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-linear.c b/drivers/md/dm-linear.c
index f043b5f433b2..3921e3bb43c1 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -74,7 +74,7 @@ static sector_t linear_map_sector(struct dm_target *ti, sector_t bi_sector)
 {
         struct linear_c *lc = ti->private;
 
-        return lc->start + (bi_sector - ti->begin);
+        return lc->start + dm_target_offset(ti, bi_sector);
 }
 
 static void linear_map_bio(struct dm_target *ti, struct bio *bio)