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net: Convert uevent_net_ops

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uevent_net_init() and uevent_net_exit() create and
destroy netlink socket, and these actions serialized
in netlink code.

Parallel execution with other pernet_operations
makes the socket disappear earlier from uevent_sock_list
on ->exit. As userspace can't be interested in broadcast
messages of dying net, and, as I see, no one in kernel
listen them, we may safely make uevent_net_ops async.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kirill Tkhai 2018-02-13 12:28:33 +03:00 committed by David S. Miller
parent 906f63ec1d
commit 15898a011b
1 changed files with 1 additions and 0 deletions
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lib/kobject_uevent.c
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@ -650,6 +650,7 @@ static void uevent_net_exit(struct net *net)
static struct pernet_operations uevent_net_ops = {
.init = uevent_net_init,
.exit = uevent_net_exit,
.async = true,
};
static int __init kobject_uevent_init(void)