But the program being discussed is (of course) GNU cp. That program is not in any way designed for, limited to, or intended only for, use in Linux. So what Lin

But the program being discussed is (of course) GNU cp. That program is not in any way designed for, limited to, or intended only for, use in Linux. So what Linux supports and doesn't support in terms of memory management really has no bearing on what GNU cp can or cannot do, in general.