Messages in this thread | | | Date | Tue, 26 Sep 2017 16:30:27 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] mm: update comments for struct page.mapping |
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On Tue, 26 Sep 2017 15:14:17 +0800 changbin.du@intel.com wrote:
> From: Changbin Du <changbin.du@intel.com> > > The struct page.mapping can NULL or points to one object of type > address_space, anon_vma or KSM private structure. > > ... > > --- 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 */
Why did you remove the (useful) reference to PAGE_MAPPING_ANON?
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