From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758060Ab2FZAMc (ORCPT ); Mon, 25 Jun 2012 20:12:32 -0400 Received: from LGEMRELSE7Q.lge.com ([156.147.1.151]:48570 "EHLO LGEMRELSE7Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757958Ab2FZAMa (ORCPT ); Mon, 25 Jun 2012 20:12:30 -0400 X-AuditID: 9c930197-b7c94ae0000037ff-e9-4fe8fe6d34d3 Message-ID: <4FE8FE70.6050107@kernel.org> Date: Tue, 26 Jun 2012 09:12:32 +0900 From: Minchan Kim User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 Newsgroups: gmane.linux.kernel.mm,gmane.linux.kernel To: Glauber Costa CC: "linux-mm@kvack.org" , LKML , Rik van Riel , Mel Gorman , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Johannes Weiner , Andrea Arcangeli , Andrew Morton , Anton Vorontsov , John Stultz , Pekka Enberg , Wu Fengguang , Hugh Dickins Subject: Re: RFC: Easy-Reclaimable LRU list References: <4FE012CD.6010605@kernel.org> <4FE82555.2010704@parallels.com> In-Reply-To: <4FE82555.2010704@parallels.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/25/2012 05:46 PM, Glauber Costa wrote: > On 06/19/2012 09:49 AM, Minchan Kim wrote: >> Hi everybody! >> >> Recently, there are some efforts to handle system memory pressure. >> >> 1) low memory notification - [1] >> 2) fallocate(VOLATILE) - [2] >> 3) fadvise(NOREUSE) - [3] >> >> For them, I would like to add new LRU list, aka "Ereclaimable" which >> is opposite of "unevictable". >> Reclaimable LRU list includes_easy_ reclaimable pages. >> For example, easy reclaimable pages are following as. >> >> 1. invalidated but remained LRU list. >> 2. pageout pages for reclaim(PG_reclaim pages) >> 3. fadvise(NOREUSE) >> 4. fallocate(VOLATILE) >> >> Their pages shouldn't stir normal LRU list and compaction might not >> migrate them, even. > What about other things moving memory like CMA ? Sorry for not being able to understand your point. Can you elaborate a bit more? -- Kind regards, Minchan Kim From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx160.postini.com [74.125.245.160]) by kanga.kvack.org (Postfix) with SMTP id C6F406B0152 for ; Mon, 25 Jun 2012 20:12:30 -0400 (EDT) Message-ID: <4FE8FE70.6050107@kernel.org> Date: Tue, 26 Jun 2012 09:12:32 +0900 From: Minchan Kim MIME-Version: 1.0 Subject: Re: RFC: Easy-Reclaimable LRU list References: <4FE012CD.6010605@kernel.org> <4FE82555.2010704@parallels.com> In-Reply-To: <4FE82555.2010704@parallels.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Glauber Costa Cc: "linux-mm@kvack.org" , LKML , Rik van Riel , Mel Gorman , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Johannes Weiner , Andrea Arcangeli , Andrew Morton , Anton Vorontsov , John Stultz , Pekka Enberg , Wu Fengguang , Hugh Dickins On 06/25/2012 05:46 PM, Glauber Costa wrote: > On 06/19/2012 09:49 AM, Minchan Kim wrote: >> Hi everybody! >> >> Recently, there are some efforts to handle system memory pressure. >> >> 1) low memory notification - [1] >> 2) fallocate(VOLATILE) - [2] >> 3) fadvise(NOREUSE) - [3] >> >> For them, I would like to add new LRU list, aka "Ereclaimable" which >> is opposite of "unevictable". >> Reclaimable LRU list includes_easy_ reclaimable pages. >> For example, easy reclaimable pages are following as. >> >> 1. invalidated but remained LRU list. >> 2. pageout pages for reclaim(PG_reclaim pages) >> 3. fadvise(NOREUSE) >> 4. fallocate(VOLATILE) >> >> Their pages shouldn't stir normal LRU list and compaction might not >> migrate them, even. > What about other things moving memory like CMA ? Sorry for not being able to understand your point. Can you elaborate a bit more? -- Kind regards, Minchan Kim -- 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