From: Manfred Spraul <manfred@colorfullife.com>
Date: Wed, 26 May 2010 21:43:41 +0000 (-0700)
Subject: ipc/sem.c: move wake_up_process out of the spinlock section
X-Git-Tag: v2.6.35-rc1~135
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0a2b9d4c7967;p=pandora-kernel.git

ipc/sem.c: move wake_up_process out of the spinlock section

The wake-up part of semtimedop() consists out of two steps:

- the right tasks must be identified.
- they must be woken up.

Right now, both steps run while the array spinlock is held.  This patch
reorders the code and moves the actual wake_up_process() behind the point
where the spinlock is dropped.

The code also moves setting sem->sem_otime to one place: It does not make
sense to set the last modify time multiple times.

[akpm@linux-foundation.org: repair kerneldoc]
[akpm@linux-foundation.org: fix uninitialised retval]
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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