On Tue, Aug 27, 2024 at 3:20 PM John Garry <john.g.garry@xxxxxxxxxx> wrote: > > On 27/08/2024 04:22, Li Wang wrote: > > +linux-block, Jens > > > This change allows the loopback driver to handle larger block sizes > > larger than what? PAGE_SIZE? Yes, system should return EINVAL when the tested bsize is larger than PAGE_SIZE. But due to the loop_reconfigure_limits() cast it to 'unsined short' that never gets an expected error when testing invalid logical block size. That's why LTP/ioctl_loop06 failed on a system with 64k (ppc64le) pagesize (since kernel-v6.11-rc1 with patches): 9423c653fe6110 ("loop: Don't bother validating blocksize") fe3d508ba95bc6 ("block: Validate logical block size in blk_validate_limits()") -- Regards, Li Wang