linux-kernel - Re: [PATCH v6 1/3] mm: introduce compaction and migration for virtio ballooned pages

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Message-ID: <20120809151218.GB2719@t510.redhat.com>
Date:	Thu, 9 Aug 2012 12:12:19 -0300
From:	Rafael Aquini <aquini@...hat.com>
To:	Mel Gorman <mel@....ul.ie>
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>,
	Rik van Riel <riel@...hat.com>,
	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 v6 1/3] mm: introduce compaction and migration for virtio
 ballooned pages

On Thu, Aug 09, 2012 at 11:48:36AM -0300, Rafael Aquini wrote:
> Sure! 
> what do you think of:
> 
> +/* putback_lru_page() counterpart for a ballooned page */
> +void putback_balloon_page(struct page *page)
> +{
> +   lock_page(page);
> +   if (!WARN_ON(!movable_balloon_page(page))) {
> +           __putback_balloon_page(page);
> +           put_page(page);
> +   }
> +   unlock_page(page);
> +}
>
Or perhaps
 
+/* putback_lru_page() counterpart for a ballooned page */
+void putback_balloon_page(struct page *page)
+{
+   if (!WARN_ON(!movable_balloon_page(page))) {
+           lock_page(page);
+           __putback_balloon_page(page);
+           put_page(page);
+           unlock_page(page);
+   }
+}

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