linux-kernel - Re: [PATCH 3/3] [RFC] tmpfs: Add FALLOC_FL_MARK_VOLATILE/UNMARK

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Message-ID: <CAHGf_=oTC6LGd-5=aGYM4rj+3AAVPr9Zk8cT_FXguVhSVgKWnQ@mail.gmail.com>
Date:	Tue, 12 Jun 2012 12:03:04 -0400
From:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
To:	Minchan Kim <minchan@...nel.org>
Cc:	John Stultz <john.stultz@...aro.org>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Android Kernel Team <kernel-team@...roid.com>,
	Robert Love <rlove@...gle.com>, Mel Gorman <mel@....ul.ie>,
	Hugh Dickins <hughd@...gle.com>,
	Rik van Riel <riel@...hat.com>,
	Dave Chinner <david@...morbit.com>, Neil Brown <neilb@...e.de>,
	Andrea Righi <andrea@...terlinux.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Taras Glek <tgek@...illa.com>, Mike Hommey <mh@...ndium.org>,
	Jan Kara <jack@...e.cz>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [PATCH 3/3] [RFC] tmpfs: Add FALLOC_FL_MARK_VOLATILE/UNMARK_VOLATILE
 handlers

> Off-topic:
> But I'm not sure because I might try to make new easy-reclaimable LRU list for low memory notification.
> That LRU list would contain non-mapped clean cache page and volatile pages if I decide adding it.
> Both pages has a common characteristic that recreating page is less costly.
> It's true for eMMC/SSD like device, at least.

+1.

I like L2 inactive list.
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