I'm not 100% sure about this patch - it changes the tnode/level0
structure around a bit to try and lessen the need for chunkgroups on
large cards.

The patch probably isn't suitable to go straight in, but if someone has
some comments on it, that would be good.

With this patch our random read speed on 512MB NAND chips increased from
500kB/s to 710kB/s.

Thanks,
Andre
-- 
Bluewater Systems Ltd - ARM Technology Solutions Centre

       Andre Renaud                             Bluewater Systems Ltd
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