[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>
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 3554fb3..fc2efe8 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1094,7 +1094,7 @@
cb = DN_SKB_CB(skb);
sk->sk_ack_backlog--;
- newsk = dn_alloc_sock(sk->sk_net, newsock, sk->sk_allocation);
+ newsk = dn_alloc_sock(sock_net(sk), newsock, sk->sk_allocation);
if (newsk == NULL) {
release_sock(sk);
kfree_skb(skb);