Re: [Yaffs] Does Yaffs2 uses NAND Flash SPARE AREA at all?

Hi Charles,

Thanks for the clarification! Could you point me to known good port
of source code for (yaffs2 + mtd subsystem) with linux 2.6.28+ kernel,
on IA32.

Any pointers are very much appreciated.

Thanks,
-Subba

On Thu, May 20, 2010 at 6:07 PM, Charles Manning
<manningc2@actrix.gen.nz> wrote:
> On Friday 21 May 2010 12:46:37 subbarao mungara wrote:
>> Hi,
>>
>>   When I traced the calls to a mtd nand flash device driver, while
>> copying a big file to yaffs2 file system. I never saw the driver's
>> ecc.writeoob routine being at all but the file contents get copied
>> correctly.
>>   I am wondering if yaffs2 ever writes to NAND flash OOB area at all?
>
>
> It depends on whether or not you're using inband tags.
>
> If the inband tags are used then the tags are stored in the data area.
> Otherwise the tags will be stored in the spare area.
>
> Using the spare area is almost always considerably faster.
>
> -- Charles
>
>
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