8d65269fe806 ("block: add a bdev_kobj helper")
985e233e96e5 ("btrfs: add btrfs_sysfs_remove_device helper")
178a16c94041 ("btrfs: add btrfs_sysfs_add_device helper")
bffac4b5435a ("Merge tag 'for-5.9-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux")