[NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.

Introduce per-sock inlines: sock_net(), sock_net_set()
and per-inet_timewait_sock inlines: twsk_net(), twsk_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index 6f21a53cb3e7..ae54b20d0470 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -837,7 +837,7 @@ static int irda_accept(struct socket *sock, struct socket *newsock, int flags)
 
         IRDA_DEBUG(2, "%s()\n", __func__);
 
-        err = irda_create(sk->sk_net, newsock, sk->sk_protocol);
+        err = irda_create(sock_net(sk), newsock, sk->sk_protocol);
         if (err)
                 return err;