[PATCH v3 3/3] mpage: use folios in bio end_io handler

[Pankaj Raghav <p.raghav@samsung.com>]

Use folios in the bio end_io handler. This conversion does the appropriate
handling on the folios in the respective end_io callback and removes the
call to page_endio(), which is soon to be removed.

Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 fs/mpage.c | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/fs/mpage.c b/fs/mpage.c
index d9540c1b7427..242e213ee064 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -45,24 +45,32 @@
  */
 static void mpage_read_end_io(struct bio *bio)
 {
-	struct bio_vec *bv;
-	struct bvec_iter_all iter_all;
+	struct folio_iter fi;
+	int err = blk_status_to_errno(bio->bi_status);
 
-	bio_for_each_segment_all(bv, bio, iter_all)
-		page_endio(bv->bv_page, REQ_OP_READ,
-			   blk_status_to_errno(bio->bi_status));
+	bio_for_each_folio_all(fi, bio) {
+		if (err)
+			folio_set_error(fi.folio);
+		else
+			folio_mark_uptodate(fi.folio);
+		folio_unlock(fi.folio);
+	}
 
 	bio_put(bio);
 }
 
 static void mpage_write_end_io(struct bio *bio)
 {
-	struct bio_vec *bv;
-	struct bvec_iter_all iter_all;
+	struct folio_iter fi;
+	int err = blk_status_to_errno(bio->bi_status);
 
-	bio_for_each_segment_all(bv, bio, iter_all)
-		page_endio(bv->bv_page, REQ_OP_WRITE,
-			   blk_status_to_errno(bio->bi_status));
+	bio_for_each_folio_all(fi, bio) {
+		if (err) {
+			folio_set_error(fi.folio);
+			mapping_set_error(fi.folio->mapping, err);
+		}
+		folio_end_writeback(fi.folio);
+	}
 
 	bio_put(bio);
 }
-- 
2.34.1