On Sat, Oct 21, 2023 at 08:58:32PM +0200, Richard Weinberger wrote: > Since commit 2736e8eeb0ccd ("block: use the holder as indication for exclusive opens") Overly long line here. > blkdev_put() requires a valid holder argument. > So, do so also in block2mtd to unbreak bdev->bd_holder refcounting. Otherwise looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>