linux-kernel - Re: [PATCH 2/3] mm, slub: count freed pages via rcu as this task's reclaimed

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Date:	Thu, 11 Apr 2013 15:03:48 +0000
From:	Christoph Lameter <cl@...ux.com>
To:	Simon Jeons <simon.jeons@...il.com>
cc:	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Mel Gorman <mgorman@...e.de>, Hugh Dickins <hughd@...gle.com>,
	Rik van Riel <riel@...hat.com>,
	Minchan Kim <minchan@...nel.org>,
	Pekka Enberg <penberg@...nel.org>,
	Matt Mackall <mpm@...enic.com>
Subject: Re: [PATCH 2/3] mm, slub: count freed pages via rcu as this task's
 reclaimed_slab

On Thu, 11 Apr 2013, Simon Jeons wrote:

> It seems that I need to simple my question.
> All pages which order >=1 are compound pages?

In the slub allocator that is true.

One can request and free a series of contiguous pages that are not
compound pages from the page allocator and a couple of subsystems use
those.

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