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-rw-r--r--mm/vmscan.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index d4da097533c..7592d8eb114 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1223,7 +1223,6 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
struct scan_control *sc, int priority, int file)
{
unsigned long pgmoved;
- int pgdeactivate = 0;
unsigned long pgscanned;
LIST_HEAD(l_hold); /* The pages which were snipped off */
LIST_HEAD(l_inactive);
@@ -1252,7 +1251,7 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
__mod_zone_page_state(zone, NR_ACTIVE_ANON, -pgmoved);
spin_unlock_irq(&zone->lru_lock);
- pgmoved = 0;
+ pgmoved = 0; /* count referenced (mapping) mapped pages */
while (!list_empty(&l_hold)) {
cond_resched();
page = lru_to_page(&l_hold);
@@ -1286,7 +1285,7 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
*/
reclaim_stat->recent_rotated[!!file] += pgmoved;
- pgmoved = 0;
+ pgmoved = 0; /* count pages moved to inactive list */
while (!list_empty(&l_inactive)) {
page = lru_to_page(&l_inactive);
prefetchw_prev_lru_page(page, &l_inactive, flags);
@@ -1299,10 +1298,7 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
mem_cgroup_add_lru_list(page, lru);
pgmoved++;
if (!pagevec_add(&pvec, page)) {
- __mod_zone_page_state(zone, NR_LRU_BASE + lru, pgmoved);
spin_unlock_irq(&zone->lru_lock);
- pgdeactivate += pgmoved;
- pgmoved = 0;
if (buffer_heads_over_limit)
pagevec_strip(&pvec);
__pagevec_release(&pvec);
@@ -1310,9 +1306,8 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
}
}
__mod_zone_page_state(zone, NR_LRU_BASE + lru, pgmoved);
- pgdeactivate += pgmoved;
__count_zone_vm_events(PGREFILL, zone, pgscanned);
- __count_vm_events(PGDEACTIVATE, pgdeactivate);
+ __count_vm_events(PGDEACTIVATE, pgmoved);
spin_unlock_irq(&zone->lru_lock);
if (buffer_heads_over_limit)
pagevec_strip(&pvec);