NFS: Fix a connectathon regression in NFSv3 and NFSv4

We're failing basic test6 against Linux servers because they lack a correct
change attribute. The fix is to assume that we always want to invalidate
the readdir caches when we call update_changeattr and/or
nfs_post_op_update_inode on a directory.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 30d5dd5735cd..cb99fd90a9ac 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -208,12 +208,10 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
         struct nfs_inode *nfsi = NFS_I(dir);
 
         spin_lock(&dir->i_lock);
-        if (cinfo->after != nfsi->change_attr) {
-                nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
-                if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
-                        nfsi->cache_change_attribute = jiffies;
-                nfsi->change_attr = cinfo->after;
-        }
+        nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
+        if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
+                nfsi->cache_change_attribute = jiffies;
+        nfsi->change_attr = cinfo->after;
         spin_unlock(&dir->i_lock);
 }