From: Matt Mackall <mpm@selenic.com>
To: Thomas Tuttle <ttuttle@google.com>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/5] pagemap: Change kpagecount to return the map count, not the reference count, of a page.
Date: Thu, 05 Jun 2008 11:01:07 -0500 [thread overview]
Message-ID: <1212681667.3953.159.camel@calx> (raw)
In-Reply-To: <4ca0a85e0806050804s798bba46wcb29d2582120bfab@mail.gmail.com>
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@selenic.com>
ps: It's much prefered to send patches inline.
--
Mathematics is the supreme nostalgia of our time.
next prev parent reply other threads:[~2008-06-05 16:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-05 15:04 Thomas Tuttle
2008-06-05 16:01 ` Matt Mackall [this message]
2008-06-05 16:03 ` Thomas Tuttle
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