linux-kernel - Re: [patch 10/10] mm: workingset: keep shadow entries in check

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Message-ID: <20130603185228.GG8923@twins.programming.kicks-ass.net>
Date:	Mon, 3 Jun 2013 20:52:28 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Johannes Weiner <hannes@...xchg.org>
Cc:	linux-mm@...ck.org, Andi Kleen <andi@...stfloor.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Thelen <gthelen@...gle.com>,
	Christoph Hellwig <hch@...radead.org>,
	Hugh Dickins <hughd@...gle.com>, Jan Kara <jack@...e.cz>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Mel Gorman <mgorman@...e.de>,
	Minchan Kim <minchan.kim@...il.com>,
	Rik van Riel <riel@...hat.com>,
	Michel Lespinasse <walken@...gle.com>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Roman Gushchin <klamm@...dex-team.ru>,
	metin d <metdos@...oo.com>, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [patch 10/10] mm: workingset: keep shadow entries in check

On Mon, Jun 03, 2013 at 02:12:02PM -0400, Johannes Weiner wrote:
> > But given that, sure maybe 1 memory size is a bit strict, but surely we
> > can put a limit on things at about 2 memory sizes?
> 
> That's what this 10/10 patch does (prune everything older than 2 *
> global_dirtyable_memory()), so I think we're talking past each other.
> 
> Maybe the wording of the changelog was confusing?  The paragraph you
> quoted above explains the problem resulting from 9/10 but which this
> patch 10/10 fixes.

Could be I just didn't read very well -- I pretty much raced through the
patches trying to get a general overview and see if I could spot
something weird.

I'll try again and let you know :-)
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