On Fri, Oct 15, 2021 at 4:53 PM Luis Chamberlain <mcgrof@xxxxxxxxxx> wrote: > > We know we don't need del_gendisk() if we haven't added > the disk, so just skip it. This should fix a bug on older > kernels, as del_gendisk() became able to deal with > disks not added only recently, after the patch titled > "block: add flag for add_disk() completion notation". Perhaps put this in: commit $abbrev_commit ("block: add flag for add_disk() completion notation") ...format, but I can't seem to find that commit? If you're touching the changelog how about one that clarifies the impact and drops "we"? "del_gendisk() is not required if the disk has not been added. On kernels prior to commit $abbrev_commit ("block: add flag for add_disk() completion notation") it is mandatory to not call del_gendisk() if the underlying device has not been through device_add()." Fixes: 41cd8b70c37a ("libnvdimm, btt: add support for blk integrity") With that you can add: Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>