From: Minchan Kim <minchan@kernel.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Linux-MM <linux-mm@kvack.org>, Rik van Riel <riel@redhat.com>,
Jim Schutt <jaschut@sandia.gov>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/5] mm: compaction: Capture a suitable high-order page immediately when it is made available
Date: Fri, 10 Aug 2012 08:35:03 +0900 [thread overview]
Message-ID: <20120809233503.GE21033@bbox> (raw)
In-Reply-To: <1344520165-24419-4-git-send-email-mgorman@suse.de>
On Thu, Aug 09, 2012 at 02:49:23PM +0100, Mel Gorman wrote:
> While compaction is migrating pages to free up large contiguous blocks for
> allocation it races with other allocation requests that may steal these
> blocks or break them up. This patch alters direct compaction to capture a
> suitable free page as soon as it becomes available to reduce this race. It
> uses similar logic to split_free_page() to ensure that watermarks are
> still obeyed.
>
> Signed-off-by: Mel Gorman <mgorman@suse.de>
> Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
--
Kind regards,
Minchan Kim
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WARNING: multiple messages have this Message-ID (diff)
From: Minchan Kim <minchan@kernel.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Linux-MM <linux-mm@kvack.org>, Rik van Riel <riel@redhat.com>,
Jim Schutt <jaschut@sandia.gov>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/5] mm: compaction: Capture a suitable high-order page immediately when it is made available
Date: Fri, 10 Aug 2012 08:35:03 +0900 [thread overview]
Message-ID: <20120809233503.GE21033@bbox> (raw)
In-Reply-To: <1344520165-24419-4-git-send-email-mgorman@suse.de>
On Thu, Aug 09, 2012 at 02:49:23PM +0100, Mel Gorman wrote:
> While compaction is migrating pages to free up large contiguous blocks for
> allocation it races with other allocation requests that may steal these
> blocks or break them up. This patch alters direct compaction to capture a
> suitable free page as soon as it becomes available to reduce this race. It
> uses similar logic to split_free_page() to ensure that watermarks are
> still obeyed.
>
> Signed-off-by: Mel Gorman <mgorman@suse.de>
> Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
--
Kind regards,
Minchan Kim
next prev parent reply other threads:[~2012-08-09 23:33 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-09 13:49 [RFC PATCH 0/5] Improve hugepage allocation success rates under load V3 Mel Gorman
2012-08-09 13:49 ` Mel Gorman
2012-08-09 13:49 ` [PATCH 1/5] mm: compaction: Update comment in try_to_compact_pages Mel Gorman
2012-08-09 13:49 ` Mel Gorman
2012-08-09 13:49 ` [PATCH 2/5] mm: vmscan: Scale number of pages reclaimed by reclaim/compaction based on failures Mel Gorman
2012-08-09 13:49 ` Mel Gorman
2012-08-10 8:49 ` Minchan Kim
2012-08-10 8:49 ` Minchan Kim
2012-08-09 13:49 ` [PATCH 3/5] mm: compaction: Capture a suitable high-order page immediately when it is made available Mel Gorman
2012-08-09 13:49 ` Mel Gorman
2012-08-09 23:35 ` Minchan Kim [this message]
2012-08-09 23:35 ` Minchan Kim
2012-08-09 13:49 ` [PATCH 4/5] mm: have order > 0 compaction start off where it left Mel Gorman
2012-08-09 13:49 ` Mel Gorman
2012-08-09 13:49 ` [PATCH 5/5] mm: have order > 0 compaction start near a pageblock with free pages Mel Gorman
2012-08-09 13:49 ` Mel Gorman
2012-08-09 14:36 ` [RFC PATCH 0/5] Improve hugepage allocation success rates under load V3 Jim Schutt
2012-08-09 14:36 ` Jim Schutt
2012-08-09 14:51 ` Mel Gorman
2012-08-09 14:51 ` Mel Gorman
2012-08-09 18:16 ` Jim Schutt
2012-08-09 18:16 ` Jim Schutt
2012-08-09 20:46 ` Mel Gorman
2012-08-09 20:46 ` Mel Gorman
2012-08-09 22:38 ` Jim Schutt
2012-08-09 22:38 ` Jim Schutt
2012-08-10 11:02 ` Mel Gorman
2012-08-10 11:02 ` Mel Gorman
2012-08-10 17:20 ` Jim Schutt
2012-08-10 17:20 ` Jim Schutt
2012-08-12 20:22 ` Mel Gorman
2012-08-12 20:22 ` Mel Gorman
2012-08-13 20:35 ` Jim Schutt
2012-08-13 20:35 ` Jim Schutt
2012-08-14 9:23 ` Mel Gorman
2012-08-14 9:23 ` Mel Gorman
-- strict thread matches above, loose matches on Subject: below --
2012-08-14 16:41 [PATCH 0/5] Improve hugepage allocation success rates under load V4 Mel Gorman
2012-08-14 16:41 ` [PATCH 3/5] mm: compaction: Capture a suitable high-order page immediately when it is made available Mel Gorman
2012-08-14 16:41 ` Mel Gorman
2012-08-08 19:08 [RFC PATCH 0/5] Improve hugepage allocation success rates under load V2 Mel Gorman
2012-08-08 19:08 ` [PATCH 3/5] mm: compaction: Capture a suitable high-order page immediately when it is made available Mel Gorman
2012-08-08 19:08 ` Mel Gorman
2012-08-09 1:33 ` Minchan Kim
2012-08-09 1:33 ` Minchan Kim
2012-08-09 8:11 ` Mel Gorman
2012-08-09 8:11 ` Mel Gorman
2012-08-09 8:41 ` Minchan Kim
2012-08-09 8:41 ` Minchan Kim
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