diff mbox series

[net-next,v3,16/32] net: Convert uevent_net_ops

Message ID 151851411366.5034.9867266210876662443.stgit@localhost.localdomain
State Accepted, archived
Delegated to: David Miller
Headers show
Series Replacing net_mutex with rw_semaphore | expand

Commit Message

Kirill Tkhai Feb. 13, 2018, 9:28 a.m. UTC 
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>
---
 lib/kobject_uevent.c |    1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 9fe6ec8fda28..9539d7ab3ea8 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -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)