On Thu, Nov 28, 2019 at 07:15:09AM -0500, Martin K. Petersen wrote: > This mirrors single_lun in SCSI closely. I was hoping we could > eventually get rid of that travesty but if MMC needs something similar, > maybe it would be good to move that plumbing to block? Oh, I totally forgot about single_lun. Given that it is only set for ancient CD changers I'm not even sure that code works properly anymore. Having common code that is exercised regularly by mmc would certainly be better than the current SCSI code, but I'm not sure how well this is going to work out.