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Message-ID: <4ca0a85e0806050903o5960bfb9o482e4124b631f6cb@mail.gmail.com> Date: Thu, 5 Jun 2008 12:03:53 -0400 From: "Thomas Tuttle" <ttuttle@...gle.com> To: "Matt Mackall" <mpm@...enic.com> Cc: akpm@...ux-foundation.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/5] pagemap: Change kpagecount to return the map count, not the reference count, of a page. On Thu, Jun 5, 2008 at 12:01 PM, Matt Mackall <mpm@...enic.com> wrote: > > 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@...enic.com> > > ps: It's much prefered to send patches inline. Oh. Sorry about that. (It's been a while since I sent patches to LKML.) --ttuttle -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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