mm/damon: convert damon_ptep/pmdp_mkold() to use a folio

With damon_get_folio(), let's convert damon_ptep_mkold() and
damon_pmdp_mkold() to use a folio.

Link: https://lkml.kernel.org/r/20221230070849.63358-5-wangkefeng.wang@huawei.comSigned-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/damon/ops-common.c

@@ -40,9 +40,9 @@ struct folio *damon_get_folio(unsigned long pfn)
 void damon_ptep_mkold(pte_t *pte, struct mm_struct *mm, unsigned long addr)
 {
 	bool referenced = false;
-	struct page *page = damon_get_page(pte_pfn(*pte));
+	struct folio *folio = damon_get_folio(pte_pfn(*pte));
 
-	if (!page)
+	if (!folio)
 		return;
 
 	if (pte_young(*pte)) {
@@ -56,19 +56,19 @@ void damon_ptep_mkold(pte_t *pte, struct mm_struct *mm, unsigned long addr)
 #endif /* CONFIG_MMU_NOTIFIER */
 
 	if (referenced)
-		set_page_young(page);
+		folio_set_young(folio);
 
-	set_page_idle(page);
-	put_page(page);
+	folio_set_idle(folio);
+	folio_put(folio);
 }
 
 void damon_pmdp_mkold(pmd_t *pmd, struct mm_struct *mm, unsigned long addr)
 {
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 	bool referenced = false;
-	struct page *page = damon_get_page(pmd_pfn(*pmd));
+	struct folio *folio = damon_get_folio(pmd_pfn(*pmd));
 
-	if (!page)
+	if (!folio)
 		return;
 
 	if (pmd_young(*pmd)) {
@@ -82,10 +82,10 @@ void damon_pmdp_mkold(pmd_t *pmd, struct mm_struct *mm, unsigned long addr)
 #endif /* CONFIG_MMU_NOTIFIER */
 
 	if (referenced)
-		set_page_young(page);
+		folio_set_young(folio);
 
-	set_page_idle(page);
-	put_page(page);
+	folio_set_idle(folio);
+	folio_put(folio);
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 }