Re: [PATCH 22/22] p5326: perf tests for MIDX bitmaps

There is slight overhead in "simulated clone", "simulated partial
clone", and "clone (partial bitmap)". Unsurprisingly, that overhead is
due to using the MIDX's reverse index to map between bit positions and
MIDX positions.

Thanks - it's great to see that accessing a MIDX bitmap doesn't add much
overhead (as compared to accessing a single-pack bitmap of the same
size).

All the remaining patches up to and including this one look good.
Overall, I did have some comments here and there, but I am happy with
the overall design.