linux-kernel - [PATCH] memory hotplug: fix warnings

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Date:	Tue, 30 Apr 2013 10:31:37 +0200
From:	Vincent Stehlé <vincent.stehle@...oste.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	David Rientjes <rientjes@...gle.com>, linux-kernel@...r.kernel.org,
	Vincent Stehlé <vincent.stehle@...oste.net>
Subject: [PATCH] memory hotplug: fix warnings

Fix the following compilation warnings:

  mm/slab.c: In function ‘kmem_cache_init_late’:
  mm/slab.c:1778:2: warning: statement with no effect [-Wunused-value]

  mm/page_cgroup.c: In function ‘page_cgroup_init’:
  mm/page_cgroup.c:305:2: warning: statement with no effect [-Wunused-value]

Signed-off-by: Vincent Stehlé <vincent.stehle@...oste.net>
---
 include/linux/memory.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/memory.h b/include/linux/memory.h
index 73817af..85c31a8 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -137,7 +137,7 @@ enum mem_add_context { BOOT, HOTPLUG };
 #define register_hotmemory_notifier(nb)		register_memory_notifier(nb)
 #define unregister_hotmemory_notifier(nb) 	unregister_memory_notifier(nb)
 #else
-#define hotplug_memory_notifier(fn, pri)	(0)
+#define hotplug_memory_notifier(fn, pri)	({ 0; })
 /* These aren't inline functions due to a GCC bug. */
 #define register_hotmemory_notifier(nb)    ({ (void)(nb); 0; })
 #define unregister_hotmemory_notifier(nb)  ({ (void)(nb); })
-- 
1.7.10.4

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