From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f181.google.com (mail-we0-f181.google.com [74.125.82.181]) by kanga.kvack.org (Postfix) with ESMTP id A841F6B008C for ; Thu, 26 Jun 2014 11:58:04 -0400 (EDT) Received: by mail-we0-f181.google.com with SMTP id q59so3996979wes.40 for ; Thu, 26 Jun 2014 08:58:02 -0700 (PDT) Received: from mail-wg0-x22f.google.com (mail-wg0-x22f.google.com [2a00:1450:400c:c00::22f]) by mx.google.com with ESMTPS id hh4si13135219wib.9.2014.06.26.08.57.51 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 26 Jun 2014 08:57:52 -0700 (PDT) Received: by mail-wg0-f47.google.com with SMTP id k14so3899607wgh.18 for ; Thu, 26 Jun 2014 08:57:50 -0700 (PDT) From: Michal Nazarewicz Subject: Re: [RFC] CMA page migration failure due to buffers on bh_lru In-Reply-To: <53A8D092.4040801@lge.com> References: <53A8D092.4040801@lge.com> Date: Thu, 26 Jun 2014 17:57:45 +0200 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Gioh Kim , Marek Szyprowski , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Joonsoo Kim , Mel Gorman , =?utf-8?B?7J206rG07Zi4?= 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? --=20 Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=3D./ `o ..o | Computer Science, Micha=C5=82 =E2=80=9Cmina86=E2=80=9D Nazarewicz = (o o) ooo +------ooO--(_)--Ooo-- -- 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