wa_int;
u32 wa_frac;
wa_int = (user + gc + pad) * 100000;
wa_int = div_u64(wa_int, user);
wa_int = div_u64_rem(wa_int, 100000, &wa_frac);
sz += snprintf(page + sz, PAGE_SIZE - sz, "%llu.%05u\n",
wa_int, wa_frac);
}
return sz;
}
static ssize_t pblk_sysfs_get_write_amp_mileage(struct pblk *pblk, char *page)
{
return pblk_get_write_amp(atomic64_read(&pblk->user_wa),
atomic64_read(&pblk->gc_wa), atomic64_read(&pblk->pad_wa),
page);
}
static ssize_t pblk_sysfs_get_write_amp_trip(struct pblk *pblk, char *page)
{
return pblk_get_write_amp(
atomic64_read(&pblk->user_wa) - pblk->user_rst_wa,
atomic64_read(&pblk->gc_wa) - pblk->gc_rst_wa,
atomic64_read(&pblk->pad_wa) - pblk->pad_rst_wa, page);
}
static long long bucket_percentage(unsigned long long bucket,
unsigned long long total)
{
int p = bucket * 100;
p = div_u64(p, total);
return p;
}
static ssize_t pblk_sysfs_get_padding_dist(struct pblk *pblk, char *page)
{
int sz = 0;
unsigned long long total;
unsigned long long total_buckets = 0;
int buckets = pblk->min_write_pgs - 1;
int i;
total = atomic64_read(&pblk->nr_flush) - pblk->nr_flush_rst;
if (!total) {
for (i = 0; i < (buckets + 1); i++)
sz += snprintf(page + sz, PAGE_SIZE - sz,
"%d:0 ", i);
sz += snprintf(page + sz, PAGE_SIZE - sz, "\n");
return sz;
}
for (i = 0; i < buckets; i++)
total_buckets += atomic64_read(&pblk->pad_dist[i]);
sz += snprintf(page + sz, PAGE_SIZE - sz, "0:%lld%% ",
bucket_percentage(total - total_buckets, total));
for (i = 0; i < buckets; i++) {
unsigned long long p;
p = bucket_percentage(atomic64_read(&pblk->pad_dist[i]),
total);
sz += snprintf(page + sz, PAGE_SIZE - sz, "%d:%lld%% ",
i + 1, p);
}
sz += snprintf(page + sz, PAGE_SIZE - sz, "\n");
return sz;
}
#ifdef CONFIG_NVM_DEBUG
static ssize_t pblk_sysfs_stats_debug(struct pblk *pblk, char *page)
{
return snprintf(page, PAGE_SIZE,
"%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\n",
"%lu\t%lu\t%ld\t%llu\t%ld\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\n",
atomic_long_read(&pblk->inflight_writes),
atomic_long_read(&pblk->inflight_reads),
atomic_long_read(&pblk->req_writes),
atomic_long_read(&pblk->nr_flush),
(u64)atomic64_read(&pblk->nr_flush),
atomic_long_read(&pblk->padded_writes),
atomic_long_read(&pblk->padded_wb),
atomic_long_read(&pblk->sub_writes),
@ -360,6 +472,56 @@ static ssize_t pblk_sysfs_set_sec_per_write(struct pblk *pblk,
return len;
}
static ssize_t pblk_sysfs_set_write_amp_trip(struct pblk *pblk,
const char *page, size_t len)
{
size_t c_len;
int reset_value;
c_len = strcspn(page, "\n");
if (c_len >= len)
return -EINVAL;
if (kstrtouint(page, 0, &reset_value))
return -EINVAL;
if (reset_value != 0)
return -EINVAL;
pblk->user_rst_wa = atomic64_read(&pblk->user_wa);
pblk->pad_rst_wa = atomic64_read(&pblk->pad_wa);
pblk->gc_rst_wa = atomic64_read(&pblk->gc_wa);
return len;
}
static ssize_t pblk_sysfs_set_padding_dist(struct pblk *pblk,
const char *page, size_t len)
{
size_t c_len;
int reset_value;
int buckets = pblk->min_write_pgs - 1;
int i;
c_len = strcspn(page, "\n");
if (c_len >= len)
return -EINVAL;
if (kstrtouint(page, 0, &reset_value))
return -EINVAL;
if (reset_value != 0)
return -EINVAL;
for (i = 0; i < buckets; i++)
atomic64_set(&pblk->pad_dist[i], 0);
pblk->nr_flush_rst = atomic64_read(&pblk->nr_flush);
return len;
}
static struct attribute sys_write_luns = {
.name = "write_luns",
.mode = 0444,
@ -410,6 +572,21 @@ static struct attribute sys_max_sec_per_write = {
.mode = 0644,
};
static struct attribute sys_write_amp_mileage = {
.name = "write_amp_mileage",
.mode = 0444,
};
static struct attribute sys_write_amp_trip = {
.name = "write_amp_trip",
.mode = 0644,
};
static struct attribute sys_padding_dist = {
.name = "padding_dist",
.mode = 0644,
};
#ifdef CONFIG_NVM_DEBUG
static struct attribute sys_stats_debug_attr = {
.name = "stats",
@ -428,6 +605,9 @@ static struct attribute *pblk_attrs[] = {
&sys_stats_ppaf_attr,
&sys_lines_attr,
&sys_lines_info_attr,
&sys_write_amp_mileage,
&sys_write_amp_trip,
&sys_padding_dist,
#ifdef CONFIG_NVM_DEBUG
&sys_stats_debug_attr,
#endif
@ -457,6 +637,12 @@ static ssize_t pblk_sysfs_show(struct kobject *kobj, struct attribute *attr,
return pblk_sysfs_lines_info(pblk, buf);
else if (strcmp(attr->name, "max_sec_per_write") == 0)
return pblk_sysfs_get_sec_per_write(pblk, buf);
else if (strcmp(attr->name, "write_amp_mileage") == 0)
return pblk_sysfs_get_write_amp_mileage(pblk, buf);
else if (strcmp(attr->name, "write_amp_trip") == 0)
return pblk_sysfs_get_write_amp_trip(pblk, buf);
else if (strcmp(attr->name, "padding_dist") == 0)
return pblk_sysfs_get_padding_dist(pblk, buf);
#ifdef CONFIG_NVM_DEBUG
else if (strcmp(attr->name, "stats") == 0)
return pblk_sysfs_stats_debug(pblk, buf);
@ -473,7 +659,10 @@ static ssize_t pblk_sysfs_store(struct kobject *kobj, struct attribute *attr,
return pblk_sysfs_gc_force(pblk, buf, len);
else if (strcmp(attr->name, "max_sec_per_write") == 0)
return pblk_sysfs_set_sec_per_write(pblk, buf, len);
else if (strcmp(attr->name, "write_amp_trip") == 0)
return pblk_sysfs_set_write_amp_trip(pblk, buf, len);
else if (strcmp(attr->name, "padding_dist") == 0)
return pblk_sysfs_set_padding_dist(pblk, buf, len);
return 0;
}

2
drivers/lightnvm/pblk-write.c
View file

@ -333,7 +333,7 @@ int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line)
m_ctx = nvm_rq_to_pdu(rqd);
m_ctx->private = meta_line;
rq_len = rq_ppas * geo->sec_size;
rq_len = rq_ppas * geo->csecs;
data = ((void *)emeta->buf) + emeta->mem;
bio = pblk_bio_map_addr(pblk, data, rq_ppas, rq_len,

304
drivers/lightnvm/pblk.h
View file

@ -201,12 +201,6 @@ struct pblk_rb {
struct pblk_lun {
struct ppa_addr bppa;
u8 *bb_list; /* Bad block list for LUN. Only used on
* bring up. Bad blocks are managed
* within lines on run-time.
*/
struct semaphore wr_sem;
};
@ -303,6 +297,7 @@ enum {
PBLK_LINETYPE_DATA = 2,
/* Line state */
PBLK_LINESTATE_NEW = 9,
PBLK_LINESTATE_FREE = 10,
PBLK_LINESTATE_OPEN = 11,
PBLK_LINESTATE_CLOSED = 12,
@ -320,14 +315,26 @@ enum {
};
#define PBLK_MAGIC 0x70626c6b /*pblk*/
#define SMETA_VERSION cpu_to_le16(1)
/* emeta/smeta persistent storage format versions:
* Changes in major version requires offline migration.
* Changes in minor version are handled automatically during
* recovery.
*/
#define SMETA_VERSION_MAJOR (0)
#define SMETA_VERSION_MINOR (1)
#define EMETA_VERSION_MAJOR (0)
#define EMETA_VERSION_MINOR (2)
struct line_header {
__le32 crc;
__le32 identifier; /* pblk identifier */
__u8 uuid[16]; /* instance uuid */
__le16 type; /* line type */
__le16 version; /* type version */
__u8 version_major; /* version major */
__u8 version_minor; /* version minor */
__le32 id; /* line id for current line */
};
@ -349,11 +356,13 @@ struct line_smeta {
__le64 lun_bitmap[];
};
/*
* Metadata layout in media:
* First sector:
* 1. struct line_emeta
* 2. bad block bitmap (u64 * window_wr_lun)
* 3. write amplification counters
* Mid sectors (start at lbas_sector):
* 3. nr_lbas (u64) forming lba list
* Last sectors (start at vsc_sector):
@ -377,7 +386,15 @@ struct line_emeta {
__le32 next_id; /* Line id for next line */
__le64 nr_lbas; /* Number of lbas mapped in line */
__le64 nr_valid_lbas; /* Number of valid lbas mapped in line */
__le64 bb_bitmap[]; /* Updated bad block bitmap for line */
__le64 bb_bitmap[]; /* Updated bad block bitmap for line */
};
/* Write amplification counters stored on media */
struct wa_counters {
__le64 user; /* Number of user written sectors */
__le64 gc; /* Number of sectors written by GC*/
__le64 pad; /* Number of padded sectors */
};
struct pblk_emeta {
@ -410,6 +427,8 @@ struct pblk_line {
unsigned long *lun_bitmap; /* Bitmap for LUNs mapped in line */
struct nvm_chk_meta *chks; /* Chunks forming line */
struct pblk_smeta *smeta; /* Start metadata */
struct pblk_emeta *emeta; /* End medatada */
@ -507,10 +526,11 @@ struct pblk_line_meta {
unsigned int smeta_sec; /* Sectors needed for smeta */
unsigned int emeta_len[4]; /* Lengths for emeta:
* [0]: Total length
* [1]: struct line_emeta length
* [2]: L2P portion length
* [3]: vsc list length
* [0]: Total
* [1]: struct line_emeta +
* bb_bitmap + struct wa_counters
* [2]: L2P portion
* [3]: vsc
*/
unsigned int emeta_sec[4]; /* Sectors needed for emeta. Same layout
* as emeta_len
@ -534,21 +554,6 @@ struct pblk_line_meta {
unsigned int meta_distance; /* Distance between data and metadata */
};
struct pblk_addr_format {
u64 ch_mask;
u64 lun_mask;
u64 pln_mask;
u64 blk_mask;
u64 pg_mask;
u64 sec_mask;
u8 ch_offset;
u8 lun_offset;
u8 pln_offset;
u8 blk_offset;
u8 pg_offset;
u8 sec_offset;
};
enum {
PBLK_STATE_RUNNING = 0,
PBLK_STATE_STOPPING = 1,
@ -556,6 +561,18 @@ enum {
PBLK_STATE_STOPPED = 3,
};
/* Internal format to support not power-of-2 device formats */
struct pblk_addrf {
/* gen to dev */
int sec_stripe;
int ch_stripe;
int lun_stripe;
/* dev to gen */
int sec_lun_stripe;
int sec_ws_stripe;
};
struct pblk {
struct nvm_tgt_dev *dev;
struct gendisk *disk;
@ -568,8 +585,9 @@ struct pblk {
struct pblk_line_mgmt l_mg; /* Line management */
struct pblk_line_meta lm; /* Line metadata */
int ppaf_bitsize;
struct pblk_addr_format ppaf;
struct nvm_addrf addrf; /* Aligned address format */
struct pblk_addrf uaddrf; /* Unaligned address format */
int addrf_len;
struct pblk_rb rwb;
@ -592,12 +610,27 @@ struct pblk {
int sec_per_write;
unsigned char instance_uuid[16];
/* Persistent write amplification counters, 4kb sector I/Os */
atomic64_t user_wa; /* Sectors written by user */
atomic64_t gc_wa; /* Sectors written by GC */
atomic64_t pad_wa; /* Padded sectors written */
/* Reset values for delta write amplification measurements */
u64 user_rst_wa;
u64 gc_rst_wa;
u64 pad_rst_wa;
/* Counters used for calculating padding distribution */
atomic64_t *pad_dist; /* Padding distribution buckets */
u64 nr_flush_rst; /* Flushes reset value for pad dist.*/
atomic64_t nr_flush; /* Number of flush/fua I/O */
#ifdef CONFIG_NVM_DEBUG
/* All debug counters apply to 4kb sector I/Os */
/* Non-persistent debug counters, 4kb sector I/Os */
atomic_long_t inflight_writes; /* Inflight writes (user and gc) */
atomic_long_t padded_writes; /* Sectors padded due to flush/fua */
atomic_long_t padded_wb; /* Sectors padded in write buffer */
atomic_long_t nr_flush; /* Number of flush/fua I/O */
atomic_long_t req_writes; /* Sectors stored on write buffer */
atomic_long_t sub_writes; /* Sectors submitted from buffer */
atomic_long_t sync_writes; /* Sectors synced to media */
@ -712,6 +745,10 @@ void pblk_set_sec_per_write(struct pblk *pblk, int sec_per_write);
int pblk_setup_w_rec_rq(struct pblk *pblk, struct nvm_rq *rqd,
struct pblk_c_ctx *c_ctx);
void pblk_discard(struct pblk *pblk, struct bio *bio);
struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk);
struct nvm_chk_meta *pblk_chunk_get_off(struct pblk *pblk,
struct nvm_chk_meta *lp,
struct ppa_addr ppa);
void pblk_log_write_err(struct pblk *pblk, struct nvm_rq *rqd);
void pblk_log_read_err(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd);
@ -888,6 +925,12 @@ static inline void *emeta_to_bb(struct line_emeta *emeta)
return emeta->bb_bitmap;
}
static inline void *emeta_to_wa(struct pblk_line_meta *lm,
struct line_emeta *emeta)
{
return emeta->bb_bitmap + lm->blk_bitmap_len;
}
static inline void *emeta_to_lbas(struct pblk *pblk, struct line_emeta *emeta)
{
return ((void *)emeta + pblk->lm.emeta_len[1]);
@ -903,38 +946,60 @@ static inline int pblk_line_vsc(struct pblk_line *line)
return le32_to_cpu(*line->vsc);
}
#define NVM_MEM_PAGE_WRITE (8)
static inline int pblk_pad_distance(struct pblk *pblk)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
return NVM_MEM_PAGE_WRITE * geo->all_luns * geo->sec_per_pl;
return geo->mw_cunits * geo->all_luns * geo->ws_opt;
}
static inline int pblk_ppa_to_line(struct ppa_addr p)
{
return p.g.blk;
return p.a.blk;
}
static inline int pblk_ppa_to_pos(struct nvm_geo *geo, struct ppa_addr p)
{
return p.g.lun * geo->nr_chnls + p.g.ch;
return p.a.lun * geo->num_ch + p.a.ch;
}
static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr,
u64 line_id)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct ppa_addr ppa;
ppa.ppa = 0;
ppa.g.blk = line_id;
ppa.g.pg = (paddr & pblk->ppaf.pg_mask) >> pblk->ppaf.pg_offset;
ppa.g.lun = (paddr & pblk->ppaf.lun_mask) >> pblk->ppaf.lun_offset;
ppa.g.ch = (paddr & pblk->ppaf.ch_mask) >> pblk->ppaf.ch_offset;
ppa.g.pl = (paddr & pblk->ppaf.pln_mask) >> pblk->ppaf.pln_offset;
ppa.g.sec = (paddr & pblk->ppaf.sec_mask) >> pblk->ppaf.sec_offset;
if (geo->version == NVM_OCSSD_SPEC_12) {
struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->addrf;
ppa.ppa = 0;
ppa.g.blk = line_id;
ppa.g.pg = (paddr & ppaf->pg_mask) >> ppaf->pg_offset;
ppa.g.lun = (paddr & ppaf->lun_mask) >> ppaf->lun_offset;
ppa.g.ch = (paddr & ppaf->ch_mask) >> ppaf->ch_offset;
ppa.g.pl = (paddr & ppaf->pln_mask) >> ppaf->pln_offset;
ppa.g.sec = (paddr & ppaf->sec_mask) >> ppaf->sec_offset;
} else {
struct pblk_addrf *uaddrf = &pblk->uaddrf;
int secs, chnls, luns;
ppa.ppa = 0;
ppa.m.chk = line_id;
paddr = div_u64_rem(paddr, uaddrf->sec_stripe, &secs);
ppa.m.sec = secs;
paddr = div_u64_rem(paddr, uaddrf->ch_stripe, &chnls);
ppa.m.grp = chnls;
paddr = div_u64_rem(paddr, uaddrf->lun_stripe, &luns);
ppa.m.pu = luns;
ppa.m.sec += uaddrf->sec_stripe * paddr;
}
return ppa;
}
@ -942,13 +1007,30 @@ static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr,
static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk,
struct ppa_addr p)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
u64 paddr;
paddr = (u64)p.g.pg << pblk->ppaf.pg_offset;
paddr |= (u64)p.g.lun << pblk->ppaf.lun_offset;
paddr |= (u64)p.g.ch << pblk->ppaf.ch_offset;
paddr |= (u64)p.g.pl << pblk->ppaf.pln_offset;
paddr |= (u64)p.g.sec << pblk->ppaf.sec_offset;
if (geo->version == NVM_OCSSD_SPEC_12) {
struct nvm_addrf_12 *ppaf = (struct nvm_addrf_12 *)&pblk->addrf;
paddr = (u64)p.g.ch << ppaf->ch_offset;
paddr |= (u64)p.g.lun << ppaf->lun_offset;
paddr |= (u64)p.g.pg << ppaf->pg_offset;
paddr |= (u64)p.g.pl << ppaf->pln_offset;
paddr |= (u64)p.g.sec << ppaf->sec_offset;
} else {
struct pblk_addrf *uaddrf = &pblk->uaddrf;
u64 secs = p.m.sec;
int sec_stripe;
paddr = (u64)p.m.grp * uaddrf->sec_stripe;
paddr += (u64)p.m.pu * uaddrf->sec_lun_stripe;
secs = div_u64_rem(secs, uaddrf->sec_stripe, &sec_stripe);
paddr += secs * uaddrf->sec_ws_stripe;
paddr += sec_stripe;
}
return paddr;
}
@ -965,18 +1047,37 @@ static inline struct ppa_addr pblk_ppa32_to_ppa64(struct pblk *pblk, u32 ppa32)
ppa64.c.line = ppa32 & ((~0U) >> 1);
ppa64.c.is_cached = 1;
} else {
ppa64.g.blk = (ppa32 & pblk->ppaf.blk_mask) >>
pblk->ppaf.blk_offset;
ppa64.g.pg = (ppa32 & pblk->ppaf.pg_mask) >>
pblk->ppaf.pg_offset;
ppa64.g.lun = (ppa32 & pblk->ppaf.lun_mask) >>
pblk->ppaf.lun_offset;
ppa64.g.ch = (ppa32 & pblk->ppaf.ch_mask) >>
pblk->ppaf.ch_offset;
ppa64.g.pl = (ppa32 & pblk->ppaf.pln_mask) >>
pblk->ppaf.pln_offset;
ppa64.g.sec = (ppa32 & pblk->ppaf.sec_mask) >>
pblk->ppaf.sec_offset;
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
if (geo->version == NVM_OCSSD_SPEC_12) {
struct nvm_addrf_12 *ppaf =
(struct nvm_addrf_12 *)&pblk->addrf;
ppa64.g.ch = (ppa32 & ppaf->ch_mask) >>
ppaf->ch_offset;
ppa64.g.lun = (ppa32 & ppaf->lun_mask) >>
ppaf->lun_offset;
ppa64.g.blk = (ppa32 & ppaf->blk_mask) >>
ppaf->blk_offset;
ppa64.g.pg = (ppa32 & ppaf->pg_mask) >>
ppaf->pg_offset;
ppa64.g.pl = (ppa32 & ppaf->pln_mask) >>
ppaf->pln_offset;
ppa64.g.sec = (ppa32 & ppaf->sec_mask) >>
ppaf->sec_offset;
} else {
struct nvm_addrf *lbaf = &pblk->addrf;
ppa64.m.grp = (ppa32 & lbaf->ch_mask) >>
lbaf->ch_offset;
ppa64.m.pu = (ppa32 & lbaf->lun_mask) >>
lbaf->lun_offset;
ppa64.m.chk = (ppa32 & lbaf->chk_mask) >>
lbaf->chk_offset;
ppa64.m.sec = (ppa32 & lbaf->sec_mask) >>
lbaf->sec_offset;
}
}
return ppa64;
@ -992,12 +1093,27 @@ static inline u32 pblk_ppa64_to_ppa32(struct pblk *pblk, struct ppa_addr ppa64)
ppa32 |= ppa64.c.line;
ppa32 |= 1U << 31;
} else {
ppa32 |= ppa64.g.blk << pblk->ppaf.blk_offset;
ppa32 |= ppa64.g.pg << pblk->ppaf.pg_offset;
ppa32 |= ppa64.g.lun << pblk->ppaf.lun_offset;
ppa32 |= ppa64.g.ch << pblk->ppaf.ch_offset;
ppa32 |= ppa64.g.pl << pblk->ppaf.pln_offset;
ppa32 |= ppa64.g.sec << pblk->ppaf.sec_offset;
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
if (geo->version == NVM_OCSSD_SPEC_12) {
struct nvm_addrf_12 *ppaf =
(struct nvm_addrf_12 *)&pblk->addrf;
ppa32 |= ppa64.g.ch << ppaf->ch_offset;
ppa32 |= ppa64.g.lun << ppaf->lun_offset;
ppa32 |= ppa64.g.blk << ppaf->blk_offset;
ppa32 |= ppa64.g.pg << ppaf->pg_offset;
ppa32 |= ppa64.g.pl << ppaf->pln_offset;
ppa32 |= ppa64.g.sec << ppaf->sec_offset;
} else {
struct nvm_addrf *lbaf = &pblk->addrf;
ppa32 |= ppa64.m.grp << lbaf->ch_offset;
ppa32 |= ppa64.m.pu << lbaf->lun_offset;
ppa32 |= ppa64.m.chk << lbaf->chk_offset;
ppa32 |= ppa64.m.sec << lbaf->sec_offset;
}
}
return ppa32;
@ -1008,7 +1124,7 @@ static inline struct ppa_addr pblk_trans_map_get(struct pblk *pblk,
{
struct ppa_addr ppa;
if (pblk->ppaf_bitsize < 32) {
if (pblk->addrf_len < 32) {
u32 *map = (u32 *)pblk->trans_map;
ppa = pblk_ppa32_to_ppa64(pblk, map[lba]);
@ -1024,7 +1140,7 @@ static inline struct ppa_addr pblk_trans_map_get(struct pblk *pblk,
static inline void pblk_trans_map_set(struct pblk *pblk, sector_t lba,
struct ppa_addr ppa)
{
if (pblk->ppaf_bitsize < 32) {
if (pblk->addrf_len < 32) {
u32 *map = (u32 *)pblk->trans_map;
map[lba] = pblk_ppa64_to_ppa32(pblk, ppa);
@ -1115,7 +1231,10 @@ static inline int pblk_set_progr_mode(struct pblk *pblk, int type)
struct nvm_geo *geo = &dev->geo;
int flags;
flags = geo->plane_mode >> 1;
if (geo->version == NVM_OCSSD_SPEC_20)
return 0;
flags = geo->pln_mode >> 1;
if (type == PBLK_WRITE)
flags |= NVM_IO_SCRAMBLE_ENABLE;
@ -1134,9 +1253,12 @@ static inline int pblk_set_read_mode(struct pblk *pblk, int type)
struct nvm_geo *geo = &dev->geo;
int flags;
if (geo->version == NVM_OCSSD_SPEC_20)
return 0;
flags = NVM_IO_SUSPEND | NVM_IO_SCRAMBLE_ENABLE;
if (type == PBLK_READ_SEQUENTIAL)
flags |= geo->plane_mode >> 1;
flags |= geo->pln_mode >> 1;
return flags;
}
@ -1147,16 +1269,21 @@ static inline int pblk_io_aligned(struct pblk *pblk, int nr_secs)
}
#ifdef CONFIG_NVM_DEBUG
static inline void print_ppa(struct ppa_addr *p, char *msg, int error)
static inline void print_ppa(struct nvm_geo *geo, struct ppa_addr *p,
char *msg, int error)
{
if (p->c.is_cached) {
pr_err("ppa: (%s: %x) cache line: %llu\n",
msg, error, (u64)p->c.line);
} else {
} else if (geo->version == NVM_OCSSD_SPEC_12) {
pr_err("ppa: (%s: %x):ch:%d,lun:%d,blk:%d,pg:%d,pl:%d,sec:%d\n",
msg, error,
p->g.ch, p->g.lun, p->g.blk,
p->g.pg, p->g.pl, p->g.sec);
} else {
pr_err("ppa: (%s: %x):ch:%d,lun:%d,chk:%d,sec:%d\n",
msg, error,
p->m.grp, p->m.pu, p->m.chk, p->m.sec);
}
}
@ -1166,13 +1293,13 @@ static inline void pblk_print_failed_rqd(struct pblk *pblk, struct nvm_rq *rqd,
int bit = -1;
if (rqd->nr_ppas == 1) {
print_ppa(&rqd->ppa_addr, "rqd", error);
print_ppa(&pblk->dev->geo, &rqd->ppa_addr, "rqd", error);
return;
}
while ((bit = find_next_bit((void *)&rqd->ppa_status, rqd->nr_ppas,
bit + 1)) < rqd->nr_ppas) {
print_ppa(&rqd->ppa_list[bit], "rqd", error);
print_ppa(&pblk->dev->geo, &rqd->ppa_list[bit], "rqd", error);
}
pr_err("error:%d, ppa_status:%llx\n", error, rqd->ppa_status);
@ -1188,16 +1315,25 @@ static inline int pblk_boundary_ppa_checks(struct nvm_tgt_dev *tgt_dev,
for (i = 0; i < nr_ppas; i++) {
ppa = &ppas[i];
if (!ppa->c.is_cached &&
ppa->g.ch < geo->nr_chnls &&
ppa->g.lun < geo->nr_luns &&
ppa->g.pl < geo->nr_planes &&
ppa->g.blk < geo->nr_chks &&
ppa->g.pg < geo->ws_per_chk &&
ppa->g.sec < geo->sec_per_pg)
continue;
if (geo->version == NVM_OCSSD_SPEC_12) {
if (!ppa->c.is_cached &&
ppa->g.ch < geo->num_ch &&
ppa->g.lun < geo->num_lun &&
ppa->g.pl < geo->num_pln &&
ppa->g.blk < geo->num_chk &&
ppa->g.pg < geo->num_pg &&
ppa->g.sec < geo->ws_min)
continue;
} else {
if (!ppa->c.is_cached &&
ppa->m.grp < geo->num_ch &&
ppa->m.pu < geo->num_lun &&
ppa->m.chk < geo->num_chk &&
ppa->m.sec < geo->clba)
continue;
}
print_ppa(ppa, "boundary", i);
print_ppa(geo, ppa, "boundary", i);
return 1;
}

3
drivers/md/bcache/alloc.c
View file

@ -287,7 +287,8 @@ do { \
break; \
\
mutex_unlock(&(ca)->set->bucket_lock); \
if (kthread_should_stop()) { \
if (kthread_should_stop() || \
test_bit(CACHE_SET_IO_DISABLE, &ca->set->flags)) { \
set_current_state(TASK_RUNNING); \
return 0; \
} \

57
drivers/md/bcache/bcache.h
View file

@ -188,6 +188,7 @@
#include <linux/refcount.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include <linux/kthread.h>
#include "bset.h"
#include "util.h"
@ -258,10 +259,11 @@ struct bcache_device {
struct gendisk *disk;
unsigned long flags;
#define BCACHE_DEV_CLOSING 0
#define BCACHE_DEV_DETACHING 1
#define BCACHE_DEV_UNLINK_DONE 2
#define BCACHE_DEV_CLOSING 0
#define BCACHE_DEV_DETACHING 1
#define BCACHE_DEV_UNLINK_DONE 2
#define BCACHE_DEV_WB_RUNNING 3
#define BCACHE_DEV_RATE_DW_RUNNING 4
unsigned nr_stripes;
unsigned stripe_size;
atomic_t *stripe_sectors_dirty;
@ -286,6 +288,12 @@ struct io {
sector_t last;
};
enum stop_on_failure {
BCH_CACHED_DEV_STOP_AUTO = 0,
BCH_CACHED_DEV_STOP_ALWAYS,
BCH_CACHED_DEV_STOP_MODE_MAX,
};
struct cached_dev {
struct list_head list;
struct bcache_device disk;
@ -359,6 +367,7 @@ struct cached_dev {
unsigned sequential_cutoff;
unsigned readahead;
unsigned io_disable:1;
unsigned verify:1;
unsigned bypass_torture_test:1;
@ -378,6 +387,11 @@ struct cached_dev {
unsigned writeback_rate_i_term_inverse;
unsigned writeback_rate_p_term_inverse;
unsigned writeback_rate_minimum;
enum stop_on_failure stop_when_cache_set_failed;
#define DEFAULT_CACHED_DEV_ERROR_LIMIT 64
atomic_t io_errors;
unsigned error_limit;
};
enum alloc_reserve {
@ -474,10 +488,15 @@ struct gc_stat {
*
* CACHE_SET_RUNNING means all cache devices have been registered and journal
* replay is complete.
*
* CACHE_SET_IO_DISABLE is set when bcache is stopping the whold cache set, all
* external and internal I/O should be denied when this flag is set.
*
*/
#define CACHE_SET_UNREGISTERING 0
#define CACHE_SET_STOPPING 1
#define CACHE_SET_RUNNING 2
#define CACHE_SET_IO_DISABLE 3
struct cache_set {
struct closure cl;
@ -867,8 +886,36 @@ static inline void wake_up_allocators(struct cache_set *c)
wake_up_process(ca->alloc_thread);
}
static inline void closure_bio_submit(struct cache_set *c,
struct bio *bio,
struct closure *cl)
{
closure_get(cl);
if (unlikely(test_bit(CACHE_SET_IO_DISABLE, &c->flags))) {
bio->bi_status = BLK_STS_IOERR;
bio_endio(bio);
return;
}
generic_make_request(bio);
}
/*
* Prevent the kthread exits directly, and make sure when kthread_stop()
* is called to stop a kthread, it is still alive. If a kthread might be
* stopped by CACHE_SET_IO_DISABLE bit set, wait_for_kthread_stop() is
* necessary before the kthread returns.
*/
static inline void wait_for_kthread_stop(void)
{
while (!kthread_should_stop()) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
}
}
/* Forward declarations */
void bch_count_backing_io_errors(struct cached_dev *dc, struct bio *bio);
void bch_count_io_errors(struct cache *, blk_status_t, int, const char *);
void bch_bbio_count_io_errors(struct cache_set *, struct bio *,
blk_status_t, const char *);
@ -896,6 +943,7 @@ int bch_bucket_alloc_set(struct cache_set *, unsigned,
struct bkey *, int, bool);
bool bch_alloc_sectors(struct cache_set *, struct bkey *, unsigned,
unsigned, unsigned, bool);
bool bch_cached_dev_error(struct cached_dev *dc);
__printf(2, 3)
bool bch_cache_set_error(struct cache_set *, const char *, ...);
@ -905,6 +953,7 @@ void bch_write_bdev_super(struct cached_dev *, struct closure *);
extern struct workqueue_struct *bcache_wq;
extern const char * const bch_cache_modes[];
extern const char * const bch_stop_on_failure_modes[];
extern struct mutex bch_register_lock;
extern struct list_head bch_cache_sets;

4
drivers/md/bcache/bset.c
View file

@ -1072,7 +1072,7 @@ EXPORT_SYMBOL(bch_btree_iter_init);
static inline struct bkey *__bch_btree_iter_next(struct btree_iter *iter,
btree_iter_cmp_fn *cmp)
{
struct btree_iter_set unused;
struct btree_iter_set b __maybe_unused;
struct bkey *ret = NULL;
if (!btree_iter_end(iter)) {
@ -1087,7 +1087,7 @@ static inline struct bkey *__bch_btree_iter_next(struct btree_iter *iter,
}
if (iter->data->k == iter->data->end)
heap_pop(iter, unused, cmp);
heap_pop(iter, b, cmp);
else
heap_sift(iter, 0, cmp);
}

5
drivers/md/bcache/bset.h
View file

@ -531,14 +531,15 @@ int __bch_keylist_realloc(struct keylist *, unsigned);
#ifdef CONFIG_BCACHE_DEBUG
int __bch_count_data(struct btree_keys *);
void __bch_check_keys(struct btree_keys *, const char *, ...);
void __printf(2, 3) __bch_check_keys(struct btree_keys *, const char *, ...);
void bch_dump_bset(struct btree_keys *, struct bset *, unsigned);
void bch_dump_bucket(struct btree_keys *);
#else
static inline int __bch_count_data(struct btree_keys *b) { return -1; }
static inline void __bch_check_keys(struct btree_keys *b, const char *fmt, ...) {}
static inline void __printf(2, 3)
__bch_check_keys(struct btree_keys *b, const char *fmt, ...) {}
static inline void bch_dump_bucket(struct btree_keys *b) {}
void bch_dump_bset(struct btree_keys *, struct bset *, unsigned);

26
drivers/md/bcache/btree.c
View file

@ -665,6 +665,7 @@ static unsigned long bch_mca_scan(struct shrinker *shrink,
struct btree *b, *t;
unsigned long i, nr = sc->nr_to_scan;
unsigned long freed = 0;
unsigned int btree_cache_used;
if (c->shrinker_disabled)
return SHRINK_STOP;
@ -689,9 +690,10 @@ static unsigned long bch_mca_scan(struct shrinker *shrink,
nr = min_t(unsigned long, nr, mca_can_free(c));
i = 0;
btree_cache_used = c->btree_cache_used;
list_for_each_entry_safe(b, t, &c->btree_cache_freeable, list) {
if (freed >= nr)
break;
if (nr <= 0)
goto out;
if (++i > 3 &&
!mca_reap(b, 0, false)) {
@ -699,9 +701,10 @@ static unsigned long bch_mca_scan(struct shrinker *shrink,
rw_unlock(true, b);
freed++;
}
nr--;
}
for (i = 0; (nr--) && i < c->btree_cache_used; i++) {
for (; (nr--) && i < btree_cache_used; i++) {
if (list_empty(&c->btree_cache))
goto out;
@ -719,7 +722,7 @@ static unsigned long bch_mca_scan(struct shrinker *shrink,
}
out:
mutex_unlock(&c->bucket_lock);
return freed;
return freed * c->btree_pages;
}
static unsigned long bch_mca_count(struct shrinker *shrink,
@ -959,7 +962,7 @@ static struct btree *mca_alloc(struct cache_set *c, struct btree_op *op,
return b;
}
/**
/*
* bch_btree_node_get - find a btree node in the cache and lock it, reading it
* in from disk if necessary.
*
@ -1744,6 +1747,7 @@ static void bch_btree_gc(struct cache_set *c)
btree_gc_start(c);
/* if CACHE_SET_IO_DISABLE set, gc thread should stop too */
do {
ret = btree_root(gc_root, c, &op, &writes, &stats);
closure_sync(&writes);
@ -1751,7 +1755,7 @@ static void bch_btree_gc(struct cache_set *c)
if (ret && ret != -EAGAIN)
pr_warn("gc failed!");
} while (ret);
} while (ret && !test_bit(CACHE_SET_IO_DISABLE, &c->flags));
bch_btree_gc_finish(c);
wake_up_allocators(c);
@ -1789,15 +1793,19 @@ static int bch_gc_thread(void *arg)
while (1) {
wait_event_interruptible(c->gc_wait,
kthread_should_stop() || gc_should_run(c));
kthread_should_stop() ||
test_bit(CACHE_SET_IO_DISABLE, &c->flags) ||
gc_should_run(c));
if (kthread_should_stop())
if (kthread_should_stop() ||
test_bit(CACHE_SET_IO_DISABLE, &c->flags))
break;
set_gc_sectors(c);
bch_btree_gc(c);
}
wait_for_kthread_stop();
return 0;
}
@ -2170,7 +2178,7 @@ int bch_btree_insert_check_key(struct btree *b, struct btree_op *op,
if (b->key.ptr[0] != btree_ptr ||
b->seq != seq + 1) {
op->lock = b->level;
op->lock = b->level;
goto out;
}
}

17
drivers/md/bcache/closure.c
View file

@ -46,7 +46,7 @@ void closure_sub(struct closure *cl, int v)
}
EXPORT_SYMBOL(closure_sub);
/**
/*
* closure_put - decrement a closure's refcount
*/
void closure_put(struct closure *cl)
@ -55,7 +55,7 @@ void closure_put(struct closure *cl)
}
EXPORT_SYMBOL(closure_put);
/**
/*
* closure_wake_up - wake up all closures on a wait list, without memory barrier
*/
void __closure_wake_up(struct closure_waitlist *wait_list)
@ -79,9 +79,9 @@ EXPORT_SYMBOL(__closure_wake_up);
/**
* closure_wait - add a closure to a waitlist
*
* @waitlist will own a ref on @cl, which will be released when
* @waitlist: will own a ref on @cl, which will be released when
* closure_wake_up() is called on @waitlist.
* @cl: closure pointer.
*
*/
bool closure_wait(struct closure_waitlist *waitlist, struct closure *cl)
@ -157,7 +157,7 @@ void closure_debug_destroy(struct closure *cl)
}
EXPORT_SYMBOL(closure_debug_destroy);
static struct dentry *debug;
static struct dentry *closure_debug;
static int debug_seq_show(struct seq_file *f, void *data)
{
@ -199,11 +199,12 @@ static const struct file_operations debug_ops = {
.release = single_release
};
void __init closure_debug_init(void)
int __init closure_debug_init(void)
{
debug = debugfs_create_file("closures", 0400, NULL, NULL, &debug_ops);
closure_debug = debugfs_create_file("closures",
0400, bcache_debug, NULL, &debug_ops);
return IS_ERR_OR_NULL(closure_debug);
}
#endif
MODULE_AUTHOR("Kent Overstreet <koverstreet@google.com>");

5
drivers/md/bcache/closure.h
View file

@ -105,6 +105,7 @@
struct closure;
struct closure_syncer;
typedef void (closure_fn) (struct closure *);
extern struct dentry *bcache_debug;
struct closure_waitlist {
struct llist_head list;
@ -185,13 +186,13 @@ static inline void closure_sync(struct closure *cl)
#ifdef CONFIG_BCACHE_CLOSURES_DEBUG
void closure_debug_init(void);
int closure_debug_init(void);
void closure_debug_create(struct closure *cl);
void closure_debug_destroy(struct closure *cl);
#else
static inline void closure_debug_init(void) {}
static inline int closure_debug_init(void) { return 0; }
static inline void closure_debug_create(struct closure *cl) {}
static inline void closure_debug_destroy(struct closure *cl) {}

14
drivers/md/bcache/debug.c
View file

@ -17,7 +17,7 @@
#include <linux/random.h>
#include <linux/seq_file.h>
static struct dentry *debug;
struct dentry *bcache_debug;
#ifdef CONFIG_BCACHE_DEBUG
@ -232,11 +232,11 @@ static const struct file_operations cache_set_debug_ops = {
void bch_debug_init_cache_set(struct cache_set *c)
{
if (!IS_ERR_OR_NULL(debug)) {
if (!IS_ERR_OR_NULL(bcache_debug)) {
char name[50];
snprintf(name, 50, "bcache-%pU", c->sb.set_uuid);
c->debug = debugfs_create_file(name, 0400, debug, c,
c->debug = debugfs_create_file(name, 0400, bcache_debug, c,
&cache_set_debug_ops);
}
}
@ -245,13 +245,13 @@ void bch_debug_init_cache_set(struct cache_set *c)
void bch_debug_exit(void)
{
if (!IS_ERR_OR_NULL(debug))
debugfs_remove_recursive(debug);
if (!IS_ERR_OR_NULL(bcache_debug))
debugfs_remove_recursive(bcache_debug);
}
int __init bch_debug_init(struct kobject *kobj)
{
debug = debugfs_create_dir("bcache", NULL);
bcache_debug = debugfs_create_dir("bcache", NULL);
return IS_ERR_OR_NULL(debug);
return IS_ERR_OR_NULL(bcache_debug);
}

2
drivers/md/bcache/extents.c
View file

@ -534,7 +534,6 @@ static bool bch_extent_bad_expensive(struct btree *b, const struct bkey *k,
static bool bch_extent_bad(struct btree_keys *bk, const struct bkey *k)
{
struct btree *b = container_of(bk, struct btree, keys);
struct bucket *g;
unsigned i, stale;
if (!KEY_PTRS(k) ||
@ -549,7 +548,6 @@ static bool bch_extent_bad(struct btree_keys *bk, const struct bkey *k)
return false;
for (i = 0; i < KEY_PTRS(k); i++) {
g = PTR_BUCKET(b->c, k, i);
stale = ptr_stale(b->c, k, i);
btree_bug_on(stale > 96, b,

16
drivers/md/bcache/io.c
View file

@ -38,7 +38,7 @@ void __bch_submit_bbio(struct bio *bio, struct cache_set *c)
bio_set_dev(bio, PTR_CACHE(c, &b->key, 0)->bdev);
b->submit_time_us = local_clock_us();
closure_bio_submit(bio, bio->bi_private);
closure_bio_submit(c, bio, bio->bi_private);
}
void bch_submit_bbio(struct bio *bio, struct cache_set *c,
@ -50,6 +50,20 @@ void bch_submit_bbio(struct bio *bio, struct cache_set *c,
}
/* IO errors */
void bch_count_backing_io_errors(struct cached_dev *dc, struct bio *bio)
{
char buf[BDEVNAME_SIZE];
unsigned errors;
WARN_ONCE(!dc, "NULL pointer of struct cached_dev");
errors = atomic_add_return(1, &dc->io_errors);
if (errors < dc->error_limit)
pr_err("%s: IO error on backing device, unrecoverable",
bio_devname(bio, buf));
else
bch_cached_dev_error(dc);
}
void bch_count_io_errors(struct cache *ca,
blk_status_t error,

8
drivers/md/bcache/journal.c
View file

@ -62,7 +62,7 @@ reread: left = ca->sb.bucket_size - offset;
bio_set_op_attrs(bio, REQ_OP_READ, 0);
bch_bio_map(bio, data);
closure_bio_submit(bio, &cl);
closure_bio_submit(ca->set, bio, &cl);
closure_sync(&cl);
/* This function could be simpler now since we no longer write
@ -493,7 +493,7 @@ static void journal_reclaim(struct cache_set *c)
struct cache *ca;
uint64_t last_seq;
unsigned iter, n = 0;
atomic_t p;
atomic_t p __maybe_unused;
atomic_long_inc(&c->reclaim);
@ -594,6 +594,7 @@ static void journal_write_done(struct closure *cl)
}
static void journal_write_unlock(struct closure *cl)
__releases(&c->journal.lock)
{
struct cache_set *c = container_of(cl, struct cache_set, journal.io);
@ -674,7 +675,7 @@ static void journal_write_unlocked(struct closure *cl)
spin_unlock(&c->journal.lock);
while ((bio = bio_list_pop(&list)))
closure_bio_submit(bio, cl);
closure_bio_submit(c, bio, cl);
continue_at(cl, journal_write_done, NULL);
}
@ -705,6 +706,7 @@ static void journal_try_write(struct cache_set *c)
static struct journal_write *journal_wait_for_write(struct cache_set *c,
unsigned nkeys)
__acquires(&c->journal.lock)
{
size_t sectors;
struct closure cl;

184
drivers/md/bcache/request.c
View file

@ -139,6 +139,7 @@ static void bch_data_invalidate(struct closure *cl)
}
op->insert_data_done = true;
/* get in bch_data_insert() */
bio_put(bio);
out:
continue_at(cl, bch_data_insert_keys, op->wq);
@ -295,6 +296,7 @@ static void bch_data_insert_start(struct closure *cl)
/**
* bch_data_insert - stick some data in the cache
* @cl: closure pointer.
*
* This is the starting point for any data to end up in a cache device; it could
* be from a normal write, or a writeback write, or a write to a flash only
@ -630,6 +632,41 @@ static void request_endio(struct bio *bio)
closure_put(cl);
}
static void backing_request_endio(struct bio *bio)
{
struct closure *cl = bio->bi_private;
if (bio->bi_status) {
struct search *s = container_of(cl, struct search, cl);
struct cached_dev *dc = container_of(s->d,
struct cached_dev, disk);
/*
* If a bio has REQ_PREFLUSH for writeback mode, it is
* speically assembled in cached_dev_write() for a non-zero
* write request which has REQ_PREFLUSH. we don't set
* s->iop.status by this failure, the status will be decided
* by result of bch_data_insert() operation.
*/
if (unlikely(s->iop.writeback &&
bio->bi_opf & REQ_PREFLUSH)) {
char buf[BDEVNAME_SIZE];
bio_devname(bio, buf);
pr_err("Can't flush %s: returned bi_status %i",
buf, bio->bi_status);
} else {
/* set to orig_bio->bi_status in bio_complete() */
s->iop.status = bio->bi_status;
}
s->recoverable = false;
/* should count I/O error for backing device here */
bch_count_backing_io_errors(dc, bio);
}
bio_put(bio);
closure_put(cl);
}
static void bio_complete(struct search *s)
{
if (s->orig_bio) {
@ -644,13 +681,21 @@ static void bio_complete(struct search *s)
}
}
static void do_bio_hook(struct search *s, struct bio *orig_bio)
static void do_bio_hook(struct search *s,
struct bio *orig_bio,
bio_end_io_t *end_io_fn)
{
struct bio *bio = &s->bio.bio;
bio_init(bio, NULL, 0);
__bio_clone_fast(bio, orig_bio);
bio->bi_end_io = request_endio;
/*
* bi_end_io can be set separately somewhere else, e.g. the
* variants in,
* - cache_bio->bi_end_io from cached_dev_cache_miss()
* - n->bi_end_io from cache_lookup_fn()
*/
bio->bi_end_io = end_io_fn;
bio->bi_private = &s->cl;
bio_cnt_set(bio, 3);
@ -676,7 +721,7 @@ static inline struct search *search_alloc(struct bio *bio,
s = mempool_alloc(d->c->search, GFP_NOIO);
closure_init(&s->cl, NULL);
do_bio_hook(s, bio);
do_bio_hook(s, bio, request_endio);
s->orig_bio = bio;
s->cache_miss = NULL;
@ -743,11 +788,12 @@ static void cached_dev_read_error(struct closure *cl)
trace_bcache_read_retry(s->orig_bio);
s->iop.status = 0;
do_bio_hook(s, s->orig_bio);
do_bio_hook(s, s->orig_bio, backing_request_endio);
/* XXX: invalidate cache */
closure_bio_submit(bio, cl);
/* I/O request sent to backing device */
closure_bio_submit(s->iop.c, bio, cl);
}
continue_at(cl, cached_dev_cache_miss_done, NULL);
@ -859,7 +905,7 @@ static int cached_dev_cache_miss(struct btree *b, struct search *s,
bio_copy_dev(cache_bio, miss);
cache_bio->bi_iter.bi_size = s->insert_bio_sectors << 9;
cache_bio->bi_end_io = request_endio;
cache_bio->bi_end_io = backing_request_endio;
cache_bio->bi_private = &s->cl;
bch_bio_map(cache_bio, NULL);
@ -872,15 +918,17 @@ static int cached_dev_cache_miss(struct btree *b, struct search *s,
s->cache_miss = miss;
s->iop.bio = cache_bio;
bio_get(cache_bio);
closure_bio_submit(cache_bio, &s->cl);
/* I/O request sent to backing device */
closure_bio_submit(s->iop.c, cache_bio, &s->cl);
return ret;
out_put:
bio_put(cache_bio);
out_submit:
miss->bi_end_io = request_endio;
miss->bi_end_io = backing_request_endio;
miss->bi_private = &s->cl;
closure_bio_submit(miss, &s->cl);
/* I/O request sent to backing device */
closure_bio_submit(s->iop.c, miss, &s->cl);
return ret;
}
@ -943,31 +991,46 @@ static void cached_dev_write(struct cached_dev *dc, struct search *s)
s->iop.bio = s->orig_bio;
bio_get(s->iop.bio);
if ((bio_op(bio) != REQ_OP_DISCARD) ||
blk_queue_discard(bdev_get_queue(dc->bdev)))
closure_bio_submit(bio, cl);
if (bio_op(bio) == REQ_OP_DISCARD &&
!blk_queue_discard(bdev_get_queue(dc->bdev)))
goto insert_data;
/* I/O request sent to backing device */
bio->bi_end_io = backing_request_endio;
closure_bio_submit(s->iop.c, bio, cl);
} else if (s->iop.writeback) {
bch_writeback_add(dc);
s->iop.bio = bio;
if (bio->bi_opf & REQ_PREFLUSH) {
/* Also need to send a flush to the backing device */
struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);
/*
* Also need to send a flush to the backing
* device.
*/
struct bio *flush;
flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);
if (!flush) {
s->iop.status = BLK_STS_RESOURCE;
goto insert_data;
}
bio_copy_dev(flush, bio);
flush->bi_end_io = request_endio;
flush->bi_end_io = backing_request_endio;
flush->bi_private = cl;
flush->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH;
closure_bio_submit(flush, cl);
/* I/O request sent to backing device */
closure_bio_submit(s->iop.c, flush, cl);
}
} else {
s->iop.bio = bio_clone_fast(bio, GFP_NOIO, dc->disk.bio_split);
closure_bio_submit(bio, cl);
/* I/O request sent to backing device */
bio->bi_end_io = backing_request_endio;
closure_bio_submit(s->iop.c, bio, cl);
}
insert_data:
closure_call(&s->iop.cl, bch_data_insert, NULL, cl);
continue_at(cl, cached_dev_write_complete, NULL);
}
@ -981,11 +1044,67 @@ static void cached_dev_nodata(struct closure *cl)
bch_journal_meta(s->iop.c, cl);
/* If it's a flush, we send the flush to the backing device too */
closure_bio_submit(bio, cl);
bio->bi_end_io = backing_request_endio;
closure_bio_submit(s->iop.c, bio, cl);
continue_at(cl, cached_dev_bio_complete, NULL);
}
struct detached_dev_io_private {
struct bcache_device *d;
unsigned long start_time;
bio_end_io_t *bi_end_io;
void *bi_private;
};
static void detached_dev_end_io(struct bio *bio)
{
struct detached_dev_io_private *ddip;
ddip = bio->bi_private;
bio->bi_end_io = ddip->bi_end_io;
bio->bi_private = ddip->bi_private;
generic_end_io_acct(ddip->d->disk->queue,
bio_data_dir(bio),
&ddip->d->disk->part0, ddip->start_time);
if (bio->bi_status) {
struct cached_dev *dc = container_of(ddip->d,
struct cached_dev, disk);
/* should count I/O error for backing device here */
bch_count_backing_io_errors(dc, bio);
}
kfree(ddip);
bio->bi_end_io(bio);
}
static void detached_dev_do_request(struct bcache_device *d, struct bio *bio)
{
struct detached_dev_io_private *ddip;
struct cached_dev *dc = container_of(d, struct cached_dev, disk);
/*
* no need to call closure_get(&dc->disk.cl),
* because upper layer had already opened bcache device,
* which would call closure_get(&dc->disk.cl)
*/
ddip = kzalloc(sizeof(struct detached_dev_io_private), GFP_NOIO);
ddip->d = d;
ddip->start_time = jiffies;
ddip->bi_end_io = bio->bi_end_io;
ddip->bi_private = bio->bi_private;
bio->bi_end_io = detached_dev_end_io;
bio->bi_private = ddip;
if ((bio_op(bio) == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(dc->bdev)))
bio->bi_end_io(bio);
else
generic_make_request(bio);
}
/* Cached devices - read & write stuff */
static blk_qc_t cached_dev_make_request(struct request_queue *q,
@ -996,6 +1115,13 @@ static blk_qc_t cached_dev_make_request(struct request_queue *q,
struct cached_dev *dc = container_of(d, struct cached_dev, disk);
int rw = bio_data_dir(bio);
if (unlikely((d->c && test_bit(CACHE_SET_IO_DISABLE, &d->c->flags)) ||
dc->io_disable)) {
bio->bi_status = BLK_STS_IOERR;
bio_endio(bio);
return BLK_QC_T_NONE;
}
atomic_set(&dc->backing_idle, 0);
generic_start_io_acct(q, rw, bio_sectors(bio), &d->disk->part0);
@ -1022,13 +1148,9 @@ static blk_qc_t cached_dev_make_request(struct request_queue *q,
else
cached_dev_read(dc, s);
}
} else {
if ((bio_op(bio) == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(dc->bdev)))
bio_endio(bio);
else
generic_make_request(bio);
}
} else
/* I/O request sent to backing device */
detached_dev_do_request(d, bio);
return BLK_QC_T_NONE;
}
@ -1112,6 +1234,12 @@ static blk_qc_t flash_dev_make_request(struct request_queue *q,
struct bcache_device *d = bio->bi_disk->private_data;
int rw = bio_data_dir(bio);
if (unlikely(d->c && test_bit(CACHE_SET_IO_DISABLE, &d->c->flags))) {
bio->bi_status = BLK_STS_IOERR;
bio_endio(bio);
return BLK_QC_T_NONE;
}
generic_start_io_acct(q, rw, bio_sectors(bio), &d->disk->part0);
s = search_alloc(bio, d);

160
drivers/md/bcache/super.c
View file

@ -47,6 +47,14 @@ const char * const bch_cache_modes[] = {
NULL
};
/* Default is -1; we skip past it for stop_when_cache_set_failed */
const char * const bch_stop_on_failure_modes[] = {
"default",
"auto",
"always",
NULL
};
static struct kobject *bcache_kobj;
struct mutex bch_register_lock;
LIST_HEAD(bch_cache_sets);
@ -265,6 +273,7 @@ void bch_write_bdev_super(struct cached_dev *dc, struct closure *parent)
bio->bi_private = dc;
closure_get(cl);
/* I/O request sent to backing device */
__write_super(&dc->sb, bio);
closure_return_with_destructor(cl, bch_write_bdev_super_unlock);
@ -521,7 +530,7 @@ static void prio_io(struct cache *ca, uint64_t bucket, int op,
bio_set_op_attrs(bio, op, REQ_SYNC|REQ_META|op_flags);
bch_bio_map(bio, ca->disk_buckets);
closure_bio_submit(bio, &ca->prio);
closure_bio_submit(ca->set, bio, &ca->prio);
closure_sync(cl);
}
@ -769,6 +778,8 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size,
sector_t sectors)
{
struct request_queue *q;
const size_t max_stripes = min_t(size_t, INT_MAX,
SIZE_MAX / sizeof(atomic_t));
size_t n;
int idx;
@ -777,9 +788,7 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size,
d->nr_stripes = DIV_ROUND_UP_ULL(sectors, d->stripe_size);
if (!d->nr_stripes ||
d->nr_stripes > INT_MAX ||
d->nr_stripes > SIZE_MAX / sizeof(atomic_t)) {
if (!d->nr_stripes || d->nr_stripes > max_stripes) {
pr_err("nr_stripes too large or invalid: %u (start sector beyond end of disk?)",
(unsigned)d->nr_stripes);
return -ENOMEM;
@ -833,9 +842,9 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size,
q->limits.io_min = block_size;
q->limits.logical_block_size = block_size;
q->limits.physical_block_size = block_size;
set_bit(QUEUE_FLAG_NONROT, &d->disk->queue->queue_flags);
clear_bit(QUEUE_FLAG_ADD_RANDOM, &d->disk->queue->queue_flags);
set_bit(QUEUE_FLAG_DISCARD, &d->disk->queue->queue_flags);
blk_queue_flag_set(QUEUE_FLAG_NONROT, d->disk->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, d->disk->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, d->disk->queue);
blk_queue_write_cache(q, true, true);
@ -899,6 +908,31 @@ void bch_cached_dev_run(struct cached_dev *dc)
pr_debug("error creating sysfs link");
}
/*
* If BCACHE_DEV_RATE_DW_RUNNING is set, it means routine of the delayed
* work dc->writeback_rate_update is running. Wait until the routine
* quits (BCACHE_DEV_RATE_DW_RUNNING is clear), then continue to
* cancel it. If BCACHE_DEV_RATE_DW_RUNNING is not clear after time_out
* seconds, give up waiting here and continue to cancel it too.
*/
static void cancel_writeback_rate_update_dwork(struct cached_dev *dc)
{
int time_out = WRITEBACK_RATE_UPDATE_SECS_MAX * HZ;
do {
if (!test_bit(BCACHE_DEV_RATE_DW_RUNNING,
&dc->disk.flags))
break;
time_out--;
schedule_timeout_interruptible(1);
} while (time_out > 0);
if (time_out == 0)
pr_warn("give up waiting for dc->writeback_write_update to quit");
cancel_delayed_work_sync(&dc->writeback_rate_update);
}
static void cached_dev_detach_finish(struct work_struct *w)
{
struct cached_dev *dc = container_of(w, struct cached_dev, detach);
@ -911,7 +945,9 @@ static void cached_dev_detach_finish(struct work_struct *w)
mutex_lock(&bch_register_lock);
cancel_delayed_work_sync(&dc->writeback_rate_update);
if (test_and_clear_bit(BCACHE_DEV_WB_RUNNING, &dc->disk.flags))
cancel_writeback_rate_update_dwork(dc);
if (!IS_ERR_OR_NULL(dc->writeback_thread)) {
kthread_stop(dc->writeback_thread);
dc->writeback_thread = NULL;
@ -954,6 +990,7 @@ void bch_cached_dev_detach(struct cached_dev *dc)
closure_get(&dc->disk.cl);
bch_writeback_queue(dc);
cached_dev_put(dc);
}
@ -1065,7 +1102,6 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
if (BDEV_STATE(&dc->sb) == BDEV_STATE_DIRTY) {
bch_sectors_dirty_init(&dc->disk);
atomic_set(&dc->has_dirty, 1);
refcount_inc(&dc->count);
bch_writeback_queue(dc);
}
@ -1093,14 +1129,16 @@ static void cached_dev_free(struct closure *cl)
{
struct cached_dev *dc = container_of(cl, struct cached_dev, disk.cl);
cancel_delayed_work_sync(&dc->writeback_rate_update);
mutex_lock(&bch_register_lock);
if (test_and_clear_bit(BCACHE_DEV_WB_RUNNING, &dc->disk.flags))
cancel_writeback_rate_update_dwork(dc);
if (!IS_ERR_OR_NULL(dc->writeback_thread))
kthread_stop(dc->writeback_thread);
if (dc->writeback_write_wq)
destroy_workqueue(dc->writeback_write_wq);
mutex_lock(&bch_register_lock);
if (atomic_read(&dc->running))
bd_unlink_disk_holder(dc->bdev, dc->disk.disk);
bcache_device_free(&dc->disk);
@ -1170,6 +1208,12 @@ static int cached_dev_init(struct cached_dev *dc, unsigned block_size)
max(dc->disk.disk->queue->backing_dev_info->ra_pages,
q->backing_dev_info->ra_pages);
atomic_set(&dc->io_errors, 0);
dc->io_disable = false;
dc->error_limit = DEFAULT_CACHED_DEV_ERROR_LIMIT;
/* default to auto */
dc->stop_when_cache_set_failed = BCH_CACHED_DEV_STOP_AUTO;
bch_cached_dev_request_init(dc);
bch_cached_dev_writeback_init(dc);
return 0;
@ -1321,6 +1365,24 @@ int bch_flash_dev_create(struct cache_set *c, uint64_t size)
return flash_dev_run(c, u);
}
bool bch_cached_dev_error(struct cached_dev *dc)
{
char name[BDEVNAME_SIZE];
if (!dc || test_bit(BCACHE_DEV_CLOSING, &dc->disk.flags))
return false;
dc->io_disable = true;
/* make others know io_disable is true earlier */
smp_mb();
pr_err("stop %s: too many IO errors on backing device %s\n",
dc->disk.disk->disk_name, bdevname(dc->bdev, name));
bcache_device_stop(&dc->disk);
return true;
}
/* Cache set */
__printf(2, 3)
@ -1332,6 +1394,9 @@ bool bch_cache_set_error(struct cache_set *c, const char *fmt, ...)
test_bit(CACHE_SET_STOPPING, &c->flags))
return false;
if (test_and_set_bit(CACHE_SET_IO_DISABLE, &c->flags))
pr_warn("CACHE_SET_IO_DISABLE already set");
/* XXX: we can be called from atomic context
acquire_console_sem();
*/
@ -1443,25 +1508,72 @@ static void cache_set_flush(struct closure *cl)
closure_return(cl);
}
/*
* This function is only called when CACHE_SET_IO_DISABLE is set, which means
* cache set is unregistering due to too many I/O errors. In this condition,
* the bcache device might be stopped, it depends on stop_when_cache_set_failed
* value and whether the broken cache has dirty data:
*
* dc->stop_when_cache_set_failed dc->has_dirty stop bcache device
* BCH_CACHED_STOP_AUTO 0 NO
* BCH_CACHED_STOP_AUTO 1 YES
* BCH_CACHED_DEV_STOP_ALWAYS 0 YES
* BCH_CACHED_DEV_STOP_ALWAYS 1 YES
*
* The expected behavior is, if stop_when_cache_set_failed is configured to
* "auto" via sysfs interface, the bcache device will not be stopped if the
* backing device is clean on the broken cache device.
*/
static void conditional_stop_bcache_device(struct cache_set *c,
struct bcache_device *d,
struct cached_dev *dc)
{
if (dc->stop_when_cache_set_failed == BCH_CACHED_DEV_STOP_ALWAYS) {
pr_warn("stop_when_cache_set_failed of %s is \"always\", stop it for failed cache set %pU.",
d->disk->disk_name, c->sb.set_uuid);
bcache_device_stop(d);
} else if (atomic_read(&dc->has_dirty)) {
/*
* dc->stop_when_cache_set_failed == BCH_CACHED_STOP_AUTO
* and dc->has_dirty == 1
*/
pr_warn("stop_when_cache_set_failed of %s is \"auto\" and cache is dirty, stop it to avoid potential data corruption.",
d->disk->disk_name);
bcache_device_stop(d);
} else {
/*
* dc->stop_when_cache_set_failed == BCH_CACHED_STOP_AUTO
* and dc->has_dirty == 0
*/
pr_warn("stop_when_cache_set_failed of %s is \"auto\" and cache is clean, keep it alive.",
d->disk->disk_name);
}
}
static void __cache_set_unregister(struct closure *cl)
{
struct cache_set *c = container_of(cl, struct cache_set, caching);
struct cached_dev *dc;
struct bcache_device *d;
size_t i;
mutex_lock(&bch_register_lock);
for (i = 0; i < c->devices_max_used; i++)
if (c->devices[i]) {
if (!UUID_FLASH_ONLY(&c->uuids[i]) &&
test_bit(CACHE_SET_UNREGISTERING, &c->flags)) {
dc = container_of(c->devices[i],
struct cached_dev, disk);
bch_cached_dev_detach(dc);
} else {
bcache_device_stop(c->devices[i]);
}
for (i = 0; i < c->devices_max_used; i++) {
d = c->devices[i];
if (!d)
continue;
if (!UUID_FLASH_ONLY(&c->uuids[i]) &&
test_bit(CACHE_SET_UNREGISTERING, &c->flags)) {
dc = container_of(d, struct cached_dev, disk);
bch_cached_dev_detach(dc);
if (test_bit(CACHE_SET_IO_DISABLE, &c->flags))
conditional_stop_bcache_device(c, d, dc);
} else {
bcache_device_stop(d);
}
}
mutex_unlock(&bch_register_lock);
@ -1567,6 +1679,7 @@ struct cache_set *bch_cache_set_alloc(struct cache_sb *sb)
c->congested_read_threshold_us = 2000;
c->congested_write_threshold_us = 20000;
c->error_limit = DEFAULT_IO_ERROR_LIMIT;
WARN_ON(test_and_clear_bit(CACHE_SET_IO_DISABLE, &c->flags));
return c;
err:
@ -2148,7 +2261,6 @@ static int __init bcache_init(void)
mutex_init(&bch_register_lock);
init_waitqueue_head(&unregister_wait);
register_reboot_notifier(&reboot);
closure_debug_init();
bcache_major = register_blkdev(0, "bcache");
if (bcache_major < 0) {
@ -2160,7 +2272,7 @@ static int __init bcache_init(void)
if (!(bcache_wq = alloc_workqueue("bcache", WQ_MEM_RECLAIM, 0)) ||
!(bcache_kobj = kobject_create_and_add("bcache", fs_kobj)) ||
bch_request_init() ||
bch_debug_init(bcache_kobj) ||
bch_debug_init(bcache_kobj) || closure_debug_init() ||
sysfs_create_files(bcache_kobj, files))
goto err;

55
drivers/md/bcache/sysfs.c
View file

@ -78,6 +78,7 @@ rw_attribute(congested_write_threshold_us);
rw_attribute(sequential_cutoff);
rw_attribute(data_csum);
rw_attribute(cache_mode);
rw_attribute(stop_when_cache_set_failed);
rw_attribute(writeback_metadata);
rw_attribute(writeback_running);
rw_attribute(writeback_percent);
@ -95,6 +96,7 @@ read_attribute(partial_stripes_expensive);
rw_attribute(synchronous);
rw_attribute(journal_delay_ms);
rw_attribute(io_disable);
rw_attribute(discard);
rw_attribute(running);
rw_attribute(label);
@ -125,6 +127,12 @@ SHOW(__bch_cached_dev)
bch_cache_modes + 1,
BDEV_CACHE_MODE(&dc->sb));
if (attr == &sysfs_stop_when_cache_set_failed)
return bch_snprint_string_list(buf, PAGE_SIZE,
bch_stop_on_failure_modes + 1,
dc->stop_when_cache_set_failed);
sysfs_printf(data_csum, "%i", dc->disk.data_csum);
var_printf(verify, "%i");
var_printf(bypass_torture_test, "%i");
@ -133,7 +141,9 @@ SHOW(__bch_cached_dev)
var_print(writeback_delay);
var_print(writeback_percent);
sysfs_hprint(writeback_rate, dc->writeback_rate.rate << 9);
sysfs_hprint(io_errors, atomic_read(&dc->io_errors));
sysfs_printf(io_error_limit, "%i", dc->error_limit);
sysfs_printf(io_disable, "%i", dc->io_disable);
var_print(writeback_rate_update_seconds);
var_print(writeback_rate_i_term_inverse);
var_print(writeback_rate_p_term_inverse);
@ -173,7 +183,7 @@ SHOW(__bch_cached_dev)
sysfs_hprint(dirty_data,
bcache_dev_sectors_dirty(&dc->disk) << 9);
sysfs_hprint(stripe_size, dc->disk.stripe_size << 9);
sysfs_hprint(stripe_size, ((uint64_t)dc->disk.stripe_size) << 9);
var_printf(partial_stripes_expensive, "%u");
var_hprint(sequential_cutoff);
@ -224,6 +234,14 @@ STORE(__cached_dev)
d_strtoul(writeback_rate_i_term_inverse);
d_strtoul_nonzero(writeback_rate_p_term_inverse);
sysfs_strtoul_clamp(io_error_limit, dc->error_limit, 0, INT_MAX);
if (attr == &sysfs_io_disable) {
int v = strtoul_or_return(buf);
dc->io_disable = v ? 1 : 0;
}
d_strtoi_h(sequential_cutoff);
d_strtoi_h(readahead);
@ -246,6 +264,15 @@ STORE(__cached_dev)
}
}
if (attr == &sysfs_stop_when_cache_set_failed) {
v = bch_read_string_list(buf, bch_stop_on_failure_modes + 1);
if (v < 0)
return v;
dc->stop_when_cache_set_failed = v;
}
if (attr == &sysfs_label) {
if (size > SB_LABEL_SIZE)
return -EINVAL;
@ -309,7 +336,8 @@ STORE(bch_cached_dev)
bch_writeback_queue(dc);
if (attr == &sysfs_writeback_percent)
schedule_delayed_work(&dc->writeback_rate_update,
if (!test_and_set_bit(BCACHE_DEV_WB_RUNNING, &dc->disk.flags))
schedule_delayed_work(&dc->writeback_rate_update,
dc->writeback_rate_update_seconds * HZ);
mutex_unlock(&bch_register_lock);
@ -324,6 +352,7 @@ static struct attribute *bch_cached_dev_files[] = {
&sysfs_data_csum,
#endif
&sysfs_cache_mode,
&sysfs_stop_when_cache_set_failed,
&sysfs_writeback_metadata,
&sysfs_writeback_running,
&sysfs_writeback_delay,
@ -333,6 +362,9 @@ static struct attribute *bch_cached_dev_files[] = {
&sysfs_writeback_rate_i_term_inverse,
&sysfs_writeback_rate_p_term_inverse,
&sysfs_writeback_rate_debug,
&sysfs_errors,
&sysfs_io_error_limit,
&sysfs_io_disable,
&sysfs_dirty_data,
&sysfs_stripe_size,
&sysfs_partial_stripes_expensive,
@ -590,6 +622,8 @@ SHOW(__bch_cache_set)
sysfs_printf(gc_always_rewrite, "%i", c->gc_always_rewrite);
sysfs_printf(btree_shrinker_disabled, "%i", c->shrinker_disabled);
sysfs_printf(copy_gc_enabled, "%i", c->copy_gc_enabled);
sysfs_printf(io_disable, "%i",
test_bit(CACHE_SET_IO_DISABLE, &c->flags));
if (attr == &sysfs_bset_tree_stats)
return bch_bset_print_stats(c, buf);
@ -679,6 +713,20 @@ STORE(__bch_cache_set)
if (attr == &sysfs_io_error_halflife)
c->error_decay = strtoul_or_return(buf) / 88;
if (attr == &sysfs_io_disable) {
int v = strtoul_or_return(buf);
if (v) {
if (test_and_set_bit(CACHE_SET_IO_DISABLE,
&c->flags))
pr_warn("CACHE_SET_IO_DISABLE already set");
} else {
if (!test_and_clear_bit(CACHE_SET_IO_DISABLE,
&c->flags))
pr_warn("CACHE_SET_IO_DISABLE already cleared");
}
}
sysfs_strtoul(journal_delay_ms, c->journal_delay_ms);
sysfs_strtoul(verify, c->verify);
sysfs_strtoul(key_merging_disabled, c->key_merging_disabled);
@ -764,6 +812,7 @@ static struct attribute *bch_cache_set_internal_files[] = {
&sysfs_gc_always_rewrite,
&sysfs_btree_shrinker_disabled,
&sysfs_copy_gc_enabled,
&sysfs_io_disable,
NULL
};
KTYPE(bch_cache_set_internal);

25
drivers/md/bcache/util.c
View file

@ -32,20 +32,27 @@ int bch_ ## name ## _h(const char *cp, type *res) \
case 'y': \
case 'z': \
u++; \
/* fall through */ \
case 'e': \
u++; \
/* fall through */ \
case 'p': \
u++; \
/* fall through */ \
case 't': \
u++; \
/* fall through */ \
case 'g': \
u++; \
/* fall through */ \
case 'm': \
u++; \
/* fall through */ \
case 'k': \
u++; \
if (e++ == cp) \
return -EINVAL; \
/* fall through */ \
case '\n': \
case '\0': \
if (*e == '\n') \
@ -75,10 +82,9 @@ STRTO_H(strtoll, long long)
STRTO_H(strtoull, unsigned long long)
/**
* bch_hprint() - formats @v to human readable string for sysfs.
*
* @v - signed 64 bit integer
* @buf - the (at least 8 byte) buffer to format the result into.
* bch_hprint - formats @v to human readable string for sysfs.
* @buf: the (at least 8 byte) buffer to format the result into.
* @v: signed 64 bit integer
*
* Returns the number of bytes used by format.
*/
@ -218,13 +224,12 @@ void bch_time_stats_update(struct time_stats *stats, uint64_t start_time)
}
/**
* bch_next_delay() - increment @d by the amount of work done, and return how
* long to delay until the next time to do some work.
* bch_next_delay() - update ratelimiting statistics and calculate next delay
* @d: the struct bch_ratelimit to update
* @done: the amount of work done, in arbitrary units
*
* @d - the struct bch_ratelimit to update
* @done - the amount of work done, in arbitrary units
*
* Returns the amount of time to delay by, in jiffies
* Increment @d by the amount of work done, and return how long to delay in
* jiffies until the next time to do some work.
*/
uint64_t bch_next_delay(struct bch_ratelimit *d, uint64_t done)
{

6
drivers/md/bcache/util.h
View file

@ -567,12 +567,6 @@ static inline sector_t bdev_sectors(struct block_device *bdev)
return bdev->bd_inode->i_size >> 9;
}
#define closure_bio_submit(bio, cl) \
do { \
closure_get(cl); \
generic_make_request(bio); \
} while (0)
uint64_t bch_crc64_update(uint64_t, const void *, size_t);
uint64_t bch_crc64(const void *, size_t);

92
drivers/md/bcache/writeback.c
View file

@ -114,6 +114,27 @@ static void update_writeback_rate(struct work_struct *work)
struct cached_dev *dc = container_of(to_delayed_work(work),
struct cached_dev,
writeback_rate_update);
struct cache_set *c = dc->disk.c;
/*
* should check BCACHE_DEV_RATE_DW_RUNNING before calling
* cancel_delayed_work_sync().
*/
set_bit(BCACHE_DEV_RATE_DW_RUNNING, &dc->disk.flags);
/* paired with where BCACHE_DEV_RATE_DW_RUNNING is tested */
smp_mb();
/*
* CACHE_SET_IO_DISABLE might be set via sysfs interface,
* check it here too.
*/
if (!test_bit(BCACHE_DEV_WB_RUNNING, &dc->disk.flags) ||
test_bit(CACHE_SET_IO_DISABLE, &c->flags)) {
clear_bit(BCACHE_DEV_RATE_DW_RUNNING, &dc->disk.flags);
/* paired with where BCACHE_DEV_RATE_DW_RUNNING is tested */
smp_mb();
return;
}
down_read(&dc->writeback_lock);
@ -123,8 +144,23 @@ static void update_writeback_rate(struct work_struct *work)
up_read(&dc->writeback_lock);
schedule_delayed_work(&dc->writeback_rate_update,
/*
* CACHE_SET_IO_DISABLE might be set via sysfs interface,
* check it here too.
*/
if (test_bit(BCACHE_DEV_WB_RUNNING, &dc->disk.flags) &&
!test_bit(CACHE_SET_IO_DISABLE, &c->flags)) {
schedule_delayed_work(&dc->writeback_rate_update,
dc->writeback_rate_update_seconds * HZ);
}
/*
* should check BCACHE_DEV_RATE_DW_RUNNING before calling
* cancel_delayed_work_sync().
*/
clear_bit(BCACHE_DEV_RATE_DW_RUNNING, &dc->disk.flags);
/* paired with where BCACHE_DEV_RATE_DW_RUNNING is tested */
smp_mb();
}
static unsigned writeback_delay(struct cached_dev *dc, unsigned sectors)
@ -253,7 +289,8 @@ static void write_dirty(struct closure *cl)
bio_set_dev(&io->bio, io->dc->bdev);
io->bio.bi_end_io = dirty_endio;
closure_bio_submit(&io->bio, cl);
/* I/O request sent to backing device */
closure_bio_submit(io->dc->disk.c, &io->bio, cl);
}
atomic_set(&dc->writeback_sequence_next, next_sequence);
@ -279,7 +316,7 @@ static void read_dirty_submit(struct closure *cl)
{
struct dirty_io *io = container_of(cl, struct dirty_io, cl);
closure_bio_submit(&io->bio, cl);
closure_bio_submit(io->dc->disk.c, &io->bio, cl);
continue_at(cl, write_dirty, io->dc->writeback_write_wq);
}
@ -305,7 +342,9 @@ static void read_dirty(struct cached_dev *dc)
next = bch_keybuf_next(&dc->writeback_keys);
while (!kthread_should_stop() && next) {
while (!kthread_should_stop() &&
!test_bit(CACHE_SET_IO_DISABLE, &dc->disk.c->flags) &&
next) {
size = 0;
nk = 0;
@ -402,7 +441,9 @@ static void read_dirty(struct cached_dev *dc)
}
}
while (!kthread_should_stop() && delay) {
while (!kthread_should_stop() &&
!test_bit(CACHE_SET_IO_DISABLE, &dc->disk.c->flags) &&
delay) {
schedule_timeout_interruptible(delay);
delay = writeback_delay(dc, 0);
}
@ -558,21 +599,30 @@ static bool refill_dirty(struct cached_dev *dc)
static int bch_writeback_thread(void *arg)
{
struct cached_dev *dc = arg;
struct cache_set *c = dc->disk.c;
bool searched_full_index;
bch_ratelimit_reset(&dc->writeback_rate);
while (!kthread_should_stop()) {
while (!kthread_should_stop() &&
!test_bit(CACHE_SET_IO_DISABLE, &c->flags)) {
down_write(&dc->writeback_lock);
set_current_state(TASK_INTERRUPTIBLE);
if (!atomic_read(&dc->has_dirty) ||
(!test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) &&
!dc->writeback_running)) {
/*
* If the bache device is detaching, skip here and continue
* to perform writeback. Otherwise, if no dirty data on cache,
* or there is dirty data on cache but writeback is disabled,
* the writeback thread should sleep here and wait for others
* to wake up it.
*/
if (!test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) &&
(!atomic_read(&dc->has_dirty) || !dc->writeback_running)) {
up_write(&dc->writeback_lock);
if (kthread_should_stop()) {
if (kthread_should_stop() ||
test_bit(CACHE_SET_IO_DISABLE, &c->flags)) {
set_current_state(TASK_RUNNING);
return 0;
break;
}
schedule();
@ -585,9 +635,16 @@ static int bch_writeback_thread(void *arg)
if (searched_full_index &&
RB_EMPTY_ROOT(&dc->writeback_keys.keys)) {
atomic_set(&dc->has_dirty, 0);
cached_dev_put(dc);
SET_BDEV_STATE(&dc->sb, BDEV_STATE_CLEAN);
bch_write_bdev_super(dc, NULL);
/*
* If bcache device is detaching via sysfs interface,
* writeback thread should stop after there is no dirty
* data on cache. BCACHE_DEV_DETACHING flag is set in
* bch_cached_dev_detach().
*/
if (test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags))
break;
}
up_write(&dc->writeback_lock);
@ -599,6 +656,7 @@ static int bch_writeback_thread(void *arg)
while (delay &&
!kthread_should_stop() &&
!test_bit(CACHE_SET_IO_DISABLE, &c->flags) &&
!test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags))
delay = schedule_timeout_interruptible(delay);
@ -606,6 +664,9 @@ static int bch_writeback_thread(void *arg)
}
}
cached_dev_put(dc);
wait_for_kthread_stop();
return 0;
}
@ -659,6 +720,7 @@ void bch_cached_dev_writeback_init(struct cached_dev *dc)
dc->writeback_rate_p_term_inverse = 40;
dc->writeback_rate_i_term_inverse = 10000;
WARN_ON(test_and_clear_bit(BCACHE_DEV_WB_RUNNING, &dc->disk.flags));
INIT_DELAYED_WORK(&dc->writeback_rate_update, update_writeback_rate);
}
@ -669,11 +731,15 @@ int bch_cached_dev_writeback_start(struct cached_dev *dc)
if (!dc->writeback_write_wq)
return -ENOMEM;
cached_dev_get(dc);
dc->writeback_thread = kthread_create(bch_writeback_thread, dc,
"bcache_writeback");
if (IS_ERR(dc->writeback_thread))
if (IS_ERR(dc->writeback_thread)) {
cached_dev_put(dc);
return PTR_ERR(dc->writeback_thread);
}
WARN_ON(test_and_set_bit(BCACHE_DEV_WB_RUNNING, &dc->disk.flags));
schedule_delayed_work(&dc->writeback_rate_update,
dc->writeback_rate_update_seconds * HZ);

4
drivers/md/bcache/writeback.h
View file

@ -39,7 +39,7 @@ static inline uint64_t bcache_flash_devs_sectors_dirty(struct cache_set *c)
if (!d || !UUID_FLASH_ONLY(&c->uuids[i]))
continue;
ret += bcache_dev_sectors_dirty(d);
ret += bcache_dev_sectors_dirty(d);
}
mutex_unlock(&bch_register_lock);
@ -105,8 +105,6 @@ static inline void bch_writeback_add(struct cached_dev *dc)
{
if (!atomic_read(&dc->has_dirty) &&
!atomic_xchg(&dc->has_dirty, 1)) {
refcount_inc(&dc->count);
if (BDEV_STATE(&dc->sb) != BDEV_STATE_DIRTY) {
SET_BDEV_STATE(&dc->sb, BDEV_STATE_DIRTY);
/* XXX: should do this synchronously */

16
drivers/md/dm-table.c
View file

@ -1857,7 +1857,7 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
q->limits = *limits;
if (!dm_table_supports_discards(t)) {
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, q);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
/* Must also clear discard limits... */
q->limits.max_discard_sectors = 0;
q->limits.max_hw_discard_sectors = 0;
@ -1865,7 +1865,7 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
q->limits.discard_alignment = 0;
q->limits.discard_misaligned = 0;
} else
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
if (dm_table_supports_flush(t, (1UL << QUEUE_FLAG_WC))) {
wc = true;
@ -1875,15 +1875,15 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
blk_queue_write_cache(q, wc, fua);
if (dm_table_supports_dax(t))
queue_flag_set_unlocked(QUEUE_FLAG_DAX, q);
blk_queue_flag_set(QUEUE_FLAG_DAX, q);
if (dm_table_supports_dax_write_cache(t))
dax_write_cache(t->md->dax_dev, true);
/* Ensure that all underlying devices are non-rotational. */
if (dm_table_all_devices_attribute(t, device_is_nonrot))
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
else
queue_flag_clear_unlocked(QUEUE_FLAG_NONROT, q);
blk_queue_flag_clear(QUEUE_FLAG_NONROT, q);
if (!dm_table_supports_write_same(t))
q->limits.max_write_same_sectors = 0;
@ -1891,9 +1891,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
q->limits.max_write_zeroes_sectors = 0;
if (dm_table_all_devices_attribute(t, queue_supports_sg_merge))
queue_flag_clear_unlocked(QUEUE_FLAG_NO_SG_MERGE, q);
blk_queue_flag_clear(QUEUE_FLAG_NO_SG_MERGE, q);
else
queue_flag_set_unlocked(QUEUE_FLAG_NO_SG_MERGE, q);
blk_queue_flag_set(QUEUE_FLAG_NO_SG_MERGE, q);
dm_table_verify_integrity(t);
@ -1904,7 +1904,7 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
* have it set.
*/
if (blk_queue_add_random(q) && dm_table_all_devices_attribute(t, device_is_not_random))
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, q);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q);
}
unsigned int dm_table_get_num_targets(struct dm_table *t)

2
drivers/md/dm.c
View file

@ -1848,7 +1848,7 @@ static struct mapped_device *alloc_dev(int minor)
INIT_LIST_HEAD(&md->table_devices);
spin_lock_init(&md->uevent_lock);
md->queue = blk_alloc_queue_node(GFP_KERNEL, numa_node_id);
md->queue = blk_alloc_queue_node(GFP_KERNEL, numa_node_id, NULL);
if (!md->queue)
goto bad;
md->queue->queuedata = md;

4
drivers/md/md-linear.c
View file

@ -138,9 +138,9 @@ static struct linear_conf *linear_conf(struct mddev *mddev, int raid_disks)
}
if (!discard_supported)
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, mddev->queue);
else
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, mddev->queue);
/*
* Here we calculate the device offsets.

10
drivers/md/md.c
View file

@ -5206,12 +5206,12 @@ static void md_free(struct kobject *ko)
if (mddev->sysfs_state)
sysfs_put(mddev->sysfs_state);
if (mddev->gendisk)
del_gendisk(mddev->gendisk);
if (mddev->queue)
blk_cleanup_queue(mddev->queue);
if (mddev->gendisk) {
del_gendisk(mddev->gendisk);
if (mddev->gendisk)
put_disk(mddev->gendisk);
}
percpu_ref_exit(&mddev->writes_pending);
kfree(mddev);
@ -5619,9 +5619,9 @@ int md_run(struct mddev *mddev)
if (mddev->degraded)
nonrot = false;
if (nonrot)
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mddev->queue);
blk_queue_flag_set(QUEUE_FLAG_NONROT, mddev->queue);
else
queue_flag_clear_unlocked(QUEUE_FLAG_NONROT, mddev->queue);
blk_queue_flag_clear(QUEUE_FLAG_NONROT, mddev->queue);
mddev->queue->backing_dev_info->congested_data = mddev;
mddev->queue->backing_dev_info->congested_fn = md_congested;
}

4
drivers/md/raid0.c
View file

@ -399,9 +399,9 @@ static int raid0_run(struct mddev *mddev)
discard_supported = true;
}
if (!discard_supported)
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, mddev->queue);
else
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, mddev->queue);
}
/* calculate array device size */

6
drivers/md/raid1.c
View file

@ -1760,7 +1760,7 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev)
}
}
if (mddev->queue && blk_queue_discard(bdev_get_queue(rdev->bdev)))
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, mddev->queue);
print_conf(conf);
return err;
}
@ -3110,10 +3110,10 @@ static int raid1_run(struct mddev *mddev)
if (mddev->queue) {
if (discard_supported)
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD,
blk_queue_flag_set(QUEUE_FLAG_DISCARD,
mddev->queue);
else
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD,
blk_queue_flag_clear(QUEUE_FLAG_DISCARD,
mddev->queue);
}

6
drivers/md/raid10.c
View file

@ -1845,7 +1845,7 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev)
break;
}
if (mddev->queue && blk_queue_discard(bdev_get_queue(rdev->bdev)))
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, mddev->queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, mddev->queue);
print_conf(conf);
return err;
@ -3846,10 +3846,10 @@ static int raid10_run(struct mddev *mddev)
if (mddev->queue) {
if (discard_supported)
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD,
blk_queue_flag_set(QUEUE_FLAG_DISCARD,
mddev->queue);
else
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD,
blk_queue_flag_clear(QUEUE_FLAG_DISCARD,
mddev->queue);
}
/* need to check that every block has at least one working mirror */

4
drivers/md/raid5.c
View file

@ -7443,10 +7443,10 @@ static int raid5_run(struct mddev *mddev)
if (devices_handle_discard_safely &&
mddev->queue->limits.max_discard_sectors >= (stripe >> 9) &&
mddev->queue->limits.discard_granularity >= stripe)
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD,
blk_queue_flag_set(QUEUE_FLAG_DISCARD,
mddev->queue);
else
queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD,
blk_queue_flag_clear(QUEUE_FLAG_DISCARD,
mddev->queue);
blk_queue_max_hw_sectors(mddev->queue, UINT_MAX);

4
drivers/misc/cardreader/rtsx_pcr.c
View file

@ -444,12 +444,12 @@ static void rtsx_pci_add_sg_tbl(struct rtsx_pcr *pcr,
{
u64 *ptr = (u64 *)(pcr->host_sg_tbl_ptr) + pcr->sgi;
u64 val;
u8 option = SG_VALID | SG_TRANS_DATA;
u8 option = RTSX_SG_VALID | RTSX_SG_TRANS_DATA;
pcr_dbg(pcr, "DMA addr: 0x%x, Len: 0x%x\n", (unsigned int)addr, len);
if (end)
option |= SG_END;
option |= RTSX_SG_END;
val = ((u64)addr << 32) | ((u64)len << 12) | option;
put_unaligned_le64(val, ptr);

2
drivers/mmc/core/block.c
View file

@ -2659,7 +2659,6 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md)
* from being accepted.
*/
card = md->queue.card;
mmc_cleanup_queue(&md->queue);
if (md->disk->flags & GENHD_FL_UP) {
device_remove_file(disk_to_dev(md->disk), &md->force_ro);
if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) &&
@ -2669,6 +2668,7 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md)
del_gendisk(md->disk);
}
mmc_cleanup_queue(&md->queue);
mmc_blk_put(md);
}
}

8
drivers/mmc/core/queue.c
View file

@ -185,14 +185,14 @@ static void mmc_queue_setup_discard(struct request_queue *q,
if (!max_discard)
return;
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
blk_queue_max_discard_sectors(q, max_discard);
q->limits.discard_granularity = card->pref_erase << 9;
/* granularity must not be greater than max. discard */
if (card->pref_erase > max_discard)
q->limits.discard_granularity = 0;
if (mmc_can_secure_erase_trim(card))
queue_flag_set_unlocked(QUEUE_FLAG_SECERASE, q);
blk_queue_flag_set(QUEUE_FLAG_SECERASE, q);
}
/**
@ -356,8 +356,8 @@ static void mmc_setup_queue(struct mmc_queue *mq, struct mmc_card *card)
if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
limit = (u64)dma_max_pfn(mmc_dev(host)) << PAGE_SHIFT;
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mq->queue);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, mq->queue);
blk_queue_flag_set(QUEUE_FLAG_NONROT, mq->queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, mq->queue);
if (mmc_can_erase(card))
mmc_queue_setup_discard(mq->queue, card);

6
drivers/mtd/mtd_blkdevs.c
View file

@ -419,11 +419,11 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
blk_queue_logical_block_size(new->rq, tr->blksize);
blk_queue_bounce_limit(new->rq, BLK_BOUNCE_HIGH);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, new->rq);
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, new->rq);
blk_queue_flag_set(QUEUE_FLAG_NONROT, new->rq);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, new->rq);
if (tr->discard) {
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, new->rq);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, new->rq);
blk_queue_max_discard_sectors(new->rq, UINT_MAX);
}

2
drivers/nvdimm/blk.c
View file

@ -266,7 +266,7 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk)
blk_queue_make_request(q, nd_blk_make_request);
blk_queue_max_hw_sectors(q, UINT_MAX);
blk_queue_logical_block_size(q, nsblk_sector_size(nsblk));
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
q->queuedata = nsblk;
disk = alloc_disk(0);

2
drivers/nvdimm/btt.c
View file

@ -1542,7 +1542,7 @@ static int btt_blk_init(struct btt *btt)
blk_queue_make_request(btt->btt_queue, btt_make_request);
blk_queue_logical_block_size(btt->btt_queue, btt->sector_size);
blk_queue_max_hw_sectors(btt->btt_queue, UINT_MAX);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, btt->btt_queue);
blk_queue_flag_set(QUEUE_FLAG_NONROT, btt->btt_queue);
btt->btt_queue->queuedata = btt;
if (btt_meta_size(btt)) {

1
drivers/nvdimm/nd.h
View file

@ -29,7 +29,6 @@ enum {
* BTT instance
*/
ND_MAX_LANES = 256,
SECTOR_SHIFT = 9,
INT_LBASIZE_ALIGNMENT = 64,
NVDIMM_IO_ATOMIC = 1,
};

6
drivers/nvdimm/pmem.c
View file

@ -343,7 +343,7 @@ static int pmem_attach_disk(struct device *dev,
return -EBUSY;
}
q = blk_alloc_queue_node(GFP_KERNEL, dev_to_node(dev));
q = blk_alloc_queue_node(GFP_KERNEL, dev_to_node(dev), NULL);
if (!q)
return -ENOMEM;
@ -387,8 +387,8 @@ static int pmem_attach_disk(struct device *dev,
blk_queue_physical_block_size(q, PAGE_SIZE);
blk_queue_logical_block_size(q, pmem_sector_size(ndns));
blk_queue_max_hw_sectors(q, UINT_MAX);
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
queue_flag_set_unlocked(QUEUE_FLAG_DAX, q);
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
blk_queue_flag_set(QUEUE_FLAG_DAX, q);
q->queuedata = pmem;
disk = alloc_disk_node(0, nid);

1
drivers/nvme/host/Makefile
View file

@ -12,6 +12,7 @@ nvme-core-y := core.o
nvme-core-$(CONFIG_TRACING) += trace.o
nvme-core-$(CONFIG_NVME_MULTIPATH) += multipath.o
nvme-core-$(CONFIG_NVM) += lightnvm.o
nvme-core-$(CONFIG_FAULT_INJECTION_DEBUG_FS) += fault_inject.o
nvme-y += pci.o

127
drivers/nvme/host/core.c
View file

@ -100,11 +100,6 @@ static struct class *nvme_subsys_class;
static void nvme_ns_remove(struct nvme_ns *ns);
static int nvme_revalidate_disk(struct gendisk *disk);
static __le32 nvme_get_log_dw10(u8 lid, size_t size)
{
return cpu_to_le32((((size / 4) - 1) << 16) | lid);
}
int nvme_reset_ctrl(struct nvme_ctrl *ctrl)
{
if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_RESETTING))
@ -135,6 +130,9 @@ static void nvme_delete_ctrl_work(struct work_struct *work)
struct nvme_ctrl *ctrl =
container_of(work, struct nvme_ctrl, delete_work);
dev_info(ctrl->device,
"Removing ctrl: NQN \"%s\"\n", ctrl->opts->subsysnqn);
flush_work(&ctrl->reset_work);
nvme_stop_ctrl(ctrl);
nvme_remove_namespaces(ctrl);
@ -948,7 +946,8 @@ static int nvme_identify_ns_list(struct nvme_ctrl *dev, unsigned nsid, __le32 *n
c.identify.opcode = nvme_admin_identify;
c.identify.cns = NVME_ID_CNS_NS_ACTIVE_LIST;
c.identify.nsid = cpu_to_le32(nsid);
return nvme_submit_sync_cmd(dev->admin_q, &c, ns_list, 0x1000);
return nvme_submit_sync_cmd(dev->admin_q, &c, ns_list,
NVME_IDENTIFY_DATA_SIZE);
}
static struct nvme_id_ns *nvme_identify_ns(struct nvme_ctrl *ctrl,
@ -1124,13 +1123,13 @@ static void nvme_update_formats(struct nvme_ctrl *ctrl)
struct nvme_ns *ns, *next;
LIST_HEAD(rm_list);
mutex_lock(&ctrl->namespaces_mutex);
down_write(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list) {
if (ns->disk && nvme_revalidate_disk(ns->disk)) {
list_move_tail(&ns->list, &rm_list);
}
}
mutex_unlock(&ctrl->namespaces_mutex);
up_write(&ctrl->namespaces_rwsem);
list_for_each_entry_safe(ns, next, &rm_list, list)
nvme_ns_remove(ns);
@ -1358,7 +1357,7 @@ static void nvme_config_discard(struct nvme_ctrl *ctrl,
blk_queue_max_discard_sectors(queue, UINT_MAX);
blk_queue_max_discard_segments(queue, NVME_DSM_MAX_RANGES);
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, queue);
if (ctrl->quirks & NVME_QUIRK_DEALLOCATE_ZEROES)
blk_queue_max_write_zeroes_sectors(queue, UINT_MAX);
@ -1449,6 +1448,8 @@ static void __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
if (ns->noiob)
nvme_set_chunk_size(ns);
nvme_update_disk_info(disk, ns, id);
if (ns->ndev)
nvme_nvm_update_nvm_info(ns);
#ifdef CONFIG_NVME_MULTIPATH
if (ns->head->disk)
nvme_update_disk_info(ns->head->disk, ns, id);
@ -2217,16 +2218,33 @@ static int nvme_init_subsystem(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
return ret;
}
int nvme_get_log_ext(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
u8 log_page, void *log,
size_t size, size_t offset)
{
struct nvme_command c = { };
unsigned long dwlen = size / 4 - 1;
c.get_log_page.opcode = nvme_admin_get_log_page;
if (ns)
c.get_log_page.nsid = cpu_to_le32(ns->head->ns_id);
else
c.get_log_page.nsid = cpu_to_le32(NVME_NSID_ALL);
c.get_log_page.lid = log_page;
c.get_log_page.numdl = cpu_to_le16(dwlen & ((1 << 16) - 1));
c.get_log_page.numdu = cpu_to_le16(dwlen >> 16);
c.get_log_page.lpol = cpu_to_le32(offset & ((1ULL << 32) - 1));
c.get_log_page.lpou = cpu_to_le32(offset >> 32ULL);
return nvme_submit_sync_cmd(ctrl->admin_q, &c, log, size);
}
static int nvme_get_log(struct nvme_ctrl *ctrl, u8 log_page, void *log,
size_t size)
{
struct nvme_command c = { };
c.common.opcode = nvme_admin_get_log_page;
c.common.nsid = cpu_to_le32(NVME_NSID_ALL);
c.common.cdw10[0] = nvme_get_log_dw10(log_page, size);
return nvme_submit_sync_cmd(ctrl->admin_q, &c, log, size);
return nvme_get_log_ext(ctrl, NULL, log_page, log, size, 0);
}
static int nvme_get_effects_log(struct nvme_ctrl *ctrl)
@ -2440,7 +2458,7 @@ static int nvme_dev_user_cmd(struct nvme_ctrl *ctrl, void __user *argp)
struct nvme_ns *ns;
int ret;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
if (list_empty(&ctrl->namespaces)) {
ret = -ENOTTY;
goto out_unlock;
@ -2457,14 +2475,14 @@ static int nvme_dev_user_cmd(struct nvme_ctrl *ctrl, void __user *argp)
dev_warn(ctrl->device,
"using deprecated NVME_IOCTL_IO_CMD ioctl on the char device!\n");
kref_get(&ns->kref);
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
ret = nvme_user_cmd(ctrl, ns, argp);
nvme_put_ns(ns);
return ret;
out_unlock:
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
return ret;
}
@ -2793,6 +2811,7 @@ static int __nvme_check_ids(struct nvme_subsystem *subsys,
list_for_each_entry(h, &subsys->nsheads, entry) {
if (nvme_ns_ids_valid(&new->ids) &&
!list_empty(&h->list) &&
nvme_ns_ids_equal(&new->ids, &h->ids))
return -EINVAL;
}
@ -2893,7 +2912,7 @@ static struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
{
struct nvme_ns *ns, *ret = NULL;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list) {
if (ns->head->ns_id == nsid) {
if (!kref_get_unless_zero(&ns->kref))
@ -2904,7 +2923,7 @@ static struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
if (ns->head->ns_id > nsid)
break;
}
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
return ret;
}
@ -2949,7 +2968,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
ns->queue = blk_mq_init_queue(ctrl->tagset);
if (IS_ERR(ns->queue))
goto out_free_ns;
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, ns->queue);
blk_queue_flag_set(QUEUE_FLAG_NONROT, ns->queue);
ns->queue->queuedata = ns;
ns->ctrl = ctrl;
@ -3015,9 +3034,9 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
__nvme_revalidate_disk(disk, id);
mutex_lock(&ctrl->namespaces_mutex);
down_write(&ctrl->namespaces_rwsem);
list_add_tail(&ns->list, &ctrl->namespaces);
mutex_unlock(&ctrl->namespaces_mutex);
up_write(&ctrl->namespaces_rwsem);
nvme_get_ctrl(ctrl);
@ -3033,6 +3052,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
ns->disk->disk_name);
nvme_mpath_add_disk(ns->head);
nvme_fault_inject_init(ns);
return;
out_unlink_ns:
mutex_lock(&ctrl->subsys->lock);
@ -3051,6 +3071,7 @@ static void nvme_ns_remove(struct nvme_ns *ns)
if (test_and_set_bit(NVME_NS_REMOVING, &ns->flags))
return;
nvme_fault_inject_fini(ns);
if (ns->disk && ns->disk->flags & GENHD_FL_UP) {
sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
&nvme_ns_id_attr_group);
@ -3067,9 +3088,9 @@ static void nvme_ns_remove(struct nvme_ns *ns)
list_del_rcu(&ns->siblings);
mutex_unlock(&ns->ctrl->subsys->lock);
mutex_lock(&ns->ctrl->namespaces_mutex);
down_write(&ns->ctrl->namespaces_rwsem);
list_del_init(&ns->list);
mutex_unlock(&ns->ctrl->namespaces_mutex);
up_write(&ns->ctrl->namespaces_rwsem);
synchronize_srcu(&ns->head->srcu);
nvme_mpath_check_last_path(ns);
@ -3093,11 +3114,18 @@ static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl,
unsigned nsid)
{
struct nvme_ns *ns, *next;
LIST_HEAD(rm_list);
down_write(&ctrl->namespaces_rwsem);
list_for_each_entry_safe(ns, next, &ctrl->namespaces, list) {
if (ns->head->ns_id > nsid)
nvme_ns_remove(ns);
list_move_tail(&ns->list, &rm_list);
}
up_write(&ctrl->namespaces_rwsem);
list_for_each_entry_safe(ns, next, &rm_list, list)
nvme_ns_remove(ns);
}
static int nvme_scan_ns_list(struct nvme_ctrl *ctrl, unsigned nn)
@ -3107,7 +3135,7 @@ static int nvme_scan_ns_list(struct nvme_ctrl *ctrl, unsigned nn)
unsigned i, j, nsid, prev = 0, num_lists = DIV_ROUND_UP(nn, 1024);
int ret = 0;
ns_list = kzalloc(0x1000, GFP_KERNEL);
ns_list = kzalloc(NVME_IDENTIFY_DATA_SIZE, GFP_KERNEL);
if (!ns_list)
return -ENOMEM;
@ -3173,9 +3201,9 @@ static void nvme_scan_work(struct work_struct *work)
}
nvme_scan_ns_sequential(ctrl, nn);
done:
mutex_lock(&ctrl->namespaces_mutex);
down_write(&ctrl->namespaces_rwsem);
list_sort(NULL, &ctrl->namespaces, ns_cmp);
mutex_unlock(&ctrl->namespaces_mutex);
up_write(&ctrl->namespaces_rwsem);
kfree(id);
}
@ -3197,6 +3225,7 @@ EXPORT_SYMBOL_GPL(nvme_queue_scan);
void nvme_remove_namespaces(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns, *next;
LIST_HEAD(ns_list);
/*
* The dead states indicates the controller was not gracefully
@ -3207,7 +3236,11 @@ void nvme_remove_namespaces(struct nvme_ctrl *ctrl)
if (ctrl->state == NVME_CTRL_DEAD)
nvme_kill_queues(ctrl);
list_for_each_entry_safe(ns, next, &ctrl->namespaces, list)
down_write(&ctrl->namespaces_rwsem);
list_splice_init(&ctrl->namespaces, &ns_list);
up_write(&ctrl->namespaces_rwsem);
list_for_each_entry_safe(ns, next, &ns_list, list)
nvme_ns_remove(ns);
}
EXPORT_SYMBOL_GPL(nvme_remove_namespaces);
@ -3337,6 +3370,8 @@ void nvme_stop_ctrl(struct nvme_ctrl *ctrl)
flush_work(&ctrl->async_event_work);
flush_work(&ctrl->scan_work);
cancel_work_sync(&ctrl->fw_act_work);
if (ctrl->ops->stop_ctrl)
ctrl->ops->stop_ctrl(ctrl);
}
EXPORT_SYMBOL_GPL(nvme_stop_ctrl);
@ -3394,7 +3429,7 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
ctrl->state = NVME_CTRL_NEW;
spin_lock_init(&ctrl->lock);
INIT_LIST_HEAD(&ctrl->namespaces);
mutex_init(&ctrl->namespaces_mutex);
init_rwsem(&ctrl->namespaces_rwsem);
ctrl->dev = dev;
ctrl->ops = ops;
ctrl->quirks = quirks;
@ -3455,7 +3490,7 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
/* Forcibly unquiesce queues to avoid blocking dispatch */
if (ctrl->admin_q)
@ -3474,7 +3509,7 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl)
/* Forcibly unquiesce queues to avoid blocking dispatch */
blk_mq_unquiesce_queue(ns->queue);
}
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
}
EXPORT_SYMBOL_GPL(nvme_kill_queues);
@ -3482,10 +3517,10 @@ void nvme_unfreeze(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list)
blk_mq_unfreeze_queue(ns->queue);
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
}
EXPORT_SYMBOL_GPL(nvme_unfreeze);
@ -3493,13 +3528,13 @@ void nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout)
{
struct nvme_ns *ns;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list) {
timeout = blk_mq_freeze_queue_wait_timeout(ns->queue, timeout);
if (timeout <= 0)
break;
}
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
}
EXPORT_SYMBOL_GPL(nvme_wait_freeze_timeout);
@ -3507,10 +3542,10 @@ void nvme_wait_freeze(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list)
blk_mq_freeze_queue_wait(ns->queue);
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
}
EXPORT_SYMBOL_GPL(nvme_wait_freeze);
@ -3518,10 +3553,10 @@ void nvme_start_freeze(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list)
blk_freeze_queue_start(ns->queue);
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
}
EXPORT_SYMBOL_GPL(nvme_start_freeze);
@ -3529,10 +3564,10 @@ void nvme_stop_queues(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list)
blk_mq_quiesce_queue(ns->queue);
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
}
EXPORT_SYMBOL_GPL(nvme_stop_queues);
@ -3540,10 +3575,10 @@ void nvme_start_queues(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list)
blk_mq_unquiesce_queue(ns->queue);
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
}
EXPORT_SYMBOL_GPL(nvme_start_queues);

79
drivers/nvme/host/fault_inject.c Normal file
View file

@ -0,0 +1,79 @@
/*
* fault injection support for nvme.
*
* Copyright (c) 2018, Oracle and/or its affiliates
*
*/
#include <linux/moduleparam.h>
#include "nvme.h"
static DECLARE_FAULT_ATTR(fail_default_attr);
/* optional fault injection attributes boot time option:
* nvme_core.fail_request=<interval>,<probability>,<space>,<times>
*/
static char *fail_request;
module_param(fail_request, charp, 0000);
void nvme_fault_inject_init(struct nvme_ns *ns)
{
struct dentry *dir, *parent;
char *name = ns->disk->disk_name;
struct nvme_fault_inject *fault_inj = &ns->fault_inject;
struct fault_attr *attr = &fault_inj->attr;
/* set default fault injection attribute */
if (fail_request)
setup_fault_attr(&fail_default_attr, fail_request);
/* create debugfs directory and attribute */
parent = debugfs_create_dir(name, NULL);
if (!parent) {
pr_warn("%s: failed to create debugfs directory\n", name);
return;
}
*attr = fail_default_attr;
dir = fault_create_debugfs_attr("fault_inject", parent, attr);
if (IS_ERR(dir)) {
pr_warn("%s: failed to create debugfs attr\n", name);
debugfs_remove_recursive(parent);
return;
}
ns->fault_inject.parent = parent;
/* create debugfs for status code and dont_retry */
fault_inj->status = NVME_SC_INVALID_OPCODE;
fault_inj->dont_retry = true;
debugfs_create_x16("status", 0600, dir, &fault_inj->status);
debugfs_create_bool("dont_retry", 0600, dir, &fault_inj->dont_retry);
}
void nvme_fault_inject_fini(struct nvme_ns *ns)
{
/* remove debugfs directories */
debugfs_remove_recursive(ns->fault_inject.parent);
}
void nvme_should_fail(struct request *req)
{
struct gendisk *disk = req->rq_disk;
struct nvme_ns *ns = NULL;
u16 status;
/*
* make sure this request is coming from a valid namespace
*/
if (!disk)
return;
ns = disk->private_data;
if (ns && should_fail(&ns->fault_inject.attr, 1)) {
/* inject status code and DNR bit */
status = ns->fault_inject.status;
if (ns->fault_inject.dont_retry)
status |= NVME_SC_DNR;
nvme_req(req)->status = status;
}
}
EXPORT_SYMBOL_GPL(nvme_should_fail);

36
drivers/nvme/host/fc.c
View file

@ -588,6 +588,8 @@ nvme_fc_attach_to_suspended_rport(struct nvme_fc_lport *lport,
return ERR_PTR(-ESTALE);
}
rport->remoteport.port_role = pinfo->port_role;
rport->remoteport.port_id = pinfo->port_id;
rport->remoteport.port_state = FC_OBJSTATE_ONLINE;
rport->dev_loss_end = 0;
@ -768,8 +770,7 @@ nvme_fc_ctrl_connectivity_loss(struct nvme_fc_ctrl *ctrl)
*/
if (nvme_reset_ctrl(&ctrl->ctrl)) {
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: Couldn't schedule reset. "
"Deleting controller.\n",
"NVME-FC{%d}: Couldn't schedule reset.\n",
ctrl->cnum);
nvme_delete_ctrl(&ctrl->ctrl);
}
@ -836,8 +837,7 @@ nvme_fc_unregister_remoteport(struct nvme_fc_remote_port *portptr)
/* if dev_loss_tmo==0, dev loss is immediate */
if (!portptr->dev_loss_tmo) {
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: controller connectivity lost. "
"Deleting controller.\n",
"NVME-FC{%d}: controller connectivity lost.\n",
ctrl->cnum);
nvme_delete_ctrl(&ctrl->ctrl);
} else
@ -2076,20 +2076,10 @@ nvme_fc_timeout(struct request *rq, bool reserved)
{
struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
struct nvme_fc_ctrl *ctrl = op->ctrl;
int ret;
if (ctrl->rport->remoteport.port_state != FC_OBJSTATE_ONLINE ||
atomic_read(&op->state) == FCPOP_STATE_ABORTED)
return BLK_EH_RESET_TIMER;
ret = __nvme_fc_abort_op(ctrl, op);
if (ret)
/* io wasn't active to abort */
return BLK_EH_NOT_HANDLED;
/*
* we can't individually ABTS an io without affecting the queue,
* thus killing the queue, adn thus the association.
* thus killing the queue, and thus the association.
* So resolve by performing a controller reset, which will stop
* the host/io stack, terminate the association on the link,
* and recreate an association on the link.
@ -2191,7 +2181,7 @@ nvme_fc_start_fcp_op(struct nvme_fc_ctrl *ctrl, struct nvme_fc_queue *queue,
struct nvme_fc_cmd_iu *cmdiu = &op->cmd_iu;
struct nvme_command *sqe = &cmdiu->sqe;
u32 csn;
int ret;
int ret, opstate;
/*
* before attempting to send the io, check to see if we believe
@ -2269,6 +2259,9 @@ nvme_fc_start_fcp_op(struct nvme_fc_ctrl *ctrl, struct nvme_fc_queue *queue,
queue->lldd_handle, &op->fcp_req);
if (ret) {
opstate = atomic_xchg(&op->state, FCPOP_STATE_COMPLETE);
__nvme_fc_fcpop_chk_teardowns(ctrl, op, opstate);
if (!(op->flags & FCOP_FLAGS_AEN))
nvme_fc_unmap_data(ctrl, op->rq, op);
@ -2889,14 +2882,13 @@ nvme_fc_reconnect_or_delete(struct nvme_fc_ctrl *ctrl, int status)
if (portptr->port_state == FC_OBJSTATE_ONLINE)
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: Max reconnect attempts (%d) "
"reached. Removing controller\n",
"reached.\n",
ctrl->cnum, ctrl->ctrl.nr_reconnects);
else
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: dev_loss_tmo (%d) expired "
"while waiting for remoteport connectivity. "
"Removing controller\n", ctrl->cnum,
portptr->dev_loss_tmo);
"while waiting for remoteport connectivity.\n",
ctrl->cnum, portptr->dev_loss_tmo);
WARN_ON(nvme_delete_ctrl(&ctrl->ctrl));
}
}
@ -3133,6 +3125,10 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
}
if (ret) {
nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_DELETING);
cancel_work_sync(&ctrl->ctrl.reset_work);
cancel_delayed_work_sync(&ctrl->connect_work);
/* couldn't schedule retry - fail out */
dev_err(ctrl->ctrl.device,
"NVME-FC{%d}: Connect retry failed\n", ctrl->cnum);

761
drivers/nvme/host/lightnvm.c
View file

@ -35,6 +35,10 @@ enum nvme_nvm_admin_opcode {
nvme_nvm_admin_set_bb_tbl = 0xf1,
};
enum nvme_nvm_log_page {
NVME_NVM_LOG_REPORT_CHUNK = 0xca,
};
struct nvme_nvm_ph_rw {
__u8 opcode;
__u8 flags;
@ -51,6 +55,21 @@ struct nvme_nvm_ph_rw {
__le64 resv;
};
struct nvme_nvm_erase_blk {
__u8 opcode;
__u8 flags;
__u16 command_id;
__le32 nsid;
__u64 rsvd[2];
__le64 prp1;
__le64 prp2;
__le64 spba;
__le16 length;
__le16 control;
__le32 dsmgmt;
__le64 resv;
};
struct nvme_nvm_identity {
__u8 opcode;
__u8 flags;
@ -59,8 +78,7 @@ struct nvme_nvm_identity {
__u64 rsvd[2];
__le64 prp1;
__le64 prp2;
__le32 chnl_off;
__u32 rsvd11[5];
__u32 rsvd11[6];
};
struct nvme_nvm_getbbtbl {
@ -90,44 +108,18 @@ struct nvme_nvm_setbbtbl {
__u32 rsvd4[3];
};
struct nvme_nvm_erase_blk {
__u8 opcode;
__u8 flags;
__u16 command_id;
__le32 nsid;
__u64 rsvd[2];
__le64 prp1;
__le64 prp2;
__le64 spba;
__le16 length;
__le16 control;
__le32 dsmgmt;
__le64 resv;
};
struct nvme_nvm_command {
union {
struct nvme_common_command common;
struct nvme_nvm_identity identity;
struct nvme_nvm_ph_rw ph_rw;
struct nvme_nvm_erase_blk erase;
struct nvme_nvm_identity identity;
struct nvme_nvm_getbbtbl get_bb;
struct nvme_nvm_setbbtbl set_bb;
struct nvme_nvm_erase_blk erase;
};
};
#define NVME_NVM_LP_MLC_PAIRS 886
struct nvme_nvm_lp_mlc {
__le16 num_pairs;
__u8 pairs[NVME_NVM_LP_MLC_PAIRS];
};
struct nvme_nvm_lp_tbl {
__u8 id[8];
struct nvme_nvm_lp_mlc mlc;
};
struct nvme_nvm_id_group {
struct nvme_nvm_id12_grp {
__u8 mtype;
__u8 fmtype;
__le16 res16;
@ -150,11 +142,10 @@ struct nvme_nvm_id_group {
__le32 mpos;
__le32 mccap;
__le16 cpar;
__u8 reserved[10];
struct nvme_nvm_lp_tbl lptbl;
__u8 reserved[906];
} __packed;
struct nvme_nvm_addr_format {
struct nvme_nvm_id12_addrf {
__u8 ch_offset;
__u8 ch_len;
__u8 lun_offset;
@ -165,21 +156,22 @@ struct nvme_nvm_addr_format {
__u8 blk_len;
__u8 pg_offset;
__u8 pg_len;
__u8 sect_offset;
__u8 sect_len;
__u8 sec_offset;
__u8 sec_len;
__u8 res[4];
} __packed;
struct nvme_nvm_id {
struct nvme_nvm_id12 {
__u8 ver_id;
__u8 vmnt;
__u8 cgrps;
__u8 res;
__le32 cap;
__le32 dom;
struct nvme_nvm_addr_format ppaf;
struct nvme_nvm_id12_addrf ppaf;
__u8 resv[228];
struct nvme_nvm_id_group groups[4];
struct nvme_nvm_id12_grp grp;
__u8 resv2[2880];
} __packed;
struct nvme_nvm_bb_tbl {
@ -196,6 +188,68 @@ struct nvme_nvm_bb_tbl {
__u8 blk[0];
};
struct nvme_nvm_id20_addrf {
__u8 grp_len;
__u8 pu_len;
__u8 chk_len;
__u8 lba_len;
__u8 resv[4];
};
struct nvme_nvm_id20 {
__u8 mjr;
__u8 mnr;
__u8 resv[6];
struct nvme_nvm_id20_addrf lbaf;
__le32 mccap;
__u8 resv2[12];
__u8 wit;
__u8 resv3[31];
/* Geometry */
__le16 num_grp;
__le16 num_pu;
__le32 num_chk;
__le32 clba;
__u8 resv4[52];
/* Write data requirements */
__le32 ws_min;
__le32 ws_opt;
__le32 mw_cunits;
__le32 maxoc;
__le32 maxocpu;
__u8 resv5[44];
/* Performance related metrics */
__le32 trdt;
__le32 trdm;
__le32 twrt;
__le32 twrm;
__le32 tcrst;
__le32 tcrsm;
__u8 resv6[40];
/* Reserved area */
__u8 resv7[2816];
/* Vendor specific */
__u8 vs[1024];
};
struct nvme_nvm_chk_meta {
__u8 state;
__u8 type;
__u8 wi;
__u8 rsvd[5];
__le64 slba;
__le64 cnlb;
__le64 wp;
};
/*
* Check we didn't inadvertently grow the command struct
*/
@ -203,105 +257,238 @@ static inline void _nvme_nvm_check_size(void)
{
BUILD_BUG_ON(sizeof(struct nvme_nvm_identity) != 64);
BUILD_BUG_ON(sizeof(struct nvme_nvm_ph_rw) != 64);
BUILD_BUG_ON(sizeof(struct nvme_nvm_erase_blk) != 64);
BUILD_BUG_ON(sizeof(struct nvme_nvm_getbbtbl) != 64);
BUILD_BUG_ON(sizeof(struct nvme_nvm_setbbtbl) != 64);
BUILD_BUG_ON(sizeof(struct nvme_nvm_erase_blk) != 64);
BUILD_BUG_ON(sizeof(struct nvme_nvm_id_group) != 960);
BUILD_BUG_ON(sizeof(struct nvme_nvm_addr_format) != 16);
BUILD_BUG_ON(sizeof(struct nvme_nvm_id) != NVME_IDENTIFY_DATA_SIZE);
BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_grp) != 960);
BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_addrf) != 16);
BUILD_BUG_ON(sizeof(struct nvme_nvm_id12) != NVME_IDENTIFY_DATA_SIZE);
BUILD_BUG_ON(sizeof(struct nvme_nvm_bb_tbl) != 64);
BUILD_BUG_ON(sizeof(struct nvme_nvm_id20_addrf) != 8);
BUILD_BUG_ON(sizeof(struct nvme_nvm_id20) != NVME_IDENTIFY_DATA_SIZE);
BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) != 32);
BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) !=
sizeof(struct nvm_chk_meta));
}
static int init_grps(struct nvm_id *nvm_id, struct nvme_nvm_id *nvme_nvm_id)
static void nvme_nvm_set_addr_12(struct nvm_addrf_12 *dst,
struct nvme_nvm_id12_addrf *src)
{
struct nvme_nvm_id_group *src;
struct nvm_id_group *grp;
dst->ch_len = src->ch_len;
dst->lun_len = src->lun_len;
dst->blk_len = src->blk_len;
dst->pg_len = src->pg_len;
dst->pln_len = src->pln_len;
dst->sec_len = src->sec_len;
dst->ch_offset = src->ch_offset;
dst->lun_offset = src->lun_offset;
dst->blk_offset = src->blk_offset;
dst->pg_offset = src->pg_offset;
dst->pln_offset = src->pln_offset;
dst->sec_offset = src->sec_offset;
dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset;
dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset;
dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset;
dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset;
}
static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id,
struct nvm_geo *geo)
{
struct nvme_nvm_id12_grp *src;
int sec_per_pg, sec_per_pl, pg_per_blk;
if (nvme_nvm_id->cgrps != 1)
if (id->cgrps != 1)
return -EINVAL;
src = &nvme_nvm_id->groups[0];
grp = &nvm_id->grp;
src = &id->grp;
grp->mtype = src->mtype;
grp->fmtype = src->fmtype;
grp->num_ch = src->num_ch;
grp->num_lun = src->num_lun;
grp->num_chk = le16_to_cpu(src->num_chk);
grp->csecs = le16_to_cpu(src->csecs);
grp->sos = le16_to_cpu(src->sos);
pg_per_blk = le16_to_cpu(src->num_pg);
sec_per_pg = le16_to_cpu(src->fpg_sz) / grp->csecs;
sec_per_pl = sec_per_pg * src->num_pln;
grp->clba = sec_per_pl * pg_per_blk;
grp->ws_per_chk = pg_per_blk;
grp->mpos = le32_to_cpu(src->mpos);
grp->cpar = le16_to_cpu(src->cpar);
grp->mccap = le32_to_cpu(src->mccap);
grp->ws_opt = grp->ws_min = sec_per_pg;
grp->ws_seq = NVM_IO_SNGL_ACCESS;
if (grp->mpos & 0x020202) {
grp->ws_seq = NVM_IO_DUAL_ACCESS;
grp->ws_opt <<= 1;
} else if (grp->mpos & 0x040404) {
grp->ws_seq = NVM_IO_QUAD_ACCESS;
grp->ws_opt <<= 2;
if (src->mtype != 0) {
pr_err("nvm: memory type not supported\n");
return -EINVAL;
}
grp->trdt = le32_to_cpu(src->trdt);
grp->trdm = le32_to_cpu(src->trdm);
grp->tprt = le32_to_cpu(src->tprt);
grp->tprm = le32_to_cpu(src->tprm);
grp->tbet = le32_to_cpu(src->tbet);
grp->tbem = le32_to_cpu(src->tbem);
/* 1.2 spec. only reports a single version id - unfold */
geo->major_ver_id = id->ver_id;
geo->minor_ver_id = 2;
/* Set compacted version for upper layers */
geo->version = NVM_OCSSD_SPEC_12;
geo->num_ch = src->num_ch;
geo->num_lun = src->num_lun;
geo->all_luns = geo->num_ch * geo->num_lun;
geo->num_chk = le16_to_cpu(src->num_chk);
geo->csecs = le16_to_cpu(src->csecs);
geo->sos = le16_to_cpu(src->sos);
pg_per_blk = le16_to_cpu(src->num_pg);
sec_per_pg = le16_to_cpu(src->fpg_sz) / geo->csecs;
sec_per_pl = sec_per_pg * src->num_pln;
geo->clba = sec_per_pl * pg_per_blk;
geo->all_chunks = geo->all_luns * geo->num_chk;
geo->total_secs = geo->clba * geo->all_chunks;
geo->ws_min = sec_per_pg;
geo->ws_opt = sec_per_pg;
geo->mw_cunits = geo->ws_opt << 3; /* default to MLC safe values */
/* Do not impose values for maximum number of open blocks as it is
* unspecified in 1.2. Users of 1.2 must be aware of this and eventually
* specify these values through a quirk if restrictions apply.
*/
geo->maxoc = geo->all_luns * geo->num_chk;
geo->maxocpu = geo->num_chk;
geo->mccap = le32_to_cpu(src->mccap);
geo->trdt = le32_to_cpu(src->trdt);
geo->trdm = le32_to_cpu(src->trdm);
geo->tprt = le32_to_cpu(src->tprt);
geo->tprm = le32_to_cpu(src->tprm);
geo->tbet = le32_to_cpu(src->tbet);
geo->tbem = le32_to_cpu(src->tbem);
/* 1.2 compatibility */
grp->num_pln = src->num_pln;
grp->num_pg = le16_to_cpu(src->num_pg);
grp->fpg_sz = le16_to_cpu(src->fpg_sz);
geo->vmnt = id->vmnt;
geo->cap = le32_to_cpu(id->cap);
geo->dom = le32_to_cpu(id->dom);
geo->mtype = src->mtype;
geo->fmtype = src->fmtype;
geo->cpar = le16_to_cpu(src->cpar);
geo->mpos = le32_to_cpu(src->mpos);
geo->pln_mode = NVM_PLANE_SINGLE;
if (geo->mpos & 0x020202) {
geo->pln_mode = NVM_PLANE_DOUBLE;
geo->ws_opt <<= 1;
} else if (geo->mpos & 0x040404) {
geo->pln_mode = NVM_PLANE_QUAD;
geo->ws_opt <<= 2;
}
geo->num_pln = src->num_pln;
geo->num_pg = le16_to_cpu(src->num_pg);
geo->fpg_sz = le16_to_cpu(src->fpg_sz);
nvme_nvm_set_addr_12((struct nvm_addrf_12 *)&geo->addrf, &id->ppaf);
return 0;
}
static int nvme_nvm_identity(struct nvm_dev *nvmdev, struct nvm_id *nvm_id)
static void nvme_nvm_set_addr_20(struct nvm_addrf *dst,
struct nvme_nvm_id20_addrf *src)
{
dst->ch_len = src->grp_len;
dst->lun_len = src->pu_len;
dst->chk_len = src->chk_len;
dst->sec_len = src->lba_len;
dst->sec_offset = 0;
dst->chk_offset = dst->sec_len;
dst->lun_offset = dst->chk_offset + dst->chk_len;
dst->ch_offset = dst->lun_offset + dst->lun_len;
dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
dst->chk_mask = ((1ULL << dst->chk_len) - 1) << dst->chk_offset;
dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset;
}
static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id,
struct nvm_geo *geo)
{
geo->major_ver_id = id->mjr;
geo->minor_ver_id = id->mnr;
/* Set compacted version for upper layers */
geo->version = NVM_OCSSD_SPEC_20;
if (!(geo->major_ver_id == 2 && geo->minor_ver_id == 0)) {
pr_err("nvm: OCSSD version not supported (v%d.%d)\n",
geo->major_ver_id, geo->minor_ver_id);
return -EINVAL;
}
geo->num_ch = le16_to_cpu(id->num_grp);
geo->num_lun = le16_to_cpu(id->num_pu);
geo->all_luns = geo->num_ch * geo->num_lun;
geo->num_chk = le32_to_cpu(id->num_chk);
geo->clba = le32_to_cpu(id->clba);
geo->all_chunks = geo->all_luns * geo->num_chk;
geo->total_secs = geo->clba * geo->all_chunks;
geo->ws_min = le32_to_cpu(id->ws_min);
geo->ws_opt = le32_to_cpu(id->ws_opt);
geo->mw_cunits = le32_to_cpu(id->mw_cunits);
geo->maxoc = le32_to_cpu(id->maxoc);
geo->maxocpu = le32_to_cpu(id->maxocpu);
geo->trdt = le32_to_cpu(id->trdt);
geo->trdm = le32_to_cpu(id->trdm);
geo->tprt = le32_to_cpu(id->twrt);
geo->tprm = le32_to_cpu(id->twrm);
geo->tbet = le32_to_cpu(id->tcrst);
geo->tbem = le32_to_cpu(id->tcrsm);
nvme_nvm_set_addr_20(&geo->addrf, &id->lbaf);
return 0;
}
static int nvme_nvm_identity(struct nvm_dev *nvmdev)
{
struct nvme_ns *ns = nvmdev->q->queuedata;
struct nvme_nvm_id *nvme_nvm_id;
struct nvme_nvm_id12 *id;
struct nvme_nvm_command c = {};
int ret;
c.identity.opcode = nvme_nvm_admin_identity;
c.identity.nsid = cpu_to_le32(ns->head->ns_id);
c.identity.chnl_off = 0;
nvme_nvm_id = kmalloc(sizeof(struct nvme_nvm_id), GFP_KERNEL);
if (!nvme_nvm_id)
id = kmalloc(sizeof(struct nvme_nvm_id12), GFP_KERNEL);
if (!id)
return -ENOMEM;
ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c,
nvme_nvm_id, sizeof(struct nvme_nvm_id));
id, sizeof(struct nvme_nvm_id12));
if (ret) {
ret = -EIO;
goto out;
}
nvm_id->ver_id = nvme_nvm_id->ver_id;
nvm_id->vmnt = nvme_nvm_id->vmnt;
nvm_id->cap = le32_to_cpu(nvme_nvm_id->cap);
nvm_id->dom = le32_to_cpu(nvme_nvm_id->dom);
memcpy(&nvm_id->ppaf, &nvme_nvm_id->ppaf,
sizeof(struct nvm_addr_format));
/*
* The 1.2 and 2.0 specifications share the first byte in their geometry
* command to make it possible to know what version a device implements.
*/
switch (id->ver_id) {
case 1:
ret = nvme_nvm_setup_12(id, &nvmdev->geo);
break;
case 2:
ret = nvme_nvm_setup_20((struct nvme_nvm_id20 *)id,
&nvmdev->geo);
break;
default:
dev_err(ns->ctrl->device, "OCSSD revision not supported (%d)\n",
id->ver_id);
ret = -EINVAL;
}
ret = init_grps(nvm_id, nvme_nvm_id);
out:
kfree(nvme_nvm_id);
kfree(id);
return ret;
}
@ -314,7 +501,7 @@ static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
struct nvme_ctrl *ctrl = ns->ctrl;
struct nvme_nvm_command c = {};
struct nvme_nvm_bb_tbl *bb_tbl;
int nr_blks = geo->nr_chks * geo->plane_mode;
int nr_blks = geo->num_chk * geo->num_pln;
int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks;
int ret = 0;
@ -355,7 +542,7 @@ static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
goto out;
}
memcpy(blks, bb_tbl->blk, geo->nr_chks * geo->plane_mode);
memcpy(blks, bb_tbl->blk, geo->num_chk * geo->num_pln);
out:
kfree(bb_tbl);
return ret;
@ -382,6 +569,61 @@ static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr *ppas,
return ret;
}
/*
* Expect the lba in device format
*/
static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
struct nvm_chk_meta *meta,
sector_t slba, int nchks)
{
struct nvm_geo *geo = &ndev->geo;
struct nvme_ns *ns = ndev->q->queuedata;
struct nvme_ctrl *ctrl = ns->ctrl;
struct nvme_nvm_chk_meta *dev_meta = (struct nvme_nvm_chk_meta *)meta;
struct ppa_addr ppa;
size_t left = nchks * sizeof(struct nvme_nvm_chk_meta);
size_t log_pos, offset, len;
int ret, i;
/* Normalize lba address space to obtain log offset */
ppa.ppa = slba;
ppa = dev_to_generic_addr(ndev, ppa);
log_pos = ppa.m.chk;
log_pos += ppa.m.pu * geo->num_chk;
log_pos += ppa.m.grp * geo->num_lun * geo->num_chk;
offset = log_pos * sizeof(struct nvme_nvm_chk_meta);
while (left) {
len = min_t(unsigned int, left, ctrl->max_hw_sectors << 9);
ret = nvme_get_log_ext(ctrl, ns, NVME_NVM_LOG_REPORT_CHUNK,
dev_meta, len, offset);
if (ret) {
dev_err(ctrl->device, "Get REPORT CHUNK log error\n");
break;
}
for (i = 0; i < len; i += sizeof(struct nvme_nvm_chk_meta)) {
meta->state = dev_meta->state;
meta->type = dev_meta->type;
meta->wi = dev_meta->wi;
meta->slba = le64_to_cpu(dev_meta->slba);
meta->cnlb = le64_to_cpu(dev_meta->cnlb);
meta->wp = le64_to_cpu(dev_meta->wp);
meta++;
dev_meta++;
}
offset += len;
left -= len;
}
return ret;
}
static inline void nvme_nvm_rqtocmd(struct nvm_rq *rqd, struct nvme_ns *ns,
struct nvme_nvm_command *c)
{
@ -513,6 +755,8 @@ static struct nvm_dev_ops nvme_nvm_dev_ops = {
.get_bb_tbl = nvme_nvm_get_bb_tbl,
.set_bb_tbl = nvme_nvm_set_bb_tbl,
.get_chk_meta = nvme_nvm_get_chk_meta,
.submit_io = nvme_nvm_submit_io,
.submit_io_sync = nvme_nvm_submit_io_sync,
@ -520,8 +764,6 @@ static struct nvm_dev_ops nvme_nvm_dev_ops = {
.destroy_dma_pool = nvme_nvm_destroy_dma_pool,
.dev_dma_alloc = nvme_nvm_dev_dma_alloc,
.dev_dma_free = nvme_nvm_dev_dma_free,
.max_phys_sect = 64,
};
static int nvme_nvm_submit_user_cmd(struct request_queue *q,
@ -722,6 +964,15 @@ int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg)
}
}
void nvme_nvm_update_nvm_info(struct nvme_ns *ns)
{
struct nvm_dev *ndev = ns->ndev;
struct nvm_geo *geo = &ndev->geo;
geo->csecs = 1 << ns->lba_shift;
geo->sos = ns->ms;
}
int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
{
struct request_queue *q = ns->queue;
@ -748,125 +999,205 @@ void nvme_nvm_unregister(struct nvme_ns *ns)
}
static ssize_t nvm_dev_attr_show(struct device *dev,
struct device_attribute *dattr, char *page)
struct device_attribute *dattr, char *page)
{
struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
struct nvm_dev *ndev = ns->ndev;
struct nvm_id *id;
struct nvm_id_group *grp;
struct nvm_geo *geo = &ndev->geo;
struct attribute *attr;
if (!ndev)
return 0;
id = &ndev->identity;
grp = &id->grp;
attr = &dattr->attr;
if (strcmp(attr->name, "version") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->ver_id);
} else if (strcmp(attr->name, "vendor_opcode") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->vmnt);
if (geo->major_ver_id == 1)
return scnprintf(page, PAGE_SIZE, "%u\n",
geo->major_ver_id);
else
return scnprintf(page, PAGE_SIZE, "%u.%u\n",
geo->major_ver_id,
geo->minor_ver_id);
} else if (strcmp(attr->name, "capabilities") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->cap);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->cap);
} else if (strcmp(attr->name, "read_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdt);
} else if (strcmp(attr->name, "read_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdm);
} else {
return scnprintf(page,
PAGE_SIZE,
"Unhandled attr(%s) in `%s`\n",
attr->name, __func__);
}
}
static ssize_t nvm_dev_attr_show_ppaf(struct nvm_addrf_12 *ppaf, char *page)
{
return scnprintf(page, PAGE_SIZE,
"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
ppaf->ch_offset, ppaf->ch_len,
ppaf->lun_offset, ppaf->lun_len,
ppaf->pln_offset, ppaf->pln_len,
ppaf->blk_offset, ppaf->blk_len,
ppaf->pg_offset, ppaf->pg_len,
ppaf->sec_offset, ppaf->sec_len);
}
static ssize_t nvm_dev_attr_show_12(struct device *dev,
struct device_attribute *dattr, char *page)
{
struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
struct nvm_dev *ndev = ns->ndev;
struct nvm_geo *geo = &ndev->geo;
struct attribute *attr;
if (!ndev)
return 0;
attr = &dattr->attr;
if (strcmp(attr->name, "vendor_opcode") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->vmnt);
} else if (strcmp(attr->name, "device_mode") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", id->dom);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->dom);
/* kept for compatibility */
} else if (strcmp(attr->name, "media_manager") == 0) {
return scnprintf(page, PAGE_SIZE, "%s\n", "gennvm");
} else if (strcmp(attr->name, "ppa_format") == 0) {
return scnprintf(page, PAGE_SIZE,
"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
id->ppaf.ch_offset, id->ppaf.ch_len,
id->ppaf.lun_offset, id->ppaf.lun_len,
id->ppaf.pln_offset, id->ppaf.pln_len,
id->ppaf.blk_offset, id->ppaf.blk_len,
id->ppaf.pg_offset, id->ppaf.pg_len,
id->ppaf.sect_offset, id->ppaf.sect_len);
return nvm_dev_attr_show_ppaf((void *)&geo->addrf, page);
} else if (strcmp(attr->name, "media_type") == 0) { /* u8 */
return scnprintf(page, PAGE_SIZE, "%u\n", grp->mtype);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->mtype);
} else if (strcmp(attr->name, "flash_media_type") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->fmtype);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->fmtype);
} else if (strcmp(attr->name, "num_channels") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_ch);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch);
} else if (strcmp(attr->name, "num_luns") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_lun);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun);
} else if (strcmp(attr->name, "num_planes") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_pln);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pln);
} else if (strcmp(attr->name, "num_blocks") == 0) { /* u16 */
return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_chk);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk);
} else if (strcmp(attr->name, "num_pages") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->num_pg);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pg);
} else if (strcmp(attr->name, "page_size") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->fpg_sz);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->fpg_sz);
} else if (strcmp(attr->name, "hw_sector_size") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->csecs);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->csecs);
} else if (strcmp(attr->name, "oob_sector_size") == 0) {/* u32 */
return scnprintf(page, PAGE_SIZE, "%u\n", grp->sos);
} else if (strcmp(attr->name, "read_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->trdt);
} else if (strcmp(attr->name, "read_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->trdm);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->sos);
} else if (strcmp(attr->name, "prog_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->tprt);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
} else if (strcmp(attr->name, "prog_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->tprm);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
} else if (strcmp(attr->name, "erase_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->tbet);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
} else if (strcmp(attr->name, "erase_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", grp->tbem);
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
} else if (strcmp(attr->name, "multiplane_modes") == 0) {
return scnprintf(page, PAGE_SIZE, "0x%08x\n", grp->mpos);
return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mpos);
} else if (strcmp(attr->name, "media_capabilities") == 0) {
return scnprintf(page, PAGE_SIZE, "0x%08x\n", grp->mccap);
return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mccap);
} else if (strcmp(attr->name, "max_phys_secs") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n",
ndev->ops->max_phys_sect);
return scnprintf(page, PAGE_SIZE, "%u\n", NVM_MAX_VLBA);
} else {
return scnprintf(page,
PAGE_SIZE,
"Unhandled attr(%s) in `nvm_dev_attr_show`\n",
attr->name);
return scnprintf(page, PAGE_SIZE,
"Unhandled attr(%s) in `%s`\n",
attr->name, __func__);
}
}
#define NVM_DEV_ATTR_RO(_name) \
static ssize_t nvm_dev_attr_show_20(struct device *dev,
struct device_attribute *dattr, char *page)
{
struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
struct nvm_dev *ndev = ns->ndev;
struct nvm_geo *geo = &ndev->geo;
struct attribute *attr;
if (!ndev)
return 0;
attr = &dattr->attr;
if (strcmp(attr->name, "groups") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch);
} else if (strcmp(attr->name, "punits") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun);
} else if (strcmp(attr->name, "chunks") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk);
} else if (strcmp(attr->name, "clba") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->clba);
} else if (strcmp(attr->name, "ws_min") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_min);
} else if (strcmp(attr->name, "ws_opt") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_opt);
} else if (strcmp(attr->name, "maxoc") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxoc);
} else if (strcmp(attr->name, "maxocpu") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxocpu);
} else if (strcmp(attr->name, "mw_cunits") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->mw_cunits);
} else if (strcmp(attr->name, "write_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
} else if (strcmp(attr->name, "write_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
} else if (strcmp(attr->name, "reset_typ") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
} else if (strcmp(attr->name, "reset_max") == 0) {
return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
} else {
return scnprintf(page, PAGE_SIZE,
"Unhandled attr(%s) in `%s`\n",
attr->name, __func__);
}
}
#define NVM_DEV_ATTR_RO(_name) \
DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show, NULL)
#define NVM_DEV_ATTR_12_RO(_name) \
DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_12, NULL)
#define NVM_DEV_ATTR_20_RO(_name) \
DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_20, NULL)
/* general attributes */
static NVM_DEV_ATTR_RO(version);
static NVM_DEV_ATTR_RO(vendor_opcode);
static NVM_DEV_ATTR_RO(capabilities);
static NVM_DEV_ATTR_RO(device_mode);
static NVM_DEV_ATTR_RO(ppa_format);
static NVM_DEV_ATTR_RO(media_manager);
static NVM_DEV_ATTR_RO(media_type);
static NVM_DEV_ATTR_RO(flash_media_type);
static NVM_DEV_ATTR_RO(num_channels);
static NVM_DEV_ATTR_RO(num_luns);
static NVM_DEV_ATTR_RO(num_planes);
static NVM_DEV_ATTR_RO(num_blocks);
static NVM_DEV_ATTR_RO(num_pages);
static NVM_DEV_ATTR_RO(page_size);
static NVM_DEV_ATTR_RO(hw_sector_size);
static NVM_DEV_ATTR_RO(oob_sector_size);
static NVM_DEV_ATTR_RO(read_typ);
static NVM_DEV_ATTR_RO(read_max);
static NVM_DEV_ATTR_RO(prog_typ);
static NVM_DEV_ATTR_RO(prog_max);
static NVM_DEV_ATTR_RO(erase_typ);
static NVM_DEV_ATTR_RO(erase_max);
static NVM_DEV_ATTR_RO(multiplane_modes);
static NVM_DEV_ATTR_RO(media_capabilities);
static NVM_DEV_ATTR_RO(max_phys_secs);
static struct attribute *nvm_dev_attrs[] = {
/* 1.2 values */
static NVM_DEV_ATTR_12_RO(vendor_opcode);
static NVM_DEV_ATTR_12_RO(device_mode);
static NVM_DEV_ATTR_12_RO(ppa_format);
static NVM_DEV_ATTR_12_RO(media_manager);
static NVM_DEV_ATTR_12_RO(media_type);
static NVM_DEV_ATTR_12_RO(flash_media_type);
static NVM_DEV_ATTR_12_RO(num_channels);
static NVM_DEV_ATTR_12_RO(num_luns);
static NVM_DEV_ATTR_12_RO(num_planes);
static NVM_DEV_ATTR_12_RO(num_blocks);
static NVM_DEV_ATTR_12_RO(num_pages);
static NVM_DEV_ATTR_12_RO(page_size);
static NVM_DEV_ATTR_12_RO(hw_sector_size);
static NVM_DEV_ATTR_12_RO(oob_sector_size);
static NVM_DEV_ATTR_12_RO(prog_typ);
static NVM_DEV_ATTR_12_RO(prog_max);
static NVM_DEV_ATTR_12_RO(erase_typ);
static NVM_DEV_ATTR_12_RO(erase_max);
static NVM_DEV_ATTR_12_RO(multiplane_modes);
static NVM_DEV_ATTR_12_RO(media_capabilities);
static NVM_DEV_ATTR_12_RO(max_phys_secs);
static struct attribute *nvm_dev_attrs_12[] = {
&dev_attr_version.attr,
&dev_attr_vendor_opcode.attr,
&dev_attr_capabilities.attr,
&dev_attr_vendor_opcode.attr,
&dev_attr_device_mode.attr,
&dev_attr_media_manager.attr,
&dev_attr_ppa_format.attr,
&dev_attr_media_type.attr,
&dev_attr_flash_media_type.attr,
@ -887,22 +1218,92 @@ static struct attribute *nvm_dev_attrs[] = {
&dev_attr_multiplane_modes.attr,
&dev_attr_media_capabilities.attr,
&dev_attr_max_phys_secs.attr,
NULL,
};
static const struct attribute_group nvm_dev_attr_group = {
static const struct attribute_group nvm_dev_attr_group_12 = {
.name = "lightnvm",
.attrs = nvm_dev_attrs,
.attrs = nvm_dev_attrs_12,
};
/* 2.0 values */
static NVM_DEV_ATTR_20_RO(groups);
static NVM_DEV_ATTR_20_RO(punits);
static NVM_DEV_ATTR_20_RO(chunks);
static NVM_DEV_ATTR_20_RO(clba);
static NVM_DEV_ATTR_20_RO(ws_min);
static NVM_DEV_ATTR_20_RO(ws_opt);
static NVM_DEV_ATTR_20_RO(maxoc);
static NVM_DEV_ATTR_20_RO(maxocpu);
static NVM_DEV_ATTR_20_RO(mw_cunits);
static NVM_DEV_ATTR_20_RO(write_typ);
static NVM_DEV_ATTR_20_RO(write_max);
static NVM_DEV_ATTR_20_RO(reset_typ);
static NVM_DEV_ATTR_20_RO(reset_max);
static struct attribute *nvm_dev_attrs_20[] = {
&dev_attr_version.attr,
&dev_attr_capabilities.attr,
&dev_attr_groups.attr,
&dev_attr_punits.attr,
&dev_attr_chunks.attr,
&dev_attr_clba.attr,
&dev_attr_ws_min.attr,
&dev_attr_ws_opt.attr,
&dev_attr_maxoc.attr,
&dev_attr_maxocpu.attr,
&dev_attr_mw_cunits.attr,
&dev_attr_read_typ.attr,
&dev_attr_read_max.attr,
&dev_attr_write_typ.attr,
&dev_attr_write_max.attr,
&dev_attr_reset_typ.attr,
&dev_attr_reset_max.attr,
NULL,
};
static const struct attribute_group nvm_dev_attr_group_20 = {
.name = "lightnvm",
.attrs = nvm_dev_attrs_20,
};
int nvme_nvm_register_sysfs(struct nvme_ns *ns)
{
return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
&nvm_dev_attr_group);
struct nvm_dev *ndev = ns->ndev;
struct nvm_geo *geo = &ndev->geo;
if (!ndev)
return -EINVAL;
switch (geo->major_ver_id) {
case 1:
return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
&nvm_dev_attr_group_12);
case 2:
return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
&nvm_dev_attr_group_20);
}
return -EINVAL;
}
void nvme_nvm_unregister_sysfs(struct nvme_ns *ns)
{
sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
&nvm_dev_attr_group);
struct nvm_dev *ndev = ns->ndev;
struct nvm_geo *geo = &ndev->geo;
switch (geo->major_ver_id) {
case 1:
sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
&nvm_dev_attr_group_12);
break;
case 2:
sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
&nvm_dev_attr_group_20);
break;
}
}

8
drivers/nvme/host/multipath.c
View file

@ -44,12 +44,12 @@ void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
mutex_lock(&ctrl->namespaces_mutex);
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list) {
if (ns->head->disk)
kblockd_schedule_work(&ns->head->requeue_work);
}
mutex_unlock(&ctrl->namespaces_mutex);
up_read(&ctrl->namespaces_rwsem);
}
static struct nvme_ns *__nvme_find_path(struct nvme_ns_head *head)
@ -162,13 +162,13 @@ int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, struct nvme_ns_head *head)
if (!(ctrl->subsys->cmic & (1 << 1)) || !multipath)
return 0;
q = blk_alloc_queue_node(GFP_KERNEL, NUMA_NO_NODE);
q = blk_alloc_queue_node(GFP_KERNEL, NUMA_NO_NODE, NULL);
if (!q)
goto out;
q->queuedata = head;
blk_queue_make_request(q, nvme_ns_head_make_request);
q->poll_fn = nvme_ns_head_poll;
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
/* set to a default value for 512 until disk is validated */
blk_queue_logical_block_size(q, 512);

35
drivers/nvme/host/nvme.h
View file

@ -21,6 +21,7 @@
#include <linux/blk-mq.h>
#include <linux/lightnvm.h>
#include <linux/sed-opal.h>
#include <linux/fault-inject.h>
extern unsigned int nvme_io_timeout;
#define NVME_IO_TIMEOUT (nvme_io_timeout * HZ)
@ -140,7 +141,7 @@ struct nvme_ctrl {
struct blk_mq_tag_set *tagset;
struct blk_mq_tag_set *admin_tagset;
struct list_head namespaces;
struct mutex namespaces_mutex;
struct rw_semaphore namespaces_rwsem;
struct device ctrl_device;
struct device *device; /* char device */
struct cdev cdev;
@ -261,6 +262,15 @@ struct nvme_ns_head {
int instance;
};
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
struct nvme_fault_inject {
struct fault_attr attr;
struct dentry *parent;
bool dont_retry; /* DNR, do not retry */
u16 status; /* status code */
};
#endif
struct nvme_ns {
struct list_head list;
@ -282,6 +292,11 @@ struct nvme_ns {
#define NVME_NS_REMOVING 0
#define NVME_NS_DEAD 1
u16 noiob;
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
struct nvme_fault_inject fault_inject;
#endif
};
struct nvme_ctrl_ops {
@ -298,8 +313,19 @@ struct nvme_ctrl_ops {
void (*delete_ctrl)(struct nvme_ctrl *ctrl);
int (*get_address)(struct nvme_ctrl *ctrl, char *buf, int size);
int (*reinit_request)(void *data, struct request *rq);
void (*stop_ctrl)(struct nvme_ctrl *ctrl);
};
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
void nvme_fault_inject_init(struct nvme_ns *ns);
void nvme_fault_inject_fini(struct nvme_ns *ns);
void nvme_should_fail(struct request *req);
#else
static inline void nvme_fault_inject_init(struct nvme_ns *ns) {}
static inline void nvme_fault_inject_fini(struct nvme_ns *ns) {}
static inline void nvme_should_fail(struct request *req) {}
#endif
static inline bool nvme_ctrl_ready(struct nvme_ctrl *ctrl)
{
u32 val = 0;
@ -336,6 +362,8 @@ static inline void nvme_end_request(struct request *req, __le16 status,
rq->status = le16_to_cpu(status) >> 1;
rq->result = result;
/* inject error when permitted by fault injection framework */
nvme_should_fail(req);
blk_mq_complete_request(req);
}
@ -401,6 +429,9 @@ int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl);
int nvme_delete_ctrl(struct nvme_ctrl *ctrl);
int nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl);
int nvme_get_log_ext(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
u8 log_page, void *log, size_t size, size_t offset);
extern const struct attribute_group nvme_ns_id_attr_group;
extern const struct block_device_operations nvme_ns_head_ops;
@ -461,12 +492,14 @@ static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
#endif /* CONFIG_NVME_MULTIPATH */
#ifdef CONFIG_NVM
void nvme_nvm_update_nvm_info(struct nvme_ns *ns);
int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
void nvme_nvm_unregister(struct nvme_ns *ns);
int nvme_nvm_register_sysfs(struct nvme_ns *ns);
void nvme_nvm_unregister_sysfs(struct nvme_ns *ns);
int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg);
#else
static inline void nvme_nvm_update_nvm_info(struct nvme_ns *ns) {};
static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name,
int node)
{

26
drivers/nvme/host/pci.c
View file

@ -414,7 +414,7 @@ static int nvme_pci_map_queues(struct blk_mq_tag_set *set)
{
struct nvme_dev *dev = set->driver_data;
return blk_mq_pci_map_queues(set, to_pci_dev(dev->dev));
return blk_mq_pci_map_queues(set, to_pci_dev(dev->dev), 0);
}
/**
@ -2197,7 +2197,11 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
if (!dead) {
if (shutdown)
nvme_wait_freeze_timeout(&dev->ctrl, NVME_IO_TIMEOUT);
}
nvme_stop_queues(&dev->ctrl);
if (!dead) {
/*
* If the controller is still alive tell it to stop using the
* host memory buffer. In theory the shutdown / reset should
@ -2206,11 +2210,6 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
*/
if (dev->host_mem_descs)
nvme_set_host_mem(dev, 0);
}
nvme_stop_queues(&dev->ctrl);
if (!dead) {
nvme_disable_io_queues(dev);
nvme_disable_admin_queue(dev, shutdown);
}
@ -2416,6 +2415,13 @@ static int nvme_pci_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val)
return 0;
}
static int nvme_pci_get_address(struct nvme_ctrl *ctrl, char *buf, int size)
{
struct pci_dev *pdev = to_pci_dev(to_nvme_dev(ctrl)->dev);
return snprintf(buf, size, "%s", dev_name(&pdev->dev));
}
static const struct nvme_ctrl_ops nvme_pci_ctrl_ops = {
.name = "pcie",
.module = THIS_MODULE,
@ -2425,6 +2431,7 @@ static const struct nvme_ctrl_ops nvme_pci_ctrl_ops = {
.reg_read64 = nvme_pci_reg_read64,
.free_ctrl = nvme_pci_free_ctrl,
.submit_async_event = nvme_pci_submit_async_event,
.get_address = nvme_pci_get_address,
};
static int nvme_dev_map(struct nvme_dev *dev)
@ -2461,10 +2468,13 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev)
} else if (pdev->vendor == 0x144d && pdev->device == 0xa804) {
/*
* Samsung SSD 960 EVO drops off the PCIe bus after system
* suspend on a Ryzen board, ASUS PRIME B350M-A.
* suspend on a Ryzen board, ASUS PRIME B350M-A, as well as
* within few minutes after bootup on a Coffee Lake board -
* ASUS PRIME Z370-A
*/
if (dmi_match(DMI_BOARD_VENDOR, "ASUSTeK COMPUTER INC.") &&
dmi_match(DMI_BOARD_NAME, "PRIME B350M-A"))
(dmi_match(DMI_BOARD_NAME, "PRIME B350M-A") ||
dmi_match(DMI_BOARD_NAME, "PRIME Z370-A")))
return NVME_QUIRK_NO_APST;
}

34
drivers/nvme/host/rdma.c
View file

@ -867,6 +867,14 @@ static int nvme_rdma_configure_io_queues(struct nvme_rdma_ctrl *ctrl, bool new)
return ret;
}
static void nvme_rdma_stop_ctrl(struct nvme_ctrl *nctrl)
{
struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(nctrl);
cancel_work_sync(&ctrl->err_work);
cancel_delayed_work_sync(&ctrl->reconnect_work);
}
static void nvme_rdma_free_ctrl(struct nvme_ctrl *nctrl)
{
struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(nctrl);
@ -899,7 +907,6 @@ static void nvme_rdma_reconnect_or_remove(struct nvme_rdma_ctrl *ctrl)
queue_delayed_work(nvme_wq, &ctrl->reconnect_work,
ctrl->ctrl.opts->reconnect_delay * HZ);
} else {
dev_info(ctrl->ctrl.device, "Removing controller...\n");
nvme_delete_ctrl(&ctrl->ctrl);
}
}
@ -974,8 +981,8 @@ static void nvme_rdma_error_recovery_work(struct work_struct *work)
nvme_start_queues(&ctrl->ctrl);
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING)) {
/* state change failure should never happen */
WARN_ON_ONCE(1);
/* state change failure is ok if we're in DELETING state */
WARN_ON_ONCE(ctrl->ctrl.state != NVME_CTRL_DELETING);
return;
}
@ -1719,9 +1726,6 @@ static const struct blk_mq_ops nvme_rdma_admin_mq_ops = {
static void nvme_rdma_shutdown_ctrl(struct nvme_rdma_ctrl *ctrl, bool shutdown)
{
cancel_work_sync(&ctrl->err_work);
cancel_delayed_work_sync(&ctrl->reconnect_work);
if (ctrl->ctrl.queue_count > 1) {
nvme_stop_queues(&ctrl->ctrl);
blk_mq_tagset_busy_iter(&ctrl->tag_set,
@ -1799,6 +1803,7 @@ static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = {
.submit_async_event = nvme_rdma_submit_async_event,
.delete_ctrl = nvme_rdma_delete_ctrl,
.get_address = nvmf_get_address,
.stop_ctrl = nvme_rdma_stop_ctrl,
};
static inline bool
@ -2025,15 +2030,26 @@ static struct nvmf_transport_ops nvme_rdma_transport = {
static void nvme_rdma_remove_one(struct ib_device *ib_device, void *client_data)
{
struct nvme_rdma_ctrl *ctrl;
struct nvme_rdma_device *ndev;
bool found = false;
mutex_lock(&device_list_mutex);
list_for_each_entry(ndev, &device_list, entry) {
if (ndev->dev == ib_device) {
found = true;
break;
}
}
mutex_unlock(&device_list_mutex);
if (!found)
return;
/* Delete all controllers using this device */
mutex_lock(&nvme_rdma_ctrl_mutex);
list_for_each_entry(ctrl, &nvme_rdma_ctrl_list, list) {
if (ctrl->device->dev != ib_device)
continue;
dev_info(ctrl->ctrl.device,
"Removing ctrl: NQN \"%s\", addr %pISp\n",
ctrl->ctrl.opts->subsysnqn, &ctrl->addr);
nvme_delete_ctrl(&ctrl->ctrl);
}
mutex_unlock(&nvme_rdma_ctrl_mutex);

65
drivers/nvme/target/configfs.c
View file

@ -23,6 +23,15 @@
static const struct config_item_type nvmet_host_type;
static const struct config_item_type nvmet_subsys_type;
static const struct nvmet_transport_name {
u8 type;
const char *name;
} nvmet_transport_names[] = {
{ NVMF_TRTYPE_RDMA, "rdma" },
{ NVMF_TRTYPE_FC, "fc" },
{ NVMF_TRTYPE_LOOP, "loop" },
};
/*
* nvmet_port Generic ConfigFS definitions.
* Used in any place in the ConfigFS tree that refers to an address.
@ -208,43 +217,30 @@ CONFIGFS_ATTR(nvmet_, addr_trsvcid);
static ssize_t nvmet_addr_trtype_show(struct config_item *item,
char *page)
{
switch (to_nvmet_port(item)->disc_addr.trtype) {
case NVMF_TRTYPE_RDMA:
return sprintf(page, "rdma\n");
case NVMF_TRTYPE_LOOP:
return sprintf(page, "loop\n");
case NVMF_TRTYPE_FC:
return sprintf(page, "fc\n");
default:
return sprintf(page, "\n");
struct nvmet_port *port = to_nvmet_port(item);
int i;
for (i = 0; i < ARRAY_SIZE(nvmet_transport_names); i++) {
if (port->disc_addr.trtype != nvmet_transport_names[i].type)
continue;
return sprintf(page, "%s\n", nvmet_transport_names[i].name);
}
return sprintf(page, "\n");
}
static void nvmet_port_init_tsas_rdma(struct nvmet_port *port)
{
port->disc_addr.trtype = NVMF_TRTYPE_RDMA;
memset(&port->disc_addr.tsas.rdma, 0, NVMF_TSAS_SIZE);
port->disc_addr.tsas.rdma.qptype = NVMF_RDMA_QPTYPE_CONNECTED;
port->disc_addr.tsas.rdma.prtype = NVMF_RDMA_PRTYPE_NOT_SPECIFIED;
port->disc_addr.tsas.rdma.cms = NVMF_RDMA_CMS_RDMA_CM;
}
static void nvmet_port_init_tsas_loop(struct nvmet_port *port)
{
port->disc_addr.trtype = NVMF_TRTYPE_LOOP;
memset(&port->disc_addr.tsas, 0, NVMF_TSAS_SIZE);
}
static void nvmet_port_init_tsas_fc(struct nvmet_port *port)
{
port->disc_addr.trtype = NVMF_TRTYPE_FC;
memset(&port->disc_addr.tsas, 0, NVMF_TSAS_SIZE);
}
static ssize_t nvmet_addr_trtype_store(struct config_item *item,
const char *page, size_t count)
{
struct nvmet_port *port = to_nvmet_port(item);
int i;
if (port->enabled) {
pr_err("Cannot modify address while enabled\n");
@ -252,17 +248,18 @@ static ssize_t nvmet_addr_trtype_store(struct config_item *item,
return -EACCES;
}
if (sysfs_streq(page, "rdma")) {
nvmet_port_init_tsas_rdma(port);
} else if (sysfs_streq(page, "loop")) {
nvmet_port_init_tsas_loop(port);
} else if (sysfs_streq(page, "fc")) {
nvmet_port_init_tsas_fc(port);
} else {
pr_err("Invalid value '%s' for trtype\n", page);
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(nvmet_transport_names); i++) {
if (sysfs_streq(page, nvmet_transport_names[i].name))
goto found;
}
pr_err("Invalid value '%s' for trtype\n", page);
return -EINVAL;
found:
memset(&port->disc_addr.tsas, 0, NVMF_TSAS_SIZE);
port->disc_addr.trtype = nvmet_transport_names[i].type;
if (port->disc_addr.trtype == NVMF_TRTYPE_RDMA)
nvmet_port_init_tsas_rdma(port);
return count;
}
@ -333,13 +330,13 @@ static ssize_t nvmet_ns_device_uuid_store(struct config_item *item,
return ret ? ret : count;
}
CONFIGFS_ATTR(nvmet_ns_, device_uuid);
static ssize_t nvmet_ns_device_nguid_show(struct config_item *item, char *page)
{
return sprintf(page, "%pUb\n", &to_nvmet_ns(item)->nguid);
}
CONFIGFS_ATTR(nvmet_ns_, device_uuid);
static ssize_t nvmet_ns_device_nguid_store(struct config_item *item,
const char *page, size_t count)
{

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