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mm/vmscan: replace zone_nr_lru_pages() with get_lruvec_size() 

If memory cgroup is 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@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>
hifive-unleashed-5.1
Konstantin Khlebnikov 2012-05-29 15:07:00 -07:00 committed by Linus Torvalds
parent 27ac81d85e
commit 074291fea8
3 changed files with 27 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/linux/memcontrol.h
View File

@ -123,8 +123,7 @@ 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,
@ -343,8 +342,7 @@ 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;
}

9
mm/memcontrol.c
View File

@ -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)
{

31
mm/vmscan.c
View File

@ -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
*/
@ -1603,6 +1598,9 @@ 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
@ -1628,10 +1626,10 @@ 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);
@ -1694,7 +1692,7 @@ 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 || !vmscan_swappiness(sc)) {
scan >>= sc->priority;
if (!scan && force_scan)
@ -1730,6 +1728,7 @@ 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))
@ -1762,10 +1761,12 @@ 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;