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

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

net/core/net_namespace.c

+2 −2
Original line number Diff line number Diff line
@@ -582,7 +582,7 @@ static DECLARE_WORK(net_cleanup_work, cleanup_net); 
void __put_net(struct net *net)

{

	/* 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);

}

EXPORT_SYMBOL_GPL(__put_net);