[v3,08/10] mm/page_io: use a folio in swap_writepage_bdev_async()

Commit Message

Peng Zhang July 20, 2023, 1:01 p.m. UTC

From: ZhangPeng <[e-mail]>

Saves one implicit call to compound_head().

Signed-off-by: ZhangPeng <[e-mail]>
Reviewed-by: Matthew Wilcox (Oracle) <[e-mail]>
---
 mm/page_io.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Patch

diff --git a/mm/page_io.c b/mm/page_io.c
index 9df2a85e31b1..07bad3a4b701 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -352,6 +352,7 @@  static void swap_writepage_bdev_async(struct page *page,
 		struct writeback_control *wbc, struct swap_info_struct *sis)
 {
 	struct bio *bio;
+	struct folio *folio = page_folio(page);
 
 	bio = bio_alloc(sis->bdev, 1,
 			REQ_OP_WRITE | REQ_SWAP | wbc_to_write_flags(wbc),
@@ -362,8 +363,8 @@  static void swap_writepage_bdev_async(struct page *page,
 
 	bio_associate_blkg_from_page(bio, page);
 	count_swpout_vm_event(page);
-	set_page_writeback(page);
-	unlock_page(page);
+	folio_start_writeback(folio);
+	folio_unlock(folio);
 	submit_bio(bio);
 }