- /* blk-mq request-based interface */
- *__clone = blk_get_request(bdev_get_queue(bdev),
- rq_data_dir(rq), GFP_ATOMIC);
+ /*
+ * blk-mq request-based interface; used by both:
+ * .request_fn stacked on blk-mq path(s) and
+ * blk-mq stacked on blk-mq path(s).
+ */
+ *__clone = blk_mq_alloc_request(bdev_get_queue(bdev),
+ rq_data_dir(rq), BLK_MQ_REQ_NOWAIT);