linux-kernel - Re: [PATCH 07/10] mm: vmscan: Block kswapd if it is encountering pages under writeback

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Message-ID: <20130317154013.GC20853@two.firstfloor.org>
Date:	Sun, 17 Mar 2013 16:40:13 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Andi Kleen <andi@...stfloor.org>, Linux-MM <linux-mm@...ck.org>,
	Jiri Slaby <jslaby@...e.cz>,
	Valdis Kletnieks <Valdis.Kletnieks@...edu>,
	Rik van Riel <riel@...hat.com>,
	Zlatko Calusic <zcalusic@...sync.net>,
	Johannes Weiner <hannes@...xchg.org>,
	dormando <dormando@...ia.net>,
	Satoru Moriya <satoru.moriya@....com>,
	Michal Hocko <mhocko@...e.cz>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 07/10] mm: vmscan: Block kswapd if it is encountering
 pages under writeback

> > BTW longer term the code would probably be a lot clearer with a
> > real explicit state machine instead of all these custom state bits.
> > 
> 
> I would expect so even though it'd be a major overhawl.

A lot of these VM paths need overhaul because they usually don't
do enough page batching to perform really well on larger systems.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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