1 files changed, 21 insertions, 0 deletions

diff --git a/include/linux/swapops.h b/include/linux/swapops.h
index 9c5a2628d6ce..1d3877c39a00 100644
--- a/include/linux/swapops.h
+++ b/include/linux/swapops.h
@@ -124,6 +124,11 @@ static inline bool is_write_device_private_entry(swp_entry_t entry)
         return unlikely(swp_type(entry) == SWP_DEVICE_WRITE);
 }
 
+static inline unsigned long device_private_entry_to_pfn(swp_entry_t entry)
+{
+        return swp_offset(entry);
+}
+
 static inline struct page *device_private_entry_to_page(swp_entry_t entry)
 {
         return pfn_to_page(swp_offset(entry));
@@ -154,6 +159,11 @@ static inline bool is_write_device_private_entry(swp_entry_t entry)
         return false;
 }
 
+static inline unsigned long device_private_entry_to_pfn(swp_entry_t entry)
+{
+        return 0;
+}
+
 static inline struct page *device_private_entry_to_page(swp_entry_t entry)
 {
         return NULL;
@@ -189,6 +199,11 @@ static inline int is_write_migration_entry(swp_entry_t entry)
         return unlikely(swp_type(entry) == SWP_MIGRATION_WRITE);
 }
 
+static inline unsigned long migration_entry_to_pfn(swp_entry_t entry)
+{
+        return swp_offset(entry);
+}
+
 static inline struct page *migration_entry_to_page(swp_entry_t entry)
 {
         struct page *p = pfn_to_page(swp_offset(entry));
@@ -218,6 +233,12 @@ static inline int is_migration_entry(swp_entry_t swp)
 {
         return 0;
 }
+
+static inline unsigned long migration_entry_to_pfn(swp_entry_t entry)
+{
+        return 0;
+}
+
 static inline struct page *migration_entry_to_page(swp_entry_t entry)
 {
         return NULL;