[PATCH 3/3] block: Specify the operation type when calling blk_mq_map_queue()

[Bart Van Assche <bvanassche@acm.org>]

Since the introduction of blk_mq_get_hctx_type() the operation type in
the second argument of blk_mq_get_hctx_type() matters. Make sure that
a hardware queue of type HCTX_TYPE_DEFAULT is selected instead of a
hardware queue of type HCTX_TYPE_READ.

Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 block/blk-mq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/blk-mq.c b/block/blk-mq.c
index e9bf950983c7..9b1518ef1aa1 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2168,7 +2168,7 @@ static struct blk_mq_hw_ctx *blk_mq_get_sq_hctx(struct request_queue *q)
 	 * just causes lock contention inside the scheduler and pointless cache
 	 * bouncing.
 	 */
-	struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, 0, ctx);
+	struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, REQ_OP_WRITE, ctx);
 
 	if (!blk_mq_hctx_stopped(hctx))
 		return hctx;