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Subject: Re: Preventing JFFS2 partial page writes?
From: Artem Bityutskiy <dedekind1@gmail.com>
To: Peter Barada <peter.barada@gmail.com>
Date: Wed, 22 Jun 2011 09:04:11 +0300
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On Tue, 2011-06-14 at 12:19 -0400, Peter Barada wrote:
> I'm using a Micron 512MB NAND which has an internal 4-bit ECC engine, 
> and am finding lots of ECC errors while using JFFS2.  The same NAND 
> works find using YAFFS so I know the underlying MTD driver works properly.
> 
> The big question I have is whether JFFS2 does partial page writes and if 
> so how to disable them.

JFFS2 does not use sub-pages so it should never do partial writes. I
think the ECC errors you see are because of JFFS2 using OOB area to
store clean markers.

-- 
Best Regards,
Artem Bityutskiy