---

yaml
---
r: 135212
b: refs/heads/master
c: 7cd0a63
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8bdd663aba341c15cd2fa9dbd7061b8b387964dc
+refs/heads/master: 7cd0a63872ac6ef97265f07adc367ca4f984468e

trunk/net/sched/sch_cbq.c

@@ -1960,8 +1960,11 @@ static int cbq_delete(struct Qdisc *sch, unsigned long arg)
 	cbq_rmprio(q, cl);
 	sch_tree_unlock(sch);
 
-	if (--cl->refcnt == 0)
-		cbq_destroy_class(sch, cl);
+	BUG_ON(--cl->refcnt == 0);
+	/*
+	 * This shouldn't happen: we "hold" one cops->get() when called
+	 * from tc_ctl_tclass; the destroy method is done from cops->put().
+	 */
 
 	return 0;
 }

trunk/net/sched/sch_drr.c

@@ -155,8 +155,11 @@ static int drr_delete_class(struct Qdisc *sch, unsigned long arg)
 	drr_purge_queue(cl);
 	qdisc_class_hash_remove(&q->clhash, &cl->common);
 
-	if (--cl->refcnt == 0)
-		drr_destroy_class(sch, cl);
+	BUG_ON(--cl->refcnt == 0);
+	/*
+	 * This shouldn't happen: we "hold" one cops->get() when called
+	 * from tc_ctl_tclass; the destroy method is done from cops->put().
+	 */
 
 	sch_tree_unlock(sch);
 	return 0;

trunk/net/sched/sch_hfsc.c

@@ -1139,8 +1139,11 @@ hfsc_delete_class(struct Qdisc *sch, unsigned long arg)
 	hfsc_purge_queue(sch, cl);
 	qdisc_class_hash_remove(&q->clhash, &cl->cl_common);
 
-	if (--cl->refcnt == 0)
-		hfsc_destroy_class(sch, cl);
+	BUG_ON(--cl->refcnt == 0);
+	/*
+	 * This shouldn't happen: we "hold" one cops->get() when called
+	 * from tc_ctl_tclass; the destroy method is done from cops->put().
+	 */
 
 	sch_tree_unlock(sch);
 	return 0;

trunk/net/sched/sch_htb.c

@@ -1275,8 +1275,11 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg)
 	if (last_child)
 		htb_parent_to_leaf(q, cl, new_q);
 
-	if (--cl->refcnt == 0)
-		htb_destroy_class(sch, cl);
+	BUG_ON(--cl->refcnt == 0);
+	/*
+	 * This shouldn't happen: we "hold" one cops->get() when called
+	 * from tc_ctl_tclass; the destroy method is done from cops->put().
+	 */
 
 	sch_tree_unlock(sch);
 	return 0;