From: Kirill Tkhai <ktkhai@virtuozzo.com>
Date: Tue, 13 Feb 2018 09:28:15 +0000 (+0300)
Subject: net: Convert rtnetlink_net_ops
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=46456675ec1b7f93dadd2b1b4b58d763c3ae9266;p=linux.git

net: Convert rtnetlink_net_ops

rtnetlink_net_init() and rtnetlink_net_exit()
create and destroy netlink socket net::rtnl.

The socket is used to send rtnl notification via
rtnl_net_notifyid(). There is no a problem
to create and destroy it in parallel with other
pernet operations, as we link net in setup_net()
after the socket is created, and destroy
in cleanup_net() after net is unhashed from all
the lists and there is no RCU references on it.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 257e7bbaffba2..67f375cfb9829 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -4724,6 +4724,7 @@ static void __net_exit rtnetlink_net_exit(struct net *net)
 static struct pernet_operations rtnetlink_net_ops = {
 	.init = rtnetlink_net_init,
 	.exit = rtnetlink_net_exit,
+	.async = true,
 };
 
 void __init rtnetlink_init(void)