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-rw-r--r--block/qcow2-cluster.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index ee50500..405329a 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -1707,7 +1707,8 @@ static int expand_zero_clusters_in_l1(BlockDriverState *bs, uint64_t *l1_table,
/* For shared L2 tables, set the refcount accordingly (it is
* already 1 and needs to be l2_refcount) */
ret = qcow2_update_cluster_refcount(bs,
- offset >> s->cluster_bits, l2_refcount - 1,
+ offset >> s->cluster_bits,
+ refcount_diff(1, l2_refcount), false,
QCOW2_DISCARD_OTHER);
if (ret < 0) {
qcow2_free_clusters(bs, offset, s->cluster_size,