queue_atomic_write_unit_max_bytes
queue_atomic_write_unit_max_bytes(bd_queue),
if (bio->bi_iter.bi_size > queue_atomic_write_unit_max_bytes(q))
if (blk_rq_bytes(req) > queue_atomic_write_unit_max_bytes(q))
return queue_atomic_write_unit_max_bytes(bdev_get_queue(bdev));