Re: [PATCH 3/5] fs, xfs: convert xlog_ticket.t_ref from atomic_t to refcount_t

[Christoph Hellwig]

> -	ASSERT(atomic_read(&ticket->t_ref) > 0);
> -	atomic_inc(&ticket->t_ref);
> +	ASSERT(refcount_read(&ticket->t_ref) > 0);
> +	refcount_inc(&ticket->t_ref);

With strict refcount semantics refcount_inc should check that
the count is larger than 0, otherwise we'd need to use 
recount_inc_not_zero or whatever you're going to call it.

Is that something the recount code does / could do?