The patch titled
Subject: mm/page_io: use a folio in swap_writepage_bdev_sync()
has been added to the -mm mm-unstable branch. Its filename is
mm-page_io-use-a-folio-in-swap_writepage_bdev_sync.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_io-use-a-folio-in-swap_writepage_bdev_sync.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: ZhangPeng <zhangpeng362@xxxxxxxxxx>
Subject: mm/page_io: use a folio in swap_writepage_bdev_sync()
Date: Fri, 21 Jul 2023 11:44:48 +0800
Saves one implicit call to compound_head().
Link: https://lkml.kernel.org/r/20230721034451.16412-8-zhangpeng362@xxxxxxxxxx
Signed-off-by: ZhangPeng <zhangpeng362@xxxxxxxxxx>
Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: Nanyong Sun <sunnanyong@xxxxxxxxxx>
Cc: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_io.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/mm/page_io.c~mm-page_io-use-a-folio-in-swap_writepage_bdev_sync
+++ a/mm/page_io.c
@@ -331,6 +331,7 @@ static void swap_writepage_bdev_sync(str
{
struct bio_vec bv;
struct bio bio;
+ struct folio *folio = page_folio(page);
bio_init(&bio, sis->bdev, &bv, 1,
REQ_OP_WRITE | REQ_SWAP | wbc_to_write_flags(wbc));
@@ -340,8 +341,8 @@ static void swap_writepage_bdev_sync(str
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_wait(&bio);
__end_swap_bio_write(&bio);
_
Patches currently in -mm which might be from zhangpeng362@xxxxxxxxxx are
mm-use-a-folio-in-fault_dirty_shared_page.patch
mm-remove-page_rmapping.patch
mm-page_io-remove-unneeded-clearpageuptodate.patch
mm-page_io-remove-unneeded-setpageerror.patch
mm-page_io-introduce-bio_first_folio_all.patch
mm-page_io-use-a-folio-in-__end_swap_bio_write.patch
mm-page_io-use-a-folio-in-__end_swap_bio_read.patch
mm-page_io-use-a-folio-in-sio_read_complete.patch
mm-page_io-use-a-folio-in-swap_writepage_bdev_sync.patch
mm-page_io-use-a-folio-in-swap_writepage_bdev_async.patch
mm-page_io-convert-count_swpout_vm_event-to-take-in-a-folio.patch
mm-page_io-convert-bio_associate_blkg_from_page-to-take-in-a-folio.patch
