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

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Message-ID: <46641472.3080802@de.ibm.com>
Date:	Mon, 04 Jun 2007 15:32:34 +0200
From:	Carsten Otte <cotte@...ibm.com>
To:	Nick Piggin <nickpiggin@...oo.com.au>
CC:	Jared Hulbert <jaredeh@...il.com>, carsteno@...ibm.com,
	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

Nick Piggin wrote:
> The question is, why is that not enough (I haven't looked at these
> patches enough to work out if there is anything more they provide).
I think, it just takes trying things out. From reading the code, I 
think this should work well for the filemap_xip code with no struct page.
Also, we need eliminate nopage() to get rid of the struct page. 
Unfortunately I don't find time to try this out for now, and on 390 we 
can live with struct page for the time being. In contrast to the 
embedded platforms, the mem_mep array gets swapped out to disk by our 
hypervisor.

so long,
Carsten
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