mm: page_alloc: reduce cost of the fair zone allocation policy

[mirror_ubuntu-artful-kernel.git] / include / linux / mmzone.h

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 0bd77f730b380e2c39626c8a127cc1cf7ee8874b..318df70518509249bb67a8e9811bf20fdf5fc519 100644 (file)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -534,6 +534,7 @@ typedef enum {
        ZONE_WRITEBACK,                 /* reclaim scanning has recently found
                                         * many pages under writeback
                                         */
+       ZONE_FAIR_DEPLETED,             /* fair zone policy batch depleted */
 } zone_flags_t;
 
 static inline void zone_set_flag(struct zone *zone, zone_flags_t flag)
@@ -571,6 +572,11 @@ static inline int zone_is_reclaim_locked(const struct zone *zone)
        return test_bit(ZONE_RECLAIM_LOCKED, &zone->flags);
 }
 
+static inline int zone_is_fair_depleted(const struct zone *zone)
+{
+       return test_bit(ZONE_FAIR_DEPLETED, &zone->flags);
+}
+
 static inline int zone_is_oom_locked(const struct zone *zone)
 {
        return test_bit(ZONE_OOM_LOCKED, &zone->flags);