From: Minchan Kim <minchan.kim@gmail.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>,
Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Christoph Lameter <cl@linux-foundation.org>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
David Rientjes <rientjes@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Rik van Riel <riel@redhat.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 14/14] mm,migration: Allow the migration of PageSwapCache pages
Date: Thu, 1 Apr 2010 11:39:42 +0900 [thread overview]
Message-ID: <q2r28c262361003311939zbfa8e980ifa9c58cb9d62dc83@mail.gmail.com> (raw)
In-Reply-To: <20100401085718.d091eda6.kamezawa.hiroyu@jp.fujitsu.com>
On Thu, Apr 1, 2010 at 8:57 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@jp.fujitsu.com>
>
> rmap_walk_anon() is called against unmapped pages.
> Then, !page_mapped() is always true. So, the behavior will not be different from
> the last one.
>
rmap_walk_anon can be also called in case of failing try_to_unmap.
Then, In unmap_and_move, page_mapped is true and
remove_migration_ptes can be called.
But I am not sure this Mel's patch about this part is really needed.
> Thanks,
> -Kame
>
>
--
Kind regards,
Minchan Kim
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next prev parent reply other threads:[~2010-04-01 2:39 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-30 9:14 [PATCH 0/14] Memory Compaction v6 Mel Gorman
2010-03-30 9:14 ` [PATCH 01/14] mm,migration: Take a reference to the anon_vma before migrating Mel Gorman
2010-03-30 9:14 ` [PATCH 02/14] mm,migration: Do not try to migrate unmapped anonymous pages Mel Gorman
2010-03-30 9:14 ` [PATCH 03/14] mm: Share the anon_vma ref counts between KSM and page migration Mel Gorman
2010-03-30 9:14 ` [PATCH 04/14] Allow CONFIG_MIGRATION to be set without CONFIG_NUMA or memory hot-remove Mel Gorman
2010-03-30 9:14 ` [PATCH 05/14] Export unusable free space index via /proc/unusable_index Mel Gorman
2010-03-30 9:14 ` [PATCH 06/14] Export fragmentation index via /proc/extfrag_index Mel Gorman
2010-03-30 9:14 ` [PATCH 07/14] Move definition for LRU isolation modes to a header Mel Gorman
2010-03-30 9:14 ` [PATCH 08/14] Memory compaction core Mel Gorman
2010-03-30 9:14 ` [PATCH 09/14] Add /proc trigger for memory compaction Mel Gorman
2010-03-30 9:14 ` [PATCH 10/14] Add /sys trigger for per-node " Mel Gorman
2010-03-30 9:14 ` [PATCH 11/14] Direct compact when a high-order allocation fails Mel Gorman
2010-03-30 9:14 ` [PATCH 12/14] Add a tunable that decides when memory should be compacted and when it should be reclaimed Mel Gorman
2010-03-30 9:14 ` [PATCH 13/14] Do not compact within a preferred zone after a compaction failure Mel Gorman
2010-03-30 9:14 ` [PATCH 14/14] mm,migration: Allow the migration of PageSwapCache pages Mel Gorman
2010-03-31 5:26 ` KAMEZAWA Hiroyuki
2010-03-31 11:27 ` Mel Gorman
2010-03-31 23:57 ` KAMEZAWA Hiroyuki
2010-04-01 2:39 ` Minchan Kim [this message]
2010-04-01 2:43 ` Minchan Kim
2010-04-01 3:01 ` KAMEZAWA Hiroyuki
2010-04-01 4:44 ` Minchan Kim
2010-04-01 5:42 ` KAMEZAWA Hiroyuki
2010-04-01 10:51 ` Minchan Kim
2010-04-01 17:36 ` Mel Gorman
2010-04-02 0:20 ` Minchan Kim
2010-04-02 8:51 ` Mel Gorman
2010-04-02 0:21 ` KAMEZAWA Hiroyuki
2010-04-02 8:52 ` Mel Gorman
2010-04-01 9:30 ` Mel Gorman
2010-04-01 10:42 ` Minchan Kim
-- strict thread matches above, loose matches on Subject: below --
2010-04-02 16:02 [PATCH 0/14] Memory Compaction v7 Mel Gorman
2010-04-02 16:02 ` [PATCH 14/14] mm,migration: Allow the migration of PageSwapCache pages Mel Gorman
2010-04-06 6:54 ` KAMEZAWA Hiroyuki
2010-04-06 15:37 ` Minchan Kim
2010-04-07 0:06 ` Andrew Morton
2010-04-07 16:49 ` Mel Gorman
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