dm: use dm_target_offset macro

Use new dm_target_offset() macro to avoid most references to ti->begin
in dm targets.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 22d5e2fdab8b..779f47a0fe71 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -222,7 +222,7 @@ static int stripe_map(struct dm_target *ti, struct bio *bio,
                 return DM_MAPIO_REMAPPED;
         }
 
-        offset = bio->bi_sector - ti->begin;
+        offset = dm_target_offset(ti, bio->bi_sector);
         chunk = offset >> sc->chunk_shift;
         stripe = sector_div(chunk, sc->stripes);