Re: [RFC] Arch option to touch newly allocated pages

Joseph Malicki
2002-03-06T22:30:48Z

>
> jdike@karaya.com said:
> > 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.
>
> MADV_DONTNEED
> Do not expect access in the near future. (For the
> time being, the application is finished with the
> given range, so the kernel can free resources asso­
> ciated with it.)
>
> It's not clear from that that the host kernel is actually permitted to
> discard the data.

Solaris has MADV_FREE to say that the data can be discarded...

-joe