Merge tag 'md-next-20230729' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-6.6/block

Pull MD updates from Song:

"1. Deprecate bitmap file support, by Christoph Hellwig;
 2. Fix deadlock with md sync thread, by Yu Kuai;
 3. Refactor md io accounting, by Yu Kuai;
 4. Various non-urgent fixes by Li Nan, Yu Kuai, and Jack Wang."

* tag 'md-next-20230729' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md: (36 commits)
  md/md-bitmap: hold 'reconfig_mutex' in backlog_store()
  md/md-bitmap: remove unnecessary local variable in backlog_store()
  md/raid10: use dereference_rdev_and_rrdev() to get devices
  md/raid10: factor out dereference_rdev_and_rrdev()
  md/raid10: check replacement and rdev to prevent submit the same io twice
  md/raid1: Avoid lock contention from wake_up()
  md: restore 'noio_flag' for the last mddev_resume()
  md: don't quiesce in mddev_suspend()
  md: remove redundant check in fix_read_error()
  md/raid10: optimize fix_read_error
  md/raid1: prioritize adding disk to 'removed' mirror
  md/md-faulty: enable io accounting
  md/md-linear: enable io accounting
  md/md-multipath: enable io accounting
  md/raid10: switch to use md_account_bio() for io accounting
  md/raid1: switch to use md_account_bio() for io accounting
  raid5: fix missing io accounting in raid5_align_endio()
  md: also clone new io if io accounting is disabled
  md: move initialization and destruction of 'io_acct_set' to md.c
  md: deprecate bitmap file support
  ...

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