Pull MD updates from Song:
"1. Make rdev add/remove independent from daemon thread, by Yu Kuai;
2. Refactor code around quiesce() and mddev_suspend(), by Yu Kuai."
* tag 'md-next-
20230927' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
md: replace deprecated strncpy with memcpy
md/md-linear: Annotate struct linear_conf with __counted_by
md: don't check 'mddev->pers' and 'pers->quiesce' from suspend_lo_store()
md: don't check 'mddev->pers' from suspend_hi_store()
md-bitmap: suspend array earlier in location_store()
md-bitmap: remove the checking of 'pers->quiesce' from location_store()
md: don't rely on 'mddev->pers' to be set in mddev_suspend()
md: initialize 'writes_pending' while allocating mddev
md: initialize 'active_io' while allocating mddev
md: delay remove_and_add_spares() for read only array to md_start_sync()
md: factor out a helper rdev_addable() from remove_and_add_spares()
md: factor out a helper rdev_is_spare() from remove_and_add_spares()
md: factor out a helper rdev_removeable() from remove_and_add_spares()
md: delay choosing sync action to md_start_sync()
md: factor out a helper to choose sync action from md_check_recovery()
md: use separate work_struct for md_start_sync()