linux-kernel - Re: [PATCH v5 1/3] mm: introduce compaction and migration for virtio ballooned pages

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Message-ID: <20120806190053.GA3968@t510.redhat.com>
Date:	Mon, 6 Aug 2012 16:00:54 -0300
From:	Rafael Aquini <aquini@...hat.com>
To:	Rik van Riel <riel@...hat.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	"Michael S. Tsirkin" <mst@...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>
Subject: Re: [PATCH v5 1/3] mm: introduce compaction and migration for virtio
 ballooned pages

On Mon, Aug 06, 2012 at 02:38:23PM -0400, Rik van Riel wrote:
> On 08/06/2012 09:56 AM, Rafael Aquini wrote:
> 
> >@@ -846,6 +861,21 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private,
> >  			goto out;
> >
> >  	rc = __unmap_and_move(page, newpage, force, offlining, mode);
> >+
> >+	if (unlikely(is_balloon_page(newpage)&&
> >+		     balloon_compaction_enabled())) {
> 
> Could that be collapsed into one movable_balloon_page(newpage) function
> call?
> 
Keeping is_balloon_page() as is, and itroducing this new movable_balloon_page()
function call, or just doing a plain rename, as Andrew has first suggested?


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