net: Convert cfg80211_pernet_ops
authorKirill Tkhai <ktkhai@virtuozzo.com>
Mon, 19 Feb 2018 08:48:14 +0000 (11:48 +0300)
committerDavid S. Miller <davem@davemloft.net>
Mon, 19 Feb 2018 19:19:09 +0000 (14:19 -0500)
This patch finishes converting pernet_operations
registered in net/wireless directory.

These pernet_operations have only exit method,
which moves devices to init_net. This action
is not pernet_operations-specific, and function
cfg80211_switch_netns() may be called all time
during the system life. All necessary protection
against concurrent cfg80211_pernet_exit() is made
by rtnl_lock(). So, cfg80211_pernet_ops is able
to be marked as async.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/wireless/core.c

index a6f3cac8c640e4cdb0eb4fb9d3c77bf3fd352576..670aa229168afb483fba054aa3d417bd08edfc4f 100644 (file)
@@ -1340,6 +1340,7 @@ static void __net_exit cfg80211_pernet_exit(struct net *net)
 
 static struct pernet_operations cfg80211_pernet_ops = {
        .exit = cfg80211_pernet_exit,
+       .async = true,
 };
 
 static int __init cfg80211_init(void)