Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / net / sched / sch_drr.c

diff --git a/kernel/net/sched/sch_drr.c b/kernel/net/sched/sch_drr.c
index f26bdea..d6e3ad4 100644 (file)
--- a/kernel/net/sched/sch_drr.c
+++ b/kernel/net/sched/sch_drr.c
@@ -53,9 +53,10 @@ static struct drr_class *drr_find_class(struct Qdisc *sch, u32 classid)
 static void drr_purge_queue(struct drr_class *cl)
 {
        unsigned int len = cl->qdisc->q.qlen;
+       unsigned int backlog = cl->qdisc->qstats.backlog;
 
        qdisc_reset(cl->qdisc);
-       qdisc_tree_decrease_qlen(cl->qdisc, len);
+       qdisc_tree_reduce_backlog(cl->qdisc, len, backlog);
 }
 
 static const struct nla_policy drr_policy[TCA_DRR_MAX + 1] = {
@@ -226,11 +227,7 @@ static int drr_graft_class(struct Qdisc *sch, unsigned long arg,
                        new = &noop_qdisc;
        }
 
-       sch_tree_lock(sch);
-       drr_purge_queue(cl);
-       *old = cl->qdisc;
-       cl->qdisc = new;
-       sch_tree_unlock(sch);
+       *old = qdisc_replace(sch, new, &cl->qdisc);
        return 0;
 }