From 5d1e4468a7705db7c1415a65fd16f07113afc1b2 Mon Sep 17 00:00:00 2001 From: "Denis V. Lunev" Date: Wed, 16 Apr 2008 01:58:04 -0700 Subject: [NETNS]: Make netns refconting debug like a socket one. Make release_net/hold_net noop for performance-hungry people. This is a debug staff and should be used in the debug mode only. Add check for net != NULL in hold/release calls. This will be required later on. [ Added minor simplifications suggested by Brian Haley. -DaveM ] Signed-off-by: Denis V. Lunev Signed-off-by: David S. Miller --- net/core/net_namespace.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'net/core/net_namespace.c') 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) struct net_generic *ng; atomic_set(&net->count, 1); +#ifdef NETNS_REFCNT_DEBUG atomic_set(&net->use_count, 0); +#endif error = -ENOMEM; ng = kzalloc(sizeof(struct net_generic) + @@ -86,11 +88,13 @@ static void net_free(struct net *net) if (!net) return; +#ifdef NETNS_REFCNT_DEBUG if (unlikely(atomic_read(&net->use_count) != 0)) { printk(KERN_EMERG "network namespace not free! Usage: %d\n", atomic_read(&net->use_count)); return; } +#endif kmem_cache_free(net_cachep, net); } -- cgit v1.2.3