linux-kernel - [PATCH] ovl: don't set the superblock's errseq

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Message-Id: <20240729034324.366148-1-haifeng.xu@shopee.com>
Date: Mon, 29 Jul 2024 11:43:24 +0800
From: Haifeng Xu <haifeng.xu@...pee.com>
To: miklos@...redi.hu,
	amir73il@...il.com
Cc: linux-unionfs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Haifeng Xu <haifeng.xu@...pee.com>
Subject: [PATCH] ovl: don't set the superblock's errseq_t manually

Since commit 5679897eb104 ("vfs: make sync_filesystem return errors from
->sync_fs"), the return value from sync_fs callback can be seen in
sync_filesystem(). Thus the errseq_set opreation can be removed here.

Signed-off-by: Haifeng Xu <haifeng.xu@...pee.com>
---
 fs/overlayfs/super.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 06a231970cb5..fe511192f83c 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -202,15 +202,9 @@ static int ovl_sync_fs(struct super_block *sb, int wait)
 	int ret;
 
 	ret = ovl_sync_status(ofs);
-	/*
-	 * We have to always set the err, because the return value isn't
-	 * checked in syncfs, and instead indirectly return an error via
-	 * the sb's writeback errseq, which VFS inspects after this call.
-	 */
-	if (ret < 0) {
-		errseq_set(&sb->s_wb_err, -EIO);
+
+	if (ret < 0)
 		return -EIO;
-	}
 
 	if (!ret)
 		return ret;
-- 
2.25.1