linux-kernel - Re: [PATCH 2/2] mm: compaction: add /proc/vmstat entry for rescued MIGRATE

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Message-Id: <20120622131254.cc606c00.akpm@linux-foundation.org>
Date:	Fri, 22 Jun 2012 13:12:54 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...il.com>
Cc:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Hugh Dickins <hughd@...gle.com>, Dave Jones <davej@...hat.com>,
	Cong Wang <amwang@...hat.com>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	Mel Gorman <mgorman@...e.de>, Minchan Kim <minchan@...nel.org>,
	Rik van Riel <riel@...hat.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [PATCH 2/2] mm: compaction: add /proc/vmstat entry for rescued
 MIGRATE_UNMOVABLE pageblocks

On Thu, 14 Jun 2012 12:21:22 -0400
KOSAKI Motohiro <kosaki.motohiro@...il.com> wrote:

> (6/14/12 12:02 PM), Bartlomiej Zolnierkiewicz wrote:
> > From: Bartlomiej Zolnierkiewicz<b.zolnierkie@...sung.com>
> > Subject: [PATCH] mm: compaction: add /proc/vmstat entry for rescued MIGRATE_UNMOVABLE pageblocks
> >
> > compact_rescued_unmovable_blocks shows the number of MIGRATE_UNMOVABLE
> > pageblocks converted back to MIGRATE_MOVABLE type by the memory compaction
> > code.  Non-zero values indicate that large kernel-originated allocations
> > of MIGRATE_UNMOVABLE type happen in the system and need special handling
> > from the memory compaction code.
> >
> > This new vmstat entry is optional but useful for development and understanding
> > the system.
> 
> This description don't describe why admin need this stat and how to use it.
> 

Was there a response to this?

patch [1/2] doesn't apply.  Refresh and resend the series, please?
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