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| author | Denis V. Lunev <den@openvz.org> | 2008-04-16 01:58:04 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-16 01:58:04 -0700 |
| commit | 5d1e4468a7705db7c1415a65fd16f07113afc1b2 (patch) | |
| tree | 41d34aa3f0e3b8cc0453973d8ce9e03303264080 /net/core/net_namespace.c | |
| parent | 554eb27782d4bb79e0a286a08ecafb81f758058c (diff) | |
| download | kernel-common-5d1e4468a7705db7c1415a65fd16f07113afc1b2.tar.gz kernel-common-5d1e4468a7705db7c1415a65fd16f07113afc1b2.tar.bz2 kernel-common-5d1e4468a7705db7c1415a65fd16f07113afc1b2.zip | |
[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 <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/net_namespace.c')
| -rw-r--r-- | net/core/net_namespace.c | 4 |
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) 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); } |