1 files changed, 1 insertions, 0 deletions

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index e5070aa5f175..02e185168602 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1050,6 +1050,7 @@ int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
         }
 
         set_bit(NFS_INO_INVALIDATING, bitlock);
+        smp_wmb();
         nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
         spin_unlock(&inode->i_lock);
         trace_nfs_invalidate_mapping_enter(inode);