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 @@ -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 */ _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
