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-rw-r--r--include/linux/blkdev.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index c5393766909d..286b2a264383 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1059,6 +1059,20 @@ static inline unsigned int blk_rq_count_bios(struct request *rq)
}
/*
+ * blk_rq_set_prio - associate a request with prio from ioc
+ * @rq: request of interest
+ * @ioc: target iocontext
+ *
+ * Assocate request prio with ioc prio so request based drivers
+ * can leverage priority information.
+ */
+static inline void blk_rq_set_prio(struct request *rq, struct io_context *ioc)
+{
+ if (ioc)
+ rq->ioprio = ioc->ioprio;
+}
+
+/*
* Request issue related functions.
*/
extern struct request *blk_peek_request(struct request_queue *q);
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