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Date: Thu, 26 Apr 2012 11:54:15 +0400
From: Konstantin Khlebnikov <khlebnikov@...nvz.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 07/12] mm/vmscan: replace zone_nr_lru_pages() with
get_lruvec_size()
If memory cgroup enabled we always use lruvecs which are embedded into
struct mem_cgroup_per_zone, so we can reach lru_size counters via container_of().
Signed-off-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>
---
include/linux/memcontrol.h | 6 ++----
mm/memcontrol.c | 9 +++++++++
mm/vmscan.c | 31 ++++++++++++++++---------------
3 files changed, 27 insertions(+), 19 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 76f9d9b..7980187 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -122,8 +122,7 @@ int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg,
int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg,
struct zone *zone);
int mem_cgroup_select_victim_node(struct mem_cgroup *memcg);
-unsigned long mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg,
- int nid, int zid, unsigned int lrumask);
+unsigned long mem_cgroup_get_lruvec_size(struct lruvec *lruvec, enum lru_list);
struct zone_reclaim_stat*
mem_cgroup_get_reclaim_stat_from_page(struct page *page);
extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
@@ -342,8 +341,7 @@ mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg, struct zone *zone)
}
static inline unsigned long
-mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg, int nid, int zid,
- unsigned int lru_mask)
+mem_cgroup_get_lruvec_size(struct lruvec *lruvec, enum lru_list lru)
{
return 0;
}
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 66c2f80..2cb6f4d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -723,6 +723,15 @@ static void mem_cgroup_charge_statistics(struct mem_cgroup *memcg,
}
unsigned long
+mem_cgroup_get_lruvec_size(struct lruvec *lruvec, enum lru_list lru)
+{
+ struct mem_cgroup_per_zone *mz;
+
+ mz = container_of(lruvec, struct mem_cgroup_per_zone, lruvec);
+ return mz->lru_size[lru];
+}
+
+static unsigned long
mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg, int nid, int zid,
unsigned int lru_mask)
{
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 31df071..6d46117 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -155,19 +155,14 @@ static struct zone_reclaim_stat *get_reclaim_stat(struct mem_cgroup_zone *mz)
return &mem_cgroup_zone_lruvec(mz->zone, mz->mem_cgroup)->reclaim_stat;
}
-static unsigned long zone_nr_lru_pages(struct mem_cgroup_zone *mz,
- enum lru_list lru)
+static unsigned long get_lruvec_size(struct lruvec *lruvec, enum lru_list lru)
{
if (!mem_cgroup_disabled())
- return mem_cgroup_zone_nr_lru_pages(mz->mem_cgroup,
- zone_to_nid(mz->zone),
- zone_idx(mz->zone),
- BIT(lru));
+ return mem_cgroup_get_lruvec_size(lruvec, lru);
- return zone_page_state(mz->zone, NR_LRU_BASE + lru);
+ return zone_page_state(lruvec_zone(lruvec), NR_LRU_BASE + lru);
}
-
/*
* Add a shrinker callback to be called from the vm
*/
@@ -1645,6 +1640,9 @@ static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,
enum lru_list lru;
int noswap = 0;
bool force_scan = false;
+ struct lruvec *lruvec;
+
+ lruvec = mem_cgroup_zone_lruvec(mz->zone, mz->mem_cgroup);
/*
* If the zone or memcg is small, nr[l] can be 0. This
@@ -1670,10 +1668,10 @@ static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,
goto out;
}
- anon = zone_nr_lru_pages(mz, LRU_ACTIVE_ANON) +
- zone_nr_lru_pages(mz, LRU_INACTIVE_ANON);
- file = zone_nr_lru_pages(mz, LRU_ACTIVE_FILE) +
- zone_nr_lru_pages(mz, LRU_INACTIVE_FILE);
+ anon = get_lruvec_size(lruvec, LRU_ACTIVE_ANON) +
+ get_lruvec_size(lruvec, LRU_INACTIVE_ANON);
+ file = get_lruvec_size(lruvec, LRU_ACTIVE_FILE) +
+ get_lruvec_size(lruvec, LRU_INACTIVE_FILE);
if (global_reclaim(sc)) {
free = zone_page_state(mz->zone, NR_FREE_PAGES);
@@ -1736,7 +1734,7 @@ out:
int file = is_file_lru(lru);
unsigned long scan;
- scan = zone_nr_lru_pages(mz, lru);
+ scan = get_lruvec_size(lruvec, lru);
if (sc->priority || noswap) {
scan >>= sc->priority;
if (!scan && force_scan)
@@ -1772,6 +1770,7 @@ static inline bool should_continue_reclaim(struct mem_cgroup_zone *mz,
{
unsigned long pages_for_compaction;
unsigned long inactive_lru_pages;
+ struct lruvec *lruvec;
/* If not in reclaim/compaction mode, stop */
if (!in_reclaim_compaction(sc))
@@ -1804,10 +1803,12 @@ static inline bool should_continue_reclaim(struct mem_cgroup_zone *mz,
* If we have not reclaimed enough pages for compaction and the
* inactive lists are large enough, continue reclaiming
*/
+ lruvec = mem_cgroup_zone_lruvec(mz->zone, mz->mem_cgroup);
pages_for_compaction = (2UL << sc->order);
- inactive_lru_pages = zone_nr_lru_pages(mz, LRU_INACTIVE_FILE);
+ inactive_lru_pages = get_lruvec_size(lruvec, LRU_INACTIVE_FILE);
if (nr_swap_pages > 0)
- inactive_lru_pages += zone_nr_lru_pages(mz, LRU_INACTIVE_ANON);
+ inactive_lru_pages += get_lruvec_size(lruvec,
+ LRU_INACTIVE_ANON);
if (sc->nr_reclaimed < pages_for_compaction &&
inactive_lru_pages > pages_for_compaction)
return true;
--
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