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Diffstat (limited to 'include')
-rw-r--r--include/linux/swap.h14
1 files changed, 9 insertions, 5 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 259e96c150e..fed5e8e1104 100644
--- 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.
*/
@@ -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);
@@ -353,9 +354,12 @@ 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)
{
}