qemu_iovec_init_external(&acb->hd_qiov, &acb->hd_iov, 1);
acb->hd_aiocb = bdrv_aio_readv(bs->backing_hd, acb->sector_num,
&acb->hd_qiov, acb->n, qcow_aio_read_cb, acb);
- if (acb->hd_aiocb == NULL)
+ if (acb->hd_aiocb == NULL) {
+ ret = -EIO;
goto done;
+ }
} else {
/* Note: in this case, no need to wait */
memset(acb->buf, 0, 512 * acb->n);
}
} else if (acb->cluster_offset & QCOW_OFLAG_COMPRESSED) {
/* add AIO support for compressed blocks ? */
- if (decompress_cluster(bs, acb->cluster_offset) < 0)
+ if (decompress_cluster(bs, acb->cluster_offset) < 0) {
+ ret = -EIO;
goto done;
+ }
memcpy(acb->buf,
s->cluster_cache + index_in_cluster * 512, 512 * acb->n);
goto redo;
acb->hd_aiocb = bdrv_aio_readv(bs->file,
(acb->cluster_offset >> 9) + index_in_cluster,
&acb->hd_qiov, acb->n, qcow_aio_read_cb, acb);
- if (acb->hd_aiocb == NULL)
+ if (acb->hd_aiocb == NULL) {
+ ret = -EIO;
goto done;
+ }
}
return;
(cluster_offset >> 9) + index_in_cluster,
&acb->hd_qiov, acb->n,
qcow_aio_write_cb, acb);
- if (acb->hd_aiocb == NULL)
+ if (acb->hd_aiocb == NULL) {
+ ret = -EIO;
goto done;
+ }
return;
done: