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Subject[PATCH -next] cifs: return the more nuanced writeback error on close()
Date
As filemap_check_errors() only report -EIO or -ENOSPC, we return more nuanced
writeback error -(file->f_mapping->wb_err & MAX_ERRNO).

filemap_write_and_wait
filemap_write_and_wait_range
filemap_check_errors
-ENOSPC or -EIO
filemap_check_wb_err
errseq_check
return -(file->f_mapping->wb_err & MAX_ERRNO)

Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
---
fs/cifs/file.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index d511a78383c3..559f59a047c2 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2777,8 +2777,11 @@ int cifs_flush(struct file *file, fl_owner_t id)
rc = filemap_write_and_wait(inode->i_mapping);

cifs_dbg(FYI, "Flush inode %p file %p rc %d\n", inode, file, rc);
- if (rc)
+ if (rc) {
+ /* get more nuanced writeback errors */
+ rc = filemap_check_wb_err(file->f_mapping, 0);
trace_cifs_flush_err(inode->i_ino, rc);
+ }
return rc;
}

--
2.31.1
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