[PATCH v2] vmscan: reverse lru scanning order

[Konstantin Khlebnikov]

LRU scanning order was accidentially changed in commit v2.6.27-5584-gb69408e:
"vmscan: Use an indexed array for LRU variables".
Before that commit reclaimer always scan active lists first.

This patch just reverse it back.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
---
 include/linux/mmzone.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index be1ac8d..0094389 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -141,7 +141,8 @@ enum lru_list {
 
 #define for_each_lru(l) for (l = 0; l < NR_LRU_LISTS; l++)
 
-#define for_each_evictable_lru(l) for (l = 0; l <= LRU_ACTIVE_FILE; l++)
+#define for_each_evictable_lru(l) \
+	for (l = LRU_ACTIVE_FILE; (int)l >= LRU_INACTIVE_ANON; l--)
 
 static inline int is_file_lru(enum lru_list l)
 {

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