1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 5a01c53dddeb..90319b14d5ee 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -1545,6 +1545,7 @@ int drbd_merge_bvec(struct request_queue *q, struct bvec_merge_data *bvm, struct
                 struct request_queue * const b =
                         device->ldev->backing_bdev->bd_disk->queue;
                 if (b->merge_bvec_fn) {
+                        bvm->bi_bdev = device->ldev->backing_bdev;
                         backing_limit = b->merge_bvec_fn(b, bvm, bvec);
                         limit = min(limit, backing_limit);
                 }