net_sched: introduce qdisc_replace() helper

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

diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c
index 5bbb6332ec5746dd1f33a04f4e22bcde5eb787c0..0e74e55fda158fb04e776a660c03d1e880ec3faf 100644 (file)
--- a/net/sched/sch_sfb.c
+++ b/net/sched/sch_sfb.c
@@ -606,12 +606,7 @@ static int sfb_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
        if (new == NULL)
                new = &noop_qdisc;
 
-       sch_tree_lock(sch);
-       *old = q->qdisc;
-       q->qdisc = new;
-       qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
-       qdisc_reset(*old);
-       sch_tree_unlock(sch);
+       *old = qdisc_replace(sch, new, &q->qdisc);
        return 0;
 }