[NET]: Hide the net_ns kmem cache
This cache is only required to create new namespaces,
but we won't have them in CONFIG_NET_NS=n case.
Hide it under the appropriate ifdef.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index a044e2d..e9f0964 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -17,8 +17,6 @@
LIST_HEAD(net_namespace_list);
-static struct kmem_cache *net_cachep;
-
struct net init_net;
EXPORT_SYMBOL_GPL(init_net);
@@ -59,6 +57,8 @@
}
#ifdef CONFIG_NET_NS
+static struct kmem_cache *net_cachep;
+
static struct net *net_alloc(void)
{
return kmem_cache_zalloc(net_cachep, GFP_KERNEL);
@@ -167,9 +167,11 @@
int err;
printk(KERN_INFO "net_namespace: %zd bytes\n", sizeof(struct net));
+#ifdef CONFIG_NET_NS
net_cachep = kmem_cache_create("net_namespace", sizeof(struct net),
SMP_CACHE_BYTES,
SLAB_PANIC, NULL);
+#endif
mutex_lock(&net_mutex);
err = setup_net(&init_net);