From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Date: Mon, 7 Jun 2021 12:14:34 -0400 Subject: [Cluster-devel] [PATCH AUTOSEL 4.19 07/21] gfs2: Prevent direct-I/O write fallback errors from getting lost In-Reply-To: <20210607161448.3584332-1-sashal@kernel.org> References: <20210607161448.3584332-1-sashal@kernel.org> Message-ID: <20210607161448.3584332-7-sashal@kernel.org> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Andreas Gruenbacher [ Upstream commit 43a511c44e58e357a687d61a20cf5ef1dc9e5a7c ] When a direct I/O write falls entirely and falls back to buffered I/O and the buffered I/O fails, the write failed with return value 0 instead of the error number reported by the buffered I/O. Fix that. Signed-off-by: Andreas Gruenbacher Signed-off-by: Sasha Levin --- fs/gfs2/file.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 143e7d518c5d..7c69486d556f 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -822,8 +822,11 @@ static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from) current->backing_dev_info = inode_to_bdi(inode); buffered = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops); current->backing_dev_info = NULL; - if (unlikely(buffered <= 0)) + if (unlikely(buffered <= 0)) { + if (!ret) + ret = buffered; goto out_unlock; + } /* * We need to ensure that the page cache pages are written to -- 2.30.2