Verify-after-write on sub-pages

[Artem Bityutskiy]

On Thu, 2011-01-27 at 09:51 -0600, David Lambert wrote:
> 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?

Yes, CONFIG_MTD_NAND_VERIFY_WRITE is broken sub-pages for very long
time. I doubt anyone is fixing this, you have a chance to do this :-)

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)