linux-kernel - Re: [PATCH RFC 05/29] mm/balloon_compaction: make PageOffline sticky

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Message-ID: <aGI3p8phIxsNWxwG@hyeyoo>
Date: Mon, 30 Jun 2025 16:07:19 +0900
From: Harry Yoo <harry.yoo@...cle.com>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-doc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
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        Qi Zheng <zhengqi.arch@...edance.com>,
        Shakeel Butt <shakeel.butt@...ux.dev>
Subject: Re: [PATCH RFC 05/29] mm/balloon_compaction: make PageOffline sticky

On Wed, Jun 18, 2025 at 07:39:48PM +0200, David Hildenbrand wrote:
> Let the buddy handle clearing the type.
> 
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---

with the updated commit message,
Acked-by: Harry Yoo <harry.yoo@...cle.com>

>  include/linux/balloon_compaction.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h
> index b9f19da37b089..bfc6e50bd004b 100644
> --- a/include/linux/balloon_compaction.h
> +++ b/include/linux/balloon_compaction.h
> @@ -140,7 +140,7 @@ static inline void balloon_page_finalize(struct page *page)
>  		__ClearPageMovable(page);
>  		set_page_private(page, 0);
>  	}
> -	__ClearPageOffline(page);
> +	/* PageOffline is sticky until the page is freed to the buddy. */
>  }
>  
>  /*
> -- 
> 2.49.0
> 

-- 
Cheers,
Harry / Hyeonggon