blk-mq: have blk_mq_dispatch_rq_list() return if we queued IO or not

Currently we're almost there, but if we dispatch nothing, then we
still return success.

Signed-off-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>

diff --git a/block/blk-mq.c b/block/blk-mq.c
index ade89197a4f1be88775a8d4ada9d8993568c92ec..6baa0c9fc06dce7fa1e79821d6278e78d8e32742 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1005,7 +1005,7 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list)
                        blk_mq_run_hw_queue(hctx, true);
        }
 
-       return ret != BLK_MQ_RQ_QUEUE_BUSY;
+       return queued != 0;
 }
 
 static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx)