> I have downloaded YAFFS from Aleph One. And I am tracing it's code now.
>
> I found that the document you write below：
> Wear leveling
>
> No wear leveling is explicitly used here. Instead we rely on two
> "strategies":
>
> · Reserving some blocks to cater for failure. You need to do this
> anyway with NAND. The main purpose behind wear leveling is to prevent some
> blocks getting more wear and failing. Since we expect, and handle, failure
> this is no longer as important.
>
> · The infrequent random block selection should prevent low-wear
> blocks getting "stuck".
>
> But I did not find the 「random block selection」 code section in YAFFS.
This has never been implemented. It is probably not required, but it would be
possible to add this quite simply.
-- CHarles
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