From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr40092.outbound.protection.outlook.com ([40.107.4.92]:10319 "EHLO EUR03-DB5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752450AbeBSIsg (ORCPT ); Mon, 19 Feb 2018 03:48:36 -0500 Subject: [PATCH 02/16] net: Convert cfg80211_pernet_ops From: Kirill Tkhai To: davem@davemloft.net, avagin@virtuozzo.com, pablo@netfilter.org, kadlec@blackhole.kfki.hu, fw@strlen.de, yoshfuji@linux-ipv6.org, afaerber@suse.de, steffen.klassert@secunet.com, herbert@gondor.apana.org.au, johannes@sipsolutions.net, netdev@vger.kernel.org, ktkhai@virtuozzo.com Date: Mon, 19 Feb 2018 11:48:14 +0300 Message-ID: <151903009469.32574.5696083200042858174.stgit@localhost.localdomain> In-Reply-To: <151902976942.32574.10711323959096437995.stgit@localhost.localdomain> References: <151902976942.32574.10711323959096437995.stgit@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: netdev-owner@vger.kernel.org List-ID: 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 --- net/wireless/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/wireless/core.c b/net/wireless/core.c index a6f3cac8c640..670aa229168a 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -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)