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pkt_sched: Use rcu_assign_pointer() to change dev_queue->qdisc 

These pointers are RCU protected, so proper primitives should be used.

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jarek Poplawski 2008-08-27 02:22:07 -07:00 committed by David S. Miller
parent 666d9bbedf
commit f7a54c13c7
2 changed files with 3 additions and 3 deletions
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2
net/sched/sch_api.c
View File

@ -635,7 +635,7 @@ static struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
if (qdisc == NULL)
qdisc = &noop_qdisc;
dev_queue->qdisc_sleeping = qdisc;
dev_queue->qdisc = &noop_qdisc;
rcu_assign_pointer(dev_queue->qdisc, &noop_qdisc);
spin_unlock_bh(root_lock);

4
net/sched/sch_generic.c
View File

@ -634,7 +634,7 @@ static void dev_deactivate_queue(struct net_device *dev,
if (!(qdisc->flags & TCQ_F_BUILTIN))
set_bit(__QDISC_STATE_DEACTIVATED, &qdisc->state);
dev_queue->qdisc = qdisc_default;
rcu_assign_pointer(dev_queue->qdisc, qdisc_default);
qdisc_reset(qdisc);
spin_unlock_bh(qdisc_lock(qdisc));
@ -709,7 +709,7 @@ static void shutdown_scheduler_queue(struct net_device *dev,
struct Qdisc *qdisc_default = _qdisc_default;
if (qdisc) {
dev_queue->qdisc = qdisc_default;
rcu_assign_pointer(dev_queue->qdisc, qdisc_default);
dev_queue->qdisc_sleeping = qdisc_default;
qdisc_destroy(qdisc);