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Date: Wed, 28 Sep 2011 17:03:34 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH 5/9] kstaled: skip non-RAM regions.
Message-Id: <20110928170334.a56e1695.kamezawa.hiroyu@jp.fujitsu.com>
In-Reply-To: <1317170947-17074-6-git-send-email-walken@google.com>
References: <1317170947-17074-1-git-send-email-walken@google.com>
	<1317170947-17074-6-git-send-email-walken@google.com>
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To: Michel Lespinasse <walken@google.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>, Dave Hansen <dave@linux.vnet.ibm.com>, Rik van Riel <riel@redhat.com>, Balbir Singh <bsingharora@gmail.com>, Peter Zijlstra <a.p.zijlstra@chello.nl>, Andrea Arcangeli <aarcange@redhat.com>, Johannes Weiner <jweiner@redhat.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Hugh Dickins <hughd@google.com>, Michael Wolf <mjwolf@us.ibm.com>

On Tue, 27 Sep 2011 17:49:03 -0700
Michel Lespinasse <walken@google.com> wrote:

> Add a pfn_skip_hole function that shrinks the passed input range in order to
> skip over pfn ranges that are known not bo be RAM backed. The x86
> implementation achieves this using e820 tables; other architectures
> use a generic no-op implementation.
> 
> 
> Signed-off-by: Michel Lespinasse <walken@google.com>

Hm, can't you use walk_system_ram_range() in kernel/resource.c ?
If it's enough, please update it.

Thanks,
-Kame

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