fail_migrate_page() isn't used anywhere, so remove it.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index e4671f9..4308018 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -41,9 +41,6 @@ extern int migrate_page(struct address_space *,
extern int migrate_pages(struct list_head *l, new_page_t x,
unsigned long private, enum migrate_mode mode, int reason);
-extern int fail_migrate_page(struct address_space *,
- struct page *, struct page *);
-
extern int migrate_prep(void);
extern int migrate_prep_local(void);
extern int migrate_vmas(struct mm_struct *mm,
@@ -83,7 +80,6 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
/* Possible settings for the migrate_page() method in address_operations */
#define migrate_page NULL
-#define fail_migrate_page NULL
#endif /* CONFIG_MIGRATION */
diff --git a/mm/migrate.c b/mm/migrate.c
index cdafdc0..b595f89 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -550,14 +550,6 @@ void migrate_page_copy(struct page *newpage, struct page *page)
* Migration functions
***********************************************************/
-/* Always fail migration. Used for mappings that are not movable */
-int fail_migrate_page(struct address_space *mapping,
- struct page *newpage, struct page *page)
-{
- return -EIO;
-}
-EXPORT_SYMBOL(fail_migrate_page);
-
/*
* Common logic to directly migrate a single page suitable for
* pages that do not use PagePrivate/PagePrivate2.
--
1.7.9.5
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