dontneed should hopefully/likely see a speedup.Yes, but that's almost exactly the same path as munmap, so I'm sure it reallyadds much for this particular series.
Right, that's why I'm not including these measurements. dontneed vs. munmap is more about measuring the overhead of VMA modifications + page table reclaim.
Anyway, on Altra at least, I'm seeing no regressions, so: Tested-by: Ryan Roberts <ryan.roberts@xxxxxxx>
Thanks! -- Cheers, David / dhildenb