From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lb0-f179.google.com (mail-lb0-f179.google.com [209.85.217.179]) by kanga.kvack.org (Postfix) with ESMTP id EA6F76B006C for ; Fri, 24 Oct 2014 12:34:52 -0400 (EDT) Received: by mail-lb0-f179.google.com with SMTP id l4so2854779lbv.38 for ; Fri, 24 Oct 2014 09:34:52 -0700 (PDT) Received: from mail-lb0-x236.google.com (mail-lb0-x236.google.com. [2a00:1450:4010:c04::236]) by mx.google.com with ESMTPS id ao5si7780279lbc.58.2014.10.24.09.34.50 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 24 Oct 2014 09:34:51 -0700 (PDT) Received: by mail-lb0-f182.google.com with SMTP id f15so1574387lbj.41 for ; Fri, 24 Oct 2014 09:34:50 -0700 (PDT) From: Michal Nazarewicz Subject: Re: [PATCH 1/4] mm: cma: Don't crash on allocation if CMA area can't be activated In-Reply-To: <1463193.4qGZjcvNod@avalon> References: <1414074828-4488-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> <1414074828-4488-2-git-send-email-laurent.pinchart+renesas@ideasonboard.com> <1463193.4qGZjcvNod@avalon> Date: Fri, 24 Oct 2014 18:34:46 +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: Laurent Pinchart Cc: Laurent Pinchart , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sh@vger.kernel.org, Marek Szyprowski , Russell King - ARM Linux , Joonsoo Kim > On Thursday 23 October 2014 18:53:36 Michal Nazarewicz wrote: >> As a matter of fact, this is present in kernels earlier than 3.17 but in >> the 3.17 the code has been moved from drivers/base/dma-contiguous.c to >> mm/cma.c so this might require separate stable patch. On Fri, Oct 24 2014, Laurent Pinchart w= rote: > That could be done, but I'm not sure if it's really worth it. The bug onl= y=20 > occurs when the CMA zone activation fails. I've ran into that case due to= a=20 > bug introduced in v3.18-rc1, but this shouldn't be the case for older ker= nel=20 > versions. Fair enough. --=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