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Date: Mon, 27 Mar 2000 06:39:10 -0800
From: Scott Anderson <sanders@mvista.com>
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To: Alexander Larsson <alex@cendio.se>
CC: mtd@infradead.org, Bjorn Wesen <bjorn.wesen@axis.com>,
        SeokKuon Kwon <kwonsk@mutech.co.kr>
Subject: Re: Axis log based flash filesystem ported to 2.3 and MTD
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Alexander Larsson wrote:
> While i haven't read the M-systems patent I think the Axis fs doesn't
> violate it, because it uses no translation array. It is a fully
> log-structured filesystem directly on the flash memory, and not a flash to
> block device translator.

Let me give a bit more background.  I have *not* looked at Axis' filesystem
so my "guesses" should not be viewed as authoritative.  Figuring out the
patent implications was something that I hadn't yet gotten around to yet.

Thanks to Alexander, I may not have to.  I'm under the impression that Axis'
file system implements wear-leveling, so if there isn't an FTL, then the
file system itself must rotate through free blocks to prevent a given sector
from being worn out.  Is this correct?  If not, would you mind educating me?

Thanks!

    Scott Anderson		
    scott_anderson@mvista.com	MontaVista Software Inc.
    (408)328-9214		490 Potrero Ave.
    http://www.mvista.com	Sunnyvale, CA  94086


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