@@ -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