262acf757a06588eb2d
author Pavel Shilovsky <piastry@etersoft.ru> 1354027133 +0400
committer Steve French <smfrench@gmail.com> 1354905650 -0600

CIFS: Do not permit write to a range mandatory locked with a read lock

We don't need to permit a write to the area locked with a read lock
by any process including the process that issues the write.

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <smfrench@gmail.com>