[PATCH v2 26/31] net: Convert packet_net_ops

These pernet_operations just create and destroy /proc entry,
and another operations do not touch it.

Also, nobody else are interested in foreign net::packet::sklist.

Signed-off-by: Kirill Tkhai <redacted>
---
 net/packet/af_packet.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 737092ca9b4e..700cdf36767b 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c

@@ -4566,6 +4566,7 @@ static void __net_exit packet_net_exit(struct net *net)
 static struct pernet_operations packet_net_ops = {
 	.init = packet_net_init,
 	.exit = packet_net_exit,
+	.async = true,
 };