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btrfs: return void in functions without error conditions 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
fs/btrfs/async-thread.c
View File

@ -171,11 +171,11 @@ out:
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 @@ again:
/*
* 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 @@ found:
* 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 @@ out:
* 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 @@ done:
* 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 @@ out:
/*
* 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 @@ again:
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 @@ again:
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 @@ again:
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 @@ out:
* 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 @@ out:
* 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 @@ search_again:
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 @@ again:
}
out:
spin_unlock(&tree->lock);
return 0;
}
static void set_state_bits(struct extent_io_tree *tree,
@ -1359,9 +1359,9 @@ out:
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 @@ again:
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 @@ search_again:
}
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 @@ again:
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 @@ again:
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 @@ out:
* 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 @@ again:
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 @@ again:
schedule_timeout(1);
goto again;
}
return 0;
}
/*
@ -956,9 +945,8 @@ out:
* 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 @@ again:
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 @@ again:
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 @@ again:
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 @@ free_cachep:
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 @@ insert:
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 @@ loop_lock:
done:
blk_finish_plug(&plug);
return 0;
}
static void pending_bios_fn(struct btrfs_work *work)
@ -455,7 +453,7 @@ error:
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 @@ again:
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 */