Drop 'size' argument from bio_endio and bi_end_io

As bi_end_io is only called once when the reqeust is complete,
the 'size' argument is now redundant.  Remove it.

Now there is no need for bio_endio to subtract the size completed
from bi_size.  So don't do that either.

While we are at it, change bi_end_io to return void.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 4 insertions, 9 deletions

diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 1e2af43a73b9..f2a63f394ad9 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -82,21 +82,17 @@ static void multipath_end_bh_io (struct multipath_bh *mp_bh, int err)
         struct bio *bio = mp_bh->master_bio;
         multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev);
 
-        bio_endio(bio, bio->bi_size, err);
+        bio_endio(bio, err);
         mempool_free(mp_bh, conf->pool);
 }
 
-static int multipath_end_request(struct bio *bio, unsigned int bytes_done,
-                                 int error)
+static void multipath_end_request(struct bio *bio, int error)
 {
         int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
         struct multipath_bh * mp_bh = (struct multipath_bh *)(bio->bi_private);
         multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev);
         mdk_rdev_t *rdev = conf->multipaths[mp_bh->path].rdev;
 
-        if (bio->bi_size)
-                return 1;
-
         if (uptodate)
                 multipath_end_bh_io(mp_bh, 0);
         else if (!bio_rw_ahead(bio)) {
@@ -112,7 +108,6 @@ static int multipath_end_request(struct bio *bio, unsigned int bytes_done,
         } else
                 multipath_end_bh_io(mp_bh, error);
         rdev_dec_pending(rdev, conf->mddev);
-        return 0;
 }
 
 static void unplug_slaves(mddev_t *mddev)
@@ -155,7 +150,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio)
         const int rw = bio_data_dir(bio);
 
         if (unlikely(bio_barrier(bio))) {
-                bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
+                bio_endio(bio, -EOPNOTSUPP);
                 return 0;
         }
 
@@ -169,7 +164,7 @@ static int multipath_make_request (struct request_queue *q, struct bio * bio)
 
         mp_bh->path = multipath_map(conf);
         if (mp_bh->path < 0) {
-                bio_endio(bio, bio->bi_size, -EIO);
+                bio_endio(bio, -EIO);
                 mempool_free(mp_bh, conf->pool);
                 return 0;
         }