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To me, 1 feels most correct cause while the other two fix hugepages, there seem to be lurking bugs since we aren't implementing domainSetPathLabel.
I work on #1 a while and I think we can do a lot good here. Yet while I'm convinced at the changes this is currently a debugging nightmare. I guess it wants to become a 2018 submission.
Note: I'll not user reply-to onto this thread to keep threading somewhat sane. Also the new submission, while inspired by this discussion, is a totally separate thing.
So for now keep this hugepage patch out of consideration when looking at applying all those with many +1's.
So as I expected the hugepage patch of this series will be covered by the new series that I submit. But I wanted to ask for all the others changes in the current series here to be considered - most have one or two acks already. Let me know if more is needed to commit them.