netdev - Re: [PATCH] pkt_sched: Destroy gen estimators under rtnl

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Message-ID: <20080813053118.GA31785@gondor.apana.org.au>
Date:	Wed, 13 Aug 2008 15:31:18 +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] pkt_sched: Destroy gen estimators under rtnl_lock().

On Tue, Aug 12, 2008 at 10:11:03PM -0700, David Miller wrote:
>
> So, just like one of Jarek's patches, we should simply change
> dev_queue->qdisc into dev_queue->qdisc_sleeping and that should
> take care of the bulk of the issues.
> 
> Shouldn't it?

Yes you're absolutely right, this takes care of the running qdiscs.

> Hmmm... maybe we have to sample __QDISC_STATE_SCHED too.

You need this too for the ones which aren't running but sitting
on output_queue.  Either you'll have to forcibly remove them as
I outlined earlier, or just wait for them to expire naturally.

The latter would seem more suitable since we're waiting anyway.

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