From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-la0-f41.google.com (mail-la0-f41.google.com [209.85.215.41]) by kanga.kvack.org (Postfix) with ESMTP id E33936B0069 for ; Sun, 26 Oct 2014 08:43:52 -0400 (EDT) Received: by mail-la0-f41.google.com with SMTP id pn19so4548851lab.14 for ; Sun, 26 Oct 2014 05:43:51 -0700 (PDT) Received: from galahad.ideasonboard.com (galahad.ideasonboard.com. [2001:4b98:dc2:45:216:3eff:febb:480d]) by mx.google.com with ESMTPS id k17si15329367lab.102.2014.10.26.05.43.50 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 26 Oct 2014 05:43:50 -0700 (PDT) From: Laurent Pinchart 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> 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: owner-linux-mm@kvack.org List-ID: 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 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, 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