MS_BLOCKS_IN_ZONE
int pba = zone * MS_BLOCKS_IN_ZONE;
msb->zone_count = msb->block_count / MS_BLOCKS_IN_ZONE;
if (msb->block_count > MS_MAX_ZONES * MS_BLOCKS_IN_ZONE) {
msb->free_block_count[i] = MS_BLOCKS_IN_ZONE;
return pba / MS_BLOCKS_IN_ZONE;