+void qdisc_lock_tree(struct net_device *dev)
+{
+ write_lock_bh(&qdisc_tree_lock);
+ spin_lock_bh(&dev->queue_lock);
+}
+
+void qdisc_unlock_tree(struct net_device *dev)
+{
+ spin_unlock_bh(&dev->queue_lock);
+ write_unlock_bh(&qdisc_tree_lock);
+}
+