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Merge branch 'akpm' (patches from Andrew)

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Merge misc patches from Andrew Morton:
 "A few stragglers"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  tools/testing/selftests/Makefile: alphasort the TARGETS list
  mm/zsmalloc: adjust order of functions
  ocfs2: fix journal commit deadlock
  ocfs2/dlm: fix race between dispatched_work and dlm_lockres_grab_inflight_worker
  ocfs2: reflink: fix slow unlink for refcounted file
  mm/memory.c:do_shared_fault(): add comment
  .mailmap: Santosh Shilimkar has moved
  .mailmap: update akpm@osdl.org
  lib/show_mem.c: add cma reserved information
  fs/proc/meminfo.c: include cma info in proc/meminfo
  mm: cma: split cma-reserved in dmesg log
  hfsplus: fix longname handling
  mm/mempolicy.c: remove unnecessary is_valid_nodemask()
This commit is contained in:
Linus Torvalds 2014-12-18 19:08:25 -08:00
commit 018cb13eb3
20 changed files with 390 additions and 296 deletions
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4
.mailmap
View file

@ -17,7 +17,7 @@ Aleksey Gorelov <aleksey_gorelov@phoenix.com>
Al Viro <viro@ftp.linux.org.uk>
Al Viro <viro@zenIV.linux.org.uk>
Andreas Herrmann <aherrman@de.ibm.com>
Andrew Morton <akpm@osdl.org>
Andrew Morton <akpm@linux-foundation.org>
Andrew Vasquez <andrew.vasquez@qlogic.com>
Andy Adamson <andros@citi.umich.edu>
Archit Taneja <archit@ti.com>
@ -102,6 +102,8 @@ Rudolf Marek <R.Marek@sh.cvut.cz>
Rui Saraiva <rmps@joel.ist.utl.pt>
Sachin P Sant <ssant@in.ibm.com>
Sam Ravnborg <sam@mars.ravnborg.org>
Santosh Shilimkar <ssantosh@kernel.org>
Santosh Shilimkar <santosh.shilimkar@oracle.org>
Sascha Hauer <s.hauer@pengutronix.de>
S.Çağlar Onur <caglar@pardus.org.tr>
Shiraz Hashim <shiraz.linux.kernel@gmail.com> <shiraz.hashim@st.com>

89
fs/hfsplus/catalog.c
View file

@ -38,21 +38,30 @@ int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
return hfsplus_strcmp(&k1->cat.name, &k2->cat.name);
}
void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key,
u32 parent, struct qstr *str)
/* Generates key for catalog file/folders record. */
int hfsplus_cat_build_key(struct super_block *sb,
hfsplus_btree_key *key, u32 parent, struct qstr *str)
{
int len;
int len, err;
key->cat.parent = cpu_to_be32(parent);
if (str) {
hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN,
str->name, str->len);
len = be16_to_cpu(key->cat.name.length);
} else {
key->cat.name.length = 0;
len = 0;
}
err = hfsplus_asc2uni(sb, &key->cat.name, HFSPLUS_MAX_STRLEN,
str->name, str->len);
if (unlikely(err < 0))
return err;
len = be16_to_cpu(key->cat.name.length);
key->key_len = cpu_to_be16(6 + 2 * len);
return 0;
}
/* Generates key for catalog thread record. */
void hfsplus_cat_build_key_with_cnid(struct super_block *sb,
hfsplus_btree_key *key, u32 parent)
{
key->cat.parent = cpu_to_be32(parent);
key->cat.name.length = 0;
key->key_len = cpu_to_be16(6);
}
static void hfsplus_cat_build_key_uni(hfsplus_btree_key *key, u32 parent,
@ -167,11 +176,16 @@ static int hfsplus_fill_cat_thread(struct super_block *sb,
hfsplus_cat_entry *entry, int type,
u32 parentid, struct qstr *str)
{
int err;
entry->type = cpu_to_be16(type);
entry->thread.reserved = 0;
entry->thread.parentID = cpu_to_be32(parentid);
hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN,
err = hfsplus_asc2uni(sb, &entry->thread.nodeName, HFSPLUS_MAX_STRLEN,
str->name, str->len);
if (unlikely(err < 0))
return err;
return 10 + be16_to_cpu(entry->thread.nodeName.length) * 2;
}
@ -183,7 +197,7 @@ int hfsplus_find_cat(struct super_block *sb, u32 cnid,
int err;
u16 type;
hfsplus_cat_build_key(sb, fd->search_key, cnid, NULL);
hfsplus_cat_build_key_with_cnid(sb, fd->search_key, cnid);
err = hfs_brec_read(fd, &tmp, sizeof(hfsplus_cat_entry));
if (err)
return err;
@ -250,11 +264,16 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir,
if (err)
return err;
hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
entry_size = hfsplus_fill_cat_thread(sb, &entry,
S_ISDIR(inode->i_mode) ?
HFSPLUS_FOLDER_THREAD : HFSPLUS_FILE_THREAD,
dir->i_ino, str);
if (unlikely(entry_size < 0)) {
err = entry_size;
goto err2;
}
err = hfs_brec_find(&fd, hfs_find_rec_by_key);
if (err != -ENOENT) {
if (!err)
@ -265,7 +284,10 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir,
if (err)
goto err2;
hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
if (unlikely(err))
goto err1;
entry_size = hfsplus_cat_build_record(&entry, cnid, inode);
err = hfs_brec_find(&fd, hfs_find_rec_by_key);
if (err != -ENOENT) {
@ -288,7 +310,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir,
return 0;
err1:
hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
if (!hfs_brec_find(&fd, hfs_find_rec_by_key))
hfs_brec_remove(&fd);
err2:
@ -313,7 +335,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
if (!str) {
int len;
hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
err = hfs_brec_find(&fd, hfs_find_rec_by_key);
if (err)
goto out;
@ -329,7 +351,9 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
off + 2, len);
fd.search_key->key_len = cpu_to_be16(6 + len);
} else
hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, str);
if (unlikely(err))
goto out;
err = hfs_brec_find(&fd, hfs_find_rec_by_key);
if (err)
@ -360,7 +384,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str)
if (err)
goto out;
hfsplus_cat_build_key(sb, fd.search_key, cnid, NULL);
hfsplus_cat_build_key_with_cnid(sb, fd.search_key, cnid);
err = hfs_brec_find(&fd, hfs_find_rec_by_key);
if (err)
goto out;
@ -405,7 +429,11 @@ int hfsplus_rename_cat(u32 cnid,
dst_fd = src_fd;
/* find the old dir entry and read the data */
hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
err = hfsplus_cat_build_key(sb, src_fd.search_key,
src_dir->i_ino, src_name);
if (unlikely(err))
goto out;
err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
if (err)
goto out;
@ -419,7 +447,11 @@ int hfsplus_rename_cat(u32 cnid,
type = be16_to_cpu(entry.type);
/* create new dir entry with the data from the old entry */
hfsplus_cat_build_key(sb, dst_fd.search_key, dst_dir->i_ino, dst_name);
err = hfsplus_cat_build_key(sb, dst_fd.search_key,
dst_dir->i_ino, dst_name);
if (unlikely(err))
goto out;
err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
if (err != -ENOENT) {
if (!err)
@ -436,7 +468,11 @@ int hfsplus_rename_cat(u32 cnid,
dst_dir->i_mtime = dst_dir->i_ctime = CURRENT_TIME_SEC;
/* finally remove the old entry */
hfsplus_cat_build_key(sb, src_fd.search_key, src_dir->i_ino, src_name);
err = hfsplus_cat_build_key(sb, src_fd.search_key,
src_dir->i_ino, src_name);
if (unlikely(err))
goto out;
err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
if (err)
goto out;
@ -449,7 +485,7 @@ int hfsplus_rename_cat(u32 cnid,
src_dir->i_mtime = src_dir->i_ctime = CURRENT_TIME_SEC;
/* remove old thread entry */
hfsplus_cat_build_key(sb, src_fd.search_key, cnid, NULL);
hfsplus_cat_build_key_with_cnid(sb, src_fd.search_key, cnid);
err = hfs_brec_find(&src_fd, hfs_find_rec_by_key);
if (err)
goto out;
@ -459,9 +495,14 @@ int hfsplus_rename_cat(u32 cnid,
goto out;
/* create new thread entry */
hfsplus_cat_build_key(sb, dst_fd.search_key, cnid, NULL);
hfsplus_cat_build_key_with_cnid(sb, dst_fd.search_key, cnid);
entry_size = hfsplus_fill_cat_thread(sb, &entry, type,
dst_dir->i_ino, dst_name);
if (unlikely(entry_size < 0)) {
err = entry_size;
goto out;
}
err = hfs_brec_find(&dst_fd, hfs_find_rec_by_key);
if (err != -ENOENT) {
if (!err)

11
fs/hfsplus/dir.c
View file

@ -44,7 +44,10 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd);
if (err)
return ERR_PTR(err);
hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino, &dentry->d_name);
err = hfsplus_cat_build_key(sb, fd.search_key, dir->i_ino,
&dentry->d_name);
if (unlikely(err < 0))
goto fail;
again:
err = hfs_brec_read(&fd, &entry, sizeof(entry));
if (err) {
@ -97,9 +100,11 @@ static struct dentry *hfsplus_lookup(struct inode *dir, struct dentry *dentry,
be32_to_cpu(entry.file.permissions.dev);
str.len = sprintf(name, "iNode%d", linkid);
str.name = name;
hfsplus_cat_build_key(sb, fd.search_key,
err = hfsplus_cat_build_key(sb, fd.search_key,
HFSPLUS_SB(sb)->hidden_dir->i_ino,
&str);
if (unlikely(err < 0))
goto fail;
goto again;
}
} else if (!dentry->d_fsdata)
@ -145,7 +150,7 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx)
err = -ENOMEM;
goto out;
}
hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL);
hfsplus_cat_build_key_with_cnid(sb, fd.search_key, inode->i_ino);
err = hfs_brec_find(&fd, hfs_find_rec_by_key);
if (err)
goto out;

4
fs/hfsplus/hfsplus_fs.h
View file

@ -443,8 +443,10 @@ int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1,
const hfsplus_btree_key *k2);
int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1,
const hfsplus_btree_key *k2);
void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key,
int hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key,
u32 parent, struct qstr *str);
void hfsplus_cat_build_key_with_cnid(struct super_block *sb,
hfsplus_btree_key *key, u32 parent);
void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms);
int hfsplus_find_cat(struct super_block *sb, u32 cnid,
struct hfs_find_data *fd);

4
fs/hfsplus/super.c
View file

@ -515,7 +515,9 @@ static int hfsplus_fill_super(struct super_block *sb, void *data, int silent)
err = hfs_find_init(sbi->cat_tree, &fd);
if (err)
goto out_put_root;
hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_ROOT_CNID, &str);
err = hfsplus_cat_build_key(sb, fd.search_key, HFSPLUS_ROOT_CNID, &str);
if (unlikely(err < 0))
goto out_put_root;
if (!hfs_brec_read(&fd, &entry, sizeof(entry))) {
hfs_find_exit(&fd);
if (entry.type != cpu_to_be16(HFSPLUS_FOLDER))

28
fs/ocfs2/alloc.c
View file

@ -5662,7 +5662,7 @@ int ocfs2_remove_btree_range(struct inode *inode,
struct ocfs2_extent_tree *et,
u32 cpos, u32 phys_cpos, u32 len, int flags,
struct ocfs2_cached_dealloc_ctxt *dealloc,
u64 refcount_loc)
u64 refcount_loc, bool refcount_tree_locked)
{
int ret, credits = 0, extra_blocks = 0;
u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
@ -5676,11 +5676,13 @@ int ocfs2_remove_btree_range(struct inode *inode,
BUG_ON(!(OCFS2_I(inode)->ip_dyn_features &
OCFS2_HAS_REFCOUNT_FL));
ret = ocfs2_lock_refcount_tree(osb, refcount_loc, 1,
&ref_tree, NULL);
if (ret) {
mlog_errno(ret);
goto bail;
if (!refcount_tree_locked) {
ret = ocfs2_lock_refcount_tree(osb, refcount_loc, 1,
&ref_tree, NULL);
if (ret) {
mlog_errno(ret);
goto bail;
}
}
ret = ocfs2_prepare_refcount_change_for_del(inode,
@ -7021,6 +7023,7 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
u64 refcount_loc = le64_to_cpu(di->i_refcount_loc);
struct ocfs2_extent_tree et;
struct ocfs2_cached_dealloc_ctxt dealloc;
struct ocfs2_refcount_tree *ref_tree = NULL;
ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), di_bh);
ocfs2_init_dealloc_ctxt(&dealloc);
@ -7130,9 +7133,18 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
phys_cpos = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
if ((flags & OCFS2_EXT_REFCOUNTED) && trunc_len && !ref_tree) {
status = ocfs2_lock_refcount_tree(osb, refcount_loc, 1,
&ref_tree, NULL);
if (status) {
mlog_errno(status);
goto bail;
}
}
status = ocfs2_remove_btree_range(inode, &et, trunc_cpos,
phys_cpos, trunc_len, flags, &dealloc,
refcount_loc);
refcount_loc, true);
if (status < 0) {
mlog_errno(status);
goto bail;
@ -7147,6 +7159,8 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
goto start;
bail:
if (ref_tree)
ocfs2_unlock_refcount_tree(osb, ref_tree, 1);
ocfs2_schedule_truncate_log_flush(osb, 1);

2
fs/ocfs2/alloc.h
View file

@ -142,7 +142,7 @@ int ocfs2_remove_btree_range(struct inode *inode,
struct ocfs2_extent_tree *et,
u32 cpos, u32 phys_cpos, u32 len, int flags,
struct ocfs2_cached_dealloc_ctxt *dealloc,
u64 refcount_loc);
u64 refcount_loc, bool refcount_tree_locked);
int ocfs2_num_free_extents(struct ocfs2_super *osb,
struct ocfs2_extent_tree *et);

16
fs/ocfs2/aops.c
View file

@ -894,7 +894,7 @@ void ocfs2_unlock_and_free_pages(struct page **pages, int num_pages)
}
}
static void ocfs2_free_write_ctxt(struct ocfs2_write_ctxt *wc)
static void ocfs2_unlock_pages(struct ocfs2_write_ctxt *wc)
{
int i;
@ -915,7 +915,11 @@ static void ocfs2_free_write_ctxt(struct ocfs2_write_ctxt *wc)
page_cache_release(wc->w_target_page);
}
ocfs2_unlock_and_free_pages(wc->w_pages, wc->w_num_pages);
}
static void ocfs2_free_write_ctxt(struct ocfs2_write_ctxt *wc)
{
ocfs2_unlock_pages(wc);
brelse(wc->w_di_bh);
kfree(wc);
}
@ -2042,11 +2046,19 @@ int ocfs2_write_end_nolock(struct address_space *mapping,
ocfs2_update_inode_fsync_trans(handle, inode, 1);
ocfs2_journal_dirty(handle, wc->w_di_bh);
/* unlock pages before dealloc since it needs acquiring j_trans_barrier
* lock, or it will cause a deadlock since journal commit threads holds
* this lock and will ask for the page lock when flushing the data.
* put it here to preserve the unlock order.
*/
ocfs2_unlock_pages(wc);
ocfs2_commit_trans(osb, handle);
ocfs2_run_deallocs(osb, &wc->w_dealloc);
ocfs2_free_write_ctxt(wc);
brelse(wc->w_di_bh);
kfree(wc);
return copied;
}

2
fs/ocfs2/dir.c
View file

@ -4479,7 +4479,7 @@ int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh)
p_cpos = ocfs2_blocks_to_clusters(dir->i_sb, blkno);
ret = ocfs2_remove_btree_range(dir, &et, cpos, p_cpos, clen, 0,
&dealloc, 0);
&dealloc, 0, false);
if (ret) {
mlog_errno(ret);
goto out;

12
fs/ocfs2/dlm/dlmmaster.c
View file

@ -695,14 +695,6 @@ void __dlm_lockres_grab_inflight_worker(struct dlm_ctxt *dlm,
res->inflight_assert_workers);
}
static void dlm_lockres_grab_inflight_worker(struct dlm_ctxt *dlm,
struct dlm_lock_resource *res)
{
spin_lock(&res->spinlock);
__dlm_lockres_grab_inflight_worker(dlm, res);
spin_unlock(&res->spinlock);
}
static void __dlm_lockres_drop_inflight_worker(struct dlm_ctxt *dlm,
struct dlm_lock_resource *res)
{
@ -1646,6 +1638,7 @@ int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data,
}
mlog(0, "%u is the owner of %.*s, cleaning everyone else\n",
dlm->node_num, res->lockname.len, res->lockname.name);
spin_lock(&res->spinlock);
ret = dlm_dispatch_assert_master(dlm, res, 0, request->node_idx,
DLM_ASSERT_MASTER_MLE_CLEANUP);
if (ret < 0) {
@ -1653,7 +1646,8 @@ int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data,
response = DLM_MASTER_RESP_ERROR;
dlm_lockres_put(res);
} else
dlm_lockres_grab_inflight_worker(dlm, res);
__dlm_lockres_grab_inflight_worker(dlm, res);
spin_unlock(&res->spinlock);
} else {
if (res)
dlm_lockres_put(res);

2
fs/ocfs2/file.c
View file

@ -1803,7 +1803,7 @@ static int ocfs2_remove_inode_range(struct inode *inode,
ret = ocfs2_remove_btree_range(inode, &et, trunc_cpos,
phys_cpos, trunc_len, flags,
&dealloc, refcount_loc);
&dealloc, refcount_loc, false);
if (ret < 0) {
mlog_errno(ret);
goto out;

15
fs/proc/meminfo.c
View file

@ -12,6 +12,9 @@
#include <linux/vmstat.h>
#include <linux/atomic.h>
#include <linux/vmalloc.h>
#ifdef CONFIG_CMA
#include <linux/cma.h>
#endif
#include <asm/page.h>
#include <asm/pgtable.h>
#include "internal.h"
@ -137,6 +140,10 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
#endif
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
"AnonHugePages: %8lu kB\n"
#endif
#ifdef CONFIG_CMA
"CmaTotal: %8lu kB\n"
"CmaFree: %8lu kB\n"
#endif
,
K(i.totalram),
@ -187,11 +194,15 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
vmi.used >> 10,
vmi.largest_chunk >> 10
#ifdef CONFIG_MEMORY_FAILURE
,atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)
, atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)
#endif
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
, K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
HPAGE_PMD_NR)
#endif
#ifdef CONFIG_CMA
, K(totalcma_pages)
, K(global_page_state(NR_FREE_CMA_PAGES))
#endif
);

1
include/linux/cma.h
View file

@ -15,6 +15,7 @@
struct cma;
extern unsigned long totalcma_pages;
extern phys_addr_t cma_get_base(struct cma *cma);
extern unsigned long cma_get_size(struct cma *cma);

6
lib/show_mem.c
View file

@ -8,6 +8,7 @@
#include <linux/mm.h>
#include <linux/nmi.h>
#include <linux/quicklist.h>
#include <linux/cma.h>
void show_mem(unsigned int filter)
{
@ -38,7 +39,12 @@ void show_mem(unsigned int filter)
printk("%lu pages RAM\n", total);
printk("%lu pages HighMem/MovableOnly\n", highmem);
#ifdef CONFIG_CMA
printk("%lu pages reserved\n", (reserved - totalcma_pages));
printk("%lu pages cma reserved\n", totalcma_pages);
#else
printk("%lu pages reserved\n", reserved);
#endif
#ifdef CONFIG_QUICKLIST
printk("%lu pages in pagetable cache\n",
quicklist_total_size());

1
mm/cma.c
View file

@ -337,6 +337,7 @@ int __init cma_declare_contiguous(phys_addr_t base,
if (ret)
goto err;
totalcma_pages += (size / PAGE_SIZE);
pr_info("Reserved %ld MiB at %pa\n", (unsigned long)size / SZ_1M,
&base);
return 0;

6
mm/memory.c
View file

@ -2996,6 +2996,12 @@ static int do_shared_fault(struct mm_struct *mm, struct vm_area_struct *vma,
if (set_page_dirty(fault_page))
dirtied = 1;
/*
* Take a local copy of the address_space - page.mapping may be zeroed
* by truncate after unlock_page(). The address_space itself remains
* pinned by vma->vm_file's reference. We rely on unlock_page()'s
* release semantics to prevent the compiler from undoing this copying.
*/
mapping = fault_page->mapping;
unlock_page(fault_page);
if ((dirtied || vma->vm_ops->page_mkwrite) && mapping) {

10
mm/mempolicy.c
View file

@ -162,12 +162,6 @@ static const struct mempolicy_operations {
enum mpol_rebind_step step);
} mpol_ops[MPOL_MAX];
/* Check that the nodemask contains at least one populated zone */
static int is_valid_nodemask(const nodemask_t *nodemask)
{
return nodes_intersects(*nodemask, node_states[N_MEMORY]);
}
static inline int mpol_store_user_nodemask(const struct mempolicy *pol)
{
return pol->flags & MPOL_MODE_FLAGS;
@ -202,7 +196,7 @@ static int mpol_new_preferred(struct mempolicy *pol, const nodemask_t *nodes)
static int mpol_new_bind(struct mempolicy *pol, const nodemask_t *nodes)
{
if (!is_valid_nodemask(nodes))
if (nodes_empty(*nodes))
return -EINVAL;
pol->v.nodes = *nodes;
return 0;
@ -234,7 +228,7 @@ static int mpol_set_nodemask(struct mempolicy *pol,
nodes = NULL; /* explicit local allocation */
else {
if (pol->flags & MPOL_F_RELATIVE_NODES)
mpol_relative_nodemask(&nsc->mask2, nodes,&nsc->mask1);
mpol_relative_nodemask(&nsc->mask2, nodes, &nsc->mask1);
else
nodes_and(nsc->mask2, *nodes, nsc->mask1);

6
mm/page_alloc.c
View file

@ -111,6 +111,7 @@ static DEFINE_SPINLOCK(managed_page_count_lock);
unsigned long totalram_pages __read_mostly;
unsigned long totalreserve_pages __read_mostly;
unsigned long totalcma_pages __read_mostly;
/*
* When calculating the number of globally allowed dirty pages, there
* is a certain number of per-zone reserves that should not be
@ -5586,7 +5587,7 @@ void __init mem_init_print_info(const char *str)
pr_info("Memory: %luK/%luK available "
"(%luK kernel code, %luK rwdata, %luK rodata, "
"%luK init, %luK bss, %luK reserved"
"%luK init, %luK bss, %luK reserved, %luK cma-reserved"
#ifdef CONFIG_HIGHMEM
", %luK highmem"
#endif
@ -5594,7 +5595,8 @@ void __init mem_init_print_info(const char *str)
nr_free_pages() << (PAGE_SHIFT-10), physpages << (PAGE_SHIFT-10),
codesize >> 10, datasize >> 10, rosize >> 10,
(init_data_size + init_code_size) >> 10, bss_size >> 10,
(physpages - totalram_pages) << (PAGE_SHIFT-10),
(physpages - totalram_pages - totalcma_pages) << (PAGE_SHIFT-10),
totalcma_pages << (PAGE_SHIFT-10),
#ifdef CONFIG_HIGHMEM
totalhigh_pages << (PAGE_SHIFT-10),
#endif

448
mm/zsmalloc.c
View file

@ -884,19 +884,6 @@ static struct notifier_block zs_cpu_nb = {
.notifier_call = zs_cpu_notifier
};
static void zs_unregister_cpu_notifier(void)
{
int cpu;
cpu_notifier_register_begin();
for_each_online_cpu(cpu)
zs_cpu_notifier(NULL, CPU_DEAD, (void *)(long)cpu);
__unregister_cpu_notifier(&zs_cpu_nb);
cpu_notifier_register_done();
}
static int zs_register_cpu_notifier(void)
{
int cpu, uninitialized_var(ret);
@ -914,6 +901,19 @@ static int zs_register_cpu_notifier(void)
return notifier_to_errno(ret);
}
static void zs_unregister_cpu_notifier(void)
{
int cpu;
cpu_notifier_register_begin();
for_each_online_cpu(cpu)
zs_cpu_notifier(NULL, CPU_DEAD, (void *)(long)cpu);
__unregister_cpu_notifier(&zs_cpu_nb);
cpu_notifier_register_done();
}
static void init_zs_size_classes(void)
{
int nr;
@ -925,31 +925,6 @@ static void init_zs_size_classes(void)
zs_size_classes = nr;
}
static void __exit zs_exit(void)
{
#ifdef CONFIG_ZPOOL
zpool_unregister_driver(&zs_zpool_driver);
#endif
zs_unregister_cpu_notifier();
}
static int __init zs_init(void)
{
int ret = zs_register_cpu_notifier();
if (ret) {
zs_unregister_cpu_notifier();
return ret;
}
init_zs_size_classes();
#ifdef CONFIG_ZPOOL
zpool_register_driver(&zs_zpool_driver);
#endif
return 0;
}
static unsigned int get_maxobj_per_zspage(int size, int pages_per_zspage)
{
return pages_per_zspage * PAGE_SIZE / size;
@ -967,6 +942,202 @@ static bool can_merge(struct size_class *prev, int size, int pages_per_zspage)
return true;
}
unsigned long zs_get_total_pages(struct zs_pool *pool)
{
return atomic_long_read(&pool->pages_allocated);
}
EXPORT_SYMBOL_GPL(zs_get_total_pages);
/**
* zs_map_object - get address of allocated object from handle.
* @pool: pool from which the object was allocated
* @handle: handle returned from zs_malloc
*
* Before using an object allocated from zs_malloc, it must be mapped using
* this function. When done with the object, it must be unmapped using
* zs_unmap_object.
*
* Only one object can be mapped per cpu at a time. There is no protection
* against nested mappings.
*
* This function returns with preemption and page faults disabled.
*/
void *zs_map_object(struct zs_pool *pool, unsigned long handle,
enum zs_mapmode mm)
{
struct page *page;
unsigned long obj_idx, off;
unsigned int class_idx;
enum fullness_group fg;
struct size_class *class;
struct mapping_area *area;
struct page *pages[2];
BUG_ON(!handle);
/*
* Because we use per-cpu mapping areas shared among the
* pools/users, we can't allow mapping in interrupt context
* because it can corrupt another users mappings.
*/
BUG_ON(in_interrupt());
obj_handle_to_location(handle, &page, &obj_idx);
get_zspage_mapping(get_first_page(page), &class_idx, &fg);
class = pool->size_class[class_idx];
off = obj_idx_to_offset(page, obj_idx, class->size);
area = &get_cpu_var(zs_map_area);
area->vm_mm = mm;
if (off + class->size <= PAGE_SIZE) {
/* this object is contained entirely within a page */
area->vm_addr = kmap_atomic(page);
return area->vm_addr + off;
}
/* this object spans two pages */
pages[0] = page;
pages[1] = get_next_page(page);
BUG_ON(!pages[1]);
return __zs_map_object(area, pages, off, class->size);
}
EXPORT_SYMBOL_GPL(zs_map_object);
void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
{
struct page *page;
unsigned long obj_idx, off;
unsigned int class_idx;
enum fullness_group fg;
struct size_class *class;
struct mapping_area *area;
BUG_ON(!handle);
obj_handle_to_location(handle, &page, &obj_idx);
get_zspage_mapping(get_first_page(page), &class_idx, &fg);
class = pool->size_class[class_idx];
off = obj_idx_to_offset(page, obj_idx, class->size);
area = this_cpu_ptr(&zs_map_area);
if (off + class->size <= PAGE_SIZE)
kunmap_atomic(area->vm_addr);
else {
struct page *pages[2];
pages[0] = page;
pages[1] = get_next_page(page);
BUG_ON(!pages[1]);
__zs_unmap_object(area, pages, off, class->size);
}
put_cpu_var(zs_map_area);
}
EXPORT_SYMBOL_GPL(zs_unmap_object);
/**
* zs_malloc - Allocate block of given size from pool.
* @pool: pool to allocate from
* @size: size of block to allocate
*
* On success, handle to the allocated object is returned,
* otherwise 0.
* Allocation requests with size > ZS_MAX_ALLOC_SIZE will fail.
*/
unsigned long zs_malloc(struct zs_pool *pool, size_t size)
{
unsigned long obj;
struct link_free *link;
struct size_class *class;
void *vaddr;
struct page *first_page, *m_page;
unsigned long m_objidx, m_offset;
if (unlikely(!size || size > ZS_MAX_ALLOC_SIZE))
return 0;
class = pool->size_class[get_size_class_index(size)];
spin_lock(&class->lock);
first_page = find_get_zspage(class);
if (!first_page) {
spin_unlock(&class->lock);
first_page = alloc_zspage(class, pool->flags);
if (unlikely(!first_page))
return 0;
set_zspage_mapping(first_page, class->index, ZS_EMPTY);
atomic_long_add(class->pages_per_zspage,
&pool->pages_allocated);
spin_lock(&class->lock);
}
obj = (unsigned long)first_page->freelist;
obj_handle_to_location(obj, &m_page, &m_objidx);
m_offset = obj_idx_to_offset(m_page, m_objidx, class->size);
vaddr = kmap_atomic(m_page);
link = (struct link_free *)vaddr + m_offset / sizeof(*link);
first_page->freelist = link->next;
memset(link, POISON_INUSE, sizeof(*link));
kunmap_atomic(vaddr);
first_page->inuse++;
/* Now move the zspage to another fullness group, if required */
fix_fullness_group(pool, first_page);
spin_unlock(&class->lock);
return obj;
}
EXPORT_SYMBOL_GPL(zs_malloc);
void zs_free(struct zs_pool *pool, unsigned long obj)
{
struct link_free *link;
struct page *first_page, *f_page;
unsigned long f_objidx, f_offset;
void *vaddr;
int class_idx;
struct size_class *class;
enum fullness_group fullness;
if (unlikely(!obj))
return;
obj_handle_to_location(obj, &f_page, &f_objidx);
first_page = get_first_page(f_page);
get_zspage_mapping(first_page, &class_idx, &fullness);
class = pool->size_class[class_idx];
f_offset = obj_idx_to_offset(f_page, f_objidx, class->size);
spin_lock(&class->lock);
/* Insert this object in containing zspage's freelist */
vaddr = kmap_atomic(f_page);
link = (struct link_free *)(vaddr + f_offset);
link->next = first_page->freelist;
kunmap_atomic(vaddr);
first_page->freelist = (void *)obj;
first_page->inuse--;
fullness = fix_fullness_group(pool, first_page);
spin_unlock(&class->lock);
if (fullness == ZS_EMPTY) {
atomic_long_sub(class->pages_per_zspage,
&pool->pages_allocated);
free_zspage(first_page);
}
}
EXPORT_SYMBOL_GPL(zs_free);
/**
* zs_create_pool - Creates an allocation pool to work from.
* @flags: allocation flags used to allocate pool metadata
@ -1075,201 +1246,30 @@ void zs_destroy_pool(struct zs_pool *pool)
}
EXPORT_SYMBOL_GPL(zs_destroy_pool);
/**
* zs_malloc - Allocate block of given size from pool.
* @pool: pool to allocate from
* @size: size of block to allocate
*
* On success, handle to the allocated object is returned,
* otherwise 0.
* Allocation requests with size > ZS_MAX_ALLOC_SIZE will fail.
*/
unsigned long zs_malloc(struct zs_pool *pool, size_t size)
static int __init zs_init(void)
{
unsigned long obj;
struct link_free *link;
struct size_class *class;
void *vaddr;
int ret = zs_register_cpu_notifier();
struct page *first_page, *m_page;
unsigned long m_objidx, m_offset;
if (unlikely(!size || size > ZS_MAX_ALLOC_SIZE))
return 0;
class = pool->size_class[get_size_class_index(size)];
spin_lock(&class->lock);
first_page = find_get_zspage(class);
if (!first_page) {
spin_unlock(&class->lock);
first_page = alloc_zspage(class, pool->flags);
if (unlikely(!first_page))
return 0;
set_zspage_mapping(first_page, class->index, ZS_EMPTY);
atomic_long_add(class->pages_per_zspage,
&pool->pages_allocated);
spin_lock(&class->lock);
if (ret) {
zs_unregister_cpu_notifier();
return ret;
}
obj = (unsigned long)first_page->freelist;
obj_handle_to_location(obj, &m_page, &m_objidx);
m_offset = obj_idx_to_offset(m_page, m_objidx, class->size);
init_zs_size_classes();
vaddr = kmap_atomic(m_page);
link = (struct link_free *)vaddr + m_offset / sizeof(*link);
first_page->freelist = link->next;
memset(link, POISON_INUSE, sizeof(*link));
kunmap_atomic(vaddr);
first_page->inuse++;
/* Now move the zspage to another fullness group, if required */
fix_fullness_group(pool, first_page);
spin_unlock(&class->lock);
return obj;
#ifdef CONFIG_ZPOOL
zpool_register_driver(&zs_zpool_driver);
#endif
return 0;
}
EXPORT_SYMBOL_GPL(zs_malloc);
void zs_free(struct zs_pool *pool, unsigned long obj)
static void __exit zs_exit(void)
{
struct link_free *link;
struct page *first_page, *f_page;
unsigned long f_objidx, f_offset;
void *vaddr;
int class_idx;
struct size_class *class;
enum fullness_group fullness;
if (unlikely(!obj))
return;
obj_handle_to_location(obj, &f_page, &f_objidx);
first_page = get_first_page(f_page);
get_zspage_mapping(first_page, &class_idx, &fullness);
class = pool->size_class[class_idx];
f_offset = obj_idx_to_offset(f_page, f_objidx, class->size);
spin_lock(&class->lock);
/* Insert this object in containing zspage's freelist */
vaddr = kmap_atomic(f_page);
link = (struct link_free *)(vaddr + f_offset);
link->next = first_page->freelist;
kunmap_atomic(vaddr);
first_page->freelist = (void *)obj;
first_page->inuse--;
fullness = fix_fullness_group(pool, first_page);
spin_unlock(&class->lock);
if (fullness == ZS_EMPTY) {
atomic_long_sub(class->pages_per_zspage,
&pool->pages_allocated);
free_zspage(first_page);
}
#ifdef CONFIG_ZPOOL
zpool_unregister_driver(&zs_zpool_driver);
#endif
zs_unregister_cpu_notifier();
}
EXPORT_SYMBOL_GPL(zs_free);
/**
* zs_map_object - get address of allocated object from handle.
* @pool: pool from which the object was allocated
* @handle: handle returned from zs_malloc
*
* Before using an object allocated from zs_malloc, it must be mapped using
* this function. When done with the object, it must be unmapped using
* zs_unmap_object.
*
* Only one object can be mapped per cpu at a time. There is no protection
* against nested mappings.
*
* This function returns with preemption and page faults disabled.
*/
void *zs_map_object(struct zs_pool *pool, unsigned long handle,
enum zs_mapmode mm)
{
struct page *page;
unsigned long obj_idx, off;
unsigned int class_idx;
enum fullness_group fg;
struct size_class *class;
struct mapping_area *area;
struct page *pages[2];
BUG_ON(!handle);
/*
* Because we use per-cpu mapping areas shared among the
* pools/users, we can't allow mapping in interrupt context
* because it can corrupt another users mappings.
*/
BUG_ON(in_interrupt());
obj_handle_to_location(handle, &page, &obj_idx);
get_zspage_mapping(get_first_page(page), &class_idx, &fg);
class = pool->size_class[class_idx];
off = obj_idx_to_offset(page, obj_idx, class->size);
area = &get_cpu_var(zs_map_area);
area->vm_mm = mm;
if (off + class->size <= PAGE_SIZE) {
/* this object is contained entirely within a page */
area->vm_addr = kmap_atomic(page);
return area->vm_addr + off;
}
/* this object spans two pages */
pages[0] = page;
pages[1] = get_next_page(page);
BUG_ON(!pages[1]);
return __zs_map_object(area, pages, off, class->size);
}
EXPORT_SYMBOL_GPL(zs_map_object);
void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
{
struct page *page;
unsigned long obj_idx, off;
unsigned int class_idx;
enum fullness_group fg;
struct size_class *class;
struct mapping_area *area;
BUG_ON(!handle);
obj_handle_to_location(handle, &page, &obj_idx);
get_zspage_mapping(get_first_page(page), &class_idx, &fg);
class = pool->size_class[class_idx];
off = obj_idx_to_offset(page, obj_idx, class->size);
area = this_cpu_ptr(&zs_map_area);
if (off + class->size <= PAGE_SIZE)
kunmap_atomic(area->vm_addr);
else {
struct page *pages[2];
pages[0] = page;
pages[1] = get_next_page(page);
BUG_ON(!pages[1]);
__zs_unmap_object(area, pages, off, class->size);
}
put_cpu_var(zs_map_area);
}
EXPORT_SYMBOL_GPL(zs_unmap_object);
unsigned long zs_get_total_pages(struct zs_pool *pool)
{
return atomic_long_read(&pool->pages_allocated);
}
EXPORT_SYMBOL_GPL(zs_get_total_pages);
module_init(zs_init);
module_exit(zs_exit);

19
tools/testing/selftests/Makefile
View file

@ -1,22 +1,23 @@
TARGETS = breakpoints
TARGETS += cpu-hotplug
TARGETS += efivarfs
TARGETS += exec
TARGETS += firmware
TARGETS += ftrace
TARGETS += kcmp
TARGETS += memfd
TARGETS += memory-hotplug
TARGETS += mqueue
TARGETS += mount
TARGETS += mqueue
TARGETS += net
TARGETS += ptrace
TARGETS += timers
TARGETS += vm
TARGETS += powerpc
TARGETS += user
TARGETS += sysctl
TARGETS += firmware
TARGETS += ftrace
TARGETS += exec
TARGETS += ptrace
TARGETS += size
TARGETS += sysctl
TARGETS += timers
TARGETS += user
TARGETS += vm
#Please keep the TARGETS list alphabetically sorted
TARGETS_HOTPLUG = cpu-hotplug
TARGETS_HOTPLUG += memory-hotplug