Commit 4a27096b authored Jun 26, 2009 by Jesper Dangaard Brouer Committed by David S. Miller Jun 26, 2009

mac80211: Use rcu_barrier() on unload.



The mac80211 module uses rcu_call() thus it should use rcu_barrier()
on module unload.

The rcu_barrier() is placed in mech.c ieee80211_stop_mesh() which is
invoked from ieee80211_stop() in case vif.type == NL80211_IFTYPE_MESH_POINT.

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

parent 75de874f

net/mac80211/mesh.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -494,7 +494,7 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
		* should it be using the interface and enqueuing
		* frames at this very time on another CPU.
		*/
		synchronize_rcu();
		rcu_barrier(); /* Wait for RX path and call_rcu()'s */
		skb_queue_purge(&sdata->u.mesh.skb_queue);
		}