Re: [PATCH v5 1/3] mm, list_lru: make memcg visible to lru walker isolation function

[Matthew Wilcox <willy@xxxxxxxxxxxxx>]

On Sun, Mar 15, 2020 at 05:53:40AM -0400, Yafang Shao wrote:
> +#define for_each_mem_cgroup_tree(iter, root)		\
> +	for (iter = mem_cgroup_iter(root, NULL, NULL);	\
> +	     iter != NULL;				\
> +	     iter = mem_cgroup_iter(root, iter, NULL))
[...]
> +#define for_each_mem_cgroup_tree(iter)		\
> +	for (iter = NULL; iter; )
> +

That's not the same signature ...