From: Changbin Du <changbin.du@xxxxxxxxx>
The struct page.mapping can NULL or points to one object of type
address_space, anon_vma or KSM private structure.
Signed-off-by: Changbin Du <changbin.du@xxxxxxxxx>
---
include/linux/mm_types.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 46f4ecf5..8dd6cb3 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -47,8 +47,8 @@ struct page {
* inode address_space, or NULL.
* If page mapped as anonymous
* memory, low bit is set, and
- * it points to anon_vma object:
- * see PAGE_MAPPING_ANON below.
+ * it points to anon_vma object
+ * or KSM private structure.
*/
void *s_mem; /* slab first object */
atomic_t compound_mapcount; /* first tail page */
--
2.7.4
--
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