Problem with new uapi header in Linux kernel 4.4+

[Christoph Hellwig]

Hi Scott,

> For what it is worth the kernel will soon have OPAL support built in 
> so you won't have to do this weird hack, and use a tool that is no
> longer maintained. 

What's the ETA for OPAL support?  We had a patch from Intel for it
half a year ago, but the submitter didn't follow up on the review
feedback.  (Same for the simple ATA security unlock scheme submitted
by someone else).