linux-ext4 - [PATCH 6.6 071/676] ext4: remove calls to to set/clear the folio error flag

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Message-ID: <20241206143656.132429280@linuxfoundation.org>
Date: Fri,  6 Dec 2024 15:28:10 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: stable@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	patches@...ts.linux.dev,
	Theodore Tso <tytso@....edu>,
	Andreas Dilger <adilger.kernel@...ger.ca>,
	linux-ext4@...r.kernel.org,
	"Matthew Wilcox (Oracle)" <willy@...radead.org>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.6 071/676] ext4: remove calls to to set/clear the folio error flag

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matthew Wilcox (Oracle) <willy@...radead.org>

[ Upstream commit ea4fd933ab4310822e244af28d22ff63785dea0e ]

Nobody checks this flag on ext4 folios, stop setting and clearing it.

Cc: Theodore Ts'o <tytso@....edu>
Cc: Andreas Dilger <adilger.kernel@...ger.ca>
Cc: linux-ext4@...r.kernel.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Link: https://lore.kernel.org/r/20240420025029.2166544-11-willy@infradead.org
Signed-off-by: Theodore Ts'o <tytso@....edu>
Stable-dep-of: 2f3d93e210b9 ("ext4: fix race in buffer_head read fault injection")
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/ext4/move_extent.c | 4 +---
 fs/ext4/page-io.c     | 3 ---
 fs/ext4/readpage.c    | 1 -
 3 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index 0bfd5ff103aa4..a3aa85795d4a1 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -200,10 +200,8 @@ mext_page_mkuptodate(struct folio *folio, unsigned from, unsigned to)
 			continue;
 		if (!buffer_mapped(bh)) {
 			err = ext4_get_block(inode, block, bh, 0);
-			if (err) {
-				folio_set_error(folio);
+			if (err)
 				return err;
-			}
 			if (!buffer_mapped(bh)) {
 				folio_zero_range(folio, block_start, blocksize);
 				set_buffer_uptodate(bh);
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index dfdd7e5cf0389..7ab4f5a9bf5b8 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -117,7 +117,6 @@ static void ext4_finish_bio(struct bio *bio)
 
 		if (bio->bi_status) {
 			int err = blk_status_to_errno(bio->bi_status);
-			folio_set_error(folio);
 			mapping_set_error(folio->mapping, err);
 		}
 		bh = head = folio_buffers(folio);
@@ -441,8 +440,6 @@ int ext4_bio_write_folio(struct ext4_io_submit *io, struct folio *folio,
 	BUG_ON(!folio_test_locked(folio));
 	BUG_ON(folio_test_writeback(folio));
 
-	folio_clear_error(folio);
-
 	/*
 	 * Comments copied from block_write_full_page:
 	 *
diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c
index 3e7d160f543f0..8cb83e7b699bd 100644
--- a/fs/ext4/readpage.c
+++ b/fs/ext4/readpage.c
@@ -296,7 +296,6 @@ int ext4_mpage_readpages(struct inode *inode,
 
 				if (ext4_map_blocks(NULL, inode, &map, 0) < 0) {
 				set_error_page:
-					folio_set_error(folio);
 					folio_zero_segment(folio, 0,
 							  folio_size(folio));
 					folio_unlock(folio);
-- 
2.43.0