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From fbf1396992d57eae7225800226720015469de0fc 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>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
ipc/mqueue.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index e039b7f..0596089 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -835,7 +835,7 @@ 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()
--
1.7.0.4
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