linux-kernel - Re: [RFC] Tracking mlocked pages and moving them off the LRU

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Message-ID: <Pine.LNX.4.64.0702030956400.5388@schroedinger.engr.sgi.com>
Date:	Sat, 3 Feb 2007 09:59:20 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	"Martin J. Bligh" <mbligh@...igh.org>
cc:	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	Nick Piggin <nickpiggin@...oo.com.au>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>
Subject: Re: [RFC] Tracking mlocked pages and moving them off the LRU

On Sat, 3 Feb 2007, Martin J. Bligh wrote:

> Doesn't matter - you can just do it lazily. If you find a page that is
> locked, move it to the locked list. when unlocking a page you *always*
> move it back to the normal list. If someone else is still locking it,
> we'll move it back to the lock list on next reclaim pass.

Sounds similar to what Andrew is proposing.
 
> I have a half-finished patch from 6 months ago that does this, but never
> found time to complete it ;-(

Could I see that patch? Could have some good approaches in there that 
would be useful.

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