netdev - [PATCH net-next 03/10] net_sched: sch_codel: defer skb freeing in codel

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Date:	Mon, 13 Jun 2016 20:21:52 -0700
From:	Eric Dumazet <edumazet@...gle.com>
To:	"David S . Miller" <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Cong Wang <xiyou.wangcong@...il.com>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 03/10] net_sched: sch_codel: defer skb freeing in codel_change()

codel_change() can use rtnl_qdisc_drop()
to defer expensive skb freeing after locks are released.

codel_reset() already has support for deferred skb freeing
because it uses qdisc_reset_queue()

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/sched/sch_codel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sched/sch_codel.c b/net/sched/sch_codel.c
index dddf3bb65a32..c5bc424e3b3c 100644
--- a/net/sched/sch_codel.c
+++ b/net/sched/sch_codel.c
@@ -174,7 +174,7 @@ static int codel_change(struct Qdisc *sch, struct nlattr *opt)
 
 		dropped += qdisc_pkt_len(skb);
 		qdisc_qstats_backlog_dec(sch, skb);
-		qdisc_drop(skb, sch);
+		rtnl_qdisc_drop(skb, sch);
 	}
 	qdisc_tree_reduce_backlog(sch, qlen - sch->q.qlen, dropped);
 
-- 
2.8.0.rc3.226.g39d4020