[PATCH v4 01/10] mm/page_io: remove unneeded ClearPageUptodate()

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From: ZhangPeng <zhangpeng362@xxxxxxxxxx>

The VM_BUG_ON_FOLIO in swap_readpage() ensures that the page is already
!uptodate in __end_swap_bio_read() and sio_read_complete().
Just remove unneeded ClearPageUptodate().

Suggested-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: ZhangPeng <zhangpeng362@xxxxxxxxxx>
---
 mm/page_io.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/page_io.c b/mm/page_io.c
index 8741d3a0d48a..3087a69a014b 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -62,7 +62,6 @@ static void __end_swap_bio_read(struct bio *bio)
 
 	if (bio->bi_status) {
 		SetPageError(page);
-		ClearPageUptodate(page);
 		pr_alert_ratelimited("Read-error on swap-device (%u:%u:%llu)\n",
 				     MAJOR(bio_dev(bio)), MINOR(bio_dev(bio)),
 				     (unsigned long long)bio->bi_iter.bi_sector);
@@ -417,7 +416,6 @@ static void sio_read_complete(struct kiocb *iocb, long ret)
 			struct page *page = sio->bvec[p].bv_page;
 
 			SetPageError(page);
-			ClearPageUptodate(page);
 			unlock_page(page);
 		}
 		pr_alert_ratelimited("Read-error on swap-device\n");
-- 
2.25.1





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