commit 3b1e0a655f8eba44ab1ee2a1068d169ccfb853b9
author YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Wed Mar 26 02:26:21 2008 +0900
committer YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Wed Mar 26 04:39:55 2008 +0900
tree 09edb35f32ebcfb1b4dad904425128a110ef16ee
parent c346dca10840a874240c78efe3f39acf4312a1f2

[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>

net/socket.c

diff --git a/net/socket.c b/net/socket.c
index 9d3fbfb..79e5382 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -857,7 +857,7 @@
 
 	sock = file->private_data;
 	sk = sock->sk;
-	net = sk->sk_net;
+	net = sock_net(sk);
 	if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) {
 		err = dev_ioctl(net, cmd, argp);
 	} else
@@ -1375,7 +1375,7 @@
 
 	sock = sockfd_lookup_light(fd, &err, &fput_needed);
 	if (sock) {
-		somaxconn = sock->sk->sk_net->sysctl_somaxconn;
+		somaxconn = sock_net(sock->sk)->sysctl_somaxconn;
 		if ((unsigned)backlog > somaxconn)
 			backlog = somaxconn;