mm: vmscan: do not writeback filesystem pages in direct reclaim

[pandora-kernel.git] / include / linux / mmzone.h

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 9f7c3eb..2c41b2c 100644 (file)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -16,7 +16,7 @@
 #include <linux/nodemask.h>
 #include <linux/pageblock-flags.h>
 #include <generated/bounds.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <asm/page.h>
 
 /* Free memory management - zoned buddy allocator.  */
@@ -100,6 +100,7 @@ enum zone_stat_item {
        NR_UNSTABLE_NFS,        /* NFS unstable pages */
        NR_BOUNCE,
        NR_VMSCAN_WRITE,
+       NR_VMSCAN_WRITE_SKIP,
        NR_WRITEBACK_TEMP,      /* Writeback using temporary buffers */
        NR_ISOLATED_ANON,       /* Temporary isolated pages from anon lru */
        NR_ISOLATED_FILE,       /* Temporary isolated pages from file lru */
@@ -158,6 +159,24 @@ static inline int is_unevictable_lru(enum lru_list l)
        return (l == LRU_UNEVICTABLE);
 }
 
+/* Mask used at gathering information at once (see memcontrol.c) */
+#define LRU_ALL_FILE (BIT(LRU_INACTIVE_FILE) | BIT(LRU_ACTIVE_FILE))
+#define LRU_ALL_ANON (BIT(LRU_INACTIVE_ANON) | BIT(LRU_ACTIVE_ANON))
+#define LRU_ALL_EVICTABLE (LRU_ALL_FILE | LRU_ALL_ANON)
+#define LRU_ALL             ((1 << NR_LRU_LISTS) - 1)
+
+/* Isolate inactive pages */
+#define ISOLATE_INACTIVE       ((__force isolate_mode_t)0x1)
+/* Isolate active pages */
+#define ISOLATE_ACTIVE         ((__force isolate_mode_t)0x2)
+/* Isolate clean file */
+#define ISOLATE_CLEAN          ((__force isolate_mode_t)0x4)
+/* Isolate unmapped file */
+#define ISOLATE_UNMAPPED       ((__force isolate_mode_t)0x8)
+
+/* LRU Isolation modes. */
+typedef unsigned __bitwise__ isolate_mode_t;
+
 enum zone_watermarks {
        WMARK_MIN,
        WMARK_LOW,