mm/page_io: remove unneeded SetPageError()

Nobody checks the PageError()/folio_test_error() for the page/folio in
__end_swap_bio_read/write() and sio_write_complete(). Therefore, we
don't need to set the error flag. Just drop it.

Link: https://lkml.kernel.org/r/20230721034451.16412-3-zhangpeng362@huawei.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Suggested-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/page_io.c b/mm/page_io.c
index 4283aee..a34f2cd 100644 (file)
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -32,7 +32,6 @@ static void __end_swap_bio_write(struct bio *bio)
        struct page *page = bio_first_page_all(bio);
 
        if (bio->bi_status) {
-               SetPageError(page);
                /*
                 * We failed to write the page out to swap-space.
                 * Re-dirty the page in order to avoid it being reclaimed.
@@ -61,7 +60,6 @@ static void __end_swap_bio_read(struct bio *bio)
        struct page *page = bio_first_page_all(bio);
 
        if (bio->bi_status) {
-               SetPageError(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);
@@ -415,7 +413,6 @@ static void sio_read_complete(struct kiocb *iocb, long ret)
                for (p = 0; p < sio->pages; p++) {
                        struct page *page = sio->bvec[p].bv_page;
 
-                       SetPageError(page);
                        unlock_page(page);
                }
                pr_alert_ratelimited("Read-error on swap-device\n");