From: Jesper Dangaard Brouer <hawk@comx.dk>
Date: Mon, 8 Jun 2009 03:11:33 +0000 (+0000)
Subject: nfnetlink_queue: Use rcu_barrier() on module unload.
X-Git-Tag: v2.6.31-rc1~14^2~146
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=67137f3cc727e4da0297ffd7bfade837aa15ecfa;p=profile%2Fivi%2Fkernel-x86-ivi.git

nfnetlink_queue: Use rcu_barrier() on module unload.

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

Also fixed a trivial typo 'nfetlink' -> 'nfnetlink' in comment.

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

diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index 8c86011..71daa09 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -1,6 +1,6 @@
 /*
  * This is a module which is used for queueing packets and communicating with
- * userspace via nfetlink.
+ * userspace via nfnetlink.
  *
  * (C) 2005 by Harald Welte <laforge@netfilter.org>
  * (C) 2007 by Patrick McHardy <kaber@trash.net>
@@ -932,6 +932,8 @@ static void __exit nfnetlink_queue_fini(void)
 #endif
 	nfnetlink_subsys_unregister(&nfqnl_subsys);
 	netlink_unregister_notifier(&nfqnl_rtnl_notifier);
+
+	rcu_barrier(); /* Wait for completion of call_rcu()'s */
 }
 
 MODULE_DESCRIPTION("netfilter packet queue handler");