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block/export: report flush errors

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Propagate the flush return value since errors are possible.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20200924151549.913737-11-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2020-09-24 16:15:46 +01:00
parent 7185c85776
commit 0534b1b227
1 changed files with 7 additions and 4 deletions
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11
block/export/vhost-user-blk-server.c
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@ -78,11 +78,11 @@ vu_block_discard_write_zeroes(VuBlockReq *req, struct iovec *iov,
return -EINVAL;
}
static void coroutine_fn vu_block_flush(VuBlockReq *req)
static int coroutine_fn vu_block_flush(VuBlockReq *req)
{
VuBlockDev *vdev_blk = get_vu_block_device_by_server(req->server);
BlockBackend *backend = vdev_blk->backend;
blk_co_flush(backend);
return blk_co_flush(backend);
}
static void coroutine_fn vu_block_virtio_process_req(void *opaque)
@ -152,8 +152,11 @@ static void coroutine_fn vu_block_virtio_process_req(void *opaque)
break;
}
case VIRTIO_BLK_T_FLUSH:
vu_block_flush(req);
req->in->status = VIRTIO_BLK_S_OK;
if (vu_block_flush(req) == 0) {
req->in->status = VIRTIO_BLK_S_OK;
} else {
req->in->status = VIRTIO_BLK_S_IOERR;
}
break;
case VIRTIO_BLK_T_GET_ID: {
size_t size = MIN(iov_size(&elem->in_sg[0], in_num),