linux-kernel - [PATCH] generic ipi function calls: wait on alloc failure fallback

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Message-ID: <4870ECBA.7050901@goop.org>
Date:	Sun, 06 Jul 2008 09:03:06 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Jens Axboe <jens.axboe@...cle.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] generic ipi function calls: wait on alloc failure fallback

When a GFP_ATOMIC allocation fails, smp_call_function_mask falls back
to allocating the data on the stack and converting it to a waiting call.

Make sure we actually wait in this case.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
---
 kernel/smp.c |    1 +
 1 file changed, 1 insertion(+)

===================================================================
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -312,6 +312,7 @@ int smp_call_function_mask(cpumask_t mas
 	if (!data) {
 		data = &d;
 		data->csd.flags = CSD_FLAG_WAIT;
+		wait = 1;
 	}
 
 	spin_lock_init(&data->lock);



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