On Tue, 6 Feb 2007, Andrew Morton wrote:

> > @@ -190,18 +191,20 @@ static int show_map_internal(struct seq_file *m, void 
> > *v, struct mem_size_stats
> >  
> >     if (mss)
> >             seq_printf(m,
> > -                      "Size:          %8lu kB\n"
> > -                      "Rss:           %8lu kB\n"
> > -                      "Shared_Clean:  %8lu kB\n"
> > -                      "Shared_Dirty:  %8lu kB\n"
> > -                      "Private_Clean: %8lu kB\n"
> > -                      "Private_Dirty: %8lu kB\n",
> > +                      "Size:           %8lu kB\n"
> > +                      "Rss:            %8lu kB\n"
> > +                      "Shared_Clean:   %8lu kB\n"
> > +                      "Shared_Dirty:   %8lu kB\n"
> > +                      "Private_Clean:  %8lu kB\n"
> > +                      "Private_Dirty:  %8lu kB\n"
> > +                      "Pgs_Referenced: %8li\n",
> 
> I guess we might as well make this %8lu kB as well?
> 

Ah, %8lu would work since it's a count of pages and not a size.

> This is testing the software-referenced bit.  We want to be counting the
> pte-referenced bits (pte_young).
> 
> Hence poking clear_refs should run pte_mkold().
> 
> Perhaps we should also be running ClearPageReferenced and counting pages
> which are pte_young()||PageReferenced.
> 

Ok.
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