linux-kernel - Re: [PATCH] mm: optimize replace_page_cache

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Date:	Wed, 23 Feb 2011 14:44:45 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Minchan Kim <minchan.kim@...il.com>
Cc:	linux-mm <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
	Miklos Szeredi <mszeredi@...e.cz>,
	Rik van Riel <riel@...hat.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Mel Gorman <mel@....ul.ie>
Subject: Re: [PATCH] mm: optimize replace_page_cache_page

On Sun, 20 Feb 2011 08:41:21 +0900
Minchan Kim <minchan.kim@...il.com> wrote:

> Resend.

Reignore.

> he patch is based on mmotm-2011-02-04 + 
> mm-add-replace_page_cache_page-function-add-freepage-hook.patch.
> 
> On Fri, Feb 11, 2011 at 01:33:46AM +0900, Minchan Kim wrote:
> > This patch optmizes replace_page_cache_page.
> > 
> > 1) remove radix_tree_preload
> > 2) single radix_tree_lookup_slot and replace radix tree slot
> > 3) page accounting optimization if both pages are in same zone.
> > 
> > Cc: Miklos Szeredi <mszeredi@...e.cz>
> > Cc: Rik van Riel <riel@...hat.com>
> > Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> > Cc: Mel Gorman <mel@....ul.ie>
> > Signed-off-by: Minchan Kim <minchan.kim@...il.com>
> > ---
> >  mm/filemap.c |   61 ++++++++++++++++++++++++++++++++++++++++++++++++---------
> >  1 files changed, 51 insertions(+), 10 deletions(-)
> > 
> > Hi Miklos,
> > This patch is totally not tested.
> > Could you test this patch?

^^^ Because of this.

Is it tested yet?
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