libdm: ensure dm_stats_get_area_start includes region offset

The dm_stats_get_area_start (and its '_current_' variant) methods
are expected to return the start sector of the area in the
containing device.

Make sure the call adds region->start to the returned value.

1 files changed, 2 insertions, 1 deletions

diff --git a/libdm/libdm-stats.c b/libdm/libdm-stats.c
index ea4feefaa..51aba793e 100644
--- a/libdm/libdm-stats.c
+++ b/libdm/libdm-stats.c
@@ -1328,9 +1328,10 @@ uint64_t dm_stats_get_current_region_area_len(const struct dm_stats *dms,
 uint64_t dm_stats_get_area_start(const struct dm_stats *dms, uint64_t *start,
 				 uint64_t region_id, uint64_t area_id)
 {
+	struct dm_stats_region *region = &dms->regions[region_id];
 	if (!dms || !dms->regions)
 		return_0;
-	*start = dms->regions[region_id].step * area_id;
+	*start = region->start + region->step * area_id;
 	return 1;
 }