From f6f9b93f1624206c802ac9162c9302edaf59bfd9 Mon Sep 17 00:00:00 2001 From: Jarek Poplawski Date: Wed, 27 Aug 2008 02:25:17 -0700 Subject: pkt_sched: Fix gen_estimator locks While passing a qdisc root lock to gen_new_estimator() and gen_replace_estimator() dev could be deactivated or even before grafting proper root qdisc as qdisc_sleeping (e.g. qdisc_create), so using qdisc_root_lock() is not enough. This patch adds qdisc_root_sleeping_lock() for this, plus additional checks, where necessary. Signed-off-by: Jarek Poplawski Signed-off-by: David S. Miller --- net/sched/sch_cbq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/sched/sch_cbq.c') diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index 8fa90d68ec6d..9b720adedead 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -1839,7 +1839,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t if (tca[TCA_RATE]) gen_replace_estimator(&cl->bstats, &cl->rate_est, - qdisc_root_lock(sch), + qdisc_root_sleeping_lock(sch), tca[TCA_RATE]); return 0; } @@ -1930,7 +1930,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t if (tca[TCA_RATE]) gen_new_estimator(&cl->bstats, &cl->rate_est, - qdisc_root_lock(sch), tca[TCA_RATE]); + qdisc_root_sleeping_lock(sch), tca[TCA_RATE]); *arg = (unsigned long)cl; return 0; -- cgit v1.2.3