diff options
| -rw-r--r-- | block/qcow2-bitmap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index 14f41d0427..1fc375b40a 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -274,10 +274,13 @@ static int free_bitmap_clusters(BlockDriverState *bs, Qcow2BitmapTable *tb) static uint64_t sectors_covered_by_bitmap_cluster(const BDRVQcow2State *s, const BdrvDirtyBitmap *bitmap) { - uint32_t sector_granularity = + uint64_t sector_granularity = bdrv_dirty_bitmap_granularity(bitmap) >> BDRV_SECTOR_BITS; + uint64_t sbc = sector_granularity * (s->cluster_size << 3); - return (uint64_t)sector_granularity * (s->cluster_size << 3); + assert(QEMU_IS_ALIGNED(sbc, + bdrv_dirty_bitmap_serialization_align(bitmap))); + return sbc; } /* load_bitmap_data |