From: Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>
To: Hugh Dickins <hugh@veritas.com>
Cc: Jaroslav Kysela <perex@suse.cz>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org
Subject: Re: Strange memory usage reporting
Date: Wed, 27 Aug 2003 09:52:41 +0200 [thread overview]
Message-ID: <20030827095241.D639@nightmaster.csn.tu-chemnitz.de> (raw)
In-Reply-To: <Pine.LNX.4.44.0308261756570.1632-100000@localhost.localdomain>; from hugh@veritas.com on Tue, Aug 26, 2003 at 06:03:14PM +0100
Hi,
On Tue, Aug 26, 2003 at 06:03:14PM +0100, Hugh Dickins wrote:
> Which is the driver involved? Though it's not wrong to give do_no_page
> a Reserved page, beware of the the page->count accounting: while it's
> Reserved, get_page or page_cache_get raises the count, but put_page
> or page_cache_release does not decrement it - very easy to end up
> with the page never freed.
Why is this so asymetric? I would understand ignoring these pages
in the freeing logic, but why exclude them also from refcounting?
Regards
Ingo Oeser
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next parent reply other threads:[~2003-08-27 7:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.44.0308261550240.1958-100000@pnote.perex-int.cz>
[not found] ` <Pine.LNX.4.44.0308261756570.1632-100000@localhost.localdomain>
2003-08-27 7:52 ` Ingo Oeser [this message]
2003-08-27 13:45 ` Hugh Dickins
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