per-zone and reclaim enhancements for memory controller: nid/zid help…

…er function for cgroup Add macro to get node_id and zone_id of page_cgroup. Will be used in per-zone-xxx patches and others. Signed-off-by: KAMEZAWA Hiroyuki <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Balbir Singh <[email protected]> Cc: David Rientjes <[email protected]> Cc: Herbert Poetzl <[email protected]> Cc: Kirill Korotaev <[email protected]> Cc: Nick Piggin <[email protected]> Cc: Paul Menage <[email protected]> Cc: Pavel Emelianov <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Vaidyanathan Srinivasan <[email protected]> Cc: Rik van Riel <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
ambv · Feb 7, 2008 · c014953 · c014953
1 parent 91a4547
commit c014953
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/mm/memcontrol.c b/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 enum zone_type page_cgroup_zid(struct page_cgroup *pc)
+{
+	return page_zonenum(pc->page);
+}
+
 enum {
 	MEM_CGROUP_TYPE_UNSPEC = 0,
 	MEM_CGROUP_TYPE_MAPPED,