1 files changed, 23 insertions, 2 deletions

diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index 5ac51552d908..dfa2ed4c0d26 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -11,6 +11,9 @@
 /* The full zone was compacted */
 #define COMPACT_COMPLETE        3
 
+#define COMPACT_MODE_DIRECT_RECLAIM     0
+#define COMPACT_MODE_KSWAPD             1
+
 #ifdef CONFIG_COMPACTION
 extern int sysctl_compact_memory;
 extern int sysctl_compaction_handler(struct ctl_table *table, int write,
@@ -21,7 +24,12 @@ extern int sysctl_extfrag_handler(struct ctl_table *table, int write,
 
 extern int fragmentation_index(struct zone *zone, unsigned int order);
 extern unsigned long try_to_compact_pages(struct zonelist *zonelist,
-                        int order, gfp_t gfp_mask, nodemask_t *mask);
+                        int order, gfp_t gfp_mask, nodemask_t *mask,
+                        bool sync);
+extern unsigned long compaction_suitable(struct zone *zone, int order);
+extern unsigned long compact_zone_order(struct zone *zone, int order,
+                                        gfp_t gfp_mask, bool sync,
+                                        int compact_mode);
 
 /* Do not skip compaction more than 64 times */
 #define COMPACT_MAX_DEFER_SHIFT 6
@@ -54,7 +62,20 @@ static inline bool compaction_deferred(struct zone *zone)
 
 #else
 static inline unsigned long try_to_compact_pages(struct zonelist *zonelist,
-                        int order, gfp_t gfp_mask, nodemask_t *nodemask)
+                        int order, gfp_t gfp_mask, nodemask_t *nodemask,
+                        bool sync)
+{
+        return COMPACT_CONTINUE;
+}
+
+static inline unsigned long compaction_suitable(struct zone *zone, int order)
+{
+        return COMPACT_SKIPPED;
+}
+
+static inline unsigned long compact_zone_order(struct zone *zone, int order,
+                                               gfp_t gfp_mask, bool sync,
+                                               int compact_mode)
 {
         return COMPACT_CONTINUE;
 }