Here's the final version of WRITE_SAME_16 implementation, and I've
verified that it works as expected by creating earger zero disk on
esxi and verified every is all 0 on the resulting disk. Please merge.
On concens about running out kernel memory, ESXi seems to be sending
only 1Mb writes, which is totally fine , and if it is truely a
problem, we can add a page in VPD to limit transfer length, it is not
implemented in this patch though.
Cheers.