Re: [PATCH 10/11] Introduce single user mode

[Andi Kleen]

stefani@xxxxxxxxxxx writes:
>  	}
>  
> +	if (dev->in_use) {
> +		retval = -EBUSY;
> +		goto exit;
> +	}

This plus setting the flag has to be inside the mutex, otherwise you
have an obvious race.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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