Commit 8349efd9 authored by Kirill Tkhai's avatar Kirill Tkhai Committed by David S. Miller

net: Queue net_cleanup_work only if there is first net added

When llist_add() returns false, cleanup_net() hasn't made its
llist_del_all(), while the work has already been scheduled
by the first queuer. So, we may skip queue_work() in this case.
Signed-off-by: default avatarKirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 65b7b5b9
...@@ -582,7 +582,7 @@ static DECLARE_WORK(net_cleanup_work, cleanup_net); ...@@ -582,7 +582,7 @@ static DECLARE_WORK(net_cleanup_work, cleanup_net);
void __put_net(struct net *net) void __put_net(struct net *net)
{ {
/* Cleanup the network namespace in process context */ /* Cleanup the network namespace in process context */
llist_add(&net->cleanup_list, &cleanup_list); if (llist_add(&net->cleanup_list, &cleanup_list))
queue_work(netns_wq, &net_cleanup_work); queue_work(netns_wq, &net_cleanup_work);
} }
EXPORT_SYMBOL_GPL(__put_net); EXPORT_SYMBOL_GPL(__put_net);
......
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