[PATCH v1 1/1] mm: page_alloc: Avoid defining unused function

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

In some configurations I got
mm/page_alloc.c:656:20: warning: unused function 'add_to_free_list' [-Wunused-function]
Becuase the only user is guarged with a certain ifdeffery,
do the same for add_to_free_list().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 mm/page_alloc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 33d4a1be927b..0fb796b700a4 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -653,6 +653,7 @@ static inline void __add_to_free_list(struct page *page, struct zone *zone,
 	area->nr_free++;
 }
 
+#ifdef CONFIG_MEMORY_FAILURE
 static inline void add_to_free_list(struct page *page, struct zone *zone,
 				    unsigned int order, int migratetype,
 				    bool tail)
@@ -660,6 +661,7 @@ static inline void add_to_free_list(struct page *page, struct zone *zone,
 	__add_to_free_list(page, zone, order, migratetype, tail);
 	account_freepages(zone, 1 << order, migratetype);
 }
+#endif
 
 /*
  * Used for pages which are on another list. Move the pages to the tail
-- 
2.43.0.rc1.1336.g36b5255a03ac