On (02/03/16 17:02), Johannes Weiner wrote:
> On Wed, Feb 03, 2016 at 01:19:39PM -0800, Andrew Morton wrote:
> > Yup. I turned it into a fix against
> > mm-workingset-per-cgroup-cache-thrash-detection.patch, which is where
> > the bug was added. And I did the goto thing instead, so the final
> > result will be
> >
> > void workingset_activation(struct page *page)
> > {
> > struct lruvec *lruvec;
> >
> > lock_page_memcg(page);
> > /*
> > * Filter non-memcg pages here, e.g. unmap can call
> > * mark_page_accessed() on VDSO pages.
> > *
> > * XXX: See workingset_refault() - this should return
> > * root_mem_cgroup even for !CONFIG_MEMCG.
> > */
> > if (!mem_cgroup_disabled() && !page_memcg(page))
> > goto out;
> > lruvec = mem_cgroup_zone_lruvec(page_zone(page), page_memcg(page));
> > atomic_long_inc(&lruvec->inactive_age);
> > out:
> > unlock_page_memcg(page);
> > }
>
> LGTM, thank you.
Thanks!
-ss
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