From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id 389828D0017 for ; Mon, 15 Nov 2010 04:10:54 -0500 (EST) Received: from m2.gw.fujitsu.co.jp ([10.0.50.72]) by fgwmail7.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id oAF9Aps2021683 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Mon, 15 Nov 2010 18:10:52 +0900 Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 64D0545DE4F for ; Mon, 15 Nov 2010 18:10:51 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.fujitsu.co.jp [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 3714845DE51 for ; Mon, 15 Nov 2010 18:10:51 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 089E2E08003 for ; Mon, 15 Nov 2010 18:10:51 +0900 (JST) Received: from m106.s.css.fujitsu.com (m106.s.css.fujitsu.com [10.249.87.106]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id A81E91DB803A for ; Mon, 15 Nov 2010 18:10:50 +0900 (JST) From: KOSAKI Motohiro Subject: Re: fadvise DONTNEED implementation (or lack thereof) In-Reply-To: <1289810825.2109.469.camel@laptop> References: <1289810825.2109.469.camel@laptop> Message-Id: <20101115180153.BF18.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Date: Mon, 15 Nov 2010 18:10:49 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Peter Zijlstra Cc: kosaki.motohiro@jp.fujitsu.com, Minchan Kim , Ben Gamari , linux-kernel@vger.kernel.org, rsync@lists.samba.org, linux-mm@kvack.org, Wu Fengguang List-ID: > > I wonder what's the problem in Peter's patch 'drop behind'. > > http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg179576.html > > > > Could anyone tell me why it can't accept upstream? > > Read the thread, its quite clear nobody got convinced it was a good idea > and wanted to fix the use-once policy, then Rik rewrote all of > page-reclaim. If my understand is correct, rsync touch data twice (for a hash calculation and for a copy). then, currect used-once-heuristics seems still doesn't work. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org