1 files changed, 1 insertions, 0 deletions

diff --git a/block/blk-merge.c b/block/blk-merge.c
index d3b84bbb776a..39f2e077a014 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -228,6 +228,7 @@ new_segment:
                             ((unsigned long)q->dma_drain_buffer) &
                             (PAGE_SIZE - 1));
                 nsegs++;
+                rq->data_len += q->dma_drain_size;
         }
 
         if (sg)