linux-kernel - Re: [PATCH 00/22 take 3] UBI: Unsorted Block Images

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Message-ID: <20070326095113.GA22118@lazybastard.org>
Date:	Mon, 26 Mar 2007 11:51:13 +0200
From:	Jörn Engel <joern@...ybastard.org>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	David Lang <david.lang@...italinsight.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Matt Mackall <mpm@...enic.com>,
	Josh Boyer <jwboyer@...ux.vnet.ibm.com>,
	Artem Bityutskiy <dedekind@...radead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Frank Haverkamp <haver@...t.ibm.com>,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH 00/22 take 3] UBI: Unsorted Block Images

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
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