[PATCH v2 06/31] net: Convert proc_net_ns_ops

From: Kirill Tkhai
Date: Mon Nov 20 2017 - 13:33:21 EST

This patch starts to convert pernet_subsys, registered
from before initcalls.

register pernet net->proc_net and ->proc_net_stat.

Constructors and destructors of another pernet_operations
are not interested in foreign net's proc_net and proc_net_stat.
Proc filesystem privitives are synchronized on proc_subdir_lock.

So, proc_net_ns_ops methods are able to be executed
in parallel with methods of other pernet operations.

Signed-off-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx>
fs/proc/proc_net.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index a2bf369c923d..2bf6170204b1 100644
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c
@@ -237,6 +237,7 @@ static __net_exit void proc_net_ns_exit(struct net *net)
static struct pernet_operations __net_initdata proc_net_ns_ops = {
.init = proc_net_ns_init,
.exit = proc_net_ns_exit,
+ .async = true,

int __init proc_net_init(void)