From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx175.postini.com [74.125.245.175]) by kanga.kvack.org (Postfix) with SMTP id 189736B00A9 for ; Mon, 4 Feb 2013 18:29:27 -0500 (EST) Received: by mail-ia0-f172.google.com with SMTP id u8so8841061iag.31 for ; Mon, 04 Feb 2013 15:29:26 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20130204150657.6d05f76a.akpm@linux-foundation.org> References: <1359973626-3900-1-git-send-email-m.szyprowski@samsung.com> <20130204150657.6d05f76a.akpm@linux-foundation.org> Date: Tue, 5 Feb 2013 08:29:26 +0900 Message-ID: Subject: Re: [PATCH] mm: cma: fix accounting of CMA pages placed in high memory From: Kyungmin Park Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Marek Szyprowski , linux-mm@kvack.org, linux-kernel@vger.kernel.org, minchan@kernel.org, mgorman@suse.de On Tue, Feb 5, 2013 at 8:06 AM, Andrew Morton wrote: > On Mon, 04 Feb 2013 11:27:05 +0100 > Marek Szyprowski wrote: > >> The total number of low memory pages is determined as >> totalram_pages - totalhigh_pages, so without this patch all CMA >> pageblocks placed in highmem were accounted to low memory. > > What are the end-user-visible effects of this bug? Even though CMA is located at highmem. LowTotal has more than lowmem address spaces. e.g., lowmem : 0xc0000000 - 0xdf000000 ( 496 MB) LowTotal: 555788 kB > > (This information is needed so that others can make patch-scheduling > decisions and should be included in all bugfix changelogs unless it is > obvious). CMA Highmem support is new feature. so don't need to go stable tree. Thank you, Kyungmin Park > > -- > 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 -- 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