dm raid1: fix immutable biovec related BUG when retrying read bio
authorMikulas Patocka <mpatocka@redhat.com>
Tue, 18 Feb 2014 14:57:22 +0000 (09:57 -0500)
committerMike Snitzer <snitzer@redhat.com>
Tue, 18 Feb 2014 15:48:57 +0000 (10:48 -0500)
When restoring bi_end_io, increase bi_remaining before retrying the bio
to avoid BUG_ON(atomic_read(&bio->bi_remaining) <= 0) in bio_endio().

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-raid1.c

index f284e0b..7dfdb5c 100644 (file)
@@ -1244,6 +1244,9 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, int error)
 
                        dm_bio_restore(bd, bio);
                        bio_record->details.bi_bdev = NULL;
+
+                       atomic_inc(&bio->bi_remaining);
+
                        queue_bio(ms, bio, rw);
                        return DM_ENDIO_INCOMPLETE;
                }