mm: test and set zone reclaim lock before starting reclaim

[linux-2.6-omap-h63xx.git] / include / linux / mmzone.h

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 9011505e740d8405000b1dc14a0b3f8db4701172..4c4522a51a3bfa6667a60d0c593efcf970781e52 100644 (file)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -351,6 +351,12 @@ static inline void zone_set_flag(struct zone *zone, zone_flags_t flag)
 {
        set_bit(flag, &zone->flags);
 }
+
+static inline int zone_test_and_set_flag(struct zone *zone, zone_flags_t flag)
+{
+       return test_and_set_bit(flag, &zone->flags);
+}
+
 static inline void zone_clear_flag(struct zone *zone, zone_flags_t flag)
 {
        clear_bit(flag, &zone->flags);
@@ -360,10 +366,12 @@ static inline int zone_is_all_unreclaimable(const struct zone *zone)
 {
        return test_bit(ZONE_ALL_UNRECLAIMABLE, &zone->flags);
 }
+
 static inline int zone_is_reclaim_locked(const struct zone *zone)
 {
        return test_bit(ZONE_RECLAIM_LOCKED, &zone->flags);
 }
+
 static inline int zone_is_oom_locked(const struct zone *zone)
 {
        return test_bit(ZONE_OOM_LOCKED, &zone->flags);