Hi Linus, On Sun, Jul 07, 2024 at 05:08:29PM -0700, Linus Torvalds wrote: > + vm_flags |= VM_DROPPABLE; > + vm_flags |= VM_WIPEONFORK | VM_DONTDUMP; > which looks rather simple. That is nice, though I would add that if we're implying things that are sensible to imply, it really also needs to add VM_NORESERVE too. DROPPABLE doesn't make sense semantically without it. Anyway, rather than adding PROT_xyz for v+1, I'll try adding this MAP_DROPPABLE (or a different name for David) with the implications as you've suggested. Jason