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btrfs: return void in functions without error conditions

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Signed-off-by: Jeff Mahoney <jeffm@suse.com>
This commit is contained in:
Jeff Mahoney 2012-03-01 14:56:26 +01:00 committed by David Sterba
parent ffd7b33944
commit 143bede527
29 changed files with 293 additions and 410 deletions
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15
fs/btrfs/async-thread.c
View file

@ -171,11 +171,11 @@ static void check_pending_worker_creates(struct btrfs_worker_thread *worker)
spin_unlock_irqrestore(&workers->lock, flags);
}
static noinline int run_ordered_completions(struct btrfs_workers *workers,
static noinline void run_ordered_completions(struct btrfs_workers *workers,
struct btrfs_work *work)
{
if (!workers->ordered)
return 0;
return;
set_bit(WORK_DONE_BIT, &work->flags);
@ -213,7 +213,6 @@ static noinline int run_ordered_completions(struct btrfs_workers *workers,
}
spin_unlock(&workers->order_lock);
return 0;
}
static void put_worker(struct btrfs_worker_thread *worker)
@ -399,7 +398,7 @@ static int worker_loop(void *arg)
/*
* this will wait for all the worker threads to shutdown
*/
int btrfs_stop_workers(struct btrfs_workers *workers)
void btrfs_stop_workers(struct btrfs_workers *workers)
{
struct list_head *cur;
struct btrfs_worker_thread *worker;
@ -427,7 +426,6 @@ int btrfs_stop_workers(struct btrfs_workers *workers)
put_worker(worker);
}
spin_unlock_irq(&workers->lock);
return 0;
}
/*
@ -615,14 +613,14 @@ static struct btrfs_worker_thread *find_worker(struct btrfs_workers *workers)
* it was taken from. It is intended for use with long running work functions
* that make some progress and want to give the cpu up for others.
*/
int btrfs_requeue_work(struct btrfs_work *work)
void btrfs_requeue_work(struct btrfs_work *work)
{
struct btrfs_worker_thread *worker = work->worker;
unsigned long flags;
int wake = 0;
if (test_and_set_bit(WORK_QUEUED_BIT, &work->flags))
goto out;
return;
spin_lock_irqsave(&worker->lock, flags);
if (test_bit(WORK_HIGH_PRIO_BIT, &work->flags))
@ -649,9 +647,6 @@ int btrfs_requeue_work(struct btrfs_work *work)
if (wake)
wake_up_process(worker->task);
spin_unlock_irqrestore(&worker->lock, flags);
out:
return 0;
}
void btrfs_set_work_high_prio(struct btrfs_work *work)

4
fs/btrfs/async-thread.h
View file

@ -111,9 +111,9 @@ struct btrfs_workers {
void btrfs_queue_worker(struct btrfs_workers *workers, struct btrfs_work *work);
int btrfs_start_workers(struct btrfs_workers *workers);
int btrfs_stop_workers(struct btrfs_workers *workers);
void btrfs_stop_workers(struct btrfs_workers *workers);
void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max,
struct btrfs_workers *async_starter);
int btrfs_requeue_work(struct btrfs_work *work);
void btrfs_requeue_work(struct btrfs_work *work);
void btrfs_set_work_high_prio(struct btrfs_work *work);
#endif

8
fs/btrfs/compression.c
View file

@ -226,8 +226,8 @@ static void end_compressed_bio_read(struct bio *bio, int err)
* Clear the writeback bits on all of the file
* pages for a compressed write
*/
static noinline int end_compressed_writeback(struct inode *inode, u64 start,
unsigned long ram_size)
static noinline void end_compressed_writeback(struct inode *inode, u64 start,
unsigned long ram_size)
{
unsigned long index = start >> PAGE_CACHE_SHIFT;
unsigned long end_index = (start + ram_size - 1) >> PAGE_CACHE_SHIFT;
@ -253,7 +253,6 @@ static noinline int end_compressed_writeback(struct inode *inode, u64 start,
index += ret;
}
/* the inode may be gone now */
return 0;
}
/*
@ -734,7 +733,7 @@ struct btrfs_compress_op *btrfs_compress_op[] = {
&btrfs_lzo_compress,
};
int __init btrfs_init_compress(void)
void __init btrfs_init_compress(void)
{
int i;
@ -744,7 +743,6 @@ int __init btrfs_init_compress(void)
atomic_set(&comp_alloc_workspace[i], 0);
init_waitqueue_head(&comp_workspace_wait[i]);
}
return 0;
}
/*

2
fs/btrfs/compression.h
View file

@ -19,7 +19,7 @@
#ifndef __BTRFS_COMPRESSION_
#define __BTRFS_COMPRESSION_
int btrfs_init_compress(void);
void btrfs_init_compress(void);
void btrfs_exit_compress(void);
int btrfs_compress_pages(int type, struct address_space *mapping,

200
fs/btrfs/ctree.c
View file

@ -36,7 +36,7 @@ static int balance_node_right(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *dst_buf,
struct extent_buffer *src_buf);
static int del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
static void del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_path *path, int level, int slot);
struct btrfs_path *btrfs_alloc_path(void)
@ -1010,10 +1010,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
if (btrfs_header_nritems(right) == 0) {
clean_tree_block(trans, root, right);
btrfs_tree_unlock(right);
wret = del_ptr(trans, root, path, level + 1, pslot +
1);
if (wret)
ret = wret;
del_ptr(trans, root, path, level + 1, pslot + 1);
root_sub_used(root, right->len);
btrfs_free_tree_block(trans, root, right, 0, 1, 0);
free_extent_buffer(right);
@ -1051,9 +1048,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
if (btrfs_header_nritems(mid) == 0) {
clean_tree_block(trans, root, mid);
btrfs_tree_unlock(mid);
wret = del_ptr(trans, root, path, level + 1, pslot);
if (wret)
ret = wret;
del_ptr(trans, root, path, level + 1, pslot);
root_sub_used(root, mid->len);
btrfs_free_tree_block(trans, root, mid, 0, 1, 0);
free_extent_buffer(mid);
@ -1881,15 +1876,12 @@ int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root
* fixing up pointers when a given leaf/node is not in slot 0 of the
* higher levels
*
* If this fails to write a tree block, it returns -1, but continues
* fixing up the blocks in ram so the tree is consistent.
*/
static int fixup_low_keys(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_disk_key *key, int level)
static void fixup_low_keys(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_disk_key *key, int level)
{
int i;
int ret = 0;
struct extent_buffer *t;
for (i = level; i < BTRFS_MAX_LEVEL; i++) {
@ -1902,7 +1894,6 @@ static int fixup_low_keys(struct btrfs_trans_handle *trans,
if (tslot != 0)
break;
}
return ret;
}
/*
@ -1911,9 +1902,9 @@ static int fixup_low_keys(struct btrfs_trans_handle *trans,
* This function isn't completely safe. It's the caller's responsibility
* that the new key won't break the order
*/
int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *new_key)
void btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *new_key)
{
struct btrfs_disk_key disk_key;
struct extent_buffer *eb;
@ -1923,13 +1914,11 @@ int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
slot = path->slots[0];
if (slot > 0) {
btrfs_item_key(eb, &disk_key, slot - 1);
if (comp_keys(&disk_key, new_key) >= 0)
return -1;
BUG_ON(comp_keys(&disk_key, new_key) >= 0);
}
if (slot < btrfs_header_nritems(eb) - 1) {
btrfs_item_key(eb, &disk_key, slot + 1);
if (comp_keys(&disk_key, new_key) <= 0)
return -1;
BUG_ON(comp_keys(&disk_key, new_key) <= 0);
}
btrfs_cpu_key_to_disk(&disk_key, new_key);
@ -1937,7 +1926,6 @@ int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
btrfs_mark_buffer_dirty(eb);
if (slot == 0)
fixup_low_keys(trans, root, path, &disk_key, 1);
return 0;
}
/*
@ -2140,12 +2128,11 @@ static noinline int insert_new_root(struct btrfs_trans_handle *trans,
*
* slot and level indicate where you want the key to go, and
* blocknr is the block the key points to.
*
* returns zero on success and < 0 on any error
*/
static int insert_ptr(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path, struct btrfs_disk_key
*key, u64 bytenr, int slot, int level)
static void insert_ptr(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_disk_key *key, u64 bytenr,
int slot, int level)
{
struct extent_buffer *lower;
int nritems;
@ -2155,8 +2142,7 @@ static int insert_ptr(struct btrfs_trans_handle *trans, struct btrfs_root
lower = path->nodes[level];
nritems = btrfs_header_nritems(lower);
BUG_ON(slot > nritems);
if (nritems == BTRFS_NODEPTRS_PER_BLOCK(root))
BUG();
BUG_ON(nritems == BTRFS_NODEPTRS_PER_BLOCK(root));
if (slot != nritems) {
memmove_extent_buffer(lower,
btrfs_node_key_ptr_offset(slot + 1),
@ -2169,7 +2155,6 @@ static int insert_ptr(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_set_node_ptr_generation(lower, slot, trans->transid);
btrfs_set_header_nritems(lower, nritems + 1);
btrfs_mark_buffer_dirty(lower);
return 0;
}
/*
@ -2190,7 +2175,6 @@ static noinline int split_node(struct btrfs_trans_handle *trans,
struct btrfs_disk_key disk_key;
int mid;
int ret;
int wret;
u32 c_nritems;
c = path->nodes[level];
@ -2247,11 +2231,8 @@ static noinline int split_node(struct btrfs_trans_handle *trans,
btrfs_mark_buffer_dirty(c);
btrfs_mark_buffer_dirty(split);
wret = insert_ptr(trans, root, path, &disk_key, split->start,
path->slots[level + 1] + 1,
level + 1);
if (wret)
ret = wret;
insert_ptr(trans, root, path, &disk_key, split->start,
path->slots[level + 1] + 1, level + 1);
if (path->slots[level] >= mid) {
path->slots[level] -= mid;
@ -2537,7 +2518,6 @@ static noinline int __push_leaf_left(struct btrfs_trans_handle *trans,
u32 old_left_nritems;
u32 nr;
int ret = 0;
int wret;
u32 this_item_size;
u32 old_left_item_size;
@ -2643,9 +2623,7 @@ static noinline int __push_leaf_left(struct btrfs_trans_handle *trans,
clean_tree_block(trans, root, right);
btrfs_item_key(right, &disk_key, 0);
wret = fixup_low_keys(trans, root, path, &disk_key, 1);
if (wret)
ret = wret;
fixup_low_keys(trans, root, path, &disk_key, 1);
/* then fixup the leaf pointer in the path */
if (path->slots[0] < push_items) {
@ -2738,21 +2716,17 @@ static int push_leaf_left(struct btrfs_trans_handle *trans, struct btrfs_root
/*
* split the path's leaf in two, making sure there is at least data_size
* available for the resulting leaf level of the path.
*
* returns 0 if all went well and < 0 on failure.
*/
static noinline int copy_for_split(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct extent_buffer *l,
struct extent_buffer *right,
int slot, int mid, int nritems)
static noinline void copy_for_split(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct extent_buffer *l,
struct extent_buffer *right,
int slot, int mid, int nritems)
{
int data_copy_size;
int rt_data_off;
int i;
int ret = 0;
int wret;
struct btrfs_disk_key disk_key;
nritems = nritems - mid;
@ -2780,12 +2754,9 @@ static noinline int copy_for_split(struct btrfs_trans_handle *trans,
}
btrfs_set_header_nritems(l, mid);
ret = 0;
btrfs_item_key(right, &disk_key, 0);
wret = insert_ptr(trans, root, path, &disk_key, right->start,
path->slots[1] + 1, 1);
if (wret)
ret = wret;
insert_ptr(trans, root, path, &disk_key, right->start,
path->slots[1] + 1, 1);
btrfs_mark_buffer_dirty(right);
btrfs_mark_buffer_dirty(l);
@ -2803,8 +2774,6 @@ static noinline int copy_for_split(struct btrfs_trans_handle *trans,
}
BUG_ON(path->slots[0] < 0);
return ret;
}
/*
@ -2993,12 +2962,8 @@ static noinline int split_leaf(struct btrfs_trans_handle *trans,
if (split == 0) {
if (mid <= slot) {
btrfs_set_header_nritems(right, 0);
wret = insert_ptr(trans, root, path,
&disk_key, right->start,
path->slots[1] + 1, 1);
if (wret)
ret = wret;
insert_ptr(trans, root, path, &disk_key, right->start,
path->slots[1] + 1, 1);
btrfs_tree_unlock(path->nodes[0]);
free_extent_buffer(path->nodes[0]);
path->nodes[0] = right;
@ -3006,29 +2971,21 @@ static noinline int split_leaf(struct btrfs_trans_handle *trans,
path->slots[1] += 1;
} else {
btrfs_set_header_nritems(right, 0);
wret = insert_ptr(trans, root, path,
&disk_key,
right->start,
insert_ptr(trans, root, path, &disk_key, right->start,
path->slots[1], 1);
if (wret)
ret = wret;
btrfs_tree_unlock(path->nodes[0]);
free_extent_buffer(path->nodes[0]);
path->nodes[0] = right;
path->slots[0] = 0;
if (path->slots[1] == 0) {
wret = fixup_low_keys(trans, root,
path, &disk_key, 1);
if (wret)
ret = wret;
}
if (path->slots[1] == 0)
fixup_low_keys(trans, root, path,
&disk_key, 1);
}
btrfs_mark_buffer_dirty(right);
return ret;
}
ret = copy_for_split(trans, root, path, l, right, slot, mid, nritems);
BUG_ON(ret);
copy_for_split(trans, root, path, l, right, slot, mid, nritems);
if (split == 2) {
BUG_ON(num_doubles != 0);
@ -3036,7 +2993,7 @@ static noinline int split_leaf(struct btrfs_trans_handle *trans,
goto again;
}
return ret;
return 0;
push_for_double:
push_for_double_split(trans, root, path, data_size);
@ -3238,11 +3195,9 @@ int btrfs_duplicate_item(struct btrfs_trans_handle *trans,
return ret;
path->slots[0]++;
ret = setup_items_for_insert(trans, root, path, new_key, &item_size,
item_size, item_size +
sizeof(struct btrfs_item), 1);
BUG_ON(ret);
setup_items_for_insert(trans, root, path, new_key, &item_size,
item_size, item_size +
sizeof(struct btrfs_item), 1);
leaf = path->nodes[0];
memcpy_extent_buffer(leaf,
btrfs_item_ptr_offset(leaf, path->slots[0]),
@ -3257,10 +3212,10 @@ int btrfs_duplicate_item(struct btrfs_trans_handle *trans,
* off the end of the item or if we shift the item to chop bytes off
* the front.
*/
int btrfs_truncate_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
u32 new_size, int from_end)
void btrfs_truncate_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
u32 new_size, int from_end)
{
int slot;
struct extent_buffer *leaf;
@ -3277,7 +3232,7 @@ int btrfs_truncate_item(struct btrfs_trans_handle *trans,
old_size = btrfs_item_size_nr(leaf, slot);
if (old_size == new_size)
return 0;
return;
nritems = btrfs_header_nritems(leaf);
data_end = leaf_data_end(root, leaf);
@ -3350,15 +3305,14 @@ int btrfs_truncate_item(struct btrfs_trans_handle *trans,
btrfs_print_leaf(root, leaf);
BUG();
}
return 0;
}
/*
* make the item pointed to by the path bigger, data_size is the new size.
*/
int btrfs_extend_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
u32 data_size)
void btrfs_extend_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
u32 data_size)
{
int slot;
struct extent_buffer *leaf;
@ -3416,7 +3370,6 @@ int btrfs_extend_item(struct btrfs_trans_handle *trans,
btrfs_print_leaf(root, leaf);
BUG();
}
return 0;
}
/*
@ -3544,7 +3497,7 @@ int btrfs_insert_some_items(struct btrfs_trans_handle *trans,
ret = 0;
if (slot == 0) {
btrfs_cpu_key_to_disk(&disk_key, cpu_key);
ret = fixup_low_keys(trans, root, path, &disk_key, 1);
fixup_low_keys(trans, root, path, &disk_key, 1);
}
if (btrfs_leaf_free_space(root, leaf) < 0) {
@ -3562,17 +3515,16 @@ int btrfs_insert_some_items(struct btrfs_trans_handle *trans,
* to save stack depth by doing the bulk of the work in a function
* that doesn't call btrfs_search_slot
*/
int setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr)
void setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr)
{
struct btrfs_item *item;
int i;
u32 nritems;
unsigned int data_end;
struct btrfs_disk_key disk_key;
int ret;
struct extent_buffer *leaf;
int slot;
@ -3633,10 +3585,9 @@ int setup_items_for_insert(struct btrfs_trans_handle *trans,
btrfs_set_header_nritems(leaf, nritems + nr);
ret = 0;
if (slot == 0) {
btrfs_cpu_key_to_disk(&disk_key, cpu_key);
ret = fixup_low_keys(trans, root, path, &disk_key, 1);
fixup_low_keys(trans, root, path, &disk_key, 1);
}
btrfs_unlock_up_safe(path, 1);
btrfs_mark_buffer_dirty(leaf);
@ -3645,7 +3596,6 @@ int setup_items_for_insert(struct btrfs_trans_handle *trans,
btrfs_print_leaf(root, leaf);
BUG();
}
return ret;
}
/*
@ -3672,16 +3622,14 @@ int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
if (ret == 0)
return -EEXIST;
if (ret < 0)
goto out;
return ret;
slot = path->slots[0];
BUG_ON(slot < 0);
ret = setup_items_for_insert(trans, root, path, cpu_key, data_size,
setup_items_for_insert(trans, root, path, cpu_key, data_size,
total_data, total_size, nr);
out:
return ret;
return 0;
}
/*
@ -3717,13 +3665,11 @@ int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
* the tree should have been previously balanced so the deletion does not
* empty a node.
*/
static int del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_path *path, int level, int slot)
static void del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_path *path, int level, int slot)
{
struct extent_buffer *parent = path->nodes[level];
u32 nritems;
int ret = 0;
int wret;
nritems = btrfs_header_nritems(parent);
if (slot != nritems - 1) {
@ -3743,12 +3689,9 @@ static int del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_disk_key disk_key;
btrfs_node_key(parent, &disk_key, 0);
wret = fixup_low_keys(trans, root, path, &disk_key, level + 1);
if (wret)
ret = wret;
fixup_low_keys(trans, root, path, &disk_key, level + 1);
}
btrfs_mark_buffer_dirty(parent);
return ret;
}
/*
@ -3761,17 +3704,13 @@ static int del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
* The path must have already been setup for deleting the leaf, including
* all the proper balancing. path->nodes[1] must be locked.
*/
static noinline int btrfs_del_leaf(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct extent_buffer *leaf)
static noinline void btrfs_del_leaf(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct extent_buffer *leaf)
{
int ret;
WARN_ON(btrfs_header_generation(leaf) != trans->transid);
ret = del_ptr(trans, root, path, 1, path->slots[1]);
if (ret)
return ret;
del_ptr(trans, root, path, 1, path->slots[1]);
/*
* btrfs_free_extent is expensive, we want to make sure we
@ -3782,7 +3721,6 @@ static noinline int btrfs_del_leaf(struct btrfs_trans_handle *trans,
root_sub_used(root, leaf->len);
btrfs_free_tree_block(trans, root, leaf, 0, 1, 0);
return 0;
}
/*
* delete the item at the leaf level in path. If that empties
@ -3839,8 +3777,7 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
} else {
btrfs_set_path_blocking(path);
clean_tree_block(trans, root, leaf);
ret = btrfs_del_leaf(trans, root, path, leaf);
BUG_ON(ret);
btrfs_del_leaf(trans, root, path, leaf);
}
} else {
int used = leaf_space_used(leaf, 0, nritems);
@ -3848,10 +3785,7 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_disk_key disk_key;
btrfs_item_key(leaf, &disk_key, 0);
wret = fixup_low_keys(trans, root, path,
&disk_key, 1);
if (wret)
ret = wret;
fixup_low_keys(trans, root, path, &disk_key, 1);
}
/* delete the leaf if it is mostly empty */
@ -3879,9 +3813,9 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
if (btrfs_header_nritems(leaf) == 0) {
path->slots[1] = slot;
ret = btrfs_del_leaf(trans, root, path, leaf);
BUG_ON(ret);
btrfs_del_leaf(trans, root, path, leaf);
free_extent_buffer(leaf);
ret = 0;
} else {
/* if we're still in the path, make sure
* we're dirty. Otherwise, one of the

45
fs/btrfs/ctree.h
View file

@ -2485,8 +2485,8 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans,
int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len);
int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root,
u64 start, u64 len);
int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
@ -2549,8 +2549,8 @@ void btrfs_block_rsv_release(struct btrfs_root *root,
u64 num_bytes);
int btrfs_set_block_group_ro(struct btrfs_root *root,
struct btrfs_block_group_cache *cache);
int btrfs_set_block_group_rw(struct btrfs_root *root,
struct btrfs_block_group_cache *cache);
void btrfs_set_block_group_rw(struct btrfs_root *root,
struct btrfs_block_group_cache *cache);
void btrfs_put_block_group_cache(struct btrfs_fs_info *info);
u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
int btrfs_error_unpin_extent_range(struct btrfs_root *root,
@ -2569,9 +2569,9 @@ int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2);
int btrfs_previous_item(struct btrfs_root *root,
struct btrfs_path *path, u64 min_objectid,
int type);
int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *new_key);
void btrfs_set_item_key_safe(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *new_key);
struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
@ -2591,12 +2591,13 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
struct extent_buffer **cow_ret, u64 new_root_objectid);
int btrfs_block_can_be_shared(struct btrfs_root *root,
struct extent_buffer *buf);
int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path, u32 data_size);
int btrfs_truncate_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
u32 new_size, int from_end);
void btrfs_extend_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
u32 data_size);
void btrfs_truncate_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
u32 new_size, int from_end);
int btrfs_split_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
@ -2630,10 +2631,10 @@ static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
return btrfs_del_items(trans, root, path, path->slots[0], 1);
}
int setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr);
void setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr);
int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, void *data, u32 data_size);
int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
@ -2911,7 +2912,7 @@ int btrfs_orphan_cleanup(struct btrfs_root *root);
void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size);
int btrfs_invalidate_inodes(struct btrfs_root *root);
void btrfs_invalidate_inodes(struct btrfs_root *root);
void btrfs_add_delayed_iput(struct inode *inode);
void btrfs_run_delayed_iputs(struct btrfs_root *root);
int btrfs_prealloc_file_range(struct inode *inode, int mode,
@ -3021,10 +3022,10 @@ void btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
/* scrub.c */
int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end,
struct btrfs_scrub_progress *progress, int readonly);
int btrfs_scrub_pause(struct btrfs_root *root);
int btrfs_scrub_pause_super(struct btrfs_root *root);
int btrfs_scrub_continue(struct btrfs_root *root);
int btrfs_scrub_continue_super(struct btrfs_root *root);
void btrfs_scrub_pause(struct btrfs_root *root);
void btrfs_scrub_pause_super(struct btrfs_root *root);
void btrfs_scrub_continue(struct btrfs_root *root);
void btrfs_scrub_continue_super(struct btrfs_root *root);
int btrfs_scrub_cancel(struct btrfs_root *root);
int btrfs_scrub_cancel_dev(struct btrfs_root *root, struct btrfs_device *dev);
int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid);

6
fs/btrfs/delayed-inode.c
View file

@ -836,10 +836,8 @@ static int btrfs_batch_insert_items(struct btrfs_trans_handle *trans,
btrfs_clear_path_blocking(path, NULL, 0);
/* insert the keys of the items */
ret = setup_items_for_insert(trans, root, path, keys, data_size,
total_data_size, total_size, nitems);
if (ret)
goto error;
setup_items_for_insert(trans, root, path, keys, data_size,
total_data_size, total_size, nitems);
/* insert the dir index items */
slot = path->slots[0];

27
fs/btrfs/delayed-ref.c
View file

@ -420,7 +420,7 @@ update_existing_head_ref(struct btrfs_delayed_ref_node *existing,
* this does all the dirty work in terms of maintaining the correct
* overall modification count.
*/
static noinline int add_delayed_ref_head(struct btrfs_fs_info *fs_info,
static noinline void add_delayed_ref_head(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
struct btrfs_delayed_ref_node *ref,
u64 bytenr, u64 num_bytes,
@ -494,13 +494,12 @@ static noinline int add_delayed_ref_head(struct btrfs_fs_info *fs_info,
delayed_refs->num_entries++;
trans->delayed_ref_updates++;
}
return 0;
}
/*
* helper to insert a delayed tree ref into the rbtree.
*/
static noinline int add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
static noinline void add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
struct btrfs_delayed_ref_node *ref,
u64 bytenr, u64 num_bytes, u64 parent,
@ -554,13 +553,12 @@ static noinline int add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
delayed_refs->num_entries++;
trans->delayed_ref_updates++;
}
return 0;
}
/*
* helper to insert a delayed data ref into the rbtree.
*/
static noinline int add_delayed_data_ref(struct btrfs_fs_info *fs_info,
static noinline void add_delayed_data_ref(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
struct btrfs_delayed_ref_node *ref,
u64 bytenr, u64 num_bytes, u64 parent,
@ -616,7 +614,6 @@ static noinline int add_delayed_data_ref(struct btrfs_fs_info *fs_info,
delayed_refs->num_entries++;
trans->delayed_ref_updates++;
}
return 0;
}
/*
@ -634,7 +631,6 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
struct btrfs_delayed_tree_ref *ref;
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
int ret;
BUG_ON(extent_op && extent_op->is_data);
ref = kmalloc(sizeof(*ref), GFP_NOFS);
@ -656,14 +652,12 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info,
* insert both the head node and the new ref without dropping
* the spin lock
*/
ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
num_bytes, action, 0);
BUG_ON(ret);
ret = add_delayed_tree_ref(fs_info, trans, &ref->node, bytenr,
add_delayed_tree_ref(fs_info, trans, &ref->node, bytenr,
num_bytes, parent, ref_root, level, action,
for_cow);
BUG_ON(ret);
if (!need_ref_seq(for_cow, ref_root) &&
waitqueue_active(&delayed_refs->seq_wait))
wake_up(&delayed_refs->seq_wait);
@ -685,7 +679,6 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
struct btrfs_delayed_data_ref *ref;
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
int ret;
BUG_ON(extent_op && !extent_op->is_data);
ref = kmalloc(sizeof(*ref), GFP_NOFS);
@ -707,14 +700,12 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
* insert both the head node and the new ref without dropping
* the spin lock
*/
ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
num_bytes, action, 1);
BUG_ON(ret);
ret = add_delayed_data_ref(fs_info, trans, &ref->node, bytenr,
add_delayed_data_ref(fs_info, trans, &ref->node, bytenr,
num_bytes, parent, ref_root, owner, offset,
action, for_cow);
BUG_ON(ret);
if (!need_ref_seq(for_cow, ref_root) &&
waitqueue_active(&delayed_refs->seq_wait))
wake_up(&delayed_refs->seq_wait);
@ -729,7 +720,6 @@ int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info,
{
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
int ret;
head_ref = kmalloc(sizeof(*head_ref), GFP_NOFS);
if (!head_ref)
@ -740,10 +730,9 @@ int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info,
delayed_refs = &trans->transaction->delayed_refs;
spin_lock(&delayed_refs->lock);
ret = add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,
num_bytes, BTRFS_UPDATE_DELAYED_HEAD,
extent_op->is_data);
BUG_ON(ret);
if (waitqueue_active(&delayed_refs->seq_wait))
wake_up(&delayed_refs->seq_wait);

9
fs/btrfs/dir-item.c
View file

@ -49,9 +49,8 @@ static struct btrfs_dir_item *insert_with_overflow(struct btrfs_trans_handle
di = btrfs_match_dir_item_name(root, path, name, name_len);
if (di)
return ERR_PTR(-EEXIST);
ret = btrfs_extend_item(trans, root, path, data_size);
}
if (ret < 0)
btrfs_extend_item(trans, root, path, data_size);
} else if (ret < 0)
return ERR_PTR(ret);
WARN_ON(ret > 0);
leaf = path->nodes[0];
@ -383,8 +382,8 @@ int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
start = btrfs_item_ptr_offset(leaf, path->slots[0]);
memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
item_len - (ptr + sub_item_len - start));
ret = btrfs_truncate_item(trans, root, path,
item_len - sub_item_len, 1);
btrfs_truncate_item(trans, root, path,
item_len - sub_item_len, 1);
}
return ret;
}

39
fs/btrfs/disk-io.c
View file

@ -50,12 +50,12 @@ static void end_workqueue_fn(struct btrfs_work *work);
static void free_fs_root(struct btrfs_root *root);
static void btrfs_check_super_valid(struct btrfs_fs_info *fs_info,
int read_only);
static int btrfs_destroy_ordered_operations(struct btrfs_root *root);
static int btrfs_destroy_ordered_extents(struct btrfs_root *root);
static void btrfs_destroy_ordered_operations(struct btrfs_root *root);
static void btrfs_destroy_ordered_extents(struct btrfs_root *root);
static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
struct btrfs_root *root);
static int btrfs_destroy_pending_snapshots(struct btrfs_transaction *t);
static int btrfs_destroy_delalloc_inodes(struct btrfs_root *root);
static void btrfs_destroy_pending_snapshots(struct btrfs_transaction *t);
static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root);
static int btrfs_destroy_marked_extents(struct btrfs_root *root,
struct extent_io_tree *dirty_pages,
int mark);
@ -1139,10 +1139,10 @@ void clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
}
}
static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
u32 stripesize, struct btrfs_root *root,
struct btrfs_fs_info *fs_info,
u64 objectid)
static void __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
u32 stripesize, struct btrfs_root *root,
struct btrfs_fs_info *fs_info,
u64 objectid)
{
root->node = NULL;
root->commit_root = NULL;
@ -1194,7 +1194,6 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
root->defrag_running = 0;
root->root_key.objectid = objectid;
root->anon_dev = 0;
return 0;
}
static int __must_check find_and_setup_root(struct btrfs_root *tree_root,
@ -2897,7 +2896,7 @@ int write_ctree_super(struct btrfs_trans_handle *trans,
return ret;
}
int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
{
spin_lock(&fs_info->fs_roots_radix_lock);
radix_tree_delete(&fs_info->fs_roots_radix,
@ -2910,7 +2909,6 @@ int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
__btrfs_remove_free_space_cache(root->free_ino_pinned);
__btrfs_remove_free_space_cache(root->free_ino_ctl);
free_fs_root(root);
return 0;
}
static void free_fs_root(struct btrfs_root *root)
@ -2927,7 +2925,7 @@ static void free_fs_root(struct btrfs_root *root)
kfree(root);
}
static int del_fs_roots(struct btrfs_fs_info *fs_info)
static void del_fs_roots(struct btrfs_fs_info *fs_info)
{
int ret;
struct btrfs_root *gang[8];
@ -2956,7 +2954,6 @@ static int del_fs_roots(struct btrfs_fs_info *fs_info)
for (i = 0; i < ret; i++)
btrfs_free_fs_root(fs_info, gang[i]);
}
return 0;
}
int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info)
@ -3299,7 +3296,7 @@ int btrfs_error_commit_super(struct btrfs_root *root)
return ret;
}
static int btrfs_destroy_ordered_operations(struct btrfs_root *root)
static void btrfs_destroy_ordered_operations(struct btrfs_root *root)
{
struct btrfs_inode *btrfs_inode;
struct list_head splice;
@ -3321,11 +3318,9 @@ static int btrfs_destroy_ordered_operations(struct btrfs_root *root)
spin_unlock(&root->fs_info->ordered_extent_lock);
mutex_unlock(&root->fs_info->ordered_operations_mutex);
return 0;
}
static int btrfs_destroy_ordered_extents(struct btrfs_root *root)
static void btrfs_destroy_ordered_extents(struct btrfs_root *root)
{
struct list_head splice;
struct btrfs_ordered_extent *ordered;
@ -3357,8 +3352,6 @@ static int btrfs_destroy_ordered_extents(struct btrfs_root *root)
}
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}
static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
@ -3413,7 +3406,7 @@ static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
return ret;
}
static int btrfs_destroy_pending_snapshots(struct btrfs_transaction *t)
static void btrfs_destroy_pending_snapshots(struct btrfs_transaction *t)
{
struct btrfs_pending_snapshot *snapshot;
struct list_head splice;
@ -3431,11 +3424,9 @@ static int btrfs_destroy_pending_snapshots(struct btrfs_transaction *t)
kfree(snapshot);
}
return 0;
}
static int btrfs_destroy_delalloc_inodes(struct btrfs_root *root)
static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root)
{
struct btrfs_inode *btrfs_inode;
struct list_head splice;
@ -3455,8 +3446,6 @@ static int btrfs_destroy_delalloc_inodes(struct btrfs_root *root)
}
spin_unlock(&root->fs_info->delalloc_lock);
return 0;
}
static int btrfs_destroy_marked_extents(struct btrfs_root *root,

2
fs/btrfs/disk-io.h
View file

@ -64,7 +64,7 @@ struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info);
void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid);
int btrfs_set_buffer_uptodate(struct extent_buffer *buf);

60
fs/btrfs/extent-tree.c
View file

@ -1010,7 +1010,7 @@ static int convert_extent_item_v0(struct btrfs_trans_handle *trans,
return ret;
BUG_ON(ret);
ret = btrfs_extend_item(trans, root, path, new_size);
btrfs_extend_item(trans, root, path, new_size);
leaf = path->nodes[0];
item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
@ -1592,13 +1592,13 @@ int lookup_inline_extent_backref(struct btrfs_trans_handle *trans,
* helper to add new inline back ref
*/
static noinline_for_stack
int setup_inline_extent_backref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_extent_inline_ref *iref,
u64 parent, u64 root_objectid,
u64 owner, u64 offset, int refs_to_add,
struct btrfs_delayed_extent_op *extent_op)
void setup_inline_extent_backref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_extent_inline_ref *iref,
u64 parent, u64 root_objectid,
u64 owner, u64 offset, int refs_to_add,
struct btrfs_delayed_extent_op *extent_op)
{
struct extent_buffer *leaf;
struct btrfs_extent_item *ei;
@ -1608,7 +1608,6 @@ int setup_inline_extent_backref(struct btrfs_trans_handle *trans,
u64 refs;
int size;
int type;
int ret;
leaf = path->nodes[0];
ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
@ -1617,7 +1616,7 @@ int setup_inline_extent_backref(struct btrfs_trans_handle *trans,
type = extent_ref_type(parent, owner);
size = btrfs_extent_inline_ref_size(type);
ret = btrfs_extend_item(trans, root, path, size);
btrfs_extend_item(trans, root, path, size);
ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
refs = btrfs_extent_refs(leaf, ei);
@ -1652,7 +1651,6 @@ int setup_inline_extent_backref(struct btrfs_trans_handle *trans,
btrfs_set_extent_inline_ref_offset(leaf, iref, root_objectid);
}
btrfs_mark_buffer_dirty(leaf);
return 0;
}
static int lookup_extent_backref(struct btrfs_trans_handle *trans,
@ -1687,12 +1685,12 @@ static int lookup_extent_backref(struct btrfs_trans_handle *trans,
* helper to update/remove inline back ref
*/
static noinline_for_stack
int update_inline_extent_backref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_extent_inline_ref *iref,
int refs_to_mod,
struct btrfs_delayed_extent_op *extent_op)
void update_inline_extent_backref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_extent_inline_ref *iref,
int refs_to_mod,
struct btrfs_delayed_extent_op *extent_op)
{
struct extent_buffer *leaf;
struct btrfs_extent_item *ei;
@ -1703,7 +1701,6 @@ int update_inline_extent_backref(struct btrfs_trans_handle *trans,
u32 item_size;
int size;
int type;
int ret;
u64 refs;
leaf = path->nodes[0];
@ -1745,10 +1742,9 @@ int update_inline_extent_backref(struct btrfs_trans_handle *trans,
memmove_extent_buffer(leaf, ptr, ptr + size,
end - ptr - size);
item_size -= size;
ret = btrfs_truncate_item(trans, root, path, item_size, 1);
btrfs_truncate_item(trans, root, path, item_size, 1);
}
btrfs_mark_buffer_dirty(leaf);
return 0;
}
static noinline_for_stack
@ -1768,13 +1764,13 @@ int insert_inline_extent_backref(struct btrfs_trans_handle *trans,
root_objectid, owner, offset, 1);
if (ret == 0) {
BUG_ON(owner < BTRFS_FIRST_FREE_OBJECTID);
ret = update_inline_extent_backref(trans, root, path, iref,
refs_to_add, extent_op);
update_inline_extent_backref(trans, root, path, iref,
refs_to_add, extent_op);
} else if (ret == -ENOENT) {
ret = setup_inline_extent_backref(trans, root, path, iref,
parent, root_objectid,
owner, offset, refs_to_add,
extent_op);
setup_inline_extent_backref(trans, root, path, iref, parent,
root_objectid, owner, offset,
refs_to_add, extent_op);
ret = 0;
}
return ret;
}
@ -1804,12 +1800,12 @@ static int remove_extent_backref(struct btrfs_trans_handle *trans,
struct btrfs_extent_inline_ref *iref,
int refs_to_drop, int is_data)
{
int ret;
int ret = 0;
BUG_ON(!is_data && refs_to_drop != 1);
if (iref) {
ret = update_inline_extent_backref(trans, root, path, iref,
-refs_to_drop, NULL);
update_inline_extent_backref(trans, root, path, iref,
-refs_to_drop, NULL);
} else if (is_data) {
ret = remove_extent_data_ref(trans, root, path, refs_to_drop);
} else {
@ -4734,7 +4730,7 @@ static int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache,
return ret;
}
int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
struct btrfs_fs_info *fs_info = root->fs_info;
@ -4764,7 +4760,6 @@ int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans,
up_write(&fs_info->extent_commit_sem);
update_global_block_rsv(fs_info);
return 0;
}
static int unpin_extent_range(struct btrfs_root *root, u64 start, u64 end)
@ -7189,7 +7184,7 @@ u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo)
return free_bytes;
}
int btrfs_set_block_group_rw(struct btrfs_root *root,
void btrfs_set_block_group_rw(struct btrfs_root *root,
struct btrfs_block_group_cache *cache)
{
struct btrfs_space_info *sinfo = cache->space_info;
@ -7205,7 +7200,6 @@ int btrfs_set_block_group_rw(struct btrfs_root *root,
cache->ro = 0;
spin_unlock(&cache->lock);
spin_unlock(&sinfo->lock);
return 0;
}
/*

35
fs/btrfs/extent_io.c
View file

@ -142,6 +142,7 @@ static struct extent_state *alloc_extent_state(gfp_t mask)
#endif
atomic_set(&state->refs, 1);
init_waitqueue_head(&state->wq);
trace_alloc_extent_state(state, mask, _RET_IP_);
return state;
}
@ -159,6 +160,7 @@ void free_extent_state(struct extent_state *state)
list_del(&state->leak_list);
spin_unlock_irqrestore(&leak_lock, flags);
#endif
trace_free_extent_state(state, _RET_IP_);
kmem_cache_free(extent_state_cache, state);
}
}
@ -617,8 +619,8 @@ int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
goto again;
}
static int wait_on_state(struct extent_io_tree *tree,
struct extent_state *state)
static void wait_on_state(struct extent_io_tree *tree,
struct extent_state *state)
__releases(tree->lock)
__acquires(tree->lock)
{
@ -628,7 +630,6 @@ static int wait_on_state(struct extent_io_tree *tree,
schedule();
spin_lock(&tree->lock);
finish_wait(&state->wq, &wait);
return 0;
}
/*
@ -636,7 +637,7 @@ static int wait_on_state(struct extent_io_tree *tree,
* The range [start, end] is inclusive.
* The tree lock is taken by this function
*/
int wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits)
void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits)
{
struct extent_state *state;
struct rb_node *node;
@ -673,7 +674,6 @@ int wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits)
}
out:
spin_unlock(&tree->lock);
return 0;
}
static void set_state_bits(struct extent_io_tree *tree,
@ -1359,9 +1359,9 @@ static noinline u64 find_delalloc_range(struct extent_io_tree *tree,
return found;
}
static noinline int __unlock_for_delalloc(struct inode *inode,
struct page *locked_page,
u64 start, u64 end)
static noinline void __unlock_for_delalloc(struct inode *inode,
struct page *locked_page,
u64 start, u64 end)
{
int ret;
struct page *pages[16];
@ -1371,7 +1371,7 @@ static noinline int __unlock_for_delalloc(struct inode *inode,
int i;
if (index == locked_page->index && end_index == index)
return 0;
return;
while (nr_pages > 0) {
ret = find_get_pages_contig(inode->i_mapping, index,
@ -1386,7 +1386,6 @@ static noinline int __unlock_for_delalloc(struct inode *inode,
index += ret;
cond_resched();
}
return 0;
}
static noinline int lock_delalloc_pages(struct inode *inode,
@ -1777,39 +1776,34 @@ int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
* helper function to set a given page up to date if all the
* extents in the tree for that page are up to date
*/
static int check_page_uptodate(struct extent_io_tree *tree,
struct page *page)
static void check_page_uptodate(struct extent_io_tree *tree, struct page *page)
{
u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
u64 end = start + PAGE_CACHE_SIZE - 1;
if (test_range_bit(tree, start, end, EXTENT_UPTODATE, 1, NULL))
SetPageUptodate(page);
return 0;
}
/*
* helper function to unlock a page if all the extents in the tree
* for that page are unlocked
*/
static int check_page_locked(struct extent_io_tree *tree,
struct page *page)
static void check_page_locked(struct extent_io_tree *tree, struct page *page)
{
u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
u64 end = start + PAGE_CACHE_SIZE - 1;
if (!test_range_bit(tree, start, end, EXTENT_LOCKED, 0, NULL))
unlock_page(page);
return 0;
}
/*
* helper function to end page writeback if all the extents
* in the tree for that page are done with writeback
*/
static int check_page_writeback(struct extent_io_tree *tree,
struct page *page)
static void check_page_writeback(struct extent_io_tree *tree,
struct page *page)
{
end_page_writeback(page);
return 0;
}
/*
@ -3835,7 +3829,7 @@ void free_extent_buffer(struct extent_buffer *eb)
WARN_ON(1);
}
int clear_extent_buffer_dirty(struct extent_io_tree *tree,
void clear_extent_buffer_dirty(struct extent_io_tree *tree,
struct extent_buffer *eb)
{
unsigned long i;
@ -3867,7 +3861,6 @@ int clear_extent_buffer_dirty(struct extent_io_tree *tree,
ClearPageError(page);
unlock_page(page);
}
return 0;
}
int set_extent_buffer_dirty(struct extent_io_tree *tree,

4
fs/btrfs/extent_io.h
View file

@ -287,8 +287,8 @@ void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
unsigned long src_offset, unsigned long len);
void memset_extent_buffer(struct extent_buffer *eb, char c,
unsigned long start, unsigned long len);
int wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits);
int clear_extent_buffer_dirty(struct extent_io_tree *tree,
void wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits);
void clear_extent_buffer_dirty(struct extent_io_tree *tree,
struct extent_buffer *eb);
int set_extent_buffer_dirty(struct extent_io_tree *tree,
struct extent_buffer *eb);

25
fs/btrfs/file-item.c
View file

@ -483,18 +483,17 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
* This calls btrfs_truncate_item with the correct args based on the
* overlap, and fixes up the key as required.
*/
static noinline int truncate_one_csum(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_key *key,
u64 bytenr, u64 len)
static noinline void truncate_one_csum(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_path *path,
struct btrfs_key *key,
u64 bytenr, u64 len)
{
struct extent_buffer *leaf;
u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
u64 csum_end;
u64 end_byte = bytenr + len;
u32 blocksize_bits = root->fs_info->sb->s_blocksize_bits;
int ret;
leaf = path->nodes[0];
csum_end = btrfs_item_size_nr(leaf, path->slots[0]) / csum_size;
@ -510,7 +509,7 @@ static noinline int truncate_one_csum(struct btrfs_trans_handle *trans,
*/
u32 new_size = (bytenr - key->offset) >> blocksize_bits;
new_size *= csum_size;
ret = btrfs_truncate_item(trans, root, path, new_size, 1);
btrfs_truncate_item(trans, root, path, new_size, 1);
} else if (key->offset >= bytenr && csum_end > end_byte &&
end_byte > key->offset) {
/*
@ -522,15 +521,13 @@ static noinline int truncate_one_csum(struct btrfs_trans_handle *trans,
u32 new_size = (csum_end - end_byte) >> blocksize_bits;
new_size *= csum_size;
ret = btrfs_truncate_item(trans, root, path, new_size, 0);
btrfs_truncate_item(trans, root, path, new_size, 0);
key->offset = end_byte;
ret = btrfs_set_item_key_safe(trans, root, path, key);
BUG_ON(ret);
btrfs_set_item_key_safe(trans, root, path, key);
} else {
BUG();
}
return 0;
}
/*
@ -639,9 +636,7 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans,
key.offset = end_byte - 1;
} else {
ret = truncate_one_csum(trans, root, path,
&key, bytenr, len);
BUG_ON(ret);
truncate_one_csum(trans, root, path, &key, bytenr, len);
if (key.offset < bytenr)
break;
}
@ -772,7 +767,7 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
if (diff != csum_size)
goto insert;
ret = btrfs_extend_item(trans, root, path, diff);
btrfs_extend_item(trans, root, path, diff);
goto csum;
}

4
fs/btrfs/inode-item.c
View file

@ -128,7 +128,7 @@ int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
item_start = btrfs_item_ptr_offset(leaf, path->slots[0]);
memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
item_size - (ptr + sub_item_len - item_start));
ret = btrfs_truncate_item(trans, root, path,
btrfs_truncate_item(trans, root, path,
item_size - sub_item_len, 1);
out:
btrfs_free_path(path);
@ -165,7 +165,7 @@ int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
goto out;
old_size = btrfs_item_size_nr(path->nodes[0], path->slots[0]);
ret = btrfs_extend_item(trans, root, path, ins_len);
btrfs_extend_item(trans, root, path, ins_len);
ref = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_ref);
ref = (struct btrfs_inode_ref *)((unsigned long)ref + old_size);

7
fs/btrfs/inode.c
View file

@ -3164,8 +3164,8 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
}
size =
btrfs_file_extent_calc_inline_size(size);
ret = btrfs_truncate_item(trans, root, path,
size, 1);
btrfs_truncate_item(trans, root, path,
size, 1);
} else if (root->ref_cows) {
inode_sub_bytes(inode, item_end + 1 -
found_key.offset);
@ -3782,7 +3782,7 @@ static void inode_tree_del(struct inode *inode)
}
}
int btrfs_invalidate_inodes(struct btrfs_root *root)
void btrfs_invalidate_inodes(struct btrfs_root *root)
{
struct rb_node *node;
struct rb_node *prev;
@ -3842,7 +3842,6 @@ int btrfs_invalidate_inodes(struct btrfs_root *root)
node = rb_next(node);
}
spin_unlock(&root->inode_lock);
return 0;
}
static int btrfs_init_locked_inode(struct inode *inode, void *p)

6
fs/btrfs/locking.c
View file

@ -208,7 +208,7 @@ void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb)
* take a spinning write lock. This will wait for both
* blocking readers or writers
*/
int btrfs_tree_lock(struct extent_buffer *eb)
void btrfs_tree_lock(struct extent_buffer *eb)
{
again:
wait_event(eb->read_lock_wq, atomic_read(&eb->blocking_readers) == 0);
@ -230,13 +230,12 @@ int btrfs_tree_lock(struct extent_buffer *eb)
atomic_inc(&eb->spinning_writers);
atomic_inc(&eb->write_locks);
eb->lock_owner = current->pid;
return 0;
}
/*
* drop a spinning or a blocking write lock.
*/
int btrfs_tree_unlock(struct extent_buffer *eb)
void btrfs_tree_unlock(struct extent_buffer *eb)
{
int blockers = atomic_read(&eb->blocking_writers);
@ -255,7 +254,6 @@ int btrfs_tree_unlock(struct extent_buffer *eb)
atomic_dec(&eb->spinning_writers);
write_unlock(&eb->lock);
}
return 0;
}
void btrfs_assert_tree_locked(struct extent_buffer *eb)

4
fs/btrfs/locking.h
View file

@ -24,8 +24,8 @@
#define BTRFS_WRITE_LOCK_BLOCKING 3
#define BTRFS_READ_LOCK_BLOCKING 4
int btrfs_tree_lock(struct extent_buffer *eb);
int btrfs_tree_unlock(struct extent_buffer *eb);
void btrfs_tree_lock(struct extent_buffer *eb);
void btrfs_tree_unlock(struct extent_buffer *eb);
int btrfs_try_spin_lock(struct extent_buffer *eb);
void btrfs_tree_read_lock(struct extent_buffer *eb);

48
fs/btrfs/ordered-data.c
View file

@ -257,9 +257,9 @@ int btrfs_add_ordered_extent_compress(struct inode *inode, u64 file_offset,
* when an ordered extent is finished. If the list covers more than one
* ordered extent, it is split across multiples.
*/
int btrfs_add_ordered_sum(struct inode *inode,
struct btrfs_ordered_extent *entry,
struct btrfs_ordered_sum *sum)
void btrfs_add_ordered_sum(struct inode *inode,
struct btrfs_ordered_extent *entry,
struct btrfs_ordered_sum *sum)
{
struct btrfs_ordered_inode_tree *tree;
@ -267,7 +267,6 @@ int btrfs_add_ordered_sum(struct inode *inode,
spin_lock(&tree->lock);
list_add_tail(&sum->list, &entry->list);
spin_unlock(&tree->lock);
return 0;
}
/*
@ -392,7 +391,7 @@ int btrfs_dec_test_ordered_pending(struct inode *inode,
* used to drop a reference on an ordered extent. This will free
* the extent if the last reference is dropped
*/
int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
{
struct list_head *cur;
struct btrfs_ordered_sum *sum;
@ -408,7 +407,6 @@ int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
}
kfree(entry);
}
return 0;
}
/*
@ -416,8 +414,8 @@ int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry)
* and you must wake_up entry->wait. You must hold the tree lock
* while you call this function.
*/
static int __btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
static void __btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
{
struct btrfs_ordered_inode_tree *tree;
struct btrfs_root *root = BTRFS_I(inode)->root;
@ -444,35 +442,30 @@ static int __btrfs_remove_ordered_extent(struct inode *inode,
list_del_init(&BTRFS_I(inode)->ordered_operations);
}
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}
/*
* remove an ordered extent from the tree. No references are dropped
* but any waiters are woken.
*/
int btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
void btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry)
{
struct btrfs_ordered_inode_tree *tree;
int ret;
tree = &BTRFS_I(inode)->ordered_tree;
spin_lock(&tree->lock);
ret = __btrfs_remove_ordered_extent(inode, entry);
__btrfs_remove_ordered_extent(inode, entry);
spin_unlock(&tree->lock);
wake_up(&entry->wait);
return ret;
}
/*
* wait for all the ordered extents in a root. This is done when balancing
* space between drives.
*/
int btrfs_wait_ordered_extents(struct btrfs_root *root,
int nocow_only, int delay_iput)
void btrfs_wait_ordered_extents(struct btrfs_root *root,
int nocow_only, int delay_iput)
{
struct list_head splice;
struct list_head *cur;
@ -520,7 +513,6 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root,
spin_lock(&root->fs_info->ordered_extent_lock);
}
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}
/*
@ -533,7 +525,7 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root,
* extra check to make sure the ordered operation list really is empty
* before we return
*/
int btrfs_run_ordered_operations(struct btrfs_root *root, int wait)
void btrfs_run_ordered_operations(struct btrfs_root *root, int wait)
{
struct btrfs_inode *btrfs_inode;
struct inode *inode;
@ -581,8 +573,6 @@ int btrfs_run_ordered_operations(struct btrfs_root *root, int wait)
spin_unlock(&root->fs_info->ordered_extent_lock);
mutex_unlock(&root->fs_info->ordered_operations_mutex);
return 0;
}
/*
@ -617,7 +607,7 @@ void btrfs_start_ordered_extent(struct inode *inode,
/*
* Used to wait on ordered extents across a large range of bytes.
*/
int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
void btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
{
u64 end;
u64 orig_end;
@ -672,7 +662,6 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
schedule_timeout(1);
goto again;
}
return 0;
}
/*
@ -956,9 +945,8 @@ int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
* If trans is not null, we'll do a friendly check for a transaction that
* is already flushing things and force the IO down ourselves.
*/
int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode)
void btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode)
{
u64 last_mod;
@ -969,7 +957,7 @@ int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
* commit, we can safely return without doing anything
*/
if (last_mod < root->fs_info->last_trans_committed)
return 0;
return;
/*
* the transaction is already committing. Just start the IO and
@ -977,7 +965,7 @@ int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
*/
if (trans && root->fs_info->running_transaction->blocked) {
btrfs_wait_ordered_range(inode, 0, (u64)-1);
return 0;
return;
}
spin_lock(&root->fs_info->ordered_extent_lock);
@ -986,6 +974,4 @@ int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
&root->fs_info->ordered_operations);
}
spin_unlock(&root->fs_info->ordered_extent_lock);
return 0;
}

24
fs/btrfs/ordered-data.h
View file

@ -138,8 +138,8 @@ btrfs_ordered_inode_tree_init(struct btrfs_ordered_inode_tree *t)
t->last = NULL;
}
int btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
int btrfs_remove_ordered_extent(struct inode *inode,
void btrfs_put_ordered_extent(struct btrfs_ordered_extent *entry);
void btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry);
int btrfs_dec_test_ordered_pending(struct inode *inode,
struct btrfs_ordered_extent **cached,
@ -154,14 +154,14 @@ int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset,
int btrfs_add_ordered_extent_compress(struct inode *inode, u64 file_offset,
u64 start, u64 len, u64 disk_len,
int type, int compress_type);
int btrfs_add_ordered_sum(struct inode *inode,
struct btrfs_ordered_extent *entry,
struct btrfs_ordered_sum *sum);
void btrfs_add_ordered_sum(struct inode *inode,
struct btrfs_ordered_extent *entry,
struct btrfs_ordered_sum *sum);
struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct inode *inode,
u64 file_offset);
void btrfs_start_ordered_extent(struct inode *inode,
struct btrfs_ordered_extent *entry, int wait);
int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len);
void btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len);
struct btrfs_ordered_extent *
btrfs_lookup_first_ordered_extent(struct inode * inode, u64 file_offset);
struct btrfs_ordered_extent *btrfs_lookup_ordered_range(struct inode *inode,
@ -170,10 +170,10 @@ struct btrfs_ordered_extent *btrfs_lookup_ordered_range(struct inode *inode,
int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
struct btrfs_ordered_extent *ordered);
int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, u32 *sum);
int btrfs_run_ordered_operations(struct btrfs_root *root, int wait);
int btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode);
int btrfs_wait_ordered_extents(struct btrfs_root *root,
int nocow_only, int delay_iput);
void btrfs_run_ordered_operations(struct btrfs_root *root, int wait);
void btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode);
void btrfs_wait_ordered_extents(struct btrfs_root *root,
int nocow_only, int delay_iput);
#endif

36
fs/btrfs/scrub.c
View file

@ -948,12 +948,12 @@ static int scrub_checksum_super(struct scrub_bio *sbio, void *buffer)
return fail;
}
static int scrub_submit(struct scrub_dev *sdev)
static void scrub_submit(struct scrub_dev *sdev)
{
struct scrub_bio *sbio;
if (sdev->curr == -1)
return 0;
return;
sbio = sdev->bios[sdev->curr];
sbio->err = 0;
@ -961,8 +961,6 @@ static int scrub_submit(struct scrub_dev *sdev)
atomic_inc(&sdev->in_flight);
btrfsic_submit_bio(READ, sbio->bio);
return 0;
}
static int scrub_page(struct scrub_dev *sdev, u64 logical, u64 len,
@ -1008,9 +1006,7 @@ static int scrub_page(struct scrub_dev *sdev, u64 logical, u64 len,
sbio->bio = bio;
} else if (sbio->physical + sbio->count * PAGE_SIZE != physical ||
sbio->logical + sbio->count * PAGE_SIZE != logical) {
ret = scrub_submit(sdev);
if (ret)
return ret;
scrub_submit(sdev);
goto again;
}
sbio->spag[sbio->count].flags = flags;
@ -1025,9 +1021,7 @@ static int scrub_page(struct scrub_dev *sdev, u64 logical, u64 len,
ret = bio_add_page(sbio->bio, page, PAGE_SIZE, 0);
if (!ret) {
__free_page(page);
ret = scrub_submit(sdev);
if (ret)
return ret;
scrub_submit(sdev);
goto again;
}
@ -1036,13 +1030,8 @@ static int scrub_page(struct scrub_dev *sdev, u64 logical, u64 len,
memcpy(sbio->spag[sbio->count].csum, csum, sdev->csum_size);
}
++sbio->count;
if (sbio->count == SCRUB_PAGES_PER_BIO || force) {
int ret;
ret = scrub_submit(sdev);
if (ret)
return ret;
}
if (sbio->count == SCRUB_PAGES_PER_BIO || force)
scrub_submit(sdev);
return 0;
}
@ -1656,7 +1645,7 @@ int btrfs_scrub_dev(struct btrfs_root *root, u64 devid, u64 start, u64 end,
return ret;
}
int btrfs_scrub_pause(struct btrfs_root *root)
void btrfs_scrub_pause(struct btrfs_root *root)
{
struct btrfs_fs_info *fs_info = root->fs_info;
@ -1671,29 +1660,24 @@ int btrfs_scrub_pause(struct btrfs_root *root)
mutex_lock(&fs_info->scrub_lock);
}
mutex_unlock(&fs_info->scrub_lock);
return 0;
}
int btrfs_scrub_continue(struct btrfs_root *root)
void btrfs_scrub_continue(struct btrfs_root *root)
{
struct btrfs_fs_info *fs_info = root->fs_info;
atomic_dec(&fs_info->scrub_pause_req);
wake_up(&fs_info->scrub_pause_wait);
return 0;
}
int btrfs_scrub_pause_super(struct btrfs_root *root)
void btrfs_scrub_pause_super(struct btrfs_root *root)
{
down_write(&root->fs_info->scrub_super_lock);
return 0;
}
int btrfs_scrub_continue_super(struct btrfs_root *root)
void btrfs_scrub_continue_super(struct btrfs_root *root)
{
up_write(&root->fs_info->scrub_super_lock);
return 0;
}
int btrfs_scrub_cancel(struct btrfs_root *root)

5
fs/btrfs/super.c
View file

@ -1408,9 +1408,7 @@ static int __init init_btrfs_fs(void)
if (err)
return err;
err = btrfs_init_compress();
if (err)
goto free_sysfs;
btrfs_init_compress();
err = btrfs_init_cachep();
if (err)
@ -1451,7 +1449,6 @@ static int __init init_btrfs_fs(void)
btrfs_destroy_cachep();
free_compress:
btrfs_exit_compress();
free_sysfs:
btrfs_exit_sysfs();
return err;
}

3
fs/btrfs/transaction.c
View file

@ -1214,8 +1214,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
if (flush_on_commit || snap_pending) {
btrfs_start_delalloc_inodes(root, 1);
ret = btrfs_wait_ordered_extents(root, 0, 1);
BUG_ON(ret);
btrfs_wait_ordered_extents(root, 0, 1);
}
ret = btrfs_run_delayed_items(trans, root);

17
fs/btrfs/tree-log.c
View file

@ -212,14 +212,13 @@ int btrfs_pin_log_trans(struct btrfs_root *root)
* indicate we're done making changes to the log tree
* and wake up anyone waiting to do a sync
*/
int btrfs_end_log_trans(struct btrfs_root *root)
void btrfs_end_log_trans(struct btrfs_root *root)
{
if (atomic_dec_and_test(&root->log_writers)) {
smp_mb();
if (waitqueue_active(&root->log_writer_wait))
wake_up(&root->log_writer_wait);
}
return 0;
}
@ -378,12 +377,11 @@ static noinline int overwrite_item(struct btrfs_trans_handle *trans,
u32 found_size;
found_size = btrfs_item_size_nr(path->nodes[0],
path->slots[0]);
if (found_size > item_size) {
if (found_size > item_size)
btrfs_truncate_item(trans, root, path, item_size, 1);
} else if (found_size < item_size) {
ret = btrfs_extend_item(trans, root, path,
item_size - found_size);
}
else if (found_size < item_size)
btrfs_extend_item(trans, root, path,
item_size - found_size);
} else if (ret) {
return ret;
}
@ -1963,8 +1961,8 @@ static int wait_log_commit(struct btrfs_trans_handle *trans,
return 0;
}
static int wait_for_writer(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
static void wait_for_writer(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
DEFINE_WAIT(wait);
while (root->fs_info->last_trans_log_full_commit !=
@ -1978,7 +1976,6 @@ static int wait_for_writer(struct btrfs_trans_handle *trans,
mutex_lock(&root->log_mutex);
finish_wait(&root->log_writer_wait, &wait);
}
return 0;
}
/*

2
fs/btrfs/tree-log.h
View file

@ -38,7 +38,7 @@ int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
struct inode *inode, u64 dirid);
int btrfs_end_log_trans(struct btrfs_root *root);
void btrfs_end_log_trans(struct btrfs_root *root);
int btrfs_pin_log_trans(struct btrfs_root *root);
int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode,

18
fs/btrfs/volumes.c
View file

@ -67,7 +67,7 @@ static void free_fs_devices(struct btrfs_fs_devices *fs_devices)
kfree(fs_devices);
}
int btrfs_cleanup_fs_uuids(void)
void btrfs_cleanup_fs_uuids(void)
{
struct btrfs_fs_devices *fs_devices;
@ -77,7 +77,6 @@ int btrfs_cleanup_fs_uuids(void)
list_del(&fs_devices->list);
free_fs_devices(fs_devices);
}
return 0;
}
static noinline struct btrfs_device *__find_device(struct list_head *head,
@ -130,7 +129,7 @@ static void requeue_list(struct btrfs_pending_bios *pending_bios,
* the list if the block device is congested. This way, multiple devices
* can make progress from a single worker thread.
*/
static noinline int run_scheduled_bios(struct btrfs_device *device)
static noinline void run_scheduled_bios(struct btrfs_device *device)
{
struct bio *pending;
struct backing_dev_info *bdi;
@ -316,7 +315,6 @@ static noinline int run_scheduled_bios(struct btrfs_device *device)
done:
blk_finish_plug(&plug);
return 0;
}
static void pending_bios_fn(struct btrfs_work *work)
@ -455,7 +453,7 @@ static struct btrfs_fs_devices *clone_fs_devices(struct btrfs_fs_devices *orig)
return ERR_PTR(-ENOMEM);
}
int btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices)
void btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices)
{
struct btrfs_device *device, *next;
@ -503,7 +501,6 @@ int btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices)
fs_devices->latest_trans = latest_transid;
mutex_unlock(&uuid_mutex);
return 0;
}
static void __free_device(struct work_struct *work)
@ -3967,7 +3964,7 @@ struct async_sched {
* This will add one bio to the pending list for a device and make sure
* the work struct is scheduled.
*/
static noinline int schedule_bio(struct btrfs_root *root,
static noinline void schedule_bio(struct btrfs_root *root,
struct btrfs_device *device,
int rw, struct bio *bio)
{
@ -3979,7 +3976,7 @@ static noinline int schedule_bio(struct btrfs_root *root,
bio_get(bio);
btrfsic_submit_bio(rw, bio);
bio_put(bio);
return 0;
return;
}
/*
@ -4013,7 +4010,6 @@ static noinline int schedule_bio(struct btrfs_root *root,
if (should_queue)
btrfs_queue_worker(&root->fs_info->submit_workers,
&device->work);
return 0;
}
int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
@ -4215,7 +4211,7 @@ static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key,
return 0;
}
static int fill_device_from_item(struct extent_buffer *leaf,
static void fill_device_from_item(struct extent_buffer *leaf,
struct btrfs_dev_item *dev_item,
struct btrfs_device *device)
{
@ -4232,8 +4228,6 @@ static int fill_device_from_item(struct extent_buffer *leaf,
ptr = (unsigned long)btrfs_device_uuid(dev_item);
read_extent_buffer(leaf, device->uuid, ptr, BTRFS_UUID_SIZE);
return 0;
}
static int open_seed_devices(struct btrfs_root *root, u8 *fsid)

4
fs/btrfs/volumes.h
View file

@ -260,12 +260,12 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder,
struct btrfs_fs_devices **fs_devices_ret);
int btrfs_close_devices(struct btrfs_fs_devices *fs_devices);
int btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices);
void btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices);
int btrfs_add_device(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct btrfs_device *device);
int btrfs_rm_device(struct btrfs_root *root, char *device_path);
int btrfs_cleanup_fs_uuids(void);
void btrfs_cleanup_fs_uuids(void);
int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len);
int btrfs_grow_device(struct btrfs_trans_handle *trans,
struct btrfs_device *device, u64 new_size);

44
include/trace/events/btrfs.h
View file

@ -6,6 +6,7 @@
#include <linux/writeback.h>
#include <linux/tracepoint.h>
#include <trace/events/gfpflags.h>
struct btrfs_root;
struct btrfs_fs_info;
@ -862,6 +863,49 @@ TRACE_EVENT(btrfs_setup_cluster,
__entry->size, __entry->max_size, __entry->bitmap)
);
struct extent_state;
TRACE_EVENT(alloc_extent_state,
TP_PROTO(struct extent_state *state, gfp_t mask, unsigned long IP),
TP_ARGS(state, mask, IP),
TP_STRUCT__entry(
__field(struct extent_state *, state)
__field(gfp_t, mask)
__field(unsigned long, ip)
),
TP_fast_assign(
__entry->state = state,
__entry->mask = mask,
__entry->ip = IP
),
TP_printk("state=%p; mask = %s; caller = %pF", __entry->state,
show_gfp_flags(__entry->mask), (void *)__entry->ip)
);
TRACE_EVENT(free_extent_state,
TP_PROTO(struct extent_state *state, unsigned long IP),
TP_ARGS(state, IP),
TP_STRUCT__entry(
__field(struct extent_state *, state)
__field(unsigned long, ip)
),
TP_fast_assign(
__entry->state = state,
__entry->ip = IP
),
TP_printk(" state=%p; caller = %pF", __entry->state,
(void *)__entry->ip)
);
#endif /* _TRACE_BTRFS_H */
/* This part must be outside protection */