mm/vmscan: kill struct mem_cgroup_zone
Kill struct mem_cgroup_zone and rename shrink_mem_cgroup_zone() to
shrink_lruvec(), it always shrinks one lruvec which it takes as an
argument.
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/vmscan.c b/mm/vmscan.c
index 1d251b5..4c5453f 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -94,11 +94,6 @@
nodemask_t *nodemask;
};
-struct mem_cgroup_zone {
- struct mem_cgroup *mem_cgroup;
- struct zone *zone;
-};
-
#define lru_to_page(_head) (list_entry((_head)->prev, struct page, lru))
#ifdef ARCH_HAS_PREFETCH
@@ -1769,8 +1764,7 @@
/*
* This is a basic per-zone page freer. Used by both kswapd and direct reclaim.
*/
-static void shrink_mem_cgroup_zone(struct mem_cgroup_zone *mz,
- struct scan_control *sc)
+static void shrink_lruvec(struct lruvec *lruvec, struct scan_control *sc)
{
unsigned long nr[NR_LRU_LISTS];
unsigned long nr_to_scan;
@@ -1778,9 +1772,6 @@
unsigned long nr_reclaimed, nr_scanned;
unsigned long nr_to_reclaim = sc->nr_to_reclaim;
struct blk_plug plug;
- struct lruvec *lruvec;
-
- lruvec = mem_cgroup_zone_lruvec(mz->zone, mz->mem_cgroup);
restart:
nr_reclaimed = 0;
@@ -1842,12 +1833,10 @@
memcg = mem_cgroup_iter(root, NULL, &reclaim);
do {
- struct mem_cgroup_zone mz = {
- .mem_cgroup = memcg,
- .zone = zone,
- };
+ struct lruvec *lruvec = mem_cgroup_zone_lruvec(zone, memcg);
- shrink_mem_cgroup_zone(&mz, sc);
+ shrink_lruvec(lruvec, sc);
+
/*
* Limit reclaim has historically picked one memcg and
* scanned it with decreasing priority levels until
@@ -2172,10 +2161,7 @@
.priority = 0,
.target_mem_cgroup = memcg,
};
- struct mem_cgroup_zone mz = {
- .mem_cgroup = memcg,
- .zone = zone,
- };
+ struct lruvec *lruvec = mem_cgroup_zone_lruvec(zone, memcg);
sc.gfp_mask = (gfp_mask & GFP_RECLAIM_MASK) |
(GFP_HIGHUSER_MOVABLE & ~GFP_RECLAIM_MASK);
@@ -2191,7 +2177,7 @@
* will pick up pages from other mem cgroup's as well. We hack
* the priority and make it zero.
*/
- shrink_mem_cgroup_zone(&mz, &sc);
+ shrink_lruvec(lruvec, &sc);
trace_mm_vmscan_memcg_softlimit_reclaim_end(sc.nr_reclaimed);