Verify-after-write on sub-pages

[David Lambert]

I am working on a project that requires high reliability of logged data 
which is written to a UBI file system on NAND. I have observed one 
hardware failure mode at elevated temperatures where some chips report 
that a write was successful even though a subsequent read indicates that 
this was not true. To mitigate this I enabled 
CONFIG_MTD_NAND_VERIFY_WRITE. Unfortunately I found this does not work 
on sub-pages which are used by UBI. As a workaround I have forced UBI 
not to use sub-pages, but I was curious if either there were plans to 
add this feature, or if anyone was working on implementing it?

Regards,

Dave.