From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com ([66.187.233.31]) by canuck.infradead.org with esmtps (Exim 4.43 #1 (Red Hat Linux)) id 1Cp9D2-0000Ia-TU for linux-mtd@lists.infradead.org; Thu, 13 Jan 2005 12:56:37 -0500 Message-ID: <41E6B637.9070202@redhat.com> Date: Thu, 13 Jan 2005 11:56:07 -0600 From: "David A. Marlin" MIME-Version: 1.0 To: tglx@linutronix.de References: <41E699F9.10704@redhat.com> <1105638483.5993.2.camel@lap02.tec.linutronix.de> In-Reply-To: <1105638483.5993.2.camel@lap02.tec.linutronix.de> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: MTD List Subject: Re: NAND fail testing List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Thomas Gleixner wrote: > > We have blocked the access to short writes. You can do the following: > > Erase a block from userspace with flash_erase > Write a page of all 0xff except one byte to the first page using > nandwrite > > Repeat until you get an error Would this not still 'write' all bytes in the page (even though they are 0xff and unchanged), causing them to also wear and possibly fail? d.marlin