diff options
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 3b99c6a7a104..42a492096d3f 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -3187,6 +3187,11 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input, return PTR_ERR(bdev); disk = bdev->bd_disk; + if (!queue_is_mq(disk->queue)) { + ret = -EOPNOTSUPP; + goto err; + } + ioc = q_to_ioc(disk->queue); if (!ioc) { ret = blk_iocost_init(disk); @@ -3367,6 +3372,11 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input, return PTR_ERR(bdev); q = bdev_get_queue(bdev); + if (!queue_is_mq(q)) { + ret = -EOPNOTSUPP; + goto err; + } + ioc = q_to_ioc(q); if (!ioc) { ret = blk_iocost_init(bdev->bd_disk); |