From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755294Ab2FWPxi (ORCPT ); Sat, 23 Jun 2012 11:53:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53544 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754157Ab2FWPxh (ORCPT ); Sat, 23 Jun 2012 11:53:37 -0400 Message-ID: <4FE5E66C.6080309@redhat.com> Date: Sat, 23 Jun 2012 11:53:16 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: Kamezawa Hiroyuki CC: Minchan Kim , John Stultz , "linux-mm@kvack.org" , LKML , Mel Gorman , KOSAKI Motohiro , Johannes Weiner , Andrea Arcangeli , Andrew Morton , Anton Vorontsov , Pekka Enberg , Wu Fengguang , Hugh Dickins Subject: Re: RFC: Easy-Reclaimable LRU list References: <4FE012CD.6010605@kernel.org> <4FE37434.808@linaro.org> <4FE41752.8050305@kernel.org> <4FE549E8.2050905@jp.fujitsu.com> In-Reply-To: <4FE549E8.2050905@jp.fujitsu.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/23/2012 12:45 AM, Kamezawa Hiroyuki wrote: > I think this is interesting approach. Major concern is how to guarantee > EReclaimable > pages are really EReclaimable...Do you have any idea ? madviced pages > are really EReclaimable ? I suspect the EReclaimable pages can only be clean page cache pages that are not mapped by any processes. Once somebody tries to use the page, mark_page_accessed will move it to another list. > A (very) small concern is will you use one more page-flags for this ? ;) This could be an issue on a 32 bit system, true. -- All rights reversed From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx171.postini.com [74.125.245.171]) by kanga.kvack.org (Postfix) with SMTP id 700886B02C2 for ; Sat, 23 Jun 2012 11:53:31 -0400 (EDT) Message-ID: <4FE5E66C.6080309@redhat.com> Date: Sat, 23 Jun 2012 11:53:16 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: RFC: Easy-Reclaimable LRU list References: <4FE012CD.6010605@kernel.org> <4FE37434.808@linaro.org> <4FE41752.8050305@kernel.org> <4FE549E8.2050905@jp.fujitsu.com> In-Reply-To: <4FE549E8.2050905@jp.fujitsu.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Kamezawa Hiroyuki Cc: Minchan Kim , John Stultz , "linux-mm@kvack.org" , LKML , Mel Gorman , KOSAKI Motohiro , Johannes Weiner , Andrea Arcangeli , Andrew Morton , Anton Vorontsov , Pekka Enberg , Wu Fengguang , Hugh Dickins On 06/23/2012 12:45 AM, Kamezawa Hiroyuki wrote: > I think this is interesting approach. Major concern is how to guarantee > EReclaimable > pages are really EReclaimable...Do you have any idea ? madviced pages > are really EReclaimable ? I suspect the EReclaimable pages can only be clean page cache pages that are not mapped by any processes. Once somebody tries to use the page, mark_page_accessed will move it to another list. > A (very) small concern is will you use one more page-flags for this ? ;) This could be an issue on a 32 bit system, true. -- All rights reversed -- 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