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

Pull MD fixes from Song:

"1. Fix for clustered raid, by Guoqing Jiang.
 2. req_op fix, by Bart Van Assche.
 3. Fix race condition in raid recreate, by David Sloan."

* 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md: call __md_stop_writes in md_stop
  Revert "md-raid: destroy the bitmap after destroying the thread"
  md: Flush workqueue md_rdev_misc_wq in md_alloc()
  md/raid10: Fix the data type of an r10_sync_page_io() argument