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 8c860112ce05e85549caf068fb0d670e98d99328..71daa0934b6c4a2622d7b595e7f7efd4076fd21a 100644 (file)
--- 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");