From: Pavel Shilovsky <piastry@etersoft.ru>
Date: Thu, 22 Nov 2012 14:56:39 +0000 (+0400)
Subject: CIFS: Fix lock consistensy bug in cifs_setlk
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~54^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=21cb2d90c76cbc951da3a266f0dd439d64f3114a;p=pandora-kernel.git

CIFS: Fix lock consistensy bug in cifs_setlk

If we netogiate mandatory locking style, have a read lock and try
to set a write lock we end up with a write lock in vfs cache and
no lock in cifs lock cache - that's wrong. Fix it by returning
from cifs_setlk immediately if a error occurs during setting a lock.

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