mm/page_io: use a folio in __end_swap_bio_write()

Saves two implicit call to compound_head().

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: ZhangPeng <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Kefeng Wang <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Nanyong Sun <[email protected]>
Cc: Sidhartha Kumar <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: ZhangPeng

mm/page_io.c

@@ -29,7 +29,7 @@
 
 static void __end_swap_bio_write(struct bio *bio)
 {
-	struct page *page = bio_first_page_all(bio);
+	struct folio *folio = bio_first_folio_all(bio);
 
 	if (bio->bi_status) {
 		/*
@@ -40,13 +40,13 @@ static void __end_swap_bio_write(struct bio *bio)
 		 *
 		 * Also clear PG_reclaim to avoid folio_rotate_reclaimable()
 		 */
-		set_page_dirty(page);
+		folio_mark_dirty(folio);
 		pr_alert_ratelimited("Write-error on swap-device (%u:%u:%llu)\n",
 				     MAJOR(bio_dev(bio)), MINOR(bio_dev(bio)),
 				     (unsigned long long)bio->bi_iter.bi_sector);
-		ClearPageReclaim(page);
+		folio_clear_reclaim(folio);
 	}
-	end_page_writeback(page);
+	folio_end_writeback(folio);
 }
 
 static void end_swap_bio_write(struct bio *bio)