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-rw-r--r--net/core/net_namespace.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 763674e1e593..72b4c184dd84 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -35,7 +35,9 @@ static __net_init int setup_net(struct net *net)
35 struct net_generic *ng; 35 struct net_generic *ng;
36 36
37 atomic_set(&net->count, 1); 37 atomic_set(&net->count, 1);
38#ifdef NETNS_REFCNT_DEBUG
38 atomic_set(&net->use_count, 0); 39 atomic_set(&net->use_count, 0);
40#endif
39 41
40 error = -ENOMEM; 42 error = -ENOMEM;
41 ng = kzalloc(sizeof(struct net_generic) + 43 ng = kzalloc(sizeof(struct net_generic) +
@@ -86,11 +88,13 @@ static void net_free(struct net *net)
86 if (!net) 88 if (!net)
87 return; 89 return;
88 90
91#ifdef NETNS_REFCNT_DEBUG
89 if (unlikely(atomic_read(&net->use_count) != 0)) { 92 if (unlikely(atomic_read(&net->use_count) != 0)) {
90 printk(KERN_EMERG "network namespace not free! Usage: %d\n", 93 printk(KERN_EMERG "network namespace not free! Usage: %d\n",
91 atomic_read(&net->use_count)); 94 atomic_read(&net->use_count));
92 return; 95 return;
93 } 96 }
97#endif
94 98
95 kmem_cache_free(net_cachep, net); 99 kmem_cache_free(net_cachep, net);
96} 100}