On Thu, Nov 26, 2020 at 07:00:48PM +0100, Jan Kara wrote: > > I don't think hd_struct holds a reference to block_device, does it? > > bdev_alloc() now just assigns bdev->bd_part->bdev = bdev... > > Now I understood this is probably correct - each partition (including > gendisk as 0 partition) holds the initial bdev reference and only when > corresponding kobject is getting destroyed we stop holding onto that > reference. Right? Yes.