In message <Pine.NEB.4.64.0603221652400.24143@mail.netbsd.org>, Eduardo Horvath
 writes:
>The erasure issue is only visible if you allow sub-block writes.  Is that 
>something you're relly thinking about doing?  Is there any reason why you 
>would want to leave a block erased without immediately writing useful data 
>to it?

We are virtually guaranteed to have to allow writes smaller than a flash
device "block".

-s