linux-kernel - Re: [PATCH] mm: vmscan: fix malused nr

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Message-ID: <CAJd=RBCv1F3oWpnEbqrvOaRzg_G6Xj_PPHP8v6OADL=vH2pt8g@mail.gmail.com>
Date:	Thu, 26 Jan 2012 11:19:17 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hughd@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: vmscan: fix malused nr_reclaimed in shrinking zone

Hi Andrew

On Thu, Jan 26, 2012 at 9:00 AM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
>
> I'm thinking we have a bit of code rot happening here.  This comment:
>
>                /*
>                 * On large memory systems, scan >> priority can become
>                 * really large. This is fine for the starting priority;
>                 * we want to put equal scanning pressure on each zone.
>                 * However, if the VM has a harder time of freeing pages,
>                 * with multiple processes reclaiming pages, the total
>                 * freeing target can get unreasonably large.
>                 */
>
> seems to have little to do with the code which it is trying to
> describe.  Or at least, I'm not sure this is the best we can possibly
> do :(
>

Try to do it soon 8-)

>
> Also, your email client is adding MIME goop to the emails which mine
> (sylpheed) is unable to decrypt.  It turns "=" into "=3D" everywhere.
> This:
>
> MIME-Version: 1.0
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: quoted-printable
>
> I blame sylpheed for this, but if you can make it stop, that would make
> my life easier, and perhaps others.
>

More care will take gmail later on.

Thanks
Hillf
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