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.
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