linux-kernel - Re: [PATCH 7/7] mm/balloon_compaction: general cleanup

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Message-ID: <20140829210955.GB11878@t510.redhat.com>
Date:	Fri, 29 Aug 2014 17:09:56 -0400
From:	Rafael Aquini <aquini@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Konstantin Khlebnikov <k.khlebnikov@...sung.com>,
	linux-mm@...ck.org, Sasha Levin <sasha.levin@...cle.com>,
	Andrey Ryabinin <ryabinin.a.a@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/7] mm/balloon_compaction: general cleanup

On Fri, Aug 29, 2014 at 02:05:21PM -0700, Andrew Morton wrote:
> On Wed, 20 Aug 2014 19:05:09 +0400 Konstantin Khlebnikov <k.khlebnikov@...sung.com> wrote:
> 
> > * move special branch for balloon migraion into migrate_pages
> > * remove special mapping for balloon and its flag AS_BALLOON_MAP
> > * embed struct balloon_dev_info into struct virtio_balloon
> > * cleanup balloon_page_dequeue, kill balloon_page_free
> > 
> 
> grump.
> 
> diff -puN include/linux/balloon_compaction.h~mm-balloon_compaction-general-cleanup-fix include/linux/balloon_compaction.h
> --- a/include/linux/balloon_compaction.h~mm-balloon_compaction-general-cleanup-fix
> +++ a/include/linux/balloon_compaction.h
> @@ -145,7 +145,7 @@ static inline void
>  balloon_page_insert(struct balloon_dev_info *balloon, struct page *page)
>  {
>  	__SetPageBalloon(page);
> -	list_add(&page->lru, head);
> +	list_add(&page->lru, &balloon->pages);
>  }
>  
>  static inline void balloon_page_delete(struct page *page, bool isolated)
> 
> 
> This obviously wasn't tested with CONFIG_BALLOON_COMPACTION=n.  Please
> complete the testing of this patchset and let us know the result?
>

That also reminds me why I suggested moving those as static inlines into mm.h, 
instead of getting them hidden in mm/balloon_compaction.c

Cheers,
-- Rafael
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