string_size_units
int string_get_size(u64 size, u64 blk_size, const enum string_size_units units,
int string_get_size(u64 size, u64 blk_size, const enum string_size_units units,
enum string_size_units units_base = units & STRING_UNITS_MASK;
enum string_size_units units,
enum string_size_units units;