From: Mel Gorman <mel@csn.ul.ie>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
David Rientjes <rientjes@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH 05/12] Memory compaction core
Date: Thu, 18 Feb 2010 21:35:18 +0000 [thread overview]
Message-ID: <20100218213518.GD30258@csn.ul.ie> (raw)
In-Reply-To: <alpine.DEB.2.00.1002181335270.7351@router.home>
On Thu, Feb 18, 2010 at 01:37:35PM -0600, Christoph Lameter wrote:
> On Tue, 16 Feb 2010, Mel Gorman wrote:
>
> > > Oh there are numerous ZONE_DMA pressure issues if you have ancient /
> > > screwed up hardware that can only operate on DMA or DMA32 memory.
> > >
> >
> > I've never ran into the issue. I was under the impression that the only
> > device that might care these days are floopy disks.
>
> Kame-san had an issue a year or so ago.
>
Will add it as a potential follow-on then. I consider Unevictable more
important than zone-pressure issues. Neither are going to be done in the
first pass. It's complex enough as it is and I'm more concerned with
getting teh page migration anon_vma snag ironed out. Can you review the
patches related to page migration in v3 please and see what you think?
You are much more familiar with the intent of that area than I.
--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab
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next prev parent reply other threads:[~2010-02-18 21:35 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-12 12:00 [PATCH 0/12] Memory Compaction v2r12 Mel Gorman
2010-02-12 12:00 ` [PATCH 01/12] mm: Document /proc/pagetypeinfo Mel Gorman
2010-02-12 15:54 ` Christoph Lameter
2010-02-16 7:05 ` KOSAKI Motohiro
2010-02-12 12:00 ` [PATCH 02/12] Allow CONFIG_MIGRATION to be set without CONFIG_NUMA or memory hot-remove Mel Gorman
2010-02-16 17:43 ` Rik van Riel
2010-02-12 12:00 ` [PATCH 03/12] Export unusable free space index via /proc/pagetypeinfo Mel Gorman
2010-02-16 7:03 ` KOSAKI Motohiro
2010-02-16 8:36 ` Mel Gorman
2010-02-16 8:41 ` KOSAKI Motohiro
2010-02-16 8:50 ` Mel Gorman
2010-02-16 18:28 ` Rik van Riel
2010-02-18 15:23 ` Minchan Kim
2010-02-18 15:32 ` Mel Gorman
2010-02-12 12:00 ` [PATCH 04/12] Export fragmentation " Mel Gorman
2010-02-16 7:59 ` KOSAKI Motohiro
2010-02-16 8:41 ` Mel Gorman
2010-02-16 8:49 ` KOSAKI Motohiro
2010-02-17 1:44 ` Rik van Riel
2010-02-18 15:37 ` Minchan Kim
2010-02-12 12:00 ` [PATCH 05/12] Memory compaction core Mel Gorman
2010-02-16 8:31 ` KOSAKI Motohiro
2010-02-16 8:48 ` Mel Gorman
2010-02-16 14:55 ` Christoph Lameter
2010-02-16 14:59 ` Mel Gorman
2010-02-18 19:37 ` Christoph Lameter
2010-02-18 21:35 ` Mel Gorman [this message]
2010-02-19 0:04 ` KAMEZAWA Hiroyuki
2010-02-17 13:29 ` Mel Gorman
2010-02-17 15:45 ` Rik van Riel
2010-02-18 16:58 ` Minchan Kim
2010-02-18 17:34 ` Mel Gorman
2010-02-19 1:21 ` Minchan Kim
2010-02-19 14:33 ` Mel Gorman
2010-02-12 12:00 ` [PATCH 06/12] Add /proc trigger for memory compaction Mel Gorman
2010-02-12 18:34 ` Valdis.Kletnieks
2010-02-12 18:38 ` Mel Gorman
2010-02-17 16:30 ` Rik van Riel
2010-02-18 19:51 ` Christoph Lameter
2010-02-19 1:56 ` Minchan Kim
2010-02-12 12:00 ` [PATCH 07/12] Add /sys trigger for per-node " Mel Gorman
2010-02-17 16:30 ` Rik van Riel
2010-02-12 12:00 ` [PATCH 08/12] Direct compact when a high-order allocation fails Mel Gorman
2010-02-18 3:57 ` Rik van Riel
2010-02-12 12:00 ` [PATCH 09/12] Do not compact within a preferred zone after a compaction failure Mel Gorman
2010-02-18 4:09 ` Rik van Riel
2010-02-12 12:00 ` [PATCH 10/12] mm: Check for an empty VMA list in rmap_walk_anon Mel Gorman
2010-02-17 18:22 ` Mel Gorman
2010-02-12 12:00 ` [PATCH 11/12] mm: Take the RCU read lock " Mel Gorman
2010-02-12 12:00 ` [PATCH 12/12] mm: Check the anon_vma is still valid in rmap_walk_anon() Mel Gorman
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