Re: Have the 2.4 kernel memory management problems on large machines

Linus Torvalds
2002-05-22T18:29:00Z

On Wed, 22 May 2002, Alan Cox wrote:
>
> That assumes you want to page out the page table only after the pages it
> references are paged out. There is no reason I can see for not flushing it
> first.

Dirty state and mixed vma's on the same pmd would make this more complex
than I really like, but sure..

However, the pmd almost certainly gets re-created very quickly anyway, so
I seriously doubt you get any real wins.

Remember: the point of swapping stuff out (or just dropping them) is that
we don't need them in the near future. With a 4MB (or 2MB) granularity,
that's not very likely.

Linus