linux-kernel - Re: [PATCH v3] mm: simplify find_vma

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Date:	Mon, 12 Dec 2011 09:49:30 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	kosaki.motohiro@...il.com
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andrew Morton (commit_signer:15/23=65%) 
	<akpm@...ux-foundation.org>,
	Hugh Dickins (commit_signer:7/23=30%) <hughd@...gle.com>,
	Peter Zijlstra (commit_signer:4/23=17%) 
	<a.p.zijlstra@...llo.nl>,
	Shaohua Li (commit_signer:3/23=13%) <shaohua.li@...el.com>
Subject: Re: [PATCH v3] mm: simplify find_vma_prev

On Fri,  9 Dec 2011 17:48:40 -0500
kosaki.motohiro@...il.com wrote:

> From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> 
> commit 297c5eee37 (mm: make the vma list be doubly linked) added
> vm_prev member into vm_area_struct. Therefore we can simplify
> find_vma_prev() by using it. Also, this change help to improve
> page fault performance because it has strong locality of reference.
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

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