linux-kernel - Re: [patch 1/2] x86: track memtype for RAM in page struct

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Message-ID: <48CBF25B.5030107@goop.org>
Date:	Sat, 13 Sep 2008 10:03:23 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>
CC:	arjan@...ux.intel.com, mingo@...e.hu, tglx@...utronix.de,
	hpa@...or.com, andi@...stfloor.org, linux-kernel@...r.kernel.org,
	Suresh Siddha <suresh.b.siddha@...el.com>
Subject: Re: [patch 1/2] x86: track memtype for RAM in page struct

Venkatesh Pallipadi wrote:
> From: Suresh Siddha <suresh.b.siddha@...el.com>
> Subject: [patch 1/2] x86: track memtype for RAM in page struct
>
> Track the memtype for RAM pages in page struct instead of using the memtype
> list. This avoids the explosion in the number of entries in memtype list
> (of the order of 20,000 with AGP) and makes the PAT tracking simpler. We are
> using PG_arch_1 bit in page->flags.
>   

Please define PG_arch_1 a proper name so that its easy to tell its being
used just by looking at page-flags.h.

    J
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