From: Andrew Morton <akpm@zip.com.au>
To: Christoph Hellwig <hch@infradead.org>
Cc: Linus Torvalds <torvalds@transmeta.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] buffermem_pages removal (5/5)
Date: Tue, 21 May 2002 10:51:19 -0700 [thread overview]
Message-ID: <3CEA8917.7A52176C@zip.com.au> (raw)
In-Reply-To: <20020521141015.E15796@infradead.org>
Christoph Hellwig wrote:
>
> No more users of buffermem_pages are left, remove it.
Yeah, may as well.
The buffermem_pages accounting is vaguely interesting because
it tells us how much of ZONE_NORMAL is being usefully used for
blockdev pagecache. And ZONE_NORMAL utilisation is a bit of a
hot topic at present.
But the same information can be obtained on-demand by running
around the bdev superblock's inodes adding up nr_pages. That
approach is better than the per-page atomic ops in buffer.c.
-
next prev parent reply other threads:[~2002-05-21 17:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-21 13:10 [PATCH] buffermem_pages removal (5/5) Christoph Hellwig
2002-05-21 17:51 ` Andrew Morton [this message]
2002-05-21 17:53 ` Christoph Hellwig
2002-05-21 18:27 ` Andrew Morton
2002-05-21 21:54 ` Martin J. Bligh
2002-05-22 3:53 ` Daniel Phillips
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