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Message-ID: <alpine.DEB.2.11.1501050852380.24090@gentwo.org>
Date: Mon, 5 Jan 2015 08:53:20 -0600 (CST)
From: Christoph Lameter <cl@...ux.com>
To: Joonsoo Kim <iamjoonsoo.kim@....com>
cc: Andrew Morton <akpm@...ux-foundation.org>,
Pekka Enberg <penberg@...nel.org>,
David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org,
Jesper Dangaard Brouer <brouer@...hat.com>,
rostedt@...dmis.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 2/2] mm: don't use compound_head() in
virt_to_head_page()
On Mon, 5 Jan 2015, Joonsoo Kim wrote:
> This patch implements compound_head_fast() which is similar with
> compound_head() except tail flag race handling. And then,
> virt_to_head_page() uses this optimized function to improve performance.
Yeah that is how it was before and how it should be
Acked-by: Christoph Lameter <cl@...ux.com>
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