This eliminates another qdisc_lock_tree user.
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
---
net/sched/sch_generic.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 082db8a..efa418a 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -757,18 +757,20 @@ static void shutdown_scheduler_queue(struct net_device *dev,
struct Qdisc *qdisc_default = _qdisc_default;
if (qdisc) {
+ spinlock_t *root_lock = qdisc_root_lock(qdisc);
+
dev_queue->qdisc = qdisc_default;
dev_queue->qdisc_sleeping = qdisc_default;
+ spin_lock(root_lock);
qdisc_destroy(qdisc);
+ spin_unlock(root_lock);
}
}
void dev_shutdown(struct net_device *dev)
{
- qdisc_lock_tree(dev);
netdev_for_each_tx_queue(dev, shutdown_scheduler_queue, &noop_qdisc);
shutdown_scheduler_queue(dev, &dev->rx_queue, NULL);
BUG_TRAP(!timer_pending(&dev->watchdog_timer));
- qdisc_unlock_tree(dev);
}
--
1.5.6.2.255.gbed62
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