linux-kernel - Re: mmotm 2020-07-27-18-18 uploaded (mm/page

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Message-ID: <20200729101807-mutt-send-email-mst@kernel.org>
Date:   Wed, 29 Jul 2020 10:18:30 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Randy Dunlap <rdunlap@...radead.org>, broonie@...nel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-next@...r.kernel.org, mhocko@...e.cz,
        mm-commits@...r.kernel.org, Jason Wang <jasowang@...hat.com>,
        David Hildenbrand <david@...hat.com>
Subject: Re: mmotm 2020-07-27-18-18 uploaded (mm/page_alloc.c)

On Tue, Jul 28, 2020 at 03:31:43PM -0700, Andrew Morton wrote:
> On Wed, 29 Jul 2020 08:20:53 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> 
> > Hi Andrew,
> > 
> > On Tue, 28 Jul 2020 14:55:53 -0700 Andrew Morton <akpm@...ux-foundation.org> wrote:
> > > config CONTIG_ALLOC
> > >         def_bool (MEMORY_ISOLATION && COMPACTION) || CMA
> > > 
> > > says this is an improper combination.  And `make oldconfig' fixes it up.
> > > 
> > > What's happening here?
> > 
> > CONFIG_VIRTIO_MEM selects CONFIG_CONTIG_ALLOC ...
> 
> Argh, select strikes again.
> 
> So I guess VIRTIO_MEM should also select COMPACTION?

+Cc the maintainer.

-- 
MST