diff options
| -rw-r--r-- | mm/vmstat.c | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index dfdf2413390..3799a0f7543 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -190,8 +190,8 @@ static void __inc_zone_state(struct zone *zone, enum zone_stat_item item) (*p)++; if (unlikely(*p > STAT_THRESHOLD)) { - zone_page_state_add(*p, zone, item); - *p = 0; + zone_page_state_add(*p + STAT_THRESHOLD / 2, zone, item); + *p = -STAT_THRESHOLD / 2; } } @@ -209,8 +209,8 @@ void __dec_zone_page_state(struct page *page, enum zone_stat_item item) (*p)--; if (unlikely(*p < -STAT_THRESHOLD)) { - zone_page_state_add(*p, zone, item); - *p = 0; + zone_page_state_add(*p - STAT_THRESHOLD / 2, zone, item); + *p = STAT_THRESHOLD /2; } } EXPORT_SYMBOL(__dec_zone_page_state); @@ -239,19 +239,9 @@ EXPORT_SYMBOL(inc_zone_page_state); void dec_zone_page_state(struct page *page, enum zone_stat_item item) { unsigned long flags; - struct zone *zone; - s8 *p; - zone = page_zone(page); local_irq_save(flags); - p = diff_pointer(zone, item); - - (*p)--; - - if (unlikely(*p < -STAT_THRESHOLD)) { - zone_page_state_add(*p, zone, item); - *p = 0; - } + __dec_zone_page_state(page, item); local_irq_restore(flags); } EXPORT_SYMBOL(dec_zone_page_state); |