bdev_io_opt
return put_uint(argp, bdev_io_opt(bdev));
p->qlim->io_opt = cpu_to_be32(bdev_io_opt(bdev));
if (bdev_io_opt(dc->bdev))
d->stripe_size = bdev_io_opt(cached_bdev) >> SECTOR_SHIFT;
lim.io_opt = umax(block_size, bdev_io_opt(cached_bdev));
if (bdev_io_opt(bdev) > bdev_logical_block_size(bdev))
return roundup(last_page_size, bdev_io_opt(bdev));
opt_iosize = bdev_io_opt(mirror->rdev->bdev) >> 9;
id->nows = to0based(bdev_io_opt(bdev) / bdev_logical_block_size(bdev));
return bdev_io_opt(bd);