From: Dave Hansen <haveblue@us.ibm.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: linux-mm <linux-mm@kvack.org>
Subject: Re: [RFC] memory-layout-free zones (for review) [2/3] remvoe zone_start_pfn/spanned_pages
Date: Thu, 23 Feb 2006 10:06:52 -0800 [thread overview]
Message-ID: <1140718012.8697.63.camel@localhost.localdomain> (raw)
In-Reply-To: <20060223175819.3fbb21fe.kamezawa.hiroyu@jp.fujitsu.com>
On Thu, 2006-02-23 at 17:58 +0900, KAMEZAWA Hiroyuki wrote:
> This patch removes zone_start_pfn/zone_spanned_pages from zone struct.
> (and also removes seqlock for zone resizing)
>
> By this definion of zone will change
> from : a contiguous range of pages to be used in the same manner.
> to : a group of pages to be used in the same manner.
>
> zone will become a pure page_allocator. memory layout is managed by
> pgdat.
>
> This change has benefit for memory-hotplug and maybe other works.
> We can define a zone which is free from memory layout, like ZONE_EASYRCLM,
> ZONE_EMERGENCY(currently maneged by mempool) etc..witout inconsistency.
>
> for_each_page_in_zone() uses zone's memory layout information, but this
> patch doesn't include fixes for it. It will be fixed by following patch.
Geez, that removes a bunch of code. _My_ code. I like it. :)
-- Dave
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prev parent reply other threads:[~2006-02-23 18:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-23 8:58 KAMEZAWA Hiroyuki
2006-02-23 18:06 ` Dave Hansen [this message]
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