[RFC][PATCH] memory controller per zone patches take 2 [2/10] add nid/zid function for page_cgroup

[Balbir Singh]

KAMEZAWA Hiroyuki wrote:
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu at jp.fujitsu.com>
>  mm/memcontrol.c |   10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> Index: linux-2.6.24-rc2-mm1/mm/memcontrol.c
> ===================================================================
> --- linux-2.6.24-rc2-mm1.orig/mm/memcontrol.c
> +++ linux-2.6.24-rc2-mm1/mm/memcontrol.c
> @@ -135,6 +135,16 @@ struct page_cgroup {
>  #define PAGE_CGROUP_FLAG_CACHE	(0x1)	/* charged as cache */
>  #define PAGE_CGROUP_FLAG_ACTIVE (0x2)	/* page is active in this cgroup */
> 
> +static inline int page_cgroup_nid(struct page_cgroup *pc)
> +{
> +	return page_to_nid(pc->page);
> +}
> +
> +static inline int page_cgroup_zid(struct page_cgroup *pc)
> +{
> +	return page_zonenum(pc->page);

page_zonenum returns zone_type, isn't it better we carry the
type through to the caller?

> +}
> +
>  enum {
>  	MEM_CGROUP_TYPE_UNSPEC = 0,
>  	MEM_CGROUP_TYPE_MAPPED,
> 


-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL