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mac80211: Use rcu_barrier() on unload.

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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 <[email protected]>
Acked-by: Johannes Berg <[email protected]>
Signed-off-by: Jesper Dangaard Brouer <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Jesper Dangaard Brouer 2009-06-26 10:45:53 +00:00 • committed by David S. Miller
commit 4a27096bbe
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/mesh.c
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@ -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);
}