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Message-ID: <20230721034451.16412-3-zhangpeng362@huawei.com>
Date: Fri, 21 Jul 2023 11:44:43 +0800
From: Peng Zhang <zhangpeng362@...wei.com>
To: <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
<willy@...radead.org>
CC: <hch@...radead.org>, <sidhartha.kumar@...cle.com>,
<akpm@...ux-foundation.org>, <wangkefeng.wang@...wei.com>,
<sunnanyong@...wei.com>, ZhangPeng <zhangpeng362@...wei.com>
Subject: [PATCH v4 02/10] mm/page_io: remove unneeded SetPageError()
From: ZhangPeng <zhangpeng362@...wei.com>
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.
Suggested-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Signed-off-by: ZhangPeng <zhangpeng362@...wei.com>
---
mm/page_io.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/mm/page_io.c b/mm/page_io.c
index 3087a69a014b..5ddb5d9c5013 100644
--- 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");
--
2.25.1
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