Re: [PATCH 2/5] pagemap: Change kpagecount to return the mapcount, not the reference count, of a page.

[Matt Mackall]

On Thu, 2008-06-05 at 11:04 -0400, Thomas Tuttle wrote:
> When trying to use pagemap to calculate the "proportional set size"
> [1] of a process, I discovered that there were often references to
> pages that could not be discovered by kpagecount.  I changed
> kpagecount to return the number of times a page is mapped, rather than
> referenced, so kpagecount is more useful for determining how many
> processes are using a page.

I'm pretty sure this has been suggested before and I was just too
thick-skulled to get it. Yes, the reference count is less useful.

Acked-by: Matt Mackall <mpm@xxxxxxxxxxx>

ps: It's much prefered to send patches inline.

-- 
Mathematics is the supreme nostalgia of our time.

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