Messages in this thread |  | | Subject | Re: [PATCH RFC] mm/madvise: introduce MADV_POPULATE to prefault/prealloc memory | From | David Hildenbrand <> | Date | Mon, 22 Feb 2021 14:22:37 +0100 |
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>> Exactly. But for hugetlbfs/shmem ("!RAM-backed files") this is not what we >> want. > > OK, then I must have misread your requirements. Maybe I just got lost in > all the combinations you have listed.
Another special case could be dax/pmem I think. You might want to fault it in readable/writable but not perform an actual read/write unless really required.
QEMU phrases this as "don't cause wear on the storage backing".
-- Thanks,
David / dhildenb
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