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Subject[PATCH 10/12] mm/vmscan: push lruvec pointer into get_scan_count()
From
Date
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
---
mm/vmscan.c | 25 +++++++++----------------
1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 258e002..1724ec6 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -150,11 +150,6 @@ static bool global_reclaim(struct scan_control *sc)
}
#endif

-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 get_lruvec_size(struct lruvec *lruvec, enum lru_list lru)
{
if (!mem_cgroup_disabled())
@@ -1623,20 +1618,18 @@ static int vmscan_swappiness(struct scan_control *sc)
*
* nr[0] = anon pages to scan; nr[1] = file pages to scan
*/
-static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,
+static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc,
unsigned long *nr)
{
unsigned long anon, file, free;
unsigned long anon_prio, file_prio;
unsigned long ap, fp;
- struct zone_reclaim_stat *reclaim_stat = get_reclaim_stat(mz);
+ struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
u64 fraction[2], denominator;
enum lru_list lru;
int noswap = 0;
bool force_scan = false;
- struct lruvec *lruvec;
-
- lruvec = mem_cgroup_zone_lruvec(mz->zone, mz->mem_cgroup);
+ struct zone *zone = lruvec_zone(lruvec);

/*
* If the zone or memcg is small, nr[l] can be 0. This
@@ -1648,7 +1641,7 @@ static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,
* latencies, so it's better to scan a minimum amount there as
* well.
*/
- if (current_is_kswapd() && mz->zone->all_unreclaimable)
+ if (current_is_kswapd() && zone->all_unreclaimable)
force_scan = true;
if (!global_reclaim(sc))
force_scan = true;
@@ -1668,10 +1661,10 @@ static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,
get_lruvec_size(lruvec, LRU_INACTIVE_FILE);

if (global_reclaim(sc)) {
- free = zone_page_state(mz->zone, NR_FREE_PAGES);
+ free = zone_page_state(zone, NR_FREE_PAGES);
/* If we have very few page cache pages,
force-scan anon pages. */
- if (unlikely(file + free <= high_wmark_pages(mz->zone))) {
+ if (unlikely(file + free <= high_wmark_pages(zone))) {
fraction[0] = 1;
fraction[1] = 0;
denominator = 1;
@@ -1697,7 +1690,7 @@ static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,
*
* anon in [0], file in [1]
*/
- spin_lock_irq(&mz->zone->lru_lock);
+ spin_lock_irq(&zone->lru_lock);
if (unlikely(reclaim_stat->recent_scanned[0] > anon / 4)) {
reclaim_stat->recent_scanned[0] /= 2;
reclaim_stat->recent_rotated[0] /= 2;
@@ -1718,7 +1711,7 @@ static void get_scan_count(struct mem_cgroup_zone *mz, struct scan_control *sc,

fp = (file_prio + 1) * (reclaim_stat->recent_scanned[1] + 1);
fp /= reclaim_stat->recent_rotated[1] + 1;
- spin_unlock_irq(&mz->zone->lru_lock);
+ spin_unlock_irq(&zone->lru_lock);

fraction[0] = ap;
fraction[1] = fp;
@@ -1836,7 +1829,7 @@ static void shrink_mem_cgroup_zone(struct mem_cgroup_zone *mz,
restart:
nr_reclaimed = 0;
nr_scanned = sc->nr_scanned;
- get_scan_count(mz, sc, nr);
+ get_scan_count(lruvec, sc, nr);

blk_start_plug(&plug);
while (nr[LRU_INACTIVE_ANON] || nr[LRU_ACTIVE_FILE] ||


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