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-rw-r--r--include/linux/swap.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 933d7c0c3542..32c06f028c7b 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -466,6 +466,7 @@ extern int page_swapcount(struct page *);
extern int __swp_swapcount(swp_entry_t entry);
extern int swp_swapcount(swp_entry_t entry);
extern struct swap_info_struct *page_swap_info(struct page *);
+extern struct swap_info_struct *swp_swap_info(swp_entry_t entry);
extern bool reuse_swap_page(struct page *, int *);
extern int try_to_free_swap(struct page *);
struct backing_dev_info;
@@ -474,6 +475,16 @@ extern void exit_swap_address_space(unsigned int type);
#else /* CONFIG_SWAP */
+static inline int swap_readpage(struct page *page, bool do_poll)
+{
+ return 0;
+}
+
+static inline struct swap_info_struct *swp_swap_info(swp_entry_t entry)
+{
+ return NULL;
+}
+
#define swap_address_space(entry) (NULL)
#define get_nr_swap_pages() 0L
#define total_swap_pages 0L