From: Nick Piggin <npiggin@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Christoph Lameter <clameter@engr.sgi.com>,
Linux Memory Management List <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [rfc][patch 2/2] mm: mlocked pages off LRU
Date: Tue, 6 Mar 2007 03:50:16 +0100 [thread overview]
Message-ID: <20070306025016.GA1912@wotan.suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0703051845050.17203@schroedinger.engr.sgi.com>
On Mon, Mar 05, 2007 at 06:46:31PM -0800, Christoph Lameter wrote:
> On Tue, 6 Mar 2007, Nick Piggin wrote:
>
> > > The above is a bit contradictory. Assuming they are taken off the LRU:
> > > How will they be returned to the LRU?
> >
> > In what way is it contradictory? If they are mlocked, we put them on the
> > LRU when they get munlocked. If they are off the LRU due to a !swap condition,
> > then we put them back on the LRU by whatever mechanism that uses (eg. a
> > 3rd LRU list that we go through much more slowly...).
>
> Ok how are we going to implement the 3rd LRU for non mlocked anonymous
> pages if you use the lru for the refcounter field? Another page flags bit?
I'll implement it exactly the same way as I would if *not* using the lru
fields privately for !PageLRU && PageMLock pages.
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next prev parent reply other threads:[~2007-03-06 2:50 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-05 16:17 Nick Piggin
2007-03-05 16:40 ` Nick Piggin
2007-03-05 17:12 ` Christoph Hellwig
2007-03-05 18:17 ` Christoph Lameter
2007-03-05 18:14 ` Christoph Lameter
2007-03-05 19:26 ` Rik van Riel
2007-03-06 1:05 ` Nick Piggin
2007-03-06 1:27 ` Christoph Lameter
2007-03-06 1:44 ` Nick Piggin
2007-03-06 1:55 ` Christoph Lameter
2007-03-06 2:13 ` Nick Piggin
2007-03-06 2:46 ` Christoph Lameter
2007-03-06 2:50 ` Nick Piggin [this message]
2007-03-06 14:30 ` Nick Piggin
2007-03-06 18:30 ` Christoph Lameter
2007-03-07 3:07 ` Nick Piggin
2007-03-06 22:23 ` Lee Schermerhorn
2007-03-07 3:52 ` Nick Piggin
2007-03-06 15:59 ` Rik van Riel
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