From: Manfred Spraul <manfred@colorfullife.com>
Date: Fri, 6 Jun 2014 21:37:47 +0000 (-0700)
Subject: ipc/sem.c: bugfix for semctl(,,GETZCNT)
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~91^2~4^2~50
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1994862dc9c16f360a9169a4d27200d15ba29713;p=pandora-kernel.git

ipc/sem.c: bugfix for semctl(,,GETZCNT)

GETZCNT is supposed to return the number of threads that wait until a
semaphore value becomes 0.

The current implementation overlooks complex operations that contain
both wait-for-zero operation and operations that alter at least one
semaphore.

The patch fixes that.  It's intentionally copy&paste, this will be
cleaned up in the next patch.

Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <davidlohr.bueso@hp.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed