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-rw-r--r--include/linux/mmzone.h3
-rw-r--r--include/linux/swap.h6
2 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 66d68e5d5a0f..fc99e9241846 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -206,6 +206,9 @@ enum node_stat_item {
NR_KERNEL_SCS_KB, /* measured in KiB */
#endif
NR_PAGETABLE, /* used for pagetables */
+#ifdef CONFIG_SWAP
+ NR_SWAPCACHE,
+#endif
NR_VM_NODE_STAT_ITEMS
};
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 3f1f7ae0fbe9..0d64a2bc7e00 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -408,7 +408,11 @@ extern struct address_space *swapper_spaces[];
#define swap_address_space(entry) \
(&swapper_spaces[swp_type(entry)][swp_offset(entry) \
>> SWAP_ADDRESS_SPACE_SHIFT])
-extern unsigned long total_swapcache_pages(void);
+static inline unsigned long total_swapcache_pages(void)
+{
+ return global_node_page_state(NR_SWAPCACHE);
+}
+
extern void show_swap_cache_info(void);
extern int add_to_swap(struct page *page);
extern void *get_shadow_from_swap_cache(swp_entry_t entry);