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

> > 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@linux.intel.com -- Speaking for myself only.

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