Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750910AbWBFKHv (ORCPT ); Mon, 6 Feb 2006 05:07:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750913AbWBFKHv (ORCPT ); Mon, 6 Feb 2006 05:07:51 -0500 Received: from gw1.cosmosbay.com ([62.23.185.226]:18113 "EHLO gw1.cosmosbay.com") by vger.kernel.org with ESMTP id S1750907AbWBFKHu (ORCPT ); Mon, 6 Feb 2006 05:07:50 -0500 Message-ID: <43E71FEC.6020506@cosmosbay.com> Date: Mon, 06 Feb 2006 11:07:40 +0100 From: Eric Dumazet User-Agent: Thunderbird 1.5 (Windows/20051201) MIME-Version: 1.0 To: Andrew Morton CC: bcrl@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH, V2] i386: instead of poisoning .init zone, change protection bits to force a fault References: <20060128235113.697e3a2c.akpm@osdl.org> <200601291620.28291.ioe-lkml@rameria.de> <20060129113312.73f31485.akpm@osdl.org> <43DD1FDC.4080302@cosmosbay.com> <20060129200504.GD28400@kvack.org> <43DD2C15.1090800@cosmosbay.com> <20060204144111.7e33569f.akpm@osdl.org> <43E7108A.8030001@cosmosbay.com> <20060206012809.3045207c.akpm@osdl.org> In-Reply-To: <20060206012809.3045207c.akpm@osdl.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (gw1.cosmosbay.com [172.16.8.80]); Mon, 06 Feb 2006 11:07:43 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 715 Lines: 19 Andrew Morton a ?crit : > But I'm inclined to drop the whole patch - I don't see how it can detect > any bugs which CONFIG_DEBUG_PAGEALLOC won't find. > If CONFIG_DEBUG_PAGEALLOC is selected, does a page freed by free_page(addr); guaranted not being reused later ? Anyway, the CONFIG_DEBUG_INITDATA was a temporary patch in order to track the accesses to non possible cpus percpu data. So if you feel all such accesses were cleaned, we can drop the patch... Eric - 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/