diff options
Diffstat (limited to 'block/qcow2.c')
| -rw-r--r-- | block/qcow2.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 316a8db22b..f692978a6c 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1802,7 +1802,7 @@ static int qcow2_create2(const char *filename, int64_t total_size, { /* Calculate cluster_bits */ int cluster_bits; - cluster_bits = ffs(cluster_size) - 1; + cluster_bits = ctz32(cluster_size); if (cluster_bits < MIN_CLUSTER_BITS || cluster_bits > MAX_CLUSTER_BITS || (1 << cluster_bits) != cluster_size) { @@ -2110,7 +2110,7 @@ static int qcow2_create(const char *filename, QemuOpts *opts, Error **errp) goto finish; } - refcount_order = ffs(refcount_bits) - 1; + refcount_order = ctz32(refcount_bits); ret = qcow2_create2(filename, size, backing_file, backing_fmt, flags, cluster_size, prealloc, opts, version, refcount_order, |