2 files changed, 11 insertions, 4 deletions

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 862f458d4760..32593dba4684 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -171,9 +171,12 @@ bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
 }
 EXPORT_SYMBOL(blk_mq_can_queue);
 
-static void blk_mq_rq_ctx_init(struct blk_mq_ctx *ctx, struct request *rq,
-                               unsigned int rw_flags)
+static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
+                               struct request *rq, unsigned int rw_flags)
 {
+        if (blk_queue_io_stat(q))
+                rw_flags |= REQ_IO_STAT;
+
         rq->mq_ctx = ctx;
         rq->cmd_flags = rw_flags;
         ctx->rq_dispatched[rw_is_sync(rw_flags)]++;
@@ -197,7 +200,7 @@ static struct request *blk_mq_alloc_request_pinned(struct request_queue *q,
 
                 rq = __blk_mq_alloc_request(hctx, gfp & ~__GFP_WAIT, reserved);
                 if (rq) {
-                        blk_mq_rq_ctx_init(ctx, rq, rw);
+                        blk_mq_rq_ctx_init(q, ctx, rq, rw);
                         break;
                 } else if (!(gfp & __GFP_WAIT))
                         break;
@@ -921,7 +924,7 @@ static void blk_mq_make_request(struct request_queue *q, struct bio *bio)
         trace_block_getrq(q, bio, rw);
         rq = __blk_mq_alloc_request(hctx, GFP_ATOMIC, false);
         if (likely(rq))
-                blk_mq_rq_ctx_init(ctx, rq, rw);
+                blk_mq_rq_ctx_init(q, ctx, rq, rw);
         else {
                 blk_mq_put_ctx(ctx);
                 trace_block_sleeprq(q, bio, rw);
@@ -1377,6 +1380,7 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_reg *reg,
         q->queue_hw_ctx = hctxs;
 
         q->mq_ops = reg->ops;
+        q->queue_flags |= QUEUE_FLAG_MQ_DEFAULT;
 
         blk_queue_make_request(q, blk_mq_make_request);
         blk_queue_rq_timed_out(q, reg->ops->timeout);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f26ec20f6354..1b135d49b279 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -505,6 +505,9 @@ struct request_queue {
                                  (1 << QUEUE_FLAG_SAME_COMP)    |       \
                                  (1 << QUEUE_FLAG_ADD_RANDOM))
 
+#define QUEUE_FLAG_MQ_DEFAULT   ((1 << QUEUE_FLAG_IO_STAT) |            \
+                                 (1 << QUEUE_FLAG_SAME_COMP))
+
 static inline void queue_lockdep_assert_held(struct request_queue *q)
 {
         if (q->queue_lock)