Re: [PATCH v4 3/7] mm: memcontrol: convert NR_FILE_THPS account to pages

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On Fri, Dec 11, 2020 at 12:19:50PM +0800, Muchun Song wrote:
> +++ b/mm/filemap.c
> @@ -207,7 +207,7 @@ static void unaccount_page_cache_page(struct address_space *mapping,
>  		if (PageTransHuge(page))
>  			__dec_lruvec_page_state(page, NR_SHMEM_THPS);
>  	} else if (PageTransHuge(page)) {
> -		__dec_lruvec_page_state(page, NR_FILE_THPS);
> +		__mod_lruvec_page_state(page, NR_FILE_THPS, -HPAGE_PMD_NR);

+               __mod_lruvec_page_state(page, NR_FILE_THPS, -nr);

> +++ b/mm/huge_memory.c
> @@ -2748,7 +2748,8 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
>  			if (PageSwapBacked(head))
>  				__dec_lruvec_page_state(head, NR_SHMEM_THPS);
>  			else
> -				__dec_lruvec_page_state(head, NR_FILE_THPS);
> +				__mod_lruvec_page_state(head, NR_FILE_THPS,
> +							-HPAGE_PMD_NR);

+                               __mod_lruvec_page_state(head, NR_FILE_THPS,
+                                               -thp_nr_pages(head));





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