[PATCH v2 13/26] vmscan: Convert the activate_locked portion of shrink_page_list to folios

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

This accounts the number of pages activated correctly for large folios.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/vmscan.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9ac2583ca5e5..85c9758f6f32 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1927,15 +1927,16 @@ static unsigned int shrink_page_list(struct list_head *page_list,
 		}
 activate_locked:
 		/* Not a candidate for swapping, so reclaim swap space. */
-		if (PageSwapCache(page) && (mem_cgroup_swap_full(page) ||
-						PageMlocked(page)))
-			try_to_free_swap(page);
-		VM_BUG_ON_PAGE(PageActive(page), page);
-		if (!PageMlocked(page)) {
-			int type = page_is_file_lru(page);
-			SetPageActive(page);
+		if (folio_test_swapcache(folio) &&
+		    (mem_cgroup_swap_full(&folio->page) ||
+		     folio_test_mlocked(folio)))
+			try_to_free_swap(&folio->page);
+		VM_BUG_ON_FOLIO(folio_test_active(folio), folio);
+		if (!folio_test_mlocked(folio)) {
+			int type = folio_is_file_lru(folio);
+			folio_set_active(folio);
 			stat->nr_activate[type] += nr_pages;
-			count_memcg_page_event(page, PGACTIVATE);
+			count_memcg_folio_events(folio, PGACTIVATE, nr_pages);
 		}
 keep_locked:
 		unlock_page(page);
-- 
2.34.1