[PATCH 16/59] mm/swap: Convert put_swap_page() to put_swap_folio()

["Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>]

With all callers now using a folio, we can convert this function.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 include/linux/swap.h | 4 ++--
 mm/shmem.c           | 2 +-
 mm/swap_slots.c      | 2 +-
 mm/swap_state.c      | 6 +++---
 mm/swapfile.c        | 4 ++--
 mm/vmscan.c          | 2 +-
 6 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 4595cbc1cb02..f16c9af6bf32 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -487,7 +487,7 @@ static inline long get_nr_swap_pages(void)
 extern void si_swapinfo(struct sysinfo *);
 swp_entry_t folio_alloc_swap(struct folio *folio);
 bool folio_free_swap(struct folio *folio);
-extern void put_swap_page(struct page *page, swp_entry_t entry);
+void put_swap_folio(struct folio *folio, swp_entry_t entry);
 extern swp_entry_t get_swap_page_of_type(int);
 extern int get_swap_pages(int n, swp_entry_t swp_entries[], int entry_size);
 extern int add_swap_count_continuation(swp_entry_t, gfp_t);
@@ -572,7 +572,7 @@ static inline void swap_free(swp_entry_t swp)
 {
 }
 
-static inline void put_swap_page(struct page *page, swp_entry_t swp)
+static inline void put_swap_folio(struct folio *folio, swp_entry_t swp)
 {
 }
 
diff --git a/mm/shmem.c b/mm/shmem.c
index 49c3f59b5b76..4693edb33648 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1424,7 +1424,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
 	}
 
 	mutex_unlock(&shmem_swaplist_mutex);
-	put_swap_page(&folio->page, swap);
+	put_swap_folio(folio, swap);
 redirty:
 	folio_mark_dirty(folio);
 	if (wbc->for_reclaim)
diff --git a/mm/swap_slots.c b/mm/swap_slots.c
index 10b94d64cc25..0bec1f705f8e 100644
--- a/mm/swap_slots.c
+++ b/mm/swap_slots.c
@@ -343,7 +343,7 @@ swp_entry_t folio_alloc_swap(struct folio *folio)
 	get_swap_pages(1, &entry, 1);
 out:
 	if (mem_cgroup_try_charge_swap(folio, entry)) {
-		put_swap_page(&folio->page, entry);
+		put_swap_folio(folio, entry);
 		entry.val = 0;
 	}
 	return entry;
diff --git a/mm/swap_state.c b/mm/swap_state.c
index ecf1accc2fb1..ea354efd3735 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -218,7 +218,7 @@ bool add_to_swap(struct folio *folio)
 	return true;
 
 fail:
-	put_swap_page(&folio->page, entry);
+	put_swap_folio(folio, entry);
 	return false;
 }
 
@@ -237,7 +237,7 @@ void delete_from_swap_cache(struct folio *folio)
 	__delete_from_swap_cache(folio, entry, NULL);
 	xa_unlock_irq(&address_space->i_pages);
 
-	put_swap_page(&folio->page, entry);
+	put_swap_folio(folio, entry);
 	folio_ref_sub(folio, folio_nr_pages(folio));
 }
 
@@ -498,7 +498,7 @@ struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
 	return &folio->page;
 
 fail_unlock:
-	put_swap_page(&folio->page, entry);
+	put_swap_folio(folio, entry);
 	folio_unlock(folio);
 	folio_put(folio);
 	return NULL;
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 880871f4c6d4..186511a8ef4f 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1328,7 +1328,7 @@ void swap_free(swp_entry_t entry)
 /*
  * Called after dropping swapcache to decrease refcnt to swap entries.
  */
-void put_swap_page(struct page *page, swp_entry_t entry)
+void put_swap_folio(struct folio *folio, swp_entry_t entry)
 {
 	unsigned long offset = swp_offset(entry);
 	unsigned long idx = offset / SWAPFILE_CLUSTER;
@@ -1337,7 +1337,7 @@ void put_swap_page(struct page *page, swp_entry_t entry)
 	unsigned char *map;
 	unsigned int i, free_entries = 0;
 	unsigned char val;
-	int size = swap_entry_size(thp_nr_pages(page));
+	int size = swap_entry_size(folio_nr_pages(folio));
 
 	si = _swap_info_get(entry);
 	if (!si)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index d3e26712dbc1..ac7f6f77e28a 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1339,7 +1339,7 @@ static int __remove_mapping(struct address_space *mapping, struct folio *folio,
 			shadow = workingset_eviction(folio, target_memcg);
 		__delete_from_swap_cache(folio, swap, shadow);
 		xa_unlock_irq(&mapping->i_pages);
-		put_swap_page(&folio->page, swap);
+		put_swap_folio(folio, swap);
 	} else {
 		void (*free_folio)(struct folio *);
 
-- 
2.35.1