From: Charles Manning <manningc2@actrix.gen.nz>
To: linux-mtd@lists.infradead.org
Cc: Vinit Agnihotri <vinit.agnihotri@gmail.com>
Subject: Re: Question about MTD Erase mechanism.
Date: Tue, 20 Feb 2007 20:29:33 +1300 [thread overview]
Message-ID: <200702202029.33870.manningc2@actrix.gen.nz> (raw)
In-Reply-To: <9b52d64c0702192241y2c778a54r17cea174eb8781d8@mail.gmail.com>
On Tuesday 20 February 2007 19:41, Vinit Agnihotri wrote:
> I have 1 question about MTD Erase mechanism.
>
> Say we have a MTD device with 'n' no. of blocks. Each block is of size
> 100Bytes. Once erased we can write 25bytes i.e. min_io_size is
> 25bytes. So once a block is erased I can perform 4 writes without
> erasing it again only if those 4 writes are not overlapping. But if
> any of those write is overlapping i.e. if re-write occurs then entire
> block have to be erased.
That's a pretty contrived example, and depends on the type of flash etc.
>
> So my question is who handles these types of conditions. I mean does
> hardware handles such conditions or software have to handle such
> situations? I mean who handles re-writing & erasures due to that???
Software of course. Hardware is pretty dumb stuff and cannot track and enforce
algorithmic rules like that.
>
>
> Thanks & Regards
> Vinit.
>
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
prev parent reply other threads:[~2007-02-20 7:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-20 6:41 Question about MTD Erase mechanism Vinit Agnihotri
2007-02-20 7:29 ` Charles Manning [this message]
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