net_sched: introduce qdisc_replace() helper

[firefly-linux-kernel-4.4.55.git] / net / sched / sch_htb.c

diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 15ccd7f8fb2ae35d940119e203259bb67e6e807d..0efbcf358cd0d314d7f7c7d81855d60908af5d8f 100644 (file)
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1163,14 +1163,7 @@ static int htb_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
                                     cl->common.classid)) == NULL)
                return -ENOBUFS;
 
-       sch_tree_lock(sch);
-       *old = cl->un.leaf.q;
-       cl->un.leaf.q = new;
-       if (*old != NULL) {
-               qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
-               qdisc_reset(*old);
-       }
-       sch_tree_unlock(sch);
+       *old = qdisc_replace(sch, new, &cl->un.leaf.q);
        return 0;
 }