[PATCH 2/5] nfnetlink_queue: Use rcu_barrier() on module unload.

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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@xxxxxxx>
---

 net/netfilter/nfnetlink_queue.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

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@xxxxxxxxxxxxx>
  * (C) 2007 by Patrick McHardy <kaber@xxxxxxxxx>
@@ -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");

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