tree 2c6bf3cbda81fd56969c6b8d51a32baba5d6f5e3
parent 66ffd113f5d81e951b0379acfd0a1df0771d8828
author Jeff Layton <jlayton@redhat.com> 1375885748 -0400
committer Steve French <smfrench@gmail.com> 1375891026 -0500

cifs: don't instantiate new dentries in readdir for inodes that need to be revalidated immediately

David reported that commit c2b93e06 (cifs: only set ops for inodes in
I_NEW state) caused a regression with mfsymlinks. Prior to that patch,
if a mfsymlink dentry was instantiated at readdir time, the inode would
get a new set of ops when it was revalidated. After that patch, this
did not occur.

This patch addresses this by simply skipping instantiating dentries in
the readdir codepath when we know that they will need to be immediately
revalidated. The next attempt to use that dentry will cause a new lookup
to occur (which is basically what we want to happen anyway).

Cc: <stable@vger.kernel.org>
Cc: "Stefan (metze) Metzmacher" <metze@samba.org>
Cc: Sachin Prabhu <sprabhu@redhat.com>
Reported-and-Tested-by: David McBride <dwm37@cam.ac.uk>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>