Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262359AbVERUiT (ORCPT ); Wed, 18 May 2005 16:38:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262356AbVERUiT (ORCPT ); Wed, 18 May 2005 16:38:19 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:3566 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S262359AbVERUiI (ORCPT ); Wed, 18 May 2005 16:38:08 -0400 Subject: Re: [PATCH] prevent NULL mmap in topdown model From: Arjan van de Ven To: Rik van Riel Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org In-Reply-To: References: Content-Type: text/plain Date: Wed, 18 May 2005 22:38:02 +0200 Message-Id: <1116448683.6572.43.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.0.4 (2.0.4-4) Content-Transfer-Encoding: 7bit X-Spam-Score: 3.7 (+++) X-Spam-Report: SpamAssassin version 2.63 on pentafluge.infradead.org summary: Content analysis details: (3.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.1 RCVD_IN_DSBL RBL: Received via a relay in list.dsbl.org [] 2.5 RCVD_IN_DYNABLOCK RBL: Sent directly from dynamic IP address [80.57.133.107 listed in dnsbl.sorbs.net] 0.1 RCVD_IN_SORBS RBL: SORBS: sender is listed in SORBS [80.57.133.107 listed in dnsbl.sorbs.net] X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 653 Lines: 16 On Wed, 2005-05-18 at 15:57 -0400, Rik van Riel wrote: > This (trivial) patch prevents the topdown allocator from allocating > mmap areas all the way down to address zero. It's not the prettiest > patch, so suggestions for improvement are welcome ;) it looks like you stop at brk() time.. isn't it better to just stop just above NULL instead?? Gives you more space and is less of an artificial barrier.. - 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/