From: Kirill Tkhai Date: Mon, 19 Feb 2018 08:48:57 +0000 (+0300) Subject: net: Convert icmpv6_sk_ops, ndisc_net_ops and igmp6_net_ops X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1a2e93329dd413585798c122aac0607093b2d379;p=linux.git net: Convert icmpv6_sk_ops, ndisc_net_ops and igmp6_net_ops These pernet_operations create and destroy net::ipv6.icmp_sk socket, used to send ICMP or error reply. Nobody can dereference the socket to handle a packet before net is initialized, as there is no routing; nobody can do that in parallel with exit, as all of devices are moved to init_net or destroyed and there are no packets it-flight. So, it's possible to mark these pernet_operations as async. The same for ndisc_net_ops and for igmp6_net_ops. The last one also creates and destroys /proc entries. Signed-off-by: Kirill Tkhai Signed-off-by: David S. Miller --- diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 6ae5dd3f4d0de..4fa4f1b150a4d 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -997,6 +997,7 @@ static void __net_exit icmpv6_sk_exit(struct net *net) static struct pernet_operations icmpv6_sk_ops = { .init = icmpv6_sk_init, .exit = icmpv6_sk_exit, + .async = true, }; int __init icmpv6_init(void) diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 9b9d2ff01b355..d9bb933dd5c42 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -2997,6 +2997,7 @@ static void __net_exit igmp6_net_exit(struct net *net) static struct pernet_operations igmp6_net_ops = { .init = igmp6_net_init, .exit = igmp6_net_exit, + .async = true, }; int __init igmp6_init(void) diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index f61a5b613b52b..0a19ce3a6f7ff 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1882,6 +1882,7 @@ static void __net_exit ndisc_net_exit(struct net *net) static struct pernet_operations ndisc_net_ops = { .init = ndisc_net_init, .exit = ndisc_net_exit, + .async = true, }; int __init ndisc_init(void)