diff --git a/include/linux/frontswap.h b/include/linux/frontswap.h
index 0e4e2ee..3044254 100644
--- a/include/linux/frontswap.h
+++ b/include/linux/frontswap.h
@@ -19,6 +19,8 @@
 extern void frontswap_shrink(unsigned long);
 extern unsigned long frontswap_curr_pages(void);
 extern void frontswap_writethrough(bool);
+#define FRONTSWAP_HAS_EXCLUSIVE_GETS
+extern void frontswap_tmem_exclusive_gets(bool);
 
 extern void __frontswap_init(unsigned type);
 extern int __frontswap_store(struct page *page);