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Date:	Mon, 7 Feb 2011 17:28:06 -0800
From:	Andrew Morton <>
To:	Miklos Szeredi <>
Cc:	Minchan Kim <>, linux-mm <>,
	LKML <>,
	Rik van Riel <>,
	KAMEZAWA Hiroyuki <>,
	Mel Gorman <>
Subject: Re: [PATCH] mm: Add hook of freepage

On Mon, 07 Feb 2011 10:37:01 +0100
Miklos Szeredi <> wrote:

> On Mon, 2011-02-07 at 00:08 +0900, Minchan Kim wrote:
> > Recently, "Call the filesystem back whenever a page is removed from
> > the page cache(6072d13c)" added new freepage hook in page cache
> > drop function.
> > 
> > So, replace_page_cache_page should call freepage to support
> > page cleanup to fs.
> Thanks Minchan for fixing this.

What's happening with mm-add-replace_page_cache_page-function.patch,
btw?  When last discussed nearly three weeks ago we had identified:

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.

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