[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/cifsfs.c b/fs/cifs/cifsfs.c
index ed92c7d36378..493b74ca5648 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -617,8 +617,10 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
                 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;
+                        }
                 }
                 /*
                  * Some applications poll for the file length in this strange