netdev - Re: [PATCH take 2] pkt_sched: Fix qdisc_watchdog() vs. dev

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Date:	Thu, 11 Sep 2008 20:45:31 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	jarkao2@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH take 2] pkt_sched: Fix qdisc_watchdog() vs.
	dev_deactivate() race

On Thu, Sep 11, 2008 at 03:39:56AM -0700, David Miller wrote:
>
> I got to looking into this and we do need the qdisc->dev_queue member,
> see qdisc_run().  So it's not like we can get rid of it if we replace
> it with ->netdevdev and add a ->root_qdisc backpointer as well.

That can't be right.  Let's I've got a single qdisc shared by
n queues.  It makes no sense for qdisc_run to decide to whether
it should process the qdisc depending on the status of a single
one out of the n queues.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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