From: Manfred Spraul <manfred@colorfullife.com>
Date: Mon, 30 Sep 2013 20:45:07 +0000 (-0700)
Subject: ipc/sem.c: synchronize the proc interface
X-Git-Tag: v3.12-rc4~35^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8c633766ad88527f25d9f81a5c2f083d78a2b39;p=pandora-kernel.git

ipc/sem.c: synchronize the proc interface

The proc interface is not aware of sem_lock(), it instead calls
ipc_lock_object() directly.  This means that simple semop() operations
can run in parallel with the proc interface.  Right now, this is
uncritical, because the implementation doesn't do anything that requires
a proper synchronization.

But it is dangerous and therefore should be fixed.

Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Mike Galbraith <efault@gmx.de>
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-diff-tree failed