Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 6 Oct 2001 11:31:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 6 Oct 2001 11:31:15 -0400 Received: from artax.karlin.mff.cuni.cz ([195.113.31.125]:61711 "EHLO artax.karlin.mff.cuni.cz") by vger.kernel.org with ESMTP id ; Sat, 6 Oct 2001 11:31:06 -0400 Date: Sat, 6 Oct 2001 17:31:26 +0200 (CEST) From: Mikulas Patocka To: Rik van Riel cc: Krzysztof Rusocki , linux-xfs@oss.sgi.com, linux-kernel@vger.kernel.org Subject: Re: %u-order allocation failed In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="1908636959-1328101436-1002382286=:32345" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime@docserver.cac.washington.edu for more info. --1908636959-1328101436-1002382286=:32345 Content-Type: TEXT/PLAIN; charset=US-ASCII On Sat, 6 Oct 2001, Mikulas Patocka wrote: > On Sat, 6 Oct 2001, Rik van Riel wrote: > > > On Sat, 6 Oct 2001, Mikulas Patocka wrote: > > > > > Buddy allocator is broken - kill it. Or at least do not misuse it for > > > anything except kernel or driver initialization. > > > > Please send patches to get rid of the buddy allocator while > > still making it possible to allocate contiguous chunks of > > memory. > > > > If you have any idea on how to fix things, this would be a > > good time to let us know. > > Here goes the fix. (note that I didn't try to compile it so there may be > bugs, but you see the point). > > kmalloc should be fixed too (used badly for example in select.c - and yes > - I have seen real world bugreports for poll randomly failing with > ENOMEM), but it will be hard to audit all drivers that they do not try to > use dma on kmallocated memory. This is enhanced version of a patch that fixes select and poll as well. Again - not compiled, not tried. 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