rqv_allocate
rqv_allocate_at
rqv_change_access
rqv_create_segment
rqv_free
rq_get_buffer_limit
rqe_a_load_io_job
rqe_s_load_io_job
rqv_map_physical
rq_move_data
rq_validate_buffer
rq_wait_iors