Messages in this thread | | | Subject | Re: [RFC] Arch option to touch newly allocated pages | Date | Wed, 06 Mar 2002 15:25:00 -0500 | From | Jeff Dike <> |
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alan@lxorguk.ukuu.org.uk said: > Doesn't seem to but it looks like madvise might be enough to make that > happen.
Yeah, MADV_DONTNEED looks right. UML and Linux/s390 (assuming VM has the equivalent of MADV_DONTNEED) would need a hook in free_pages to make that happen.
> That BTW is an issue for more than UML - it has a bearing on running > lots of Linux instances on any supervisor/virtualising system like S/390
On a side note, the "unused memory is wasted memory" behavior that UML and Linux/s390 inherit is also less than optimal for the host.
Jeff
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