From: Christoph Lameter <cl@linux.com>
To: Minchan Kim <minchan@kernel.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
John Stultz <john.stultz@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
Android Kernel Team <kernel-team@android.com>,
Robert Love <rlove@google.com>, Mel Gorman <mel@csn.ul.ie>,
Hugh Dickins <hughd@google.com>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Rik van Riel <riel@redhat.com>,
Dave Chinner <david@fromorbit.com>, Neil Brown <neilb@suse.de>,
Mike Hommey <mh@glandium.org>, Taras Glek <tglek@mozilla.com>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [RFC] Support volatile range for anon vma
Date: Thu, 1 Nov 2012 20:26:09 +0000 [thread overview]
Message-ID: <0000013abda6fc7d-6cfbef1e-bc7d-4f4f-bb38-221729e8c9f9-000000@email.amazonses.com> (raw)
In-Reply-To: <20121026005851.GD15767@bbox>
On Fri, 26 Oct 2012, Minchan Kim wrote:
> I guess it would improve system performance very well.
> But as I wrote down in description, downside of the patch is that we have to
> age anon lru although we don't have swap. But gain via the patch is bigger than
> loss via aging of anon lru when memory pressure happens. I don't see other downside
> other than it. What do you think about it?
> (I didn't implement anon lru aging in case of no-swap but it's trivial
> once we decide)
I am a bit confused like some of the others as to why this patch is
necessary since we already have DONT_NEED.
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next prev parent reply other threads:[~2012-11-01 20:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-25 2:57 Minchan Kim
2012-10-25 15:19 ` Christoph Lameter
2012-10-26 0:58 ` Minchan Kim
2012-11-01 20:26 ` Christoph Lameter [this message]
2012-11-02 2:32 ` Minchan Kim
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