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From: David Woodhouse <dwmw2@infradead.org>
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To: Wojciech Kromer <krom@dgt-lab.com.pl>
Cc: mtd <linux-mtd@lists.infradead.org>
Subject: Re: JFFS2 on 8MB Flash-Chip conneted to MPC850 works extremly slow:( 
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Date: Fri, 07 Sep 2001 09:10:05 +0100
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krom@dgt-lab.com.pl said:
>  But writing my user partition (/dev/mtdblock4) destroys data from the
> begining of my chip ! What's wrong? 

Put printk statements in the glue functions which add the offset to the 
write request and pass it along. See if they're adding the correct offset. 

--
dwmw2