Re: [PATCH, RFC] simplify writeback thread creation

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On Thu, 2010-07-08 at 20:48 +0200, Christoph Hellwig wrote:
> On Thu, Jul 08, 2010 at 09:43:22PM +0300, Artem Bityutskiy wrote:
> > Hmm, was thinking about this while driving home - the forker approach
> > has a good resilience property - if it cannot fork - it'll do the stuff
> > itself. I have a feeling that if something like this to be implemented
> > with the approach I suggested, we'll end up with similar level of
> > complexity that we wanted to get rid of...
> 
> Yes, the lazy starting is what adds the complexity.  I think starting
> it once we have any filesystem mounted on the bdi and stop it once all
> filesystems are gone is a lot simpler and more elegant.

But what about cases like 'dd if=/dev/zero of=/dev/sda4'? They also
involve dirty data write-back.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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