On Fri, 26 Jan 2007, Nick Piggin wrote:
> Christoph Lameter wrote:
> > Add NR_MLOCK
> >
> > Track mlocked pages via a ZVC
>
> I think it is not quite right. You are tracking the number of ptes
> that point to mlocked pages, which can be >= the actual number of pages.
Mlocked pages are not inherited. I would expect sharing to be very rare.
> Also, page_add_anon_rmap still needs to be balanced with page_remove_rmap.
Hmmm....
> I can't think of an easy way to do this without per-page state. ie.
> another page flag.
Thats what I am trying to avoid.
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