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
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This archive was generated by hypermail 2b29 : Thu May 23 2002 - 22:00:26 EST