From: Neil Brown <neilb@suse.de>
To: Christoph Hellwig <hch@infradead.org>
Date: Thu, 22 Feb 2007 14:46:55 +1100
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Message-ID: <17885.4655.13602.796653@notabene.brown>
Cc: Pierre Ossman <drzeus-list@drzeus.cx>, LKML <linux-kernel@vger.kernel.org>,
       schwidefsky@de.ibm.com
Subject: Re: Block layer still stack abuser?
In-Reply-To: message from Christoph Hellwig on Thursday February 22
References: <45D59C3C.4090403@drzeus.cx>
	<17885.1120.437885.35438@notabene.brown>
	<20070222034424.GC9027@infradead.org>
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On Thursday February 22, hch@infradead.org wrote:
> On Thu, Feb 22, 2007 at 01:48:00PM +1100, Neil Brown wrote:
> > Might this:
> >    http://lkml.org/lkml/2007/2/10/22
> > 
> > relate to your question?
> > If you are talking about stacking block device (via dm or md), then a
> > patch to fix this in in -mm but there are or were some potential
> > issues in dm that seem to be holding it up.
> 
> What are the current blocking issues?  There are a lot of users of dm/md
> double-stacking (e.g. mirroring + multipath) that are in deep trouble
> currently and could be helped greatly with this patch.

All I know is what is in that mail message that I linked to.

NeilBrown
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