netdev - Re: deadlocks if use htb

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Message-Id: <20090118.214604.221247372.davem@davemloft.net>
Date:	Sun, 18 Jan 2009 21:46:04 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jarkao2@...il.com
Cc:	ccaputo@....net, a.p.zijlstra@...llo.nl, denys@...p.net.lb,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	slavon@...telecom.ru, tglx@...utronix.de
Subject: Re: deadlocks if use htb

From: Jarek Poplawski <jarkao2@...il.com>
Date: Thu, 15 Jan 2009 06:53:22 +0000

> (resend testing patch #4 - for 2.6.27 or 2.6.28)

Jarek, if you deem that this is in fact what we should
submit for -stable please give me a submission with
a suitable commit message and signoffs, and I will queue
it up for -stable.

Thanks.

> diff -Nurp a2.6.27.7/net/sched/sch_htb.c b2.6.27.7/net/sched/sch_htb.c
> --- a2.6.27.7/net/sched/sch_htb.c	2008-12-11 08:16:16.000000000 +0000
> +++ b2.6.27.7/net/sched/sch_htb.c	2008-12-15 10:44:32.000000000 +0000
> @@ -924,6 +924,7 @@ static struct sk_buff *htb_dequeue(struc
>  		}
>  	}
>  	sch->qstats.overlimits++;
> +	qdisc_watchdog_cancel(&q->watchdog);
>  	qdisc_watchdog_schedule(&q->watchdog, next_event);
>  fin:
>  	return skb;
> --
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