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Date: Fri, 5 Apr 2024 11:06:52 +0200
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Subject: Re: [PATCH v3 13/14] mm/ksm: use folio_set_stable_node in
 try_to_merge_one_page
To: alexs@kernel.org, Matthew Wilcox <willy@infradead.org>,
 Andrea Arcangeli <aarcange@redhat.com>,
 Izik Eidus <izik.eidus@ravellosystems.com>,
 Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
 linux-kernel@vger.kernel.org, ryncsn@gmail.com
Cc: Hugh Dickins <hughd@google.com>, Chris Wright <chrisw@sous-sol.org>
References: <20240325124904.398913-1-alexs@kernel.org>
 <20240325124904.398913-14-alexs@kernel.org>
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From: David Hildenbrand <david@redhat.com>
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In-Reply-To: <20240325124904.398913-14-alexs@kernel.org>
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On 25.03.24 13:49, alexs@kernel.org wrote:
> From: "Alex Shi (tencent)" <alexs@kernel.org>
> 
> Only single page could be reached where we set stable node after write
> protect, so use folio converted func to replace page's.
> 
> Signed-off-by: Alex Shi (tencent) <alexs@kernel.org>
> Cc: Izik Eidus <izik.eidus@ravellosystems.com>
> Cc: Matthew Wilcox <willy@infradead.org>
> Cc: Andrea Arcangeli <aarcange@redhat.com>
> Cc: Hugh Dickins <hughd@google.com>
> Cc: Chris Wright <chrisw@sous-sol.org>
> ---
>   mm/ksm.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/ksm.c b/mm/ksm.c
> index 15a78a9bab59..d7c4cc4a0cc1 100644
> --- a/mm/ksm.c
> +++ b/mm/ksm.c
> @@ -1518,7 +1518,7 @@ static int try_to_merge_one_page(struct vm_area_struct *vma,
>   			 * PageAnon+anon_vma to PageKsm+NULL stable_node:
>   			 * stable_tree_insert() will update stable_node.
>   			 */
> -			set_page_stable_node(page, NULL);
> +			folio_set_stable_node(page_folio(page), NULL);
>   			mark_page_accessed(page);
>   			/*
>   			 * Page reclaim just frees a clean page with no dirty

Reviewed-by: David Hildenbrand <david@redhat.com>

-- 
Cheers,

David / dhildenb