blk-mq: improve DM's blk-mq IO merging via blk_insert_cloned_request feedback

[mirror_ubuntu-bionic-kernel.git] / block / blk-mq.h

diff --git a/block/blk-mq.h b/block/blk-mq.h
index 7c528c07fe07a379b4d04f5a77a5dca20239c7e6..0daa9f2c3d61b641dbeec6dd02b3356d8fe0c2ac 100644 (file)
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -60,6 +60,9 @@ void blk_mq_request_bypass_insert(struct request *rq, bool run_queue);
 void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
                                struct list_head *list);
 
+/* Used by blk_insert_cloned_request() to issue request directly */
+blk_status_t blk_mq_request_direct_issue(struct request *rq);
+
 /*
  * CPU -> queue mappings
  */