Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751609AbaJZMnx (ORCPT ); Sun, 26 Oct 2014 08:43:53 -0400 Received: from galahad.ideasonboard.com ([185.26.127.97]:46452 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751357AbaJZMnw (ORCPT ); Sun, 26 Oct 2014 08:43:52 -0400 From: Laurent Pinchart To: Michal Nazarewicz 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 , Weijie Yang , Andrew Morton Subject: Re: [PATCH v2 3/4] mm: cma: Ensure that reservations never cross the low/high mem boundary Date: Sun, 26 Oct 2014 14:43:52 +0200 Message-ID: <1436531.s0VJY8ZaKv@avalon> User-Agent: KMail/4.12.5 (Linux/3.16.5-gentoo; KDE/4.12.5; x86_64; ; ) In-Reply-To: References: <1414145922-26042-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> <1414145922-26042-4-git-send-email-laurent.pinchart+renesas@ideasonboard.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday 24 October 2014 18:26:58 Michal Nazarewicz wrote: > On Fri, Oct 24 2014, Laurent Pinchart wrote: > > Commit 95b0e655f914 ("ARM: mm: don't limit default CMA region only to > > low memory") extended CMA memory reservation to allow usage of high > > memory. It relied on commit f7426b983a6a ("mm: cma: adjust address limit > > to avoid hitting low/high memory boundary") to ensure that the reserved > > block never crossed the low/high memory boundary. While the > > implementation correctly lowered the limit, it failed to consider the > > case where the base..limit range crossed the low/high memory boundary > > with enough space on each side to reserve the requested size on either > > low or high memory. > > > > Rework the base and limit adjustment to fix the problem. The function > > now starts by rejecting the reservation altogether for fixed > > reservations that cross the boundary, tries to reserve from high memory > > first and then falls back to low memory. > > > > Signed-off-by: Laurent Pinchart > > > > Acked-by: Michal Nazarewicz Thank you. Can we get this series merged in v3.18-rc ? -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/