[PATCH net-next 5/5] net: Remove rtnl_lock() in nf_ct_iterate_destroy()

[Kirill Tkhai]

rtnl_lock() doesn't protect net::ct::count,
and it's not needed for__nf_ct_unconfirmed_destroy()
and for nf_queue_nf_hook_drop().

Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
---
 net/netfilter/nf_conntrack_core.c |    2 --
 1 file changed, 2 deletions(-)

diff --git a/net/netfilter/nf_conntrack_core.c 
b/net/netfilter/nf_conntrack_core.c
index 370f9b7f051b..41ff04ee2554 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1763,7 +1763,6 @@ nf_ct_iterate_destroy(int (*iter)(struct nf_conn *i, void 
*data), void *data)
 {
        struct net *net;
 
-       rtnl_lock();
        down_read(&net_rwsem);
        for_each_net(net) {
                if (atomic_read(&net->ct.count) == 0)
@@ -1772,7 +1771,6 @@ nf_ct_iterate_destroy(int (*iter)(struct nf_conn *i, void 
*data), void *data)
                nf_queue_nf_hook_drop(net);
        }
        up_read(&net_rwsem);
-       rtnl_unlock();
 
        /* Need to wait for netns cleanup worker to finish, if its
         * running -- it might have deleted a net namespace from