From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752180AbaFZXXy (ORCPT ); Thu, 26 Jun 2014 19:23:54 -0400 Received: from lgeamrelo04.lge.com ([156.147.1.127]:42286 "EHLO lgeamrelo04.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751329AbaFZXXx (ORCPT ); Thu, 26 Jun 2014 19:23:53 -0400 X-Original-SENDERIP: 10.178.33.69 X-Original-MAILFROM: gioh.kim@lge.com Message-ID: <53ACAB82.6020201@lge.com> Date: Fri, 27 Jun 2014 08:23:46 +0900 From: Gioh Kim User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Michal Nazarewicz , Marek Szyprowski , linux-mm@kvack.org, linux-kernel@vger.kernel.org CC: Joonsoo Kim , Mel Gorman , =?UTF-8?B?7J206rG07Zi4?= Subject: Re: [RFC] CMA page migration failure due to buffers on bh_lru References: <53A8D092.4040801@lge.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2014-06-27 오전 12:57, Michal Nazarewicz 쓴 글: > On Tue, Jun 24 2014, Gioh Kim wrote: >> Hello, >> >> I am trying to apply CMA feature for my platform. >> My kernel version, 3.10.x, is not allocating memory from CMA area so that I applied >> a Joonsoo Kim's patch (https://lkml.org/lkml/2014/5/28/64). >> Now my platform can use CMA area effectively. >> >> But I have many failures to allocate memory from CMA area. >> I found the same situation to Laura Abbott's patch descrbing, >> https://lkml.org/lkml/2012/8/31/313, >> that releases buffer-heads attached at CPU's LRU list. >> >> If Joonsoo's patch is applied and/or CMA feature is applied more and more, >> buffer-heads problem is going to be serious definitely. >> >> Please look into the Laura's patch again. >> I think it must be applied with Joonsoo's patch. > > Just to make sure I understood you correctly, you're saying Laura's > patch at fixes your issue? > Yes, it is.