dm: move target request nr to dm_target_io

This patch moves target_request_nr from map_info to dm_target_io and
makes it accessible with dm_bio_get_target_request_nr.

This patch is a preparation for the next patch that removes map_info.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index e2f876539743..4e7ba82146c0 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -279,13 +279,13 @@ static int stripe_map(struct dm_target *ti, struct bio *bio,
         unsigned target_request_nr;
 
         if (bio->bi_rw & REQ_FLUSH) {
-                target_request_nr = map_context->target_request_nr;
+                target_request_nr = dm_bio_get_target_request_nr(bio);
                 BUG_ON(target_request_nr >= sc->stripes);
                 bio->bi_bdev = sc->stripe[target_request_nr].dev->bdev;
                 return DM_MAPIO_REMAPPED;
         }
         if (unlikely(bio->bi_rw & REQ_DISCARD)) {
-                target_request_nr = map_context->target_request_nr;
+                target_request_nr = dm_bio_get_target_request_nr(bio);
                 BUG_ON(target_request_nr >= sc->stripes);
                 return stripe_map_discard(sc, bio, target_request_nr);
         }