From: Pierre Peiffer <pierre.peiffer@bull.net>
Date: Tue, 29 Apr 2008 08:00:49 +0000 (-0700)
Subject: IPC/semaphores: move the rwmutex handling inside semctl_down
X-Git-Tag: v2.6.26-rc1~538
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=522bb2a2b420a0c1d0fcd037aa4e1bb9e2bca447;p=pandora-kernel.git

IPC/semaphores: move the rwmutex handling inside semctl_down

semctl_down is called with the rwmutex (the one which protects the list of
ipcs) taken in write mode.

This patch moves this rwmutex taken in write-mode inside semctl_down.

This has the advantages of reducing a little bit the window during which this
rwmutex is taken, clarifying sys_semctl, and finally of having a coherent
behaviour with [shm|msg]ctl_down

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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