mm/swap: convert deactivate_page() to folio_deactivate()

Deactivate_page() has already been converted to use folios, this change
converts it to take in a folio argument instead of calling page_folio(). 
It also renames the function folio_deactivate() to be more consistent with
other folio functions.

[[email protected]: fix left-over comments, per Yu Zhao]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Vishal Moola (Oracle) <[email protected]>
Reviewed-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: SeongJae Park <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: VMoola

include/linux/swap.h

@@ -401,7 +401,7 @@ extern void lru_add_drain(void);
 extern void lru_add_drain_cpu(int cpu);
 extern void lru_add_drain_cpu_zone(struct zone *zone);
 extern void lru_add_drain_all(void);
-extern void deactivate_page(struct page *page);
+void folio_deactivate(struct folio *folio);
 void folio_mark_lazyfree(struct folio *folio);
 extern void swap_setup(void);
 

mm/damon/paddr.c

@@ -297,7 +297,7 @@ static inline unsigned long damon_pa_mark_accessed_or_deactivate(
 		if (mark_accessed)
 			folio_mark_accessed(folio);
 		else
-			deactivate_page(&folio->page);
+			folio_deactivate(folio);
 		folio_put(folio);
 		applied += folio_nr_pages(folio);
 	}

mm/madvise.c

@@ -416,7 +416,7 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd,
 					list_add(&folio->lru, &folio_list);
 			}
 		} else
-			deactivate_page(&folio->page);
+			folio_deactivate(folio);
 huge_unlock:
 		spin_unlock(ptl);
 		if (pageout)
@@ -510,7 +510,7 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd,
 					list_add(&folio->lru, &folio_list);
 			}
 		} else
-			deactivate_page(&folio->page);
+			folio_deactivate(folio);
 	}
 
 	arch_leave_lazy_mmu_mode();

mm/page-writeback.c

@@ -2846,11 +2846,11 @@ bool folio_mark_dirty(struct folio *folio)
 
 	if (likely(mapping)) {
 		/*
-		 * readahead/lru_deactivate_page could remain
+		 * readahead/folio_deactivate could remain
 		 * PG_readahead/PG_reclaim due to race with folio_end_writeback
 		 * About readahead, if the folio is written, the flags would be
 		 * reset. So no problem.
-		 * About lru_deactivate_page, if the folio is redirtied,
+		 * About folio_deactivate, if the folio is redirtied,
 		 * the flag will be reset. So no problem. but if the
 		 * folio is used by readahead it will confuse readahead
 		 * and make it restart the size rampup process. But it's

mm/swap.c

@@ -733,17 +733,15 @@ void deactivate_file_folio(struct folio *folio)
 }
 
 /*
- * deactivate_page - deactivate a page
- * @page: page to deactivate
+ * folio_deactivate - deactivate a folio
+ * @folio: folio to deactivate
  *
- * deactivate_page() moves @page to the inactive list if @page was on the active
- * list and was not an unevictable page.  This is done to accelerate the reclaim
- * of @page.
+ * folio_deactivate() moves @folio to the inactive list if @folio was on the
+ * active list and was not unevictable. This is done to accelerate the
+ * reclaim of @folio.
  */
-void deactivate_page(struct page *page)
+void folio_deactivate(struct folio *folio)
 {
-	struct folio *folio = page_folio(page);
-
 	if (folio_test_lru(folio) && !folio_test_unevictable(folio) &&
 	    (folio_test_active(folio) || lru_gen_enabled())) {
 		struct folio_batch *fbatch;

mm/vmscan.c

@@ -1920,7 +1920,7 @@ static unsigned int shrink_folio_list(struct list_head *folio_list,
 			     !test_bit(PGDAT_DIRTY, &pgdat->flags))) {
 				/*
 				 * Immediately reclaim when written back.
-				 * Similar in principle to deactivate_page()
+				 * Similar in principle to folio_deactivate()
 				 * except we already have the folio isolated
 				 * and know it's dirty
 				 */