Magnus Damm <[email protected]> wrote:
>
> On 8/11/05, Andrew Morton <[email protected]> wrote:
> > Mel Gorman <[email protected]> wrote:
> > > The majority of pages I am seeing no longer have page->mapping set. Does
> > > this mean they are in the process of being cleared up?
> >
> > They're just anonymous pages, aren't they? But you said "pages that are
> > being used for inodes". Confused.
>
> I thought page->mapping was used by rmap for both inode-backed and
> anonymous pages. And the PAGE_MAPPING_ANON bit was used to determine
> that page->mapping points to struct anon_vma instead of struct
> address_space.
>
> When is page->mapping NULL?
>
mm.h:page_mapping() handles all that.
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