netdev - Re: 2.6.25rc7 lockdep trace

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Date:	Fri, 04 Apr 2008 16:48:12 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	David Miller <davem@...emloft.net>
Cc:	davej@...emonkey.org.uk, netdev@...r.kernel.org
Subject: Re: 2.6.25rc7 lockdep trace


On Thu, 2008-04-03 at 13:48 -0700, David Miller wrote:
> From: Johannes Berg <johannes@...solutions.net>
> Date: Sat, 29 Mar 2008 11:02:28 +0100
> 
> > However, as I just tried to explain, cancel_work_sync() _is_ safe to run
> > while holding the RTNL because it doesn't need any runqueue lock.
> 
> So in theory we should be able to safely transform
> flush_scheduled_work() calls in network driver close
> methods into cancel_work_sync()?

Yes, more precisely cancel_work_sync() for each work struct the driver
uses, unless the driver actually requires that the work runs before it
goes down.

johannes

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