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btrfs: export the excluded extents helpers 

We'll need this to move the caching stuff around.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2019-06-20 15:37:49 -04:00 committed by David Sterba
parent 676f1f759f
commit 6f410d1b3d
2 changed files with 22 additions and 17 deletions
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3
fs/btrfs/ctree.h
View File

@ -2473,6 +2473,9 @@ static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info,
return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items;
}
int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,
u64 start, u64 num_bytes);
void btrfs_free_excluded_extents(struct btrfs_block_group_cache *cache);
int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
unsigned long count);
void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info,

36
fs/btrfs/extent-tree.c
View File

@ -100,8 +100,8 @@ static int btrfs_add_block_group_cache(struct btrfs_fs_info *info,
return 0;
}
static int add_excluded_extent(struct btrfs_fs_info *fs_info,
u64 start, u64 num_bytes)
int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,
u64 start, u64 num_bytes)
{
u64 end = start + num_bytes - 1;
set_extent_bits(&fs_info->freed_extents[0],
@ -111,7 +111,7 @@ static int add_excluded_extent(struct btrfs_fs_info *fs_info,
return 0;
}
static void free_excluded_extents(struct btrfs_block_group_cache *cache)
void btrfs_free_excluded_extents(struct btrfs_block_group_cache *cache)
{
struct btrfs_fs_info *fs_info = cache->fs_info;
u64 start, end;
@ -136,8 +136,8 @@ static int exclude_super_stripes(struct btrfs_block_group_cache *cache)
if (cache->key.objectid < BTRFS_SUPER_INFO_OFFSET) {
stripe_len = BTRFS_SUPER_INFO_OFFSET - cache->key.objectid;
cache->bytes_super += stripe_len;
ret = add_excluded_extent(fs_info, cache->key.objectid,
stripe_len);
ret = btrfs_add_excluded_extent(fs_info, cache->key.objectid,
stripe_len);
if (ret)
return ret;
}
@ -170,7 +170,7 @@ static int exclude_super_stripes(struct btrfs_block_group_cache *cache)
}
cache->bytes_super += len;
ret = add_excluded_extent(fs_info, start, len);
ret = btrfs_add_excluded_extent(fs_info, start, len);
if (ret) {
kfree(logical);
return ret;
@ -450,7 +450,7 @@ static noinline void caching_thread(struct btrfs_work *work)
caching_ctl->progress = (u64)-1;
up_read(&fs_info->commit_root_sem);
free_excluded_extents(block_group);
btrfs_free_excluded_extents(block_group);
mutex_unlock(&caching_ctl->mutex);
wake_up(&caching_ctl->wait);
@ -558,7 +558,7 @@ int btrfs_cache_block_group(struct btrfs_block_group_cache *cache,
wake_up(&caching_ctl->wait);
if (ret == 1) {
put_caching_control(caching_ctl);
free_excluded_extents(cache);
btrfs_free_excluded_extents(cache);
return 0;
}
} else {
@ -4163,7 +4163,8 @@ static int __exclude_logged_extent(struct btrfs_fs_info *fs_info,
mutex_lock(&caching_ctl->mutex);
if (start >= caching_ctl->progress) {
ret = add_excluded_extent(fs_info, start, num_bytes);
ret = btrfs_add_excluded_extent(fs_info, start,
num_bytes);
} else if (start + num_bytes <= caching_ctl->progress) {
ret = btrfs_remove_free_space(block_group,
start, num_bytes);
@ -4177,7 +4178,8 @@ static int __exclude_logged_extent(struct btrfs_fs_info *fs_info,
num_bytes = (start + num_bytes) -
caching_ctl->progress;
start = caching_ctl->progress;
ret = add_excluded_extent(fs_info, start, num_bytes);
ret = btrfs_add_excluded_extent(fs_info, start,
num_bytes);
}
out_lock:
mutex_unlock(&caching_ctl->mutex);
@ -7513,7 +7515,7 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
*/
if (block_group->cached == BTRFS_CACHE_NO ||
block_group->cached == BTRFS_CACHE_ERROR)
free_excluded_extents(block_group);
btrfs_free_excluded_extents(block_group);
btrfs_remove_free_space_cache(block_group);
ASSERT(block_group->cached != BTRFS_CACHE_STARTED);
@ -7806,7 +7808,7 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info)
* We may have excluded something, so call this just in
* case.
*/
free_excluded_extents(cache);
btrfs_free_excluded_extents(cache);
btrfs_put_block_group(cache);
goto error;
}
@ -7821,14 +7823,14 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info)
if (found_key.offset == btrfs_block_group_used(&cache->item)) {
cache->last_byte_to_unpin = (u64)-1;
cache->cached = BTRFS_CACHE_FINISHED;
free_excluded_extents(cache);
btrfs_free_excluded_extents(cache);
} else if (btrfs_block_group_used(&cache->item) == 0) {
cache->last_byte_to_unpin = (u64)-1;
cache->cached = BTRFS_CACHE_FINISHED;
add_new_free_space(cache, found_key.objectid,
found_key.objectid +
found_key.offset);
free_excluded_extents(cache);
btrfs_free_excluded_extents(cache);
}
ret = btrfs_add_block_group_cache(info, cache);
@ -7952,14 +7954,14 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, u64 bytes_used,
* We may have excluded something, so call this just in
* case.
*/
free_excluded_extents(cache);
btrfs_free_excluded_extents(cache);
btrfs_put_block_group(cache);
return ret;
}
add_new_free_space(cache, chunk_offset, chunk_offset + size);
free_excluded_extents(cache);
btrfs_free_excluded_extents(cache);
#ifdef CONFIG_BTRFS_DEBUG
if (btrfs_should_fragment_free_space(cache)) {
@ -8075,7 +8077,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
* Free the reserved super bytes from this block group before
* remove it.
*/
free_excluded_extents(block_group);
btrfs_free_excluded_extents(block_group);
btrfs_free_ref_tree_range(fs_info, block_group->key.objectid,
block_group->key.offset);