Linux-libre 4.5-gnu

1 files changed, 53 insertions, 35 deletions

diff --git a/include/linux/swap.h b/include/linux/swap.h
index f2eb1893e..d18b65c53 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -287,9 +287,7 @@ static inline void workingset_node_shadows_dec(struct radix_tree_node *node)
 /* linux/mm/page_alloc.c */
 extern unsigned long totalram_pages;
 extern unsigned long totalreserve_pages;
-extern unsigned long dirty_balance_reserve;
 extern unsigned long nr_free_buffer_pages(void);
-extern unsigned long nr_unallocated_buffer_pages(void);
 extern unsigned long nr_free_pagecache_pages(void);
 
 /* Definition of global_page_state not available yet */
@@ -309,6 +307,7 @@ extern void lru_add_drain_cpu(int cpu);
 extern void lru_add_drain_all(void);
 extern void rotate_reclaimable_page(struct page *page);
 extern void deactivate_file_page(struct page *page);
+extern void deactivate_page(struct page *page);
 extern void swap_setup(void);
 
 extern void add_page_to_unevictable_list(struct page *page);
@@ -329,8 +328,6 @@ extern unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem,
 						struct zone *zone,
 						unsigned long *nr_scanned);
 extern unsigned long shrink_all_memory(unsigned long nr_pages);
-extern unsigned long shrink_memory_mask(unsigned long nr_to_reclaim,
-		gfp_t mask);
 extern int vm_swappiness;
 extern int remove_mapping(struct address_space *mapping, struct page *page);
 extern unsigned long vm_total_pages;
@@ -353,33 +350,7 @@ extern void check_move_unevictable_pages(struct page **, int nr_pages);
 
 extern int kswapd_run(int nid);
 extern void kswapd_stop(int nid);
-#ifdef CONFIG_MEMCG
-static inline int mem_cgroup_swappiness(struct mem_cgroup *memcg)
-{
-	/* root ? */
-	if (mem_cgroup_disabled() || !memcg->css.parent)
-		return vm_swappiness;
-
-	return memcg->swappiness;
-}
 
-#else
-static inline int mem_cgroup_swappiness(struct mem_cgroup *mem)
-{
-	return vm_swappiness;
-}
-#endif
-#ifdef CONFIG_MEMCG_SWAP
-extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);
-extern void mem_cgroup_uncharge_swap(swp_entry_t entry);
-#else
-static inline void mem_cgroup_swapout(struct page *page, swp_entry_t entry)
-{
-}
-static inline void mem_cgroup_uncharge_swap(swp_entry_t entry)
-{
-}
-#endif
 #ifdef CONFIG_SWAP
 /* linux/mm/page_io.c */
 extern int swap_readpage(struct page *);
@@ -442,18 +413,14 @@ extern void swapcache_free(swp_entry_t);
 extern int free_swap_and_cache(swp_entry_t);
 extern int swap_type_of(dev_t, sector_t, struct block_device **);
 extern unsigned int count_swap_pages(int, int);
-extern sector_t map_swap_entry(swp_entry_t entry, struct block_device **);
 extern sector_t map_swap_page(struct page *, struct block_device **);
 extern sector_t swapdev_block(int, pgoff_t);
-extern struct swap_info_struct *get_swap_info_struct(unsigned);
 extern int page_swapcount(struct page *);
 extern int swp_swapcount(swp_entry_t entry);
 extern struct swap_info_struct *page_swap_info(struct page *);
 extern int reuse_swap_page(struct page *);
 extern int try_to_free_swap(struct page *);
 struct backing_dev_info;
-extern void get_swap_range_of_type(int type, swp_entry_t *start,
-		swp_entry_t *end, unsigned int limit);
 
 #else /* CONFIG_SWAP */
 
@@ -546,7 +513,8 @@ static inline int swp_swapcount(swp_entry_t entry)
 	return 0;
 }
 
-#define reuse_swap_page(page)	(page_mapcount(page) == 1)
+#define reuse_swap_page(page) \
+	(!PageTransCompound(page) && page_mapcount(page) == 1)
 
 static inline int try_to_free_swap(struct page *page)
 {
@@ -561,5 +529,55 @@ static inline swp_entry_t get_swap_page(void)
 }
 
 #endif /* CONFIG_SWAP */
+
+#ifdef CONFIG_MEMCG
+static inline int mem_cgroup_swappiness(struct mem_cgroup *memcg)
+{
+	/* root ? */
+	if (mem_cgroup_disabled() || !memcg->css.parent)
+		return vm_swappiness;
+
+	return memcg->swappiness;
+}
+
+#else
+static inline int mem_cgroup_swappiness(struct mem_cgroup *mem)
+{
+	return vm_swappiness;
+}
+#endif
+
+#ifdef CONFIG_MEMCG_SWAP
+extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);
+extern int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry);
+extern void mem_cgroup_uncharge_swap(swp_entry_t entry);
+extern long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg);
+extern bool mem_cgroup_swap_full(struct page *page);
+#else
+static inline void mem_cgroup_swapout(struct page *page, swp_entry_t entry)
+{
+}
+
+static inline int mem_cgroup_try_charge_swap(struct page *page,
+					     swp_entry_t entry)
+{
+	return 0;
+}
+
+static inline void mem_cgroup_uncharge_swap(swp_entry_t entry)
+{
+}
+
+static inline long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg)
+{
+	return get_nr_swap_pages();
+}
+
+static inline bool mem_cgroup_swap_full(struct page *page)
+{
+	return vm_swap_full();
+}
+#endif
+
 #endif /* __KERNEL__*/
 #endif /* _LINUX_SWAP_H */