mm: update comments for struct page.mapping
authorChangbin Du <changbin.du@intel.com>
Thu, 16 Nov 2017 01:32:53 +0000 (17:32 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 16 Nov 2017 02:21:02 +0000 (18:21 -0800)
commit41710443f790b5f7f5305eba99dacce88e259f4c
treef5d90cb7f7e1bccb1f6080c8229d5487c1b08a37
parentc413af877ffa8a8c28796c9d156cf40a83e58994
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@intel.com
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/mm_types.h