diff options
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 50e0a94..e04ba6d 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -684,6 +684,9 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, goto fail; } s->refcount_order = header.refcount_order; + s->refcount_bits = 1 << s->refcount_order; + s->refcount_max = UINT64_C(1) << (s->refcount_bits - 1); + s->refcount_max += s->refcount_max - 1; if (header.crypt_method > QCOW_CRYPT_AES) { error_setg(errp, "Unsupported encryption method: %" PRIu32, |