block/rq_qos: implement rq_qos_ops->queue_depth_changed()

[linux-2.6-microblaze.git] / block / blk-rq-qos.h

diff --git a/block/blk-rq-qos.h b/block/blk-rq-qos.h
index 8e426a8..e15b690 100644 (file)
--- a/block/blk-rq-qos.h
+++ b/block/blk-rq-qos.h
@@ -41,6 +41,7 @@ struct rq_qos_ops {
        void (*done)(struct rq_qos *, struct request *);
        void (*done_bio)(struct rq_qos *, struct bio *);
        void (*cleanup)(struct rq_qos *, struct bio *);
+       void (*queue_depth_changed)(struct rq_qos *);
        void (*exit)(struct rq_qos *);
        const struct blk_mq_debugfs_attr *debugfs_attrs;
 };
@@ -138,6 +139,7 @@ void __rq_qos_throttle(struct rq_qos *rqos, struct bio *bio);
 void __rq_qos_track(struct rq_qos *rqos, struct request *rq, struct bio *bio);
 void __rq_qos_merge(struct rq_qos *rqos, struct request *rq, struct bio *bio);
 void __rq_qos_done_bio(struct rq_qos *rqos, struct bio *bio);
+void __rq_qos_queue_depth_changed(struct rq_qos *rqos);
 
 static inline void rq_qos_cleanup(struct request_queue *q, struct bio *bio)
 {
@@ -194,6 +196,12 @@ static inline void rq_qos_merge(struct request_queue *q, struct request *rq,
                __rq_qos_merge(q->rq_qos, rq, bio);
 }
 
+static inline void rq_qos_queue_depth_changed(struct request_queue *q)
+{
+       if (q->rq_qos)
+               __rq_qos_queue_depth_changed(q->rq_qos);
+}
+
 void rq_qos_exit(struct request_queue *);
 
 #endif