cam_iosched_limiter_caniop
rv = cam_iosched_limiter_caniop(ios, bp);
rv = cam_iosched_limiter_caniop(ios, bp);
cam_iosched_limiter_caniop(&isc->write_stats, wbp) == 0;
cam_iosched_limiter_caniop(&isc->read_stats, rbp) == 0;
if (bp == NULL || cam_iosched_limiter_caniop(&isc->trim_stats, bp) != 0)