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-rw-r--r--fs/btrfs/space-info.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c
index 62382ae1eb02..b87931a458eb 100644
--- a/fs/btrfs/space-info.c
+++ b/fs/btrfs/space-info.c
@@ -737,6 +737,8 @@ static bool need_preemptive_reclaim(struct btrfs_fs_info *fs_info,
u64 thresh = div_factor_fine(space_info->total_bytes, 90);
u64 used;
+ lockdep_assert_held(&space_info->lock);
+
/* If we're just plain full then async reclaim just slows us down. */
if ((space_info->bytes_used + space_info->bytes_reserved +
global_rsv_size) >= thresh)