linux-kernel - Re: [PATCH 4/6] mm/memcontrol: allow to uncharge page without using page->lru field

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Message-ID: <1500282655.8256.7.camel@gmail.com>
Date:   Mon, 17 Jul 2017 19:10:55 +1000
From:   Balbir Singh <bsingharora@...il.com>
To:     Jérôme Glisse <jglisse@...hat.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:     John Hubbard <jhubbard@...dia.com>,
        David Nellans <dnellans@...dia.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Michal Hocko <mhocko@...nel.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        cgroups@...r.kernel.org
Subject: Re: [PATCH 4/6] mm/memcontrol: allow to uncharge page without using
 page->lru field

On Thu, 2017-07-13 at 17:15 -0400, Jérôme Glisse wrote:
> HMM pages (private or public device pages) are ZONE_DEVICE page and
> thus you can not use page->lru fields of those pages. This patch
> re-arrange the uncharge to allow single page to be uncharge without
> modifying the lru field of the struct page.
> 
> There is no change to memcontrol logic, it is the same as it was
> before this patch.
> 
> Signed-off-by: Jérôme Glisse <jglisse@...hat.com>
> Cc: Johannes Weiner <hannes@...xchg.org>
> Cc: Michal Hocko <mhocko@...nel.org>
> Cc: Vladimir Davydov <vdavydov.dev@...il.com>
> Cc: cgroups@...r.kernel.org
> ---

Acked-by: Balbir Singh <bsingharora@...il.com>