39 extern int fragmentation_index(struct zone *zone, unsigned int order);
40 extern unsigned long try_to_compact_pages(gfp_t gfp_mask, unsigned int order,
43 extern void compact_pgdat(pg_data_t *pgdat, int order);
45 extern unsigned long compaction_suitable(struct zone *zone, int order,
48 extern void defer_compaction(struct zone *zone, int order);
49 extern bool compaction_deferred(struct zone *zone, int order);
50 extern void compaction_defer_reset(struct zone *zone, int order,
52 extern bool compaction_restarting(struct zone *zone, int order);
56 			unsigned int order, int alloc_flags,  in try_to_compact_pages()  argument
63 static inline void compact_pgdat(pg_data_t *pgdat, int order)  in compact_pgdat()  argument
71 static inline unsigned long compaction_suitable(struct zone *zone, int order,  in compaction_suitable()  argument
77 static inline void defer_compaction(struct zone *zone, int order)  in defer_compaction()  argument
81 static inline bool compaction_deferred(struct zone *zone, int order)  in compaction_deferred()  argument