linux-kernel - [PATCH] slub: add lock debugging check

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Message-Id: <1185472898.15205.4.camel@lappy>
Date:	Thu, 26 Jul 2007 20:01:38 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Christoph Lameter <clameter@....com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>, Ingo Molnar <mingo@...e.hu>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] slub: add lock debugging check


Ingo noticed that the SLUB code does include the lock debugging free
check.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Acked-by: Ingo Molnar <mingo@...e.hu>
Acked-by: Pekka Enberg <penberg@...helsinki.fi>
Acked-by: Christoph Lameter <clameter@....com>
---
 mm/slub.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c
+++ linux-2.6/mm/slub.c
@@ -1656,6 +1656,7 @@ static void __always_inline slab_free(st
 	unsigned long flags;
 
 	local_irq_save(flags);
+	debug_check_no_locks_freed(object, s->objsize);
 	if (likely(page == s->cpu_slab[smp_processor_id()] &&
 						!SlabDebug(page))) {
 		object[page->offset] = page->lockless_freelist;


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