[CIFS] Fix to problem with getattr caused by invalidate simplification patch

Fix to earlier "Simplify invalidate part (try #6)" patch
That patch caused problems with connectathon test 5.

Reviewed-by: Jeff Layton <jlayton@samba.org>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 0cc7eddb077f..de02ed5e25c2 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1805,8 +1805,10 @@ int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
         if (!CIFS_I(inode)->clientCanCacheRead && inode->i_mapping &&
             inode->i_mapping->nrpages != 0) {
                 rc = filemap_fdatawait(inode->i_mapping);
-                mapping_set_error(inode->i_mapping, rc);
-                return rc;
+                if (rc) {
+                        mapping_set_error(inode->i_mapping, rc);
+                        return rc;
+                }
         }
 
         rc = cifs_revalidate_dentry_attr(dentry);