linux-kernel - Re: [PATCH v9 07/10] mm: Device exclusive memory access

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Message-ID: <YLjrjJXMP9Y3bvej@t490s>
Date:   Thu, 3 Jun 2021 10:47:40 -0400
From:   Peter Xu <peterx@...hat.com>
To:     Alistair Popple <apopple@...dia.com>
Cc:     Balbir Singh <bsingharora@...il.com>,
        John Hubbard <jhubbard@...dia.com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        nouveau@...ts.freedesktop.org, bskeggs@...hat.com,
        rcampbell@...dia.com, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        hch@...radead.org, jglisse@...hat.com, willy@...radead.org,
        jgg@...dia.com, hughd@...gle.com, Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v9 07/10] mm: Device exclusive memory access

On Thu, Jun 03, 2021 at 09:39:32PM +1000, Alistair Popple wrote:
> Reclaim won't run on the page due to the extra references from the special 
> swap entries.

That sounds reasonable, but I didn't find the point that stops it, probably due
to my limited knowledge on the reclaim code.  Could you elaborate?

-- 
Peter Xu