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

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

diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index 9812932..16277b6 100644 (file)
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -321,12 +321,15 @@ static inline void red_adaptative_timer(struct timer_list *t)
 {
        struct red_sched_data *q = from_timer(q, t, adapt_timer);
        struct Qdisc *sch = q->sch;
-       spinlock_t *root_lock = qdisc_lock(qdisc_root_sleeping(sch));
+       spinlock_t *root_lock;
 
+       rcu_read_lock();
+       root_lock = qdisc_lock(qdisc_root_sleeping(sch));
        spin_lock(root_lock);
        red_adaptative_algo(&q->parms, &q->vars);
        mod_timer(&q->adapt_timer, jiffies + HZ/2);
        spin_unlock(root_lock);
+       rcu_read_unlock();
 }
 
 static int red_init(struct Qdisc *sch, struct nlattr *opt,