From 63b774993dd02b17127cb404b7362fc436632995 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Tue, 27 Feb 2024 17:42:52 +0000 Subject: [PATCH] mm: convert free_swap_cache() to take a folio All but one caller already has a folio, so convert free_page_and_swap_cache() to have a folio and remove the call to page_folio(). Link: https://lkml.kernel.org/r/20240227174254.710559-19-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Ryan Roberts Reviewed-by: David Hildenbrand Cc: Mel Gorman Signed-off-by: Andrew Morton --- include/linux/swap.h | 8 ++++---- mm/khugepaged.c | 2 +- mm/memory.c | 2 +- mm/swap_state.c | 12 ++++++------ 4 files changed, 12 insertions(+), 12 deletions(-) diff --git a/include/linux/swap.h b/include/linux/swap.h index 8d28f6091a32..1ad6f63d1a52 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -447,9 +447,9 @@ static inline unsigned long total_swapcache_pages(void) return global_node_page_state(NR_SWAPCACHE); } -extern void free_swap_cache(struct page *page); -extern void free_page_and_swap_cache(struct page *); -extern void free_pages_and_swap_cache(struct encoded_page **, int); +void free_swap_cache(struct folio *folio); +void free_page_and_swap_cache(struct page *); +void free_pages_and_swap_cache(struct encoded_page **, int); /* linux/mm/swapfile.c */ extern atomic_long_t nr_swap_pages; extern long total_swap_pages; @@ -531,7 +531,7 @@ static inline void put_swap_device(struct swap_info_struct *si) /* used to sanity check ptes in zap_pte_range when CONFIG_SWAP=0 */ #define free_swap_and_cache(e) is_pfn_swap_entry(e) -static inline void free_swap_cache(struct page *page) +static inline void free_swap_cache(struct folio *folio) { } diff --git a/mm/khugepaged.c b/mm/khugepaged.c index b9223e803262..38830174608f 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -731,7 +731,7 @@ static void __collapse_huge_page_copy_succeeded(pte_t *pte, node_stat_sub_folio(src, NR_ISOLATED_ANON + folio_is_file_lru(src)); folio_unlock(src); - free_swap_cache(&src->page); + free_swap_cache(src); folio_putback_lru(src); } } diff --git a/mm/memory.c b/mm/memory.c index 1c45b6a42a1b..75e0abda8642 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3452,7 +3452,7 @@ static vm_fault_t wp_page_copy(struct vm_fault *vmf) folio_put(new_folio); if (old_folio) { if (page_copied) - free_swap_cache(&old_folio->page); + free_swap_cache(old_folio); folio_put(old_folio); } diff --git a/mm/swap_state.c b/mm/swap_state.c index 96b5c585f047..bfc7e8c58a6d 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -283,10 +283,8 @@ void clear_shadow_from_swap_cache(int type, unsigned long begin, * folio_free_swap() _with_ the lock. * - Marcelo */ -void free_swap_cache(struct page *page) +void free_swap_cache(struct folio *folio) { - struct folio *folio = page_folio(page); - if (folio_test_swapcache(folio) && !folio_mapped(folio) && folio_trylock(folio)) { folio_free_swap(folio); @@ -300,9 +298,11 @@ void free_swap_cache(struct page *page) */ void free_page_and_swap_cache(struct page *page) { - free_swap_cache(page); + struct folio *folio = page_folio(page); + + free_swap_cache(folio); if (!is_huge_zero_page(page)) - put_page(page); + folio_put(folio); } /* @@ -319,7 +319,7 @@ void free_pages_and_swap_cache(struct encoded_page **pages, int nr) for (int i = 0; i < nr; i++) { struct folio *folio = page_folio(encoded_page_ptr(pages[i])); - free_swap_cache(&folio->page); + free_swap_cache(folio); refs[folios.nr] = 1; if (unlikely(encoded_page_flags(pages[i]) & ENCODED_PAGE_BIT_NR_PAGES_NEXT))