[RFC PATCHv4 1/6] block: expose blk_stat_{enable,disable}_accounting() to drivers

[Nilay Shroff]

The functions blk_stat_enable_accounting() and
blk_stat_disable_accounting() are currently exported, but their
prototypes are only defined in a private header. Move these prototypes
into a common header so that block drivers can directly use these APIs.

Reviewed-by: Hannes Reinecke <hare at suse.de>
Signed-off-by: Nilay Shroff <nilay at linux.ibm.com>
---
 block/blk-stat.h       | 4 ----
 include/linux/blk-mq.h | 4 ++++
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/block/blk-stat.h b/block/blk-stat.h
index 9e05bf18d1be..f5d95dd8c0e9 100644
--- a/block/blk-stat.h
+++ b/block/blk-stat.h
@@ -67,10 +67,6 @@ void blk_free_queue_stats(struct blk_queue_stats *);
 
 void blk_stat_add(struct request *rq, u64 now);
 
-/* record time/size info in request but not add a callback */
-void blk_stat_enable_accounting(struct request_queue *q);
-void blk_stat_disable_accounting(struct request_queue *q);
-
 /**
  * blk_stat_alloc_callback() - Allocate a block statistics callback.
  * @timer_fn: Timer callback function.
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index b25d12545f46..f647444643b8 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -735,6 +735,10 @@ int blk_rq_poll(struct request *rq, struct io_comp_batch *iob,
 
 bool blk_mq_queue_inflight(struct request_queue *q);
 
+/* record time/size info in request but not add a callback */
+void blk_stat_enable_accounting(struct request_queue *q);
+void blk_stat_disable_accounting(struct request_queue *q);
+
 enum {
 	/* return when out of requests */
 	BLK_MQ_REQ_NOWAIT	= (__force blk_mq_req_flags_t)(1 << 0),
-- 
2.51.0