net: sched: add rcu annotations around qdisc->qdisc_sleeping

[tomoyo/tomoyo-test1.git] / net / sched / sch_mq.c

diff --git a/net/sched/sch_mq.c b/net/sched/sch_mq.c
index d0bc660..c860119 100644 (file)
--- a/net/sched/sch_mq.c
+++ b/net/sched/sch_mq.c
@@ -141,7 +141,7 @@ static int mq_dump(struct Qdisc *sch, struct sk_buff *skb)
         * qdisc totals are added at end.
         */
        for (ntx = 0; ntx < dev->num_tx_queues; ntx++) {
-               qdisc = netdev_get_tx_queue(dev, ntx)->qdisc_sleeping;
+               qdisc = rtnl_dereference(netdev_get_tx_queue(dev, ntx)->qdisc_sleeping);
                spin_lock_bh(qdisc_lock(qdisc));
 
                gnet_stats_add_basic(&sch->bstats, qdisc->cpu_bstats,
@@ -202,7 +202,7 @@ static struct Qdisc *mq_leaf(struct Qdisc *sch, unsigned long cl)
 {
        struct netdev_queue *dev_queue = mq_queue_get(sch, cl);
 
-       return dev_queue->qdisc_sleeping;
+       return rtnl_dereference(dev_queue->qdisc_sleeping);
 }
 
 static unsigned long mq_find(struct Qdisc *sch, u32 classid)
@@ -221,7 +221,7 @@ static int mq_dump_class(struct Qdisc *sch, unsigned long cl,
 
        tcm->tcm_parent = TC_H_ROOT;
        tcm->tcm_handle |= TC_H_MIN(cl);
-       tcm->tcm_info = dev_queue->qdisc_sleeping->handle;
+       tcm->tcm_info = rtnl_dereference(dev_queue->qdisc_sleeping)->handle;
        return 0;
 }
 
@@ -230,7 +230,7 @@ static int mq_dump_class_stats(struct Qdisc *sch, unsigned long cl,
 {
        struct netdev_queue *dev_queue = mq_queue_get(sch, cl);
 
-       sch = dev_queue->qdisc_sleeping;
+       sch = rtnl_dereference(dev_queue->qdisc_sleeping);
        if (gnet_stats_copy_basic(d, sch->cpu_bstats, &sch->bstats, true) < 0 ||
            qdisc_qstats_copy(d, sch) < 0)
                return -1;