This patch adds nid/zoneid value to page cgroup.
This helps per-zone accounting for memory cgroup and reclaim routine.
Signed-off-by: KAMEZAWA Hiroyuki <[EMAIL PROTECTED]>
mm/memcontrol.c | 6 ++++++
1 file changed, 6 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
@@ -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;
};
#define PAGE_CGROUP_FLAG_CACHE (0x1) /* charged as cache */
#define PAGE_CGROUP_FLAG_ACTIVE (0x2) /* page is active in this cgroup */
@@ -216,6 +218,10 @@ void page_assign_page_cgroup(struct page
VM_BUG_ON(!page_cgroup_locked(page));
locked = (page->page_cgroup & PAGE_CGROUP_LOCK);
page->page_cgroup = ((unsigned long)pc | locked);
+ if (pc) {
+ pc->nid = page_to_nid(page);
+ pc->zid = page_zonenum(page);
+ }
}
struct page_cgroup *page_get_page_cgroup(struct page *page)
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