linux-kernel - Re: [RFC mm][PATCH 4/5] add a lowmem check function

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Message-ID: <alpine.DEB.2.00.0912101155490.5481@router.home>
Date:	Thu, 10 Dec 2009 11:59:11 -0600 (CST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	minchan.kim@...il.com, mingo@...e.hu
Subject: Re: [RFC mm][PATCH 4/5] add a lowmem check function

On Thu, 10 Dec 2009, KAMEZAWA Hiroyuki wrote:

> This patch adds an integer lowmem_zone, which is initialized to -1.
> If zone_idx(zone) <= lowmem_zone, the zone is lowmem.

There is already a policy_zone in mempolicy.h. lowmem is if the zone
number is  lower than policy_zone. Can we avoid adding another zone
limiter?


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