1 files changed, 1 insertions, 0 deletions

diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 22baf6ea4fac..237e7f6f2ab3 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -419,6 +419,7 @@ static inline void xfs_iflock(struct xfs_inode *ip)
 static inline void xfs_ifunlock(struct xfs_inode *ip)
 {
         xfs_iflags_clear(ip, XFS_IFLOCK);
+        smp_mb();
         wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT);
 }