mm: add link from struct lruvec to struct zone

[platform/upstream/kernel-adaptation-pc.git] / include / linux / mmzone.h

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 5c4880b..2427706 100644 (file)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -201,6 +201,9 @@ struct zone_reclaim_stat {
 struct lruvec {
        struct list_head lists[NR_LRU_LISTS];
        struct zone_reclaim_stat reclaim_stat;
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+       struct zone *zone;
+#endif
 };
 
 /* Mask used at gathering information at once (see memcontrol.c) */
@@ -729,6 +732,17 @@ extern int init_currently_empty_zone(struct zone *zone, unsigned long start_pfn,
                                     unsigned long size,
                                     enum memmap_context context);
 
+extern void lruvec_init(struct lruvec *lruvec, struct zone *zone);
+
+static inline struct zone *lruvec_zone(struct lruvec *lruvec)
+{
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+       return lruvec->zone;
+#else
+       return container_of(lruvec, struct zone, lruvec);
+#endif
+}
+
 #ifdef CONFIG_HAVE_MEMORY_PRESENT
 void memory_present(int nid, unsigned long start, unsigned long end);
 #else