From: Jesper Dangaard Brouer <hawk@comx.dk>
Date: Fri, 26 Jun 2009 10:46:03 +0000 (+0000)
Subject: ipv6: Use rcu_barrier() on module unload.
X-Git-Tag: v2.6.31-rc2~26^2~32
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1f2ccd00f224a4e2d6d26f590f3e6851f3deef99;p=platform%2Fkernel%2Flinux-stable.git

ipv6: Use rcu_barrier() on module unload.

The ipv6 module uses rcu_call() thus it should use rcu_barrier() on
module unload.

Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 85b3d00..caa0278 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -1284,6 +1284,8 @@ static void __exit inet6_exit(void)
 	proto_unregister(&udplitev6_prot);
 	proto_unregister(&udpv6_prot);
 	proto_unregister(&tcpv6_prot);
+
+	rcu_barrier(); /* Wait for completion of call_rcu()'s */
 }
 module_exit(inet6_exit);