tmpfs: move swap swizzling into shmem

[linux-2.6-omap-h63xx.git] / include / linux / swap.h

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 2c3ce4c69b25411323756ad078b3cc7db425dad8..353153ea0bd5cc88ba03ab48959cc0a281a95e8b 100644 (file)
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -6,7 +6,6 @@
 #include <linux/mmzone.h>
 #include <linux/list.h>
 #include <linux/sched.h>
-#include <linux/pagemap.h>
 
 #include <asm/atomic.h>
 #include <asm/page.h>
@@ -159,9 +158,6 @@ struct swap_list_t {
 /* Swap 50% full? Release swapcache more aggressively.. */
 #define vm_swap_full() (nr_swap_pages*2 < total_swap_pages)
 
-/* linux/mm/memory.c */
-extern void swapin_readahead(swp_entry_t, unsigned long, struct vm_area_struct *);
-
 /* linux/mm/page_alloc.c */
 extern unsigned long totalram_pages;
 extern unsigned long totalreserve_pages;
@@ -224,16 +220,17 @@ extern struct address_space swapper_space;
 #define total_swapcache_pages  swapper_space.nrpages
 extern void show_swap_cache_info(void);
 extern int add_to_swap(struct page *, gfp_t);
+extern int add_to_swap_cache(struct page *, swp_entry_t, gfp_t);
 extern void __delete_from_swap_cache(struct page *);
 extern void delete_from_swap_cache(struct page *);
-extern int move_to_swap_cache(struct page *, swp_entry_t);
-extern int move_from_swap_cache(struct page *, unsigned long,
-               struct address_space *);
 extern void free_page_and_swap_cache(struct page *);
 extern void free_pages_and_swap_cache(struct page **, int);
-extern struct page * lookup_swap_cache(swp_entry_t);
-extern struct page * read_swap_cache_async(swp_entry_t, struct vm_area_struct *vma,
-                                          unsigned long addr);
+extern struct page *lookup_swap_cache(swp_entry_t);
+extern struct page *read_swap_cache_async(swp_entry_t, gfp_t,
+                       struct vm_area_struct *vma, unsigned long addr);
+extern struct page *swapin_readahead(swp_entry_t, gfp_t,
+                       struct vm_area_struct *vma, unsigned long addr);
+
 /* linux/mm/swapfile.c */
 extern long total_swap_pages;
 extern unsigned int nr_swapfiles;
@@ -307,7 +304,7 @@ static inline void swap_free(swp_entry_t swp)
 {
 }
 
-static inline struct page *read_swap_cache_async(swp_entry_t swp,
+static inline struct page *swapin_readahead(swp_entry_t swp, gfp_t gfp_mask,
                        struct vm_area_struct *vma, unsigned long addr)
 {
        return NULL;
@@ -318,22 +315,12 @@ static inline struct page *lookup_swap_cache(swp_entry_t swp)
        return NULL;
 }
 
-static inline int valid_swaphandles(swp_entry_t entry, unsigned long *offset)
-{
-       return 0;
-}
-
 #define can_share_swap_page(p)                 (page_mapcount(p) == 1)
 
-static inline int move_to_swap_cache(struct page *page, swp_entry_t entry)
-{
-       return 1;
-}
-
-static inline int move_from_swap_cache(struct page *page, unsigned long index,
-                                       struct address_space *mapping)
+static inline int add_to_swap_cache(struct page *page, swp_entry_t entry,
+                                                       gfp_t gfp_mask)
 {
-       return 1;
+       return -1;
 }
 
 static inline void __delete_from_swap_cache(struct page *page)