Re: How to reclaim inode pages on demand

[Andrew Morton]

Magnus Damm <magnus.damm@xxxxxxxxx> wrote:
>
> On 8/11/05, Andrew Morton <akpm@xxxxxxxx> wrote:
> > Mel Gorman <mel@xxxxxxxxx> 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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