mm: compaction: handle active and inactive fairly in too_many_isolated
[linux-2.6.git] / mm / compaction.c
index 94cce51..4d709ee 100644 (file)
@@ -214,15 +214,16 @@ static void acct_isolated(struct zone *zone, struct compact_control *cc)
 /* Similar to reclaim, but different enough that they don't share logic */
 static bool too_many_isolated(struct zone *zone)
 {
-
-       unsigned long inactive, isolated;
+       unsigned long active, inactive, isolated;
 
        inactive = zone_page_state(zone, NR_INACTIVE_FILE) +
                                        zone_page_state(zone, NR_INACTIVE_ANON);
+       active = zone_page_state(zone, NR_ACTIVE_FILE) +
+                                       zone_page_state(zone, NR_ACTIVE_ANON);
        isolated = zone_page_state(zone, NR_ISOLATED_FILE) +
                                        zone_page_state(zone, NR_ISOLATED_ANON);
 
-       return isolated > inactive;
+       return isolated > (inactive + active) / 2;
 }
 
 /*