linux-kernel - [PATCH 03/16] blk-mq: provide dummy blk_mq_map_queue

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Date:   Tue, 30 Oct 2018 12:32:39 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     linux-block@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 03/16] blk-mq: provide dummy blk_mq_map_queue_type() helper

Doesn't do anything right now, but it's needed as a prep patch
to get the interfaces right.

While in there, correct the blk_mq_map_queue() CPU type to an unsigned
int.

Reviewed-by: Hannes Reinecke <hare@...e.com>
Signed-off-by: Jens Axboe <axboe@...nel.dk>
---
 block/blk-mq.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/block/blk-mq.h b/block/blk-mq.h
index 889f0069dd80..d9facfb9ca51 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -73,13 +73,20 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
 extern int blk_mq_hw_queue_to_node(struct blk_mq_queue_map *qmap, unsigned int);
 
 static inline struct blk_mq_hw_ctx *blk_mq_map_queue(struct request_queue *q,
-		int cpu)
+						     unsigned int cpu)
 {
 	struct blk_mq_tag_set *set = q->tag_set;
 
 	return q->queue_hw_ctx[set->map[0].mq_map[cpu]];
 }
 
+static inline struct blk_mq_hw_ctx *blk_mq_map_queue_type(struct request_queue *q,
+							  unsigned int hctx_type,
+							  unsigned int cpu)
+{
+	return blk_mq_map_queue(q, cpu);
+}
+
 /*
  * sysfs helpers
  */
-- 
2.17.1