From: Minchan Kim <minchan.kim@gmail.com>
To: Bob Liu <lliubbo@gmail.com>
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
cl@linux-foundation.org, lee.schermerhorn@hp.com,
andi@firstfloor.org, minchar.kim@gmail.com
Subject: Re: [RFC][PATCH] migrate_pages:skip migration between intersect nodes
Date: Tue, 30 Mar 2010 09:03:04 +0900 [thread overview]
Message-ID: <28c262361003291703i5382e342q773ffb16e3324cf5@mail.gmail.com> (raw)
In-Reply-To: <1269874629-1736-1-git-send-email-lliubbo@gmail.com>
Hi, Bob
On Mon, Mar 29, 2010 at 11:57 PM, Bob Liu <lliubbo@gmail.com> wrote:
> In current do_migrate_pages(),if from_nodes and to_nodes have some
> intersect nodes,pages in these intersect nodes will also be
> migrated.
> eg. Assume that, from_nodes: 1,2,3,4 to_nodes: 2,3,4,5. Then these
> migrates will happen:
> migrate_pages(4,5);
> migrate_pages(3,4);
> migrate_pages(2,3);
> migrate_pages(1,2);
>
> But the user just want all pages in from_nodes move to to_nodes,
> only migrate(1,2)(ignore the intersect nodes.) can satisfied
> the user's request.
>
> I amn't sure what's migrate_page's semantic.
> Hoping for your suggestions.
I didn't see 8:migratepages Lee pointed at that time.
The description matches current migrate_pages's behavior exactly.
I agree Lee's opinion.
Let's wait Christoph's reply what is semantic
and why it doesn't have man page.
--
Kind regards,
Minchan Kim
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next prev parent reply other threads:[~2010-03-30 0:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-29 14:57 [RFC][PATCH] migrate_pages:skip migration between intersect nodes Bob Liu
2010-03-29 15:31 ` Lee Schermerhorn
2010-03-29 23:41 ` KOSAKI Motohiro
2010-03-30 16:28 ` Christoph Lameter
2010-03-30 16:49 ` Andi Kleen
2010-03-30 0:03 ` Minchan Kim [this message]
2010-03-30 16:29 ` Christoph Lameter
2010-03-31 1:36 ` Bob Liu
2010-03-31 3:56 ` Minchan Kim
2010-03-31 4:02 ` Bob Liu
2010-03-31 14:17 ` Christoph Lameter
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