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

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Message-ID: <AANLkTik47+rots2XsouMiCnefmxeC_n=Q9mwBSyE9YjC@mail.gmail.com>
Date:	Thu, 24 Feb 2011 08:37:27 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Miklos Szeredi <mszeredi@...e.cz>
Cc:	linux-mm <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
	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 Thu, Feb 24, 2011 at 7:44 AM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
> 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?
>

Miklos. Could you test this?
If you are busy, let me know how to test it. I will.
Thanks.


-- 
Kind regards,
Minchan Kim
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