[Fwd: Re: 2.6.31.4-rt14 posix message queues problem (solved)]

Fwd: Re: 2.6.31.4-rt14 posix message queues problem (solved) Joerg Abraham 1 participant 1 message Oct 16, 2009

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Joerg Abraham

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2009-10-16 08:47 UTC #0 lore raw

forgot to cc rt-users list

Thanx again,

Hi John,

Quoted 3 lines

Hello Joerg
Does the following patch solve your problem?

yes, (verified on powerpc and x86_64)

so it may be save to include your patch into the next rt release.

Thanx,

Joerg

Quoted 24 lines

From 69fde4357db4a054733cbca4158606160e821a3a Mon Sep 17 00:00:00 2001
From: John Kacur <[email protected]>
Date: Thu, 15 Oct 2009 20:52:37 +0200
Subject: [PATCH] preempt_disable_rt(); should be paired with preempt_enable_rt()
Signed-off-by John Kacur <[email protected]>
---
 ipc/mqueue.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
ipc/mqueue.c +1 -1
index 63a47f7..ab4df36 100644
@@ -830,7 +830,7 @@ 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()