From 91e2ff3528ac90b9dbcb04b76488e8ad74e3d3d9 Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Wed, 2 Dec 2009 13:19:08 +0000
Subject: [PATCH] net: Teach vlans to cleanup as a pernet subsystem
Take advantage of the fact that an explicit rtnl_kill_links is
unnecessary (and skipping it improves batching), as network namespace
exit calls dellink on all remaining virtual devices, and
rtnl_link_unregister calls dellink on all outstanding devices in that
network namespace. To do this we need to leave the vlan proc
directories in place until after network device exit time, which is
done by using register_pernet_subsys instead of
register_pernet_device.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/8021q/vlan.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 91e9073e1995..ec3769295dac 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -698,8 +698,6 @@ static int vlan_init_net(struct net *net)
static void vlan_exit_net(struct net *net)
{
- rtnl_kill_links(net, &vlan_link_ops);
-
vlan_proc_cleanup(net);
}
@@ -717,7 +715,7 @@ static int __init vlan_proto_init(void)
pr_info("%s v%s %s\n", vlan_fullname, vlan_version, vlan_copyright);
pr_info("All bugs added by %s\n", vlan_buggyright);
- err = register_pernet_device(&vlan_net_ops);
+ err = register_pernet_subsys(&vlan_net_ops);
if (err < 0)
goto err0;
@@ -742,7 +740,7 @@ err4:
err3:
unregister_netdevice_notifier(&vlan_notifier_block);
err2:
- unregister_pernet_device(&vlan_net_ops);
+ unregister_pernet_subsys(&vlan_net_ops);
err0:
return err;
}
@@ -762,7 +760,7 @@ static void __exit vlan_cleanup_module(void)
for (i = 0; i < VLAN_GRP_HASH_SIZE; i++)
BUG_ON(!hlist_empty(&vlan_group_hash[i]));
- unregister_pernet_device(&vlan_net_ops);
+ unregister_pernet_subsys(&vlan_net_ops);
rcu_barrier(); /* Wait for completion of call_rcu()'s */
vlan_gvrp_uninit();
--
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