RE: [PATCH rc v4] iommufd/fault: Use a separate spinlock to protect fault->deliver list

[Tian, Kevin]

> From: Nicolin Chen <nicolinc@xxxxxxxxxx>
> Sent: Saturday, January 18, 2025 3:29 AM
> 
> 
> Lastly, move the mutex closer to the response in the fault structure,
> and update its kdoc accordingly.

Then this comment is stale.

> 
> -	/* The lists of outstanding faults protected by below mutex. */
> -	struct mutex mutex;
> +	spinlock_t lock; /* protects the deliver list */
>  	struct list_head deliver;
> +	struct mutex mutex; /* serializes response flows */
>  	struct xarray response;
> 

And the comment for the mutex should be restored.