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btrfs: add missing annotation for btrfs_lock_cluster()

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Sparse reports a warning at btrfs_lock_cluster()

warning: context imbalance in btrfs_lock_cluster()
	- wrong count

The root cause is the missing annotation at btrfs_lock_cluster()
Add the missing __acquires(&cluster->refill_lock) annotation.

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Jules Irenge 2020-03-31 21:46:41 +01:00 committed by David Sterba
parent 9cb1fd0efd
commit c142c6a449
1 changed files with 1 additions and 0 deletions
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fs/btrfs/extent-tree.c
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@ -3369,6 +3369,7 @@ static struct btrfs_block_group *btrfs_lock_cluster(
struct btrfs_block_group *block_group,
struct btrfs_free_cluster *cluster,
int delalloc)
__acquires(&cluster->refill_lock)
{
struct btrfs_block_group *used_bg = NULL;