Merge branch 'linus' into core/rcutip-core-rcu-2008-06-23_09.29_Mon

1 files changed, 11 insertions, 0 deletions

diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index aa540e6be502..d9dd0f707296 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -95,6 +95,11 @@ extern struct list_head net_namespace_list;
 #ifdef CONFIG_NET_NS
 extern void __put_net(struct net *net);
 
+static inline int net_alive(struct net *net)
+{
+	return net && atomic_read(&net->count);
+}
+
 static inline struct net *get_net(struct net *net)
 {
 	atomic_inc(&net->count);
@@ -125,6 +130,12 @@ int net_eq(const struct net *net1, const struct net *net2)
 	return net1 == net2;
 }
 #else
+
+static inline int net_alive(struct net *net)
+{
+	return 1;
+}
+
 static inline struct net *get_net(struct net *net)
 {
 	return net;