blk-iocost: fix queue stats accounting
The q->stats->accounting is not only used by iocost, but iocost only increase this counter, never decrease it. So queue stats accounting will always enabled after using iocost once. Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20230804070609.31623-1-chengming.zhou@linux.dev Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -3301,11 +3301,12 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input,
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if (qos[QOS_MIN] > qos[QOS_MAX])
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if (qos[QOS_MIN] > qos[QOS_MAX])
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goto einval;
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goto einval;
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if (enable) {
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if (enable && !ioc->enabled) {
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blk_stat_enable_accounting(disk->queue);
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blk_stat_enable_accounting(disk->queue);
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blk_queue_flag_set(QUEUE_FLAG_RQ_ALLOC_TIME, disk->queue);
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blk_queue_flag_set(QUEUE_FLAG_RQ_ALLOC_TIME, disk->queue);
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ioc->enabled = true;
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ioc->enabled = true;
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} else {
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} else if (!enable && ioc->enabled) {
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blk_stat_disable_accounting(disk->queue);
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blk_queue_flag_clear(QUEUE_FLAG_RQ_ALLOC_TIME, disk->queue);
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blk_queue_flag_clear(QUEUE_FLAG_RQ_ALLOC_TIME, disk->queue);
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ioc->enabled = false;
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ioc->enabled = false;
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}
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}
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