int coroutine_fn bdrv_co_flush(BlockDriverState *bs)
{
+ int ret;
+
if (bs->open_flags & BDRV_O_NO_FLUSH) {
return 0;
} else if (!bs->drv) {
return 0;
- } else if (bs->drv->bdrv_co_flush_to_disk) {
+ }
+
+ if (bs->drv->bdrv_co_flush_to_os) {
+ ret = bs->drv->bdrv_co_flush_to_os(bs);
+ if (ret < 0) {
+ return ret;
+ }
+ }
+
+ if (bs->drv->bdrv_co_flush_to_disk) {
return bs->drv->bdrv_co_flush_to_disk(bs);
} else if (bs->drv->bdrv_aio_flush) {
BlockDriverAIOCB *acb;