From: Mel Gorman <mel@csn.ul.ie>
To: "Raghu R. Arur" <rra2002@aria.ncl.cs.columbia.edu>
Cc: kernelnewbies@nl.linux.org, linux-mm@kvack.org
Subject: Re: anonymous buffer pages
Date: Tue, 5 Aug 2003 16:54:03 +0100 (IST) [thread overview]
Message-ID: <Pine.LNX.4.53.0308051647370.10972@skynet> (raw)
In-Reply-To: <Pine.GSO.4.51.0308051141270.10476@aria.ncl.cs.columbia.edu>
On Tue, 5 Aug 2003, Raghu R. Arur wrote:
> when are anonymous buffer pages created and how are they removed from
> the system in linux 2.4.19 ?
Buried in
http://www.skynet.ie/~mel/projects/vm/guide/html/understand/node70.html#SECTION001533000000000000000
is
"An anonymous page may have associated buffers if it is backed by a swap
file."
The reason being that the page will need to be written out in block-sized
chunks. Once written out, the page->buffers will be null again and it'll
be cleared out the normal way via the swap cache when all processes have
unmapped the page
--
Mel Gorman
http://www.csn.ul.ie/~mel
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prev parent reply other threads:[~2003-08-05 15:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-05 15:45 Raghu R. Arur
2003-08-05 15:54 ` Mel Gorman [this message]
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