From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <486CD623.8030906@linux-foundation.org> Date: Thu, 03 Jul 2008 08:37:39 -0500 From: Christoph Lameter MIME-Version: 1.0 Subject: Re: [problem] raid performance loss with 2.6.26-rc8 on 32-bit x86 (bisected) References: <1214877439.7885.40.camel@dwillia2-linux.ch.intel.com> <20080701080910.GA10865@csn.ul.ie> <20080701175855.GI32727@shadowen.org> <20080701190741.GB16501@csn.ul.ie> <1214944175.26855.18.camel@dwillia2-linux.ch.intel.com> <20080702051759.GA26338@csn.ul.ie> <1215049766.2840.43.camel@dwillia2-linux.ch.intel.com> <20080703042750.GB14614@csn.ul.ie> <20080703050036.GD14614@csn.ul.ie> <1215064455.15797.4.camel@dwillia2-linux.ch.intel.com> In-Reply-To: <1215064455.15797.4.camel@dwillia2-linux.ch.intel.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Dan Williams Cc: Mel Gorman , Linus Torvalds , Andy Whitcroft , linux-mm@kvack.org, linux-kernel@vger.kernel.org, NeilBrown , babydr@baby-dragons.com, lee.schermerhorn@hp.com, a.beregalov@gmail.com, akpm@linux-foundation.org List-ID: What a convoluted description. Simply put: We clobber the nr_zones field because we write beyond the bounds of the node_zonelists[] array in struct pglist_data. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org