memcg: handle swap caches

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

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 91dee50fe26081b150e3be9155f1f9d7b147f730..f8f3907533f07f51ffa816506028d878cb286478 100644 (file)
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -333,6 +333,22 @@ static inline void disable_swap_token(void)
        put_swap_token(swap_token_mm);
 }
 
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+extern int mem_cgroup_cache_charge_swapin(struct page *page,
+                               struct mm_struct *mm, gfp_t mask, bool locked);
+extern void mem_cgroup_uncharge_swapcache(struct page *page);
+#else
+static inline
+int mem_cgroup_cache_charge_swapin(struct page *page,
+                               struct mm_struct *mm, gfp_t mask, bool locked)
+{
+       return 0;
+}
+static inline void mem_cgroup_uncharge_swapcache(struct page *page)
+{
+}
+#endif
+
 #else /* CONFIG_SWAP */
 
 #define nr_swap_pages                          0L
@@ -409,6 +425,12 @@ static inline swp_entry_t get_swap_page(void)
 #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;
+}
+
 #endif /* CONFIG_SWAP */
 #endif /* __KERNEL__*/
 #endif /* _LINUX_SWAP_H */