Merge tag 'unit-conversion-cleanups-5.14_2021-06-03' of https://git.kernel.org/pub...

xfs: various unit conversions

Crafting the realtime file extent size hint fixes revealed various
opportunities to clean up unit conversions, so now that gets its own
series.

* tag 'unit-conversion-cleanups-5.14_2021-06-03' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux:
  xfs: remove unnecessary shifts
  xfs: clean up open-coded fs block unit conversions