static int coroutine_fn bdrv_co_do_readv(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) { BlockDriver *drv = bs->drv; BdrvTrackedRequest req; int ret; if (!drv) { return -ENOMEDIUM; if (bdrv_check_request(bs, sector_num, nb_sectors)) { return -EIO; /* throttling disk read I/O */ if (bs->io_limits_enabled) { bdrv_io_limits_intercept(bs, false, nb_sectors); tracked_request_begin(&req, bs, sector_num, nb_sectors, false); ret = drv->bdrv_co_readv(bs, sector_num, nb_sectors, qiov); tracked_request_end(&req); return ret;