Linus Torvalds <torvalds@linux-foundation.org> 于 2020年9月26日周六 20:05写道：

> > > +                             page_add_new_anon_rmap(new_page, new,
> addr, false);
> > > +                             rss[mm_counter(new_page)]++;
> > > +                             set_pte_at(dst_mm, addr, dst_pte, pte);
> >
> > Linus's patch had a lru_cache_add_inactive_or_unevictable() here, like
> > wp_page_copy()
>
> Yeah, I do think that is needed so that we have the new page on the
> LRU and it gets properly evicted under memory pressure.
>

Oops, yes we definitely need this one.

Thanks,

>