From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 79E4C8D0017 for ; Mon, 15 Nov 2010 02:28:36 -0500 (EST) Received: from m6.gw.fujitsu.co.jp ([10.0.50.76]) by fgwmail6.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id oAF7SYOM016884 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Mon, 15 Nov 2010 16:28:34 +0900 Received: from smail (m6 [127.0.0.1]) by outgoing.m6.gw.fujitsu.co.jp (Postfix) with ESMTP id EDFBC45DE51 for ; Mon, 15 Nov 2010 16:28:33 +0900 (JST) Received: from s6.gw.fujitsu.co.jp (s6.gw.fujitsu.co.jp [10.0.50.96]) by m6.gw.fujitsu.co.jp (Postfix) with ESMTP id C995145DE4E for ; Mon, 15 Nov 2010 16:28:33 +0900 (JST) Received: from s6.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s6.gw.fujitsu.co.jp (Postfix) with ESMTP id 757FC1DB8015 for ; Mon, 15 Nov 2010 16:28:33 +0900 (JST) Received: from m105.s.css.fujitsu.com (m105.s.css.fujitsu.com [10.249.87.105]) by s6.gw.fujitsu.co.jp (Postfix) with ESMTP id 1EA4DE78004 for ; Mon, 15 Nov 2010 16:28:33 +0900 (JST) From: KOSAKI Motohiro Subject: Re: fadvise DONTNEED implementation (or lack thereof) In-Reply-To: References: <20101115160413.BF0F.A69D9226@jp.fujitsu.com> Message-Id: <20101115162713.BF12.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Mon, 15 Nov 2010 16:28:32 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Minchan Kim Cc: kosaki.motohiro@jp.fujitsu.com, Ben Gamari , linux-kernel@vger.kernel.org, rsync@lists.samba.org, linux-mm@kvack.org, Peter Zijlstra , Wu Fengguang List-ID: > On Mon, Nov 15, 2010 at 4:09 PM, KOSAKI Motohiro > wrote: > >> > Because we have an alternative solution already. please try memcgroup :) > >> > >> I think memcg could be a solution of them but fundamental solution is > >> that we have to cure it in VM itself. > >> I feel it's absolutely absurd to enable and use memcg for amending it. > >> > >> 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? > > > > I don't know the reason. And this one looks reasonable to me. I'm curious the above > > patch solve rsync issue or not. > > Minchan, have you tested it yourself? > > Still yet. :) > If we all think it's reasonable, it would be valuable to adjust it > with current mmotm and see the effect. Who can make rsync like io pattern test suite? a code change is easy. but to comfirm justification is more harder 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