mac80211: fix PS-poll response, race

[mv-sheeva.git] / include / linux / swap.h

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 259e96c150efb674089e0c50c4f85ed0e4caba6c..7c15334f3ff2df3d3c0f4dc5d2a77c64563c2dcf 100644 (file)
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -129,9 +129,10 @@ enum {
 
 #define SWAP_CLUSTER_MAX 32
 
-#define SWAP_MAP_MAX   0x7fff
-#define SWAP_MAP_BAD   0x8000
-
+#define SWAP_MAP_MAX   0x7ffe
+#define SWAP_MAP_BAD   0x7fff
+#define SWAP_HAS_CACHE  0x8000         /* There is a swap cache of entry. */
+#define SWAP_COUNT_MASK (~SWAP_HAS_CACHE)
 /*
  * The in-memory structure used to track swap areas.
  */
@@ -255,7 +256,7 @@ extern void swap_unplug_io_fn(struct backing_dev_info *, struct page *);
 
 #ifdef CONFIG_SWAP
 /* linux/mm/page_io.c */
-extern int swap_readpage(struct file *, struct page *);
+extern int swap_readpage(struct page *);
 extern int swap_writepage(struct page *page, struct writeback_control *wbc);
 extern void end_swap_bio_read(struct bio *bio, int err);
 
@@ -281,7 +282,7 @@ extern long total_swap_pages;
 extern void si_swapinfo(struct sysinfo *);
 extern swp_entry_t get_swap_page(void);
 extern swp_entry_t get_swap_page_of_type(int);
-extern int swap_duplicate(swp_entry_t);
+extern void swap_duplicate(swp_entry_t);
 extern int swapcache_prepare(swp_entry_t);
 extern int valid_swaphandles(swp_entry_t, unsigned long *);
 extern void swap_free(swp_entry_t);
@@ -297,8 +298,8 @@ extern int try_to_free_swap(struct page *);
 struct backing_dev_info;
 
 /* linux/mm/thrash.c */
-extern struct mm_struct * swap_token_mm;
-extern void grab_swap_token(void);
+extern struct mm_struct *swap_token_mm;
+extern void grab_swap_token(struct mm_struct *);
 extern void __put_swap_token(struct mm_struct *);
 
 static inline int has_swap_token(struct mm_struct *mm)
@@ -318,10 +319,11 @@ static inline void disable_swap_token(void)
 }
 
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR
-extern void mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent);
+extern void
+mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent, bool swapout);
 #else
 static inline void
-mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent)
+mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent, bool swapout)
 {
 }
 #endif
@@ -353,9 +355,12 @@ static inline void show_swap_cache_info(void)
 }
 
 #define free_swap_and_cache(swp)       is_migration_entry(swp)
-#define swap_duplicate(swp)            is_migration_entry(swp)
 #define swapcache_prepare(swp)         is_migration_entry(swp)
 
+static inline void swap_duplicate(swp_entry_t swp)
+{
+}
+
 static inline void swap_free(swp_entry_t swp)
 {
 }
@@ -414,16 +419,10 @@ static inline swp_entry_t get_swap_page(void)
 }
 
 /* linux/mm/thrash.c */
-#define put_swap_token(x) do { } while(0)
-#define grab_swap_token()  do { } while(0)
-#define has_swap_token(x) 0
-#define disable_swap_token() do { } while(0)
-
-static inline int mem_cgroup_cache_charge_swapin(struct page *page,
-                       struct mm_struct *mm, gfp_t mask, bool locked)
-{
-       return 0;
-}
+#define put_swap_token(mm)     do { } while (0)
+#define grab_swap_token(mm)    do { } while (0)
+#define has_swap_token(mm)     0
+#define disable_swap_token()   do { } while (0)
 
 static inline void
 mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent)