diff options
Diffstat (limited to 'block/blk-wbt.c')
| -rw-r--r-- | block/blk-wbt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c index 9ec2a2f1eda3..7a87506ff8e1 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -944,7 +944,9 @@ int wbt_init(struct gendisk *disk) /* * Assign rwb and add the stats callback. */ + mutex_lock(&q->rq_qos_mutex); ret = rq_qos_add(&rwb->rqos, disk, RQ_QOS_WBT, &wbt_rqos_ops); + mutex_unlock(&q->rq_qos_mutex); if (ret) goto err_free; |