From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964944AbXCZJzo (ORCPT ); Mon, 26 Mar 2007 05:55:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965042AbXCZJzo (ORCPT ); Mon, 26 Mar 2007 05:55:44 -0400 Received: from lazybastard.de ([212.112.238.170]:59874 "EHLO longford.lazybastard.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964944AbXCZJzm (ORCPT ); Mon, 26 Mar 2007 05:55:42 -0400 Date: Mon, 26 Mar 2007 11:51:13 +0200 From: =?utf-8?B?SsO2cm4=?= Engel To: David Woodhouse Cc: David Lang , Thomas Gleixner , Matt Mackall , Josh Boyer , Artem Bityutskiy , Linux Kernel Mailing List , Frank Haverkamp , Christoph Hellwig Subject: Re: [PATCH 00/22 take 3] UBI: Unsorted Block Images Message-ID: <20070326095113.GA22118@lazybastard.org> References: <20070321110528.GC3785@lazybastard.org> <1174476334.10840.49.camel@localhost.localdomain> <20070325200826.GA19691@lazybastard.org> <20070325225528.GD19691@lazybastard.org> <1174866394.2866.2.camel@shinybook.infradead.org> <20070326000149.GE19691@lazybastard.org> <1174868485.20505.284.camel@pmac.infradead.org> <20070326010443.GF19691@lazybastard.org> <1174902357.20505.292.camel@pmac.infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1174902357.20505.292.camel@pmac.infradead.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 26 March 2007 10:45:57 +0100, David Woodhouse wrote: > > No, on NAND flash it's a limitation of the hardware. The number of write > cycles you can perform to a given page is limited. Exceed it and the > contents of that page become undefined due to leakage, until you next > erase it. Are you sure? Do you have any specs or similar that state this? So far I have only encountered this limitation by word of mouth. And such a myth coming from ECC effects is nothing that would surprise me. Jörn -- The cheapest, fastest and most reliable components of a computer system are those that aren't there. -- Gordon Bell, DEC labratories