[PATCH v4 06/12] mm/swap: rename subpage->page in folio_dup_swap/folio_put_swap

[Dev Jain <dev.jain@arm.com>]

Folios have pages, not subpages. Rename 'subpage' parameters to 'page'.

Signed-off-by: Dev Jain <dev.jain@arm.com>
---
 mm/swap.h     |  4 ++--
 mm/swapfile.c | 16 ++++++++--------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/mm/swap.h b/mm/swap.h
index a77016f2423b9..b57547c25ffc9 100644
--- a/mm/swap.h
+++ b/mm/swap.h
@@ -206,8 +206,8 @@ extern int swap_retry_table_alloc(swp_entry_t entry, gfp_t gfp);
  * folio_put_swap(): does the opposite thing of folio_dup_swap().
  */
 int folio_alloc_swap(struct folio *folio);
-int folio_dup_swap(struct folio *folio, struct page *subpage);
-void folio_put_swap(struct folio *folio, struct page *subpage);
+int folio_dup_swap(struct folio *folio, struct page *page);
+void folio_put_swap(struct folio *folio, struct page *page);
 
 /* For internal use */
 extern void __swap_cluster_free_entries(struct swap_info_struct *si,
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 08309c1dafa3b..62f083cff75eb 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1743,7 +1743,7 @@ int folio_alloc_swap(struct folio *folio)
 /**
  * folio_dup_swap() - Increase swap count of swap entries of a folio.
  * @folio: folio with swap entries bounded.
- * @subpage: if not NULL, only increase the swap count of this subpage.
+ * @page: if not NULL, only increase the swap count of this page.
  *
  * Typically called when the folio is unmapped and have its swap entry to
  * take its place: Swap entries allocated to a folio has count == 0 and pinned
@@ -1757,7 +1757,7 @@ int folio_alloc_swap(struct folio *folio)
  * swap_put_entries_direct on its swap entry before this helper returns, or
  * the swap count may underflow.
  */
-int folio_dup_swap(struct folio *folio, struct page *subpage)
+int folio_dup_swap(struct folio *folio, struct page *page)
 {
 	swp_entry_t entry = folio->swap;
 	unsigned long nr_pages = folio_nr_pages(folio);
@@ -1765,8 +1765,8 @@ int folio_dup_swap(struct folio *folio, struct page *subpage)
 	VM_WARN_ON_FOLIO(!folio_test_locked(folio), folio);
 	VM_WARN_ON_FOLIO(!folio_test_swapcache(folio), folio);
 
-	if (subpage) {
-		entry.val += folio_page_idx(folio, subpage);
+	if (page) {
+		entry.val += folio_page_idx(folio, page);
 		nr_pages = 1;
 	}
 
@@ -1777,13 +1777,13 @@ int folio_dup_swap(struct folio *folio, struct page *subpage)
 /**
  * folio_put_swap() - Decrease swap count of swap entries of a folio.
  * @folio: folio with swap entries bounded, must be in swap cache and locked.
- * @subpage: if not NULL, only decrease the swap count of this subpage.
+ * @page: if not NULL, only decrease the swap count of this page.
  *
  * This won't free the swap slots even if swap count drops to zero, they are
  * still pinned by the swap cache. User may call folio_free_swap to free them.
  * Context: Caller must ensure the folio is locked and in the swap cache.
  */
-void folio_put_swap(struct folio *folio, struct page *subpage)
+void folio_put_swap(struct folio *folio, struct page *page)
 {
 	swp_entry_t entry = folio->swap;
 	unsigned long nr_pages = folio_nr_pages(folio);
@@ -1792,8 +1792,8 @@ void folio_put_swap(struct folio *folio, struct page *subpage)
 	VM_WARN_ON_FOLIO(!folio_test_locked(folio), folio);
 	VM_WARN_ON_FOLIO(!folio_test_swapcache(folio), folio);
 
-	if (subpage) {
-		entry.val += folio_page_idx(folio, subpage);
+	if (page) {
+		entry.val += folio_page_idx(folio, page);
 		nr_pages = 1;
 	}
 
-- 
2.34.1