linux-kernel - Re: swap file over jffs2 partition

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Message-ID: <47CAB23C.1010602@davidnewall.com>
Date:	Mon, 03 Mar 2008 00:27:16 +1030
From:	David Newall <davidn@...idnewall.com>
To:	Bernd Petrovitsch <bernd@...mix.at>
CC:	Dimitrios Apostolou <jimis@....net>, linux-kernel@...r.kernel.org
Subject: Re: swap file over jffs2 partition

Bernd Petrovitsch wrote:
> The wear-levelling only makes all erase blocks/chunks/... wear out at
> the same rate (at least more or less). It doesn't avoid or reduce
> wearing out, it just distributes it.
>   

Surely a unit with one defective block and a squillion good blocks is
faulty.  Sure it is.  It has a fault, which is what it means to be
faulty.  Spread the wear of that one block over all squillion and one
blocks and you get a much longer lifetime.  It seems intuitive that
distributing wear significantly increases time to failure.
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