Re: [PATCH RFC] mm/madvise: introduce MADV_POPULATE to prefault/prealloc memory
From: David Hildenbrand <hidden>
Date: 2021-02-22 14:09:04
Also in:
linux-alpha, linux-arch, linux-mips, lkml
quoted
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