> On Tue, 26 Apr 2011 16:59:19 +0900 (JST)
> KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> wrote:
>
> > @@ -75,3 +76,19 @@ void __put_swap_token(struct mm_struct *mm)
> > swap_token_mm = NULL;
> > spin_unlock(&swap_token_lock);
> > }
> > +
> > +int has_swap_token_memcg(struct mm_struct *mm, struct mem_cgroup *memcg)
> > +{
> > + if (memcg) {
> > + struct mem_cgroup *swap_token_memcg;
> > +
> > + /*
> > + * memcgroup reclaim can disable swap token only if token task
> > + * is in the same cgroup.
> > + */
> > + swap_token_memcg = try_get_mem_cgroup_from_mm(swap_token_mm);
> > + return ((mm == swap_token_mm) && (memcg == swap_token_memcg));
> > + } else
> > + return (mm == swap_token_mm);
> > +}
>
> Seems to be missing a css_put()?
Yes! Please drop this one. I'll rework it at this weekend.
Thank you for the finding!
>
> Either I'm mistaken or that's a bug. Perhaps neither of these would
> have happened if we'd bothered to document
> try_get_mem_cgroup_from_mm().
>
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