linux-kernel - Re: [PATCH UPDATED] workqueue: relax lockdep annotation on flush

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Message-Id: <201101032225.46714.rjw@sisk.pl>
Date:	Mon, 3 Jan 2011 22:25:46 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Tejun Heo <tj@...nel.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH UPDATED] workqueue: relax lockdep annotation on flush_work()

On Monday, January 03, 2011, Tejun Heo wrote:
> On Mon, Jan 03, 2011 at 04:14:45PM +0100, Peter Zijlstra wrote:
> > > Hmmm?  The code applies the most strict contraints.  If the workqueue
> > > has a rescuer, flushing another work from the workqueue will always
> > > trigger lockdep warning.  The rule is relaxed only for workqueues
> > > which aren't used for memory reclaiming && support parallel execution.
> > 
> > Ah, ok. I read it like: if the current thread is a rescue thread.
> 
> Ah, I see.  Rafael, can you please verify the updated version is okay
> too (it should be but just in case)?

It still appears to be fine.

Thanks,
Rafael
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