Hi Huang,

Thanks for detailed description!  After reading your patchset and the
description above, I found that the basic part ([1/6] - [3/6]) of the
promotion patchset as follows can be the base for your patchset too.

https://lore.kernel.org/lkml/20211116013522.140575-1-ying.huang@intel.com (local)

Yeah, I agree with you. The first 3 patches of the above series are pretty
much the base of this series. We can add patch [3/5]-[5/5] after your 3
patches. Then add the patch [1/5] to include the statistics counters.

The main problem of that basic patchset is lacking review.  Can I ask
you to help to review that patchset, especially the common base [1/6] -
[3/6]?  If you think the rest of the patchset isn't good enough for you,
we can try to merge just [1/6] - [3/6] firstly.  Do you agree?

Sounds good to me. I would add my reviews within the next couple of days.

Thanks,
Hasan