[RFC][ for -mm] memory controller enhancements for NUMA [1/10] record nid/zid on page_cgroup

[kamezawa.hiroyu at jp.fujitsu.com]

>> 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
>> @@ -131,6 +131,8 @@ struct page_cgroup {
>>  	atomic_t ref_cnt;		/* Helpful when pages move b/w  */
>>  					/* mapped and cached states     */
>>  	int	 flags;
>> +	short	nid;
>> +	short	zid;

>are they worth to be cached?
>can't you use page_zonenum(pc->page)?
>
Maybe I can. I'll drop this and see what the whole code looks like.

Thanks,
-Kame