Hi Christoph,
A kernel bug report was opened against Ubuntu [0]. This bug is a
regression introduced in mainline version v5.17-rc1 and made it's way
into v5.15 stable updates.
The following commit was identified as the cause of the regression in 5.15:
c6ce1c5dd327 ("block: rename GENHD_FL_NO_PART_SCAN to GENHD_FL_NO_PART")
I was hoping to get your feedback, since you are the patch author. Is
the best approach to revert this commit, since many third parties rely
on the name being GENHD_FL_NO_PART_SCAN in kernel headers? Is there a
specific need that you know of that requires this commit in the 5.15 and
earlier stable kernels?
Thanks,
Joe
[0] http://pad.lv/2053101