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Date:	Fri, 28 Dec 2012 09:24:53 +0900
From:	Kamezawa Hiroyuki <>
To:	Minchan Kim <>
CC:	Andrew Morton <>,,,
	Michael Kerrisk <>,
	Arun Sharma <>,,
	Paul Turner <>,
	David Rientjes <>,
	John Stultz <>,
	Christoph Lameter <>,
	Android Kernel Team <>,
	Robert Love <>, Mel Gorman <>,
	Hugh Dickins <>,
	Dave Hansen <>,
	Rik van Riel <>,
	Dave Chinner <>, Neil Brown <>,
	Mike Hommey <>, Taras Glek <>,
	KOSAKI Motohiro <>
Subject: Re: [RFC v4 0/3] Support volatile for anonymous range

(2012/12/26 12:46), Minchan Kim wrote:
> Hi Kame,
> What are you doing these holiday season? :)
> I can't believe you sit down in front of computer.
Honestly, my holiday starts tomorrow ;) (but until 1/5 in the next year.)

>> Hm, by the way, the user need to attach pages to the process by causing page-fault
>> (as you do by memset()) before calling mvolatile() ?
> For effectiveness, Yes.

Isn't it better to make page-fault by get_user_pages() in mvolatile() ?
Calling page fault in userland seems just to increase burden of apps.

>> I think your approach is interesting, anyway.
> Thanks for your interest, Kame.
> あけましておめでとう.

A happy new year.


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