I will check it out, thank you, Charles.
Another question, my arm kernel (patched from linux-2.6.20-rc1)  has a 4GB 
limitation for MTD partition(the data type of mtd->size is 32bit integer, it 
just overflowed for 4GB size!), so how to create partition as large as 6GB,  
even 8GB?

>From: Charles Manning <manningc2@actrix.gen.nz>
>To: yaffs@lists.aleph1.co.uk
>Subject: Re: [Yaffs] How to use YAFFS2 on large NAND partition(4GB)?
>Date: Fri, 30 Mar 2007 07:45:26 +1200
>
>On Friday 30 March 2007 06:57, Tian Jin wrote:
> > Hi, I know YAFFS2 has a NAND partition size limitation of 2GB, but I 
>have
> > to use a 3~4GB large NAND partition(3 or 4 x 1GB NAND chips) to storage
> > audio data.
>
>That limit was removed a while ago. People are using YAFFS on partitions at
>least as large as 6GBytes and I have tested up to 8GB on simulations.
>
>-- CHarles
>
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