From: Pierre Peiffer <pierre.peiffer@bull.net>
Date: Tue, 29 Apr 2008 08:00:48 +0000 (-0700)
Subject: IPC/message queues: introduce msgctl_down
X-Git-Tag: v2.6.26-rc1~539
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0d092fc2df845a43cc4847836818f49331d0a5c;p=pandora-kernel.git

IPC/message queues: introduce msgctl_down

Currently, sys_msgctl is not easy to read.

This patch tries to improve that by introducing the msgctl_down function to
handle all commands requiring the rwmutex to be taken in write mode (ie
IPC_SET and IPC_RMID for now).  It is the equivalent function of semctl_down
for message queues.

This greatly changes the readability of sys_msgctl and also harmonizes the way
these commands are handled among all IPCs.

Signed-off-by: Pierre Peiffer <pierre.peiffer@bull.net>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: Nadia Derbey <Nadia.Derbey@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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