From: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: akpm@linux-foundation.org, mel@csn.ul.ie, ak@suse.de,
kamezawa.hiroyu@jp.fujitsu.com, linux-mm@kvack.org,
rientjes@google.com, eric.whitney@hp.com
Subject: Re: [PATCH 3/6] Remember what the preferred zone is for zone_statistics
Date: Thu, 28 Feb 2008 12:45:54 -0500 [thread overview]
Message-ID: <1204220754.5301.17.camel@localhost> (raw)
In-Reply-To: <Pine.LNX.4.64.0802271400110.12963@schroedinger.engr.sgi.com>
On Wed, 2008-02-27 at 14:00 -0800, Christoph Lameter wrote:
> > This patch records what the preferred zone is rather than assuming the
> > first zone in the zonelist is it. This simplifies the reading of later
> > patches in this set.
>
> And is needed for correctness if GFP_THISNODE is used?
Mel can correct me.
I believe this is needed for MPOL_BIND allocations because we now use
the zonelist for the local node--i.e., the node from which the
allocation takes place--and search for the nearest node in the policy
nodemask that satisfies the allocation. For the purpose of numa stats,
a "numa_hit" occurs if the allocation succeeds on the first node in the
zone list that is also in the policy nodemask--this is the "preferred
node".
Lee
>
> Reviewed-by: Christoph Lameter <clameter@sgi.com>
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next prev parent reply other threads:[~2008-02-28 17:45 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-27 21:47 [PATCH 0/6] Use two zonelists per node instead of multiple zonelists v11r3 Lee Schermerhorn, Mel Gorman
2008-02-27 21:47 ` [PATCH 1/6] Use zonelists instead of zones when direct reclaiming pages Lee Schermerhorn, Mel Gorman
2008-02-27 21:47 ` [PATCH 2/6] Introduce node_zonelist() for accessing the zonelist for a GFP mask Lee Schermerhorn, Mel Gorman
2008-02-27 21:47 ` [PATCH 3/6] Remember what the preferred zone is for zone_statistics Lee Schermerhorn, Mel Gorman
2008-02-27 22:00 ` Christoph Lameter
2008-02-28 17:45 ` Lee Schermerhorn [this message]
2008-02-29 14:19 ` Mel Gorman
2008-02-29 2:30 ` KAMEZAWA Hiroyuki
2008-02-29 14:32 ` Mel Gorman
2008-02-27 21:47 ` [PATCH 4/6] Use two zonelist that are filtered by GFP mask Lee Schermerhorn, Mel Gorman
2008-02-28 21:32 ` Andrew Morton
2008-02-28 21:53 ` Lee Schermerhorn
2008-02-29 2:37 ` KAMEZAWA Hiroyuki
2008-02-29 14:50 ` Mel Gorman
2008-02-29 15:48 ` Lee Schermerhorn
2008-02-29 21:07 ` Christoph Lameter
2008-03-04 18:01 ` Mel Gorman
2008-03-05 16:06 ` [PATCH] 2.6.25-rc3-mm1 - Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask Lee Schermerhorn
2008-03-05 18:03 ` Nishanth Aravamudan
2008-03-05 19:02 ` Lee Schermerhorn
2008-03-06 1:04 ` Nishanth Aravamudan
2008-03-06 15:38 ` Lee Schermerhorn
2008-03-06 21:24 ` [PATCH] Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask rework Lee Schermerhorn
2008-03-07 17:35 ` Nishanth Aravamudan
2008-03-07 18:31 ` Lee Schermerhorn
2008-03-08 0:27 ` Nishanth Aravamudan
2008-03-06 0:39 ` [PATCH] 2.6.25-rc3-mm1 - Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask Andrew Morton
2008-03-06 15:17 ` Lee Schermerhorn
2008-03-06 18:41 ` [PATCH 4/6] Use two zonelist that are filtered by GFP mask Mel Gorman
2008-02-27 21:47 ` [PATCH 5/6] Have zonelist contains structs with both a zone pointer and zone_idx Lee Schermerhorn, Mel Gorman
2008-02-29 7:49 ` KOSAKI Motohiro
2008-02-27 21:47 ` [PATCH 6/6] Filter based on a nodemask as well as a gfp_mask Lee Schermerhorn, Mel Gorman
2008-02-29 2:59 ` KAMEZAWA Hiroyuki
2008-03-07 11:56 ` Mel Gorman
2008-02-29 8:48 ` KOSAKI Motohiro
2008-02-27 21:53 ` [PATCH 0/6] Use two zonelists per node instead of multiple zonelists v11r3 Lee Schermerhorn
2008-02-29 14:12 ` Mel Gorman
-- strict thread matches above, loose matches on Subject: below --
2007-12-11 20:21 [PATCH 0/6] Use two zonelists per node instead of multiple zonelists v11r2 Mel Gorman
2007-12-11 20:22 ` [PATCH 3/6] Remember what the preferred zone is for zone_statistics Mel Gorman
2007-11-21 0:38 [PATCH 0/6] Use two zonelists per node instead of multiple zonelists v10 Mel Gorman
2007-11-21 0:39 ` [PATCH 3/6] Remember what the preferred zone is for zone_statistics Mel Gorman
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