1 files changed, 20 insertions, 6 deletions

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 428328a05fa1..156e18f3919b 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -81,8 +81,9 @@ struct zone_padding {
 enum zone_stat_item {
         /* First 128 byte cacheline (assuming 64 bit words) */
         NR_FREE_PAGES,
-        NR_INACTIVE,
-        NR_ACTIVE,
+        NR_LRU_BASE,
+        NR_INACTIVE = NR_LRU_BASE, /* must match order of LRU_[IN]ACTIVE */
+        NR_ACTIVE,      /*  "     "     "   "       "         */
         NR_ANON_PAGES,  /* Mapped anonymous pages */
         NR_FILE_MAPPED, /* pagecache pages mapped into pagetables.
                            only modified from process context */
@@ -107,6 +108,19 @@ enum zone_stat_item {
 #endif
         NR_VM_ZONE_STAT_ITEMS };
 
+enum lru_list {
+        LRU_BASE,
+        LRU_INACTIVE=LRU_BASE,  /* must match order of NR_[IN]ACTIVE */
+        LRU_ACTIVE,             /*  "     "     "   "       "        */
+        NR_LRU_LISTS };
+
+#define for_each_lru(l) for (l = 0; l < NR_LRU_LISTS; l++)
+
+static inline int is_active_lru(enum lru_list l)
+{
+        return (l == LRU_ACTIVE);
+}
+
 struct per_cpu_pages {
         int count;              /* number of pages in the list */
         int high;               /* high watermark, emptying needed */
@@ -251,10 +265,10 @@ struct zone {
 
         /* Fields commonly accessed by the page reclaim scanner */
         spinlock_t              lru_lock;       
-        struct list_head        active_list;
-        struct list_head        inactive_list;
-        unsigned long           nr_scan_active;
-        unsigned long           nr_scan_inactive;
+        struct {
+                struct list_head list;
+                unsigned long nr_scan;
+        } lru[NR_LRU_LISTS];
         unsigned long           pages_scanned;     /* since last reclaim */
         unsigned long           flags;             /* zone flags, see below */