The patch titled
Subject: mm: update comments for struct page.mapping
has been added to the -mm tree. Its filename is
mm-update-comments-for-struct-pagemapping.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-update-comments-for-struct-pagemapping.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-update-comments-for-struct-pagemapping.patch
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------------------------------------------------------
From: Changbin Du <changbin.du@xxxxxxxxx>
Subject: 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/1506485067-15954-1-git-send-email-changbin.du@xxxxxxxxx
Signed-off-by: Changbin Du <changbin.du@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm_types.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff -puN include/linux/mm_types.h~mm-update-comments-for-struct-pagemapping include/linux/mm_types.h
--- a/include/linux/mm_types.h~mm-update-comments-for-struct-pagemapping
+++ a/include/linux/mm_types.h
@@ -47,8 +47,10 @@ 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 */
_
Patches currently in -mm which might be from changbin.du@xxxxxxxxx are
mm-update-comments-for-struct-pagemapping.patch
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