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-rw-r--r--block/blk-mq.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 07851753a049..e8b5f74dc1a1 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1781,6 +1781,9 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set)
if (!q)
goto err_hctxs;
+ if (percpu_counter_init(&q->mq_usage_counter, 0))
+ goto err_map;
+
q->mq_map = blk_mq_make_queue_map(set);
if (!q->mq_map)
goto err_map;
@@ -1867,6 +1870,8 @@ void blk_mq_free_queue(struct request_queue *q)
blk_mq_exit_hw_queues(q, set, set->nr_hw_queues);
blk_mq_free_hw_queues(q, set);
+ percpu_counter_destroy(&q->mq_usage_counter);
+
free_percpu(q->queue_ctx);
kfree(q->queue_hw_ctx);
kfree(q->mq_map);