linux-kernel - [RFC][PATCH 0/8] mm: freshen percpu pageset code

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Message-Id: <20131015203536.1475C2BE@viggo.jf.intel.com>
Date:	Tue, 15 Oct 2013 13:35:36 -0700
From:	Dave Hansen <dave@...1.net>
To:	linux-mm@...ck.org
Cc:	linux-kernel@...r.kernel.org,
	Cody P Schafer <cody@...ux.vnet.ibm.com>,
	Andi Kleen <ak@...ux.intel.com>, cl@...two.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mel@....ul.ie>, Dave Hansen <dave@...1.net>
Subject: [RFC][PATCH 0/8] mm: freshen percpu pageset code

The percpu pageset (pcp) code is looking a little old and
neglected these days.  This set does a couple of these things (in
order of importance, not order of implementation in the series):

1. Change the default pageset pcp->high value from 744kB
   to 512k.  (see "consolidate high-to-batch ratio code")
2. Allow setting of vm.percpu_pagelist_fraction=0, which
   takes you back to the boot-time behavior
3. Resolve inconsistencies in the way the boot-time and
   sysctl pcp code works.
4. Clarify some function names and code comments.

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