diff options
| -rw-r--r-- | fs/btrfs/extent_io.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 21d2cb7f538e..5e8dd9a99e58 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3493,6 +3493,7 @@ void free_extent_buffer(struct extent_buffer *eb) break; } + /* Optimization to avoid locking eb->refs_lock. */ if (atomic_try_cmpxchg(&eb->refs, &refs, refs - 1)) return; } |