linux-kernel - Re: What was the problem with quicklists and x86-64?

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Message-ID: <Pine.LNX.4.64.0712131435520.25120@schroedinger.engr.sgi.com>
Date:	Thu, 13 Dec 2007 14:36:59 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>, Andi Kleen <ak@...e.de>,
	Tony Luck <tony.luck@...el.com>,
	Asit Mallick <asit.k.mallick@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: What was the problem with quicklists and x86-64?

On Fri, 14 Dec 2007, Benjamin Herrenschmidt wrote:

> > No this may mean that the problem does not exist on powerpc since it 
> > seems to be okay to free pages before all processors have flushed the 
> > TLBs? Or are you deferrring the freeing of the pages via RCU?
> 
> I'm deferring the freeing with RCU.

The deferral works on a page level or for the whole list of pages that 
have been gathered?

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