Merge tag 'md-6.8-20240109' of https://git.kernel.org/pub/scm/linux/kernel/git/song...

Pull MD fixes from Song:

"1. Sparse warning since v6.0, by Bart;
 2. /proc/mdstat regression since v6.7, by Yu Kuai."

* tag 'md-6.8-20240109' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md/raid1: Use blk_opf_t for read and write operations
  md: Fix md_seq_ops() regressions