- data_blocks_cnt = s->virtual_disk_size >> s->block_size_bits;
- if (s->virtual_disk_size - (data_blocks_cnt << s->block_size_bits)) {
- data_blocks_cnt++;
- }
- bitmap_blocks_cnt = data_blocks_cnt >> s->chunk_ratio_bits;
- if (data_blocks_cnt - (bitmap_blocks_cnt << s->chunk_ratio_bits)) {
- bitmap_blocks_cnt++;
- }
+ data_blocks_cnt = DIV_ROUND_UP(s->virtual_disk_size, s->block_size);
+ bitmap_blocks_cnt = DIV_ROUND_UP(data_blocks_cnt, s->chunk_ratio);