[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.

Introduce per-net_device inlines: dev_net(), dev_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/drivers/net/loopback.c b/drivers/net/loopback.c
index f2a6e7132241..41b774baac4d 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -258,7 +258,7 @@ static __net_init int loopback_net_init(struct net *net)
         if (!dev)
                 goto out;
 
-        dev->nd_net = net;
+        dev_net_set(dev, net);
         err = register_netdev(dev);
         if (err)
                 goto out_free_netdev;