Methods netfilter_net_init() and netfilter_net_exit()
initialize net::nf::hooks and change net-related proc
directory of net. Another pernet_operations are not
interested in forein net::nf::hooks or proc entries,
so it's safe to make them executed in parallel with
methods of other pernet operations.

Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
Acked-by: Andrei Vagin <ava...@virtuozzo.com>
---
 net/netfilter/core.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 0f6b8172fb9a..d72cc786c7b7 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -629,6 +629,7 @@ static void __net_exit netfilter_net_exit(struct net *net)
 static struct pernet_operations netfilter_net_ops = {
        .init = netfilter_net_init,
        .exit = netfilter_net_exit,
+       .async = true,
 };
 
 int __init netfilter_init(void)

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