erofs: get rid of raw bi_end_io() usage

These BIOs are actually harmless in practice, as they are all pseudo
BIOs and do not use advanced features like chaining.  Using the BIO
interface is a more friendly and unified approach for both bdev and
and file-backed I/Os (compared to awkward bvec interfaces).

Let's use bio_endio() instead.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

Author: hsiangkao

fs/erofs/fileio.c

@@ -34,13 +34,13 @@ static void erofs_fileio_ki_complete(struct kiocb *iocb, long ret)
 	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) {
 			DBG_BUGON(folio_test_uptodate(fi.folio));
 			erofs_onlinefolio_end(fi.folio, ret, false);
 		}
 	}
+	bio_endio(&rq->bio);
 	bio_uninit(&rq->bio);
 	kfree(rq);
 }

fs/erofs/fscache.c

@@ -185,7 +185,7 @@ static void erofs_fscache_bio_endio(void *priv, ssize_t transferred_or_error)
 
 	if (IS_ERR_VALUE(transferred_or_error))
 		io->bio.bi_status = errno_to_blk_status(transferred_or_error);
-	io->bio.bi_end_io(&io->bio);
+	bio_endio(&io->bio);
 	BUILD_BUG_ON(offsetof(struct erofs_fscache_bio, io) != 0);
 	erofs_fscache_io_put(&io->io);
 }
@@ -216,7 +216,7 @@ void erofs_fscache_submit_bio(struct bio *bio)
 	if (!ret)
 		return;
 	bio->bi_status = errno_to_blk_status(ret);
-	bio->bi_end_io(bio);
+	bio_endio(bio);
 }
 
 static int erofs_fscache_meta_read_folio(struct file *data, struct folio *folio)