Merge branch 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into block-5.16

Pull MD fix from Song, fixing a raid1 regression with missing bitmap
updates.

* 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md/raid1: fix missing bitmap update w/o WriteMostly devices