linux-kernel - [Patch (block.git) 1/2] Add irqsave to spinlocks in call function single interrupt

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Message-ID: <47DE9DA7.1090805@hp.com>
Date:	Mon, 17 Mar 2008 12:34:47 -0400
From:	"Alan D. Brunelle" <Alan.Brunelle@...com>
To:	linux-kernel@...r.kernel.org
Cc:	Jens Axboe <jens.axboe@...cle.com>, npiggin@...e.de, dgc@....com
Subject: [Patch (block.git) 1/2] Add irqsave to spinlocks in call function
 single interrupt


Signed-off-by: Alan D. Brunelle <alan.brunelle@...com>
---
 kernel/smp.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/smp.c b/kernel/smp.c
index 852abd3..7232e1c 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -24,12 +24,13 @@ void __cpuinit generic_init_call_single_data(void)
 void generic_smp_call_function_single_interrupt(void)
 {
 	struct call_single_queue *q;
+	unsigned long flags;
 	LIST_HEAD(list);
 
 	q = &__get_cpu_var(call_single_queue);
-	spin_lock(&q->lock);
+	spin_lock_irqsave(&q->lock, flags);
 	list_replace_init(&q->list, &list);
-	spin_unlock(&q->lock);
+	spin_unlock_irqrestore(&q->lock, flags);
 
 	while (!list_empty(&list)) {
 		struct call_single_data *data;
-- 
1.5.2.5

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