linux-kernel - Re: [PATCH v11 7/7] mm: add vm event counters for balloon pages compaction

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Message-ID: <20121111192206.GB4290@x61.redhat.com>
Date:	Sun, 11 Nov 2012 17:22:07 -0200
From:	Rafael Aquini <aquini@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mel@....ul.ie>,
	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Minchan Kim <minchan@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH v11 7/7] mm: add vm event counters for balloon pages
 compaction

On Sat, Nov 10, 2012 at 05:55:38PM +0200, Michael S. Tsirkin wrote:
> >  	mutex_unlock(&vb->balloon_lock);
> > +	balloon_event_count(COMPACTBALLOONMIGRATED);
> >  
> >  	return MIGRATEPAGE_BALLOON_SUCCESS;
> >  }
> 
> Looks like any ballon would need to do this.
> Can this  chunk go into caller instead?
>

Good catch. It's done, already (v12 just hit the wild).

Thanks!
-- Rafael
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