From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id E01056B00C9 for ; Mon, 23 Mar 2009 04:39:44 -0400 (EDT) Received: from d28relay02.in.ibm.com (d28relay02.in.ibm.com [9.184.220.59]) by e28smtp06.in.ibm.com (8.13.1/8.13.1) with ESMTP id n2N9feNF002562 for ; Mon, 23 Mar 2009 15:11:40 +0530 Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay02.in.ibm.com (8.13.8/8.13.8/NCO v9.2) with ESMTP id n2N9bu4E2306210 for ; Mon, 23 Mar 2009 15:07:56 +0530 Received: from d28av03.in.ibm.com (loopback [127.0.0.1]) by d28av03.in.ibm.com (8.13.1/8.13.3) with ESMTP id n2N9fNq8030568 for ; Mon, 23 Mar 2009 20:41:24 +1100 Date: Mon, 23 Mar 2009 15:11:11 +0530 From: Balbir Singh Subject: Re: [PATCH 0/5] Memory controller soft limit patches (v7) Message-ID: <20090323094111.GR24227@balbir.in.ibm.com> Reply-To: balbir@linux.vnet.ibm.com References: <20090319165713.27274.94129.sendpatchset@localhost.localdomain> <20090323125005.0d8a7219.kamezawa.hiroyu@jp.fujitsu.com> <20090323052247.GJ24227@balbir.in.ibm.com> <20090323151245.d6430aaa.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <20090323151245.d6430aaa.kamezawa.hiroyu@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: linux-mm@kvack.org, YAMAMOTO Takashi , lizf@cn.fujitsu.com, KOSAKI Motohiro , Rik van Riel , Andrew Morton List-ID: * KAMEZAWA Hiroyuki [2009-03-23 15:12:45]: > On Mon, 23 Mar 2009 10:52:47 +0530 > Balbir Singh wrote: > > I have one large swap partition, so I could not test the partial-swap > > scenario. > > > plz go ahead as you like, Seems no landing point now and I'd like to see > what I can, later. I'll send no ACK nor NACK, more. > > But please get ack from someone resposible for glorbal memory reclaim. > Especially for hooks in try_to_free_pages(). > > And please make it clear in documentation that > - Depends on the system but this may increase the usage of swap. > - Depends on the system but this may not work as the user expected as hard-limit. > The documentation mentions that soft limits take a long time before coming into affect. The use of the word "soft" over "hard" and the usage of this terminology in resource management clearly implies what you say in point (2). > Considering corner cases, this is a very complicated/usage-is-difficult feature. > > -Kame > > -- Balbir -- 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/ . Don't email: email@kvack.org