linux-kernel - Re: [PATCH 2.6.21] cramfs: add cramfs Linear XIP

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Date:	Fri, 8 Jun 2007 09:04:01 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	carsteno@...ibm.com
Cc:	Christoph Hellwig <hch@...radead.org>,
	Jared Hulbert <jaredeh@...il.com>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Andrew Morton <akpm@...ux-foundation.org>,
	richard.griffiths@...driver.com,
	Richard Griffiths <res07ml0@...izon.net>,
	Linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.21] cramfs: add cramfs Linear XIP

On Fri, Jun 08, 2007 at 09:59:20AM +0200, Carsten Otte wrote:
> Christoph Hellwig wrote:
> >Jared's patch currently does ioremap on mount (and no iounmap at all).
> >That mapping needs to move from the filesystem to the device driver.
> The device driver needs to do ioremap on open(), and iounmap() on 
> release. That's effectively what our block driver does.

Yes, exactly.
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