netdev - [PATCH net-next] net: Convert can_pernet

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Message-ID: <152145954531.26024.3744883546191004693.stgit@localhost.localdomain>
Date:   Mon, 19 Mar 2018 14:39:05 +0300
From:   Kirill Tkhai <ktkhai@...tuozzo.com>
To:     davem@...emloft.net, socketcan@...tkopp.net, mkl@...gutronix.de,
        linux-can@...r.kernel.org, netdev@...r.kernel.org,
        ktkhai@...tuozzo.com
Subject: [PATCH net-next] net: Convert can_pernet_ops

These pernet_operations create and destroy /proc entries
and cancel per-net timer.

Also, there are unneed iterations over empty list of net
devices, since all net devices must be already moved
to init_net or unregistered by default_device_ops. This
already was mentioned here:

https://marc.info/?l=linux-can&m=150169589119335&w=2

So, it looks safe to make them async.

Signed-off-by: Kirill Tkhai <ktkhai@...tuozzo.com>
---
 net/can/af_can.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/can/af_can.c b/net/can/af_can.c
index 6da324550eec..e899970398a1 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -954,6 +954,7 @@ static struct notifier_block can_netdev_notifier __read_mostly = {
 static struct pernet_operations can_pernet_ops __read_mostly = {
 	.init = can_pernet_init,
 	.exit = can_pernet_exit,
+	.async = true,
 };
 
 static __init int can_init(void)