include/linux/hugetlb.h: make isolate_huge_page() an inline

With CONFIG_HUGETLBFS=n:

  mm/migrate.c: In function `do_move_page_to_node_array':
  include/linux/hugetlb.h:140:33: warning: statement with no effect [-Wunused-value]
   #define isolate_huge_page(p, l) false
                                   ^
  mm/migrate.c:1170:4: note: in expansion of macro `isolate_huge_page'
      isolate_huge_page(page, &pagelist);

Reported-by: Borislav Petkov <[email protected]>
Tested-by: Borislav Petkov <[email protected]>
Signed-off-by: Naoya Horiguchi <[email protected]>
Acked-by: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 9649ff0c63f8d0bb5253cd08b3f32499986b4cfd..bd7e987522221f42b7042cc242abc8ca31a72996 100644 (file)
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -142,7 +142,10 @@ static inline int dequeue_hwpoisoned_huge_page(struct page *page)
        return 0;
 }
 
-#define isolate_huge_page(p, l) false
+static inline bool isolate_huge_page(struct page *page, struct list_head *list)
+{
+       return false;
+}
 #define putback_active_hugepage(p)     do {} while (0)
 #define is_hugepage_active(x)  false