diff options
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 6d36a4bd4382..5acc5f13bbd6 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -3187,6 +3187,9 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input, ioc = q_to_ioc(disk->queue); } + blk_mq_freeze_queue(disk->queue); + blk_mq_quiesce_queue(disk->queue); + spin_lock_irq(&ioc->lock); memcpy(qos, ioc->params.qos, sizeof(qos)); enable = ioc->enabled; @@ -3278,10 +3281,17 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input, ioc_refresh_params(ioc, true); spin_unlock_irq(&ioc->lock); + blk_mq_unquiesce_queue(disk->queue); + blk_mq_unfreeze_queue(disk->queue); + blkdev_put_no_open(bdev); return nbytes; einval: spin_unlock_irq(&ioc->lock); + + blk_mq_unquiesce_queue(disk->queue); + blk_mq_unfreeze_queue(disk->queue); + ret = -EINVAL; err: blkdev_put_no_open(bdev); @@ -3336,6 +3346,7 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input, size_t nbytes, loff_t off) { struct block_device *bdev; + struct request_queue *q; struct ioc *ioc; u64 u[NR_I_LCOEFS]; bool user; @@ -3346,14 +3357,18 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input, if (IS_ERR(bdev)) return PTR_ERR(bdev); - ioc = q_to_ioc(bdev_get_queue(bdev)); + q = bdev_get_queue(bdev); + ioc = q_to_ioc(q); if (!ioc) { ret = blk_iocost_init(bdev->bd_disk); if (ret) goto err; - ioc = q_to_ioc(bdev_get_queue(bdev)); + ioc = q_to_ioc(q); } + blk_mq_freeze_queue(q); + blk_mq_quiesce_queue(q); + spin_lock_irq(&ioc->lock); memcpy(u, ioc->params.i_lcoefs, sizeof(u)); user = ioc->user_cost_model; @@ -3402,11 +3417,18 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input, ioc_refresh_params(ioc, true); spin_unlock_irq(&ioc->lock); + blk_mq_unquiesce_queue(q); + blk_mq_unfreeze_queue(q); + blkdev_put_no_open(bdev); return nbytes; einval: spin_unlock_irq(&ioc->lock); + + blk_mq_unquiesce_queue(q); + blk_mq_unfreeze_queue(q); + ret = -EINVAL; err: blkdev_put_no_open(bdev); |