diff mbox series

[3/3] mm/page_ext: move page_ext_operations definition under CONFIG_PAGE_EXTENSION

Message ID 20230717113227.1897173-4-shikemeng@huaweicloud.com (mailing list archive)
State New
Headers show
Series [1/3] mm/page_poison: remove unused page_ext.h from page_poison | expand

Commit Message

Kemeng Shi July 17, 2023, 11:32 a.m. UTC 
page_ext_operations should only be defined when CONFIG_PAGE_EXTENSION is
enabled.
Besides, this may detect missing rely on CONFIG_PAGE_EXTENSION from
future Page Extension client at compile time.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
---
 include/linux/page_ext.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/linux/page_ext.h b/include/linux/page_ext.h
index 67314f648aeb..8dd21d87e0da 100644
--- a/include/linux/page_ext.h
+++ b/include/linux/page_ext.h
@@ -8,6 +8,7 @@ 
 
 struct pglist_data;
 
+#ifdef CONFIG_PAGE_EXTENSION
 /**
  * struct page_ext_operations - per page_ext client operations
  * @offset: Offset to the client's data within page_ext. Offset is returned to
@@ -29,8 +30,6 @@  struct page_ext_operations {
 	bool need_shared_flags;
 };
 
-#ifdef CONFIG_PAGE_EXTENSION
-
 /*
  * The page_ext_flags users must set need_shared_flags to true.
  */