From 522ecd1cf18899a6c436421d8c5eb4684fdcc2f1 Mon Sep 17 00:00:00 2001
From: John Kacur <jkacur@redhat.com>
Date: Thu, 15 Oct 2009 21:09:32 +0200
Subject: [PATCH] ipc: fix rt/non_rt imbalance

commit 1920d618c37ee53bb424a32f26076af2fa5b2a8b in tip.

commit 3c96a2 (ipc: Make the ipc code -rt aware) introduced a
imbalance of preempt_disable_rt vs. preempt_enable_nort. That results
in preempt count leak.

Make it symetric.

Reported-by: Joerg Abraham <Joerg.Abraham@alcatel-lucent.de>
Signed-off-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 02ee4ff..5bcb571 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -828,7 +828,7 @@ static inline void pipelined_send(struct mqueue_inode_info *info,
 	wake_up_process(receiver->task);
 	smp_wmb();
 	receiver->state = STATE_READY;
-	preempt_enable_nort();
+	preempt_enable_rt();
 }
 
 /* pipelined_receive() - if there is task waiting in sys_mq_timedsend()
-- 
1.7.1.1