Charles,


> > 3. Garbage collector may later copy the bad page without 
> > checking crc (!)
> > to a new block and assign it a (new) good crc.
> 
> There is no crc, but there is ecc. YAFFS should be applying 
> ECC during gc too 
> as it is part of the standard read. THis will fix single bit 
> errors, but not 
> partially written pages.

Sorry, I misused crc in place of ecc.
I am worried that gc may copy out a bad page and assign it a new 
good ecc. Then the read will not be able to see a problem with this
page. Maybe there should be a check in gc for a good ecc before copy.

Sergei
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