linux-kernel - Re: quicklists confuse meminfo

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Message-ID: <20080309120124.GB1249@elte.hu>
Date:	Sun, 9 Mar 2008 13:01:24 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <clameter@....com>,
	Bart Van Assche <bart.vanassche@...il.com>
Subject: Re: quicklists confuse meminfo


* Thomas Gleixner <tglx@...utronix.de> wrote:

> Right, also the quicklist_trim() in idle() is freeing at max 16 pages 
> in one go. According to the quicklist_trim() code we keep up to 
> (node_free_pages / 16) in the quicklist unconditionally, which seems 
> rather odd as well.

i suspect the right approach would be to get rid of them altogether and 
to convert the code to RCU and plain old alloc/free instead.

	Ingo
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