Re: [PATCH 1/1] mm/page_ref: introduce page_ref_inc_return

[Andrew Morton]

On Mon, 20 Jun 2016 12:38:13 +0200 Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote:

> From: David Hildenbrand <dahi@xxxxxxxxxxxxxxxxxx>
> 
> Let's introduce that helper.
> 
> ...
>
> +static inline int page_ref_inc_return(struct page *page)
> +{
> +	int ret = atomic_inc_return(&page->_refcount);
> +
> +	if (page_ref_tracepoint_active(__tracepoint_page_ref_mod_and_return))
> +		__page_ref_mod_and_return(page, 1, ret);
> +	return ret;
> +}

Acked-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>