From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 4D6086B0069 for ; Sat, 19 Nov 2011 13:09:34 -0500 (EST) Received: by bke17 with SMTP id 17so6293516bke.14 for ; Sat, 19 Nov 2011 10:09:30 -0800 (PST) Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes Subject: Re: [Linaro-mm-sig] [PATCHv17 0/11] Contiguous Memory Allocator References: <1321634598-16859-1-git-send-email-m.szyprowski@samsung.com> Date: Sat, 19 Nov 2011 19:09:23 +0100 MIME-Version: 1.0 Content-Transfer-Encoding: Quoted-Printable From: "Michal Nazarewicz" Message-ID: In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: sandeep patil Cc: Marek Szyprowski , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-mm@kvack.org, linaro-mm-sig@lists.linaro.org, Daniel Walker , Russell King , Arnd Bergmann , Jonathan Corbet , Mel Gorman , Dave Hansen , Jesse Barker , Kyungmin Park , Ankita Garg , Andrew Morton , KAMEZAWA Hiroyuki >> On Fri, 18 Nov 2011 22:20:48 +0100, sandeep patil wrote: >>> So, i guess my question is, until all the migration failures are >>> tracked down and fixed, is there a plan to retry the contiguous >>> allocation from a new range in the CMA region? > 2011/11/18 Michal Nazarewicz : >> No. Current CMA implementation will stick to the same range of pages= also >> on consequent allocations of the same size. On Sat, 19 Nov 2011 00:30:49 +0100, sandeep patil = wrote: > Doesn't that mean the drivers that fail to allocate from contiguous DM= A region > will fail, if the migration fails? Yes. I have some ideas how that could be mitigated. The easiest would be to = try another region to allocate from on failure. More complicated could be t= o try and wait for the I/O transfer to finish. I'll try to work on it during upcoming week. -- = 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org