linux-kernel - Re: [PATCH] vmscan: recalculate lru

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Message-ID: <AANLkTinXLZD-8QkMU8T5xqnGg2Fl55Nkzd6HzNT1FhPo@mail.gmail.com>
Date:	Sun, 27 Jun 2010 08:33:34 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>
Subject: Re: [PATCH] vmscan: recalculate lru_pages on each priority

On Fri, Jun 25, 2010 at 6:13 PM, KOSAKI Motohiro
<kosaki.motohiro@...fujitsu.com> wrote:
> shrink_zones() need relatively long time. and lru_pages can be
> changed dramatically while shrink_zones().
> then, lru_pages need recalculate on each priority.
>
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@...il.com>

Kosaki's patch seems to be reasonable to me.

I looked into background reclaim. It already has done until now.
(ie, background : dynamic lru_pages in each priority, direct reclaim :
static lru_pages in each priority).
Firstly In 53dce00d, Andrew did it.
Why does he do it with unbalance?
I guess it was just a mistake.

-- 
Kind regards,
Minchan Kim
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