Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933394AbZKAABP (ORCPT ); Sat, 31 Oct 2009 20:01:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933360AbZKAABP (ORCPT ); Sat, 31 Oct 2009 20:01:15 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34261 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933348AbZKAABO (ORCPT ); Sat, 31 Oct 2009 20:01:14 -0400 Message-ID: <4AECCF6A.4020206@redhat.com> Date: Sat, 31 Oct 2009 19:59:38 -0400 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20090922 Fedora/3.0-3.9.b4.fc12 Lightning/1.0pre Thunderbird/3.0b4 MIME-Version: 1.0 To: Pavel Machek CC: David Rientjes , Andrew Morton , Mel Gorman , stable@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Frans Pop , Jiri Kosina , Sven Geggus , Karol Lewandowski , Tobias Oetiker , KOSAKI Motohiro , Pekka Enberg , Christoph Lameter , Stephan von Krawczynski , kernel-testers@vger.kernel.org Subject: Re: [PATCH 2/3] page allocator: Do not allow interrupts to use ALLOC_HARDER References: <1256650833-15516-1-git-send-email-mel@csn.ul.ie> <1256650833-15516-3-git-send-email-mel@csn.ul.ie> <20091027130924.fa903f5a.akpm@linux-foundation.org> <20091031184054.GB1475@ucw.cz> <20091031201158.GB29536@elf.ucw.cz> In-Reply-To: <20091031201158.GB29536@elf.ucw.cz> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 623 Lines: 17 On 10/31/2009 04:11 PM, Pavel Machek wrote: > But we can't guarantee that enough memory will be ready in the > reserves. So if realtime task relies on it, it is broken, and will > fail to meet its deadlines from time to time. Any realtime task that does networking (which may be the majority of realtime tasks) relies on the kernel memory allocator. -- All rights reversed. -- 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/