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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Trond Myklebust <trond.myklebust@hammerspace.com>,
        Anna Schumaker <Anna.Schumaker@Netapp.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.10 329/452] NFS: fsync() should report filesystem errors over EINTR/ERESTARTSYS
Date:   Tue,  7 Jun 2022 19:03:06 +0200
Message-Id: <20220607164918.364902253@linuxfoundation.org>
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From: Trond Myklebust <trond.myklebust@hammerspace.com>

[ Upstream commit 9641d9bc9b75f11f70646f5c6ee9f5f519a1012e ]

If the commit to disk is interrupted, we should still first check for
filesystem errors so that we can report them in preference to the error
due to the signal.

Fixes: 2197e9b06c22 ("NFS: Fix up fsync() when the server rebooted")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/nfs/file.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 7b47f9b063f1..887faff3a73e 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -208,15 +208,16 @@ static int
 nfs_file_fsync_commit(struct file *file, int datasync)
 {
 	struct inode *inode = file_inode(file);
-	int ret;
+	int ret, ret2;
 
 	dprintk("NFS: fsync file(%pD2) datasync %d\n", file, datasync);
 
 	nfs_inc_stats(inode, NFSIOS_VFSFSYNC);
 	ret = nfs_commit_inode(inode, FLUSH_SYNC);
-	if (ret < 0)
-		return ret;
-	return file_check_and_advance_wb_err(file);
+	ret2 = file_check_and_advance_wb_err(file);
+	if (ret2 < 0)
+		return ret2;
+	return ret;
 }
 
 int
-- 
2.35.1