On Tue, Mar 11, 2025 at 10:00:28PM -0700, Luis Chamberlain wrote: > We should take time to validate each block driver before enabling > support for larger logical block sizes, so that those that didn't > have support stay that way and don't need modifications. > > Li Wang reported this as a regression on LTP via: > > testcases/kernel/syscalls/ioctl/ioctl_loop06 > > Which uses the loopback driver to enable larger logical block sizes > first with LOOP_CONFIGURE and then LOOP_SET_BLOCK_SIZE. While > I see no reason why the loopback block driver can't support > larger logical block sizes than PAGE_SIZE, leave this validation > step as a secondary effort for each block driver. This doesn't really make sense. We don't want a flag that caps driver controlled values at a arbitrary value (and then not used it at all in the patch). If you need extra per-driver validatation, do it in the driver.
