netdev - [PATCH net] sock: only define socket limit if mem cgroup configured

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Date:	Fri, 22 Feb 2013 09:59:10 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: [PATCH net] sock: only define socket limit if mem cgroup configured

The mem cgroup socket limit is only used if the config option is
enabled. Found with sparse

Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>


--- a/net/core/sock.c	2013-02-21 13:52:10.000000000 -0800
+++ b/net/core/sock.c	2013-02-21 21:03:06.075605811 -0800
@@ -186,8 +186,10 @@ void mem_cgroup_sockets_destroy(struct m
 static struct lock_class_key af_family_keys[AF_MAX];
 static struct lock_class_key af_family_slock_keys[AF_MAX];
 
+#if defined(CONFIG_MEMCG_KMEM)
 struct static_key memcg_socket_limit_enabled;
 EXPORT_SYMBOL(memcg_socket_limit_enabled);
+#endif
 
 /*
  * Make lock validator output more readable. (we pre-construct these
--
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