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-rw-r--r--fs/btrfs/ctree.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 7c8faeb868f4..a2c9d21176e2 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1441,8 +1441,8 @@ static inline int should_cow_block(struct btrfs_trans_handle *trans,
if (btrfs_is_testing(root->fs_info))
return 0;
- /* ensure we can see the force_cow */
- smp_rmb();
+ /* Ensure we can see the FORCE_COW bit */
+ smp_mb__before_atomic();
/*
* We do not need to cow a block if