[PATCH v3 hmm 10/12] mm/hmm: Do not use list*_rcu() for hmm->ranges

[Christoph Hellwig]

On Thu, Jun 13, 2019 at 09:44:48PM -0300, Jason Gunthorpe wrote:
>  	range->hmm = hmm;
>  	kref_get(&hmm->kref);
> -	list_add_rcu(&range->list, &hmm->ranges);
> +	list_add(&range->list, &hmm->ranges);
>  
>  	/*
>  	 * If there are any concurrent notifiers we have to wait for them for
> @@ -934,7 +934,7 @@ void hmm_range_unregister(struct hmm_range *range)
>  	struct hmm *hmm = range->hmm;
>  
>  	mutex_lock(&hmm->lock);
> -	list_del_rcu(&range->list);
> +	list_del(&range->list);
>  	mutex_unlock(&hmm->lock);

Looks fine:

Signed-off-by: Christoph Hellwig <hch at lst.de>

Btw, is there any reason new ranges are added to the front and not the
tail of the list?