From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751894AbYDED17 (ORCPT ); Fri, 4 Apr 2008 23:27:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751339AbYDED1v (ORCPT ); Fri, 4 Apr 2008 23:27:51 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:37292 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751331AbYDED1u (ORCPT ); Fri, 4 Apr 2008 23:27:50 -0400 Date: Fri, 4 Apr 2008 20:27:04 -0700 From: Andrew Morton To: David Brownell Cc: "Kyungmin Park" , "Josh Boyer" , linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, "Michael Trimarchi" , spi-devel-general@lists.sourceforge.net, dwmw2@infradead.org, linux-arm-kernel@lists.arm.linux.org.uk Subject: Re: [PATCH] jffs2 summary allocation Message-Id: <20080404202704.84e743d7.akpm@linux-foundation.org> In-Reply-To: <200804041941.35075.david-b@pacbell.net> References: <713171.37644.qm@web26213.mail.ukl.yahoo.com> <9c9fda240804041829r5a768b39n340926485aa12687@mail.gmail.com> <20080404184615.deaf3122.akpm@linux-foundation.org> <200804041941.35075.david-b@pacbell.net> X-Mailer: Sylpheed 2.4.8 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 4 Apr 2008 19:41:34 -0700 David Brownell wrote: > On Friday 04 April 2008, Andrew Morton wrote: > > This problem comes up pretty often. > > Which problem -- kmalloc(BIG)? Or dma(dma-unsafe-mem)? > Or something else? Code needing a large amount of memory, trying to kmalloc it, then getting into trouble, them using vmalloc, then getting into more trouble. This is kernel - order-0 allocations will always be the most robust.