diff options
| author | Changbin Du <[email protected]> | 2017-11-15 17:32:53 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-11-15 18:21:02 -0800 |
| commit | 41710443f790b5f7f5305eba99dacce88e259f4c (patch) | |
| tree | f5d90cb7f7e1bccb1f6080c8229d5487c1b08a37 | |
| parent | c413af877ffa8a8c28796c9d156cf40a83e58994 (diff) | |
mm: update comments for struct page.mapping
struct page.mapping can be NULL or points to one object of type
address_space, anon_vma or KSM private structure.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Changbin Du <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | include/linux/mm_types.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index c85f11dafd56..d1b8e8f97fc2 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -48,8 +48,10 @@ 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. See + * PAGE_MAPPING_ANON and + * PAGE_MAPPING_KSM. */ void *s_mem; /* slab first object */ atomic_t compound_mapcount; /* first tail page */ |