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-rw-r--r--block/parallels.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/block/parallels.c b/block/parallels.c
index cc9445879d..15bc97b759 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -220,23 +220,20 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
if (bs->backing) {
int64_t nb_cow_sectors = to_allocate * s->tracks;
int64_t nb_cow_bytes = nb_cow_sectors << BDRV_SECTOR_BITS;
- QEMUIOVector qiov;
- struct iovec iov = {
- .iov_len = nb_cow_bytes,
- .iov_base = qemu_blockalign(bs, nb_cow_bytes)
- };
- qemu_iovec_init_external(&qiov, &iov, 1);
+ QEMUIOVector qiov =
+ QEMU_IOVEC_INIT_BUF(qiov, qemu_blockalign(bs, nb_cow_bytes),
+ nb_cow_bytes);
ret = bdrv_co_preadv(bs->backing, idx * s->tracks * BDRV_SECTOR_SIZE,
nb_cow_bytes, &qiov, 0);
if (ret < 0) {
- qemu_vfree(iov.iov_base);
+ qemu_vfree(qemu_iovec_buf(&qiov));
return ret;
}
ret = bdrv_co_pwritev(bs->file, s->data_end * BDRV_SECTOR_SIZE,
nb_cow_bytes, &qiov, 0);
- qemu_vfree(iov.iov_base);
+ qemu_vfree(qemu_iovec_buf(&qiov));
if (ret < 0) {
return ret;
}