mm: add link from struct lruvec to struct zone
This is the first stage of struct mem_cgroup_zone removal. Further
patches replace struct mem_cgroup_zone with a pointer to struct lruvec.
If CONFIG_CGROUP_MEM_RES_CTLR=n lruvec_zone() is just container_of().
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index a8abf91..39b2c14 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4738,7 +4738,6 @@
{
struct mem_cgroup_per_node *pn;
struct mem_cgroup_per_zone *mz;
- enum lru_list lru;
int zone, tmp = node;
/*
* This routine is called against possible nodes.
@@ -4756,8 +4755,7 @@
for (zone = 0; zone < MAX_NR_ZONES; zone++) {
mz = &pn->zoneinfo[zone];
- for_each_lru(lru)
- INIT_LIST_HEAD(&mz->lruvec.lists[lru]);
+ lruvec_init(&mz->lruvec, &NODE_DATA(node)->node_zones[zone]);
mz->usage_in_excess = 0;
mz->on_tree = false;
mz->memcg = memcg;