From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Wed, 1 Oct 2014 11:53:20 +0000 (+0200)
Subject: netfilter: nf_tables: wait for call_rcu completion on module removal
X-Git-Tag: v4.0~1069^2~40^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1b1bc49c0fc0501bf0d1366a2a5e5c1f8dcf9cb1;p=platform%2Fkernel%2Flinux-amlogic.git

netfilter: nf_tables: wait for call_rcu completion on module removal

Make sure the objects have been released before the nf_tables modules
is removed.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 19e79f0..556a0df 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -4163,6 +4163,7 @@ static void __exit nf_tables_module_exit(void)
 {
 	unregister_pernet_subsys(&nf_tables_net_ops);
 	nfnetlink_subsys_unregister(&nf_tables_subsys);
+	rcu_barrier();
 	nf_tables_core_module_exit();
 	kfree(info);
 }