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Date:   Tue, 16 Jun 2020 11:36:01 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     js1304@gmail.com
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Johannes Weiner <hannes@cmpxchg.org>,
        Rik van Riel <riel@surriel.com>,
        Minchan Kim <minchan.kim@gmail.com>,
        Michal Hocko <mhocko@suse.com>, kernel-team@lge.com,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH for v5.8 2/3] mm/swap: fix for
 "mm: workingset: age nonresident information alongside anonymous pages"
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On Tue, 16 Jun 2020 15:16:43 +0900 js1304@gmail.com wrote:

> Subject: [PATCH for v5.8 2/3] mm/swap: fix for "mm: workingset: age nonresident information alongside anonymous pages"

I'm having trouble locating such a patch.

> Non-file-lru page could also be activated in mark_page_accessed()
> and we need to count this activation for nonresident_age.
> 
> Note that it's better for this patch to be squashed into the patch
> "mm: workingset: age nonresident information alongside anonymous pages".
> 
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
> ---
>  mm/swap.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/mm/swap.c b/mm/swap.c
> index 667133d..c5d5114 100644
> --- a/mm/swap.c
> +++ b/mm/swap.c
> @@ -443,8 +443,7 @@ void mark_page_accessed(struct page *page)
>  		else
>  			__lru_cache_activate_page(page);
>  		ClearPageReferenced(page);
> -		if (page_is_file_lru(page))
> -			workingset_activation(page);
> +		workingset_activation(page);
>  	}
>  	if (page_is_idle(page))
>  		clear_page_idle(page);

AFAICT this patch Fixes: a528910e12ec7ee ("mm: thrash detection-based file
cache sizing")?