linux-kernel - Re: [PATCH] mm: cache largest vma

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Message-ID: <20131113181623.GS21461@twins.programming.kicks-ass.net>
Date:	Wed, 13 Nov 2013 19:16:23 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Davidlohr Bueso <davidlohr@...com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Michel Lespinasse <walken@...gle.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Rik van Riel <riel@...hat.com>,
	Guan Xuetao <gxt@...c.pku.edu.cn>,
	"Chandramouleeswaran, Aswin" <aswin@...com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Subject: Re: [PATCH] mm: cache largest vma

On Mon, Nov 11, 2013 at 12:47:28PM -0800, Davidlohr Bueso wrote:
> On Mon, 2013-11-11 at 13:04 +0100, Ingo Molnar wrote:
> in find_vma() but the cost of maintaining it comes free. I just ran into
> a similar idea from 2 years ago:
> http://lkml.indiana.edu/hypermail/linux/kernel/1112.1/01352.html

Here's one from 2007:

http://programming.kicks-ass.net/kernel-patches/futex-vma-cache/vma_cache.patch

and I'm very sure Nick Piggin had one even older :-)


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