Re: [PATCH v6 3/5] cgroup/cpuset: make callback_lock raw

[Peter Zijlstra]

On Thu, Jan 17, 2019 at 09:47:37AM +0100, Juri Lelli wrote:
> @@ -2366,7 +2366,7 @@ static int cpuset_common_seq_show(struct seq_file *sf, void *v)
>  	cpuset_filetype_t type = seq_cft(sf)->private;
>  	int ret = 0;
>  
> -	spin_lock_irq(&callback_lock);
> +	raw_spin_lock_irq(&callback_lock);
>  
>  	switch (type) {
>  	case FILE_CPULIST:
> @@ -2388,7 +2388,7 @@ static int cpuset_common_seq_show(struct seq_file *sf, void *v)
>  		ret = -EINVAL;
>  	}
>  
> -	spin_unlock_irq(&callback_lock);
> +	raw_spin_unlock_irq(&callback_lock);
>  	return ret;
>  }
>  
could we not convert this to use cpuset_mutex ?