From: Changbin Du <[email protected]> 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 <[email protected]> --- 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
