Re: [PATCH] A new entry for /proc

[Andrew Morton]

Mauricio Lin <mauriciolin@xxxxxxxxx> wrote:
>
> You said that the old smaps version is not efficient because the way
>  it access each pte.

Nick is talking about changing the kenrel so that it "refcounts pagetable
pages".  I'm not sure why.

I assume that this means that each pte page's refcount will be incremented
by one for each instantiated pte.  If so, then /proc/pid/smaps can become a
lot more efficient.  Just add up the page refcounts on all the pte pages -
no need to walk the ptes themselves.

Maybe?
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