[PATCH v2 1/2] erofs: set error to bio if file-backed IO fails

[Sheng Yong]

From: Sheng Yong <shengyo...@xiaomi.com>

If a file-backed IO fails before submitting the bio to the lower
filesystem, an error is returned, but the bio->bi_status is not
marked as an error. However, the error information should be passed
to the end_io handler. Otherwise, the IO request will be treated as
successful.

Signed-off-by: Sheng Yong <shengyo...@xiaomi.com>
---
 fs/erofs/fileio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/erofs/fileio.c b/fs/erofs/fileio.c
index bec4b56b3826..4fa0a0121288 100644
--- a/fs/erofs/fileio.c
+++ b/fs/erofs/fileio.c
@@ -32,6 +32,8 @@ static void erofs_fileio_ki_complete(struct kiocb *iocb, long 
ret)
                ret = 0;
        }
        if (rq->bio.bi_end_io) {
+               if (ret < 0 && !rq->bio.bi_status)
+                       rq->bio.bi_status = errno_to_blk_status(ret);
                rq->bio.bi_end_io(&rq->bio);
        } else {
                bio_for_each_folio_all(fi, &rq->bio) {
-- 
2.43.0