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Date: Tue, 16 Jul 2002 13:49:28 -0300 (BRT)
From: Rik van Riel <riel@conectiva.com.br>
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To: Jens Axboe <axboe@suse.de>
Cc: Andrew Morton <akpm@zip.com.au>,
       William Lee Irwin III <wli@holomorphy.com>,
       <linux-kernel@vger.kernel.org>
Subject: Re: [BUG] loop.c oopses
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On Tue, 16 Jul 2002, Jens Axboe wrote:
> On Tue, Jul 16 2002, Rik van Riel wrote:
> > On Tue, 16 Jul 2002, Andrew Morton wrote:
> >
> > > That's maybe wrong - if there are a decent number of pages
> > > under writeback then we should be able to just wait it out.
> > > But it gets tricky with the loop driver...
> >
> > I wonder if it is possible to exhaust the mempool with
> > the loop driver requests before getting around to the
> > requests to the underlying block device(s)...
>
> Given the finite size of the pool and the possibly infinite stacking
> level, yes that is possible. You may just run out of loop minors before
> this happens [1]. Also note that you need more than a simple remapping,
> crypto setup for instance.

Or maybe SMP, with multiple CPUs submitting requests at the
same time ?

regards,

Rik
-- 
	http://www.linuxsymposium.org/2002/
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