[PATCH] mm: add populated_zone() helper

[karo-tx-linux.git] / mm / vmscan.c

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 5c8a412b43f4fe3564da89a3a5e3c99585df71fe..7681d8ee04fed8823cc412c35330cfd10f621a5f 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -897,7 +897,7 @@ shrink_caches(struct zone **zones, struct scan_control *sc)
        for (i = 0; zones[i] != NULL; i++) {
                struct zone *zone = zones[i];
 
-               if (zone->present_pages == 0)
+               if (!populated_zone(zone))
                        continue;
 
                if (!cpuset_zone_allowed(zone, __GFP_HARDWALL))
@@ -1069,7 +1069,7 @@ loop_again:
                        for (i = pgdat->nr_zones - 1; i >= 0; i--) {
                                struct zone *zone = pgdat->node_zones + i;
 
-                               if (zone->present_pages == 0)
+                               if (!populated_zone(zone))
                                        continue;
 
                                if (zone->all_unreclaimable &&
@@ -1106,7 +1106,7 @@ scan:
                        struct zone *zone = pgdat->node_zones + i;
                        int nr_slab;
 
-                       if (zone->present_pages == 0)
+                       if (!populated_zone(zone))
                                continue;
 
                        if (zone->all_unreclaimable && priority != DEF_PRIORITY)
@@ -1258,7 +1258,7 @@ void wakeup_kswapd(struct zone *zone, int order)
 {
        pg_data_t *pgdat;
 
-       if (zone->present_pages == 0)
+       if (!populated_zone(zone))
                return;
 
        pgdat = zone->zone_pgdat;