From: Davidlohr Bueso <davidlohr.bueso@hp.com>
Date: Mon, 8 Jul 2013 23:01:13 +0000 (-0700)
Subject: ipc,msg: shorten critical region in msgctl_down
X-Git-Tag: v3.11-rc1~67^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=15724ecb7e9bab35fc694c666ad563adba820cc3;p=pandora-kernel.git

ipc,msg: shorten critical region in msgctl_down

Instead of holding the ipc lock for the entire function, use the
ipcctl_pre_down_nolock and only acquire the lock for specific commands:
RMID and SET.

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>
---

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