From 3dd1f784ed6603d7ab1043e51e6371235edf2313 Mon Sep 17 00:00:00 2001
From: Davidlohr Bueso <davidlohr.bueso@hp.com>
Date: Mon, 8 Jul 2013 16:01:17 -0700
Subject: [PATCH] ipc,msg: shorten critical region in msgsnd

do_msgsnd() is another function that does too many things with the ipc
object lock acquired.  Take it only when needed when actually updating
msq.

Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
Reading git-format-patch failed