linux-kernel - Re: [PATCH 12/15] radixtree: introduce radix_tree_lookup_leaf

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Message-ID: <4B87040A.1020904@redhat.com>
Date:	Thu, 25 Feb 2010 18:13:14 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Chris Mason <chris.mason@...cle.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Clemens Ladisch <clemens@...isch.de>,
	Olivier Galibert <galibert@...ox.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	Christian Ehrhardt <ehrhardt@...ux.vnet.ibm.com>,
	Matt Mackall <mpm@...enic.com>, Nick Piggin <npiggin@...e.de>,
	Linux Memory Management List <linux-mm@...ck.org>,
	linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 12/15] radixtree: introduce radix_tree_lookup_leaf_node()

On 02/23/2010 10:10 PM, Wu Fengguang wrote:
> This will be used by the pagecache context based read-ahead/read-around
> heuristic to quickly check one pagecache range:
> - if there is any hole
> - if there is any pages
>
> Cc: Nick Piggin<nickpiggin@...oo.com.au>
> Signed-off-by: Wu Fengguang<fengguang.wu@...el.com>

Acked-by: Rik van Riel <riel@...hat.com>

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