Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932539Ab0KOH2n (ORCPT ); Mon, 15 Nov 2010 02:28:43 -0500 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:53239 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757505Ab0KOH2m (ORCPT ); Mon, 15 Nov 2010 02:28:42 -0500 X-SecurityPolicyCheck-FJ: OK by FujitsuOutboundMailChecker v1.3.1 From: KOSAKI Motohiro To: Minchan Kim Subject: Re: fadvise DONTNEED implementation (or lack thereof) 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 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 X-Mailer: Becky! ver. 2.50.07 [ja] Date: Mon, 15 Nov 2010 16:28:32 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1248 Lines: 31 > 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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/