1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 3a13fbe13e08..74469a4dc0a1 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -641,6 +641,9 @@ static inline bool blk_account_rq(struct request *rq)
 
 #define rq_data_dir(rq)         (op_is_write(req_op(rq)) ? WRITE : READ)
 
+#define rq_dma_dir(rq) \
+        (op_is_write(req_op(rq)) ? DMA_TO_DEVICE : DMA_FROM_DEVICE)
+
 static inline bool queue_is_mq(struct request_queue *q)
 {
         return q->mq_ops;