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Diffstat (limited to 'include/linux/compaction.h')
-rw-r--r--include/linux/compaction.h25
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;
}