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Date: Fri, 10 Nov 2017 10:06:58 +0100
From: Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 13/15] mm, devmap: introduce CONFIG_DEVMAP_MANAGED_PAGES
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To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-nvdimm@lists.01.org, Michal Hocko <mhocko@suse.com>, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-mm@kvack.org, =?iso-8859-1?B?Suly9G1l?= Glisse <jglisse@redhat.com>, linux-fsdevel@vger.kernel.org, akpm@linux-foundation.org, hch@lst.de

On Tue, Oct 31, 2017 at 04:22:46PM -0700, Dan Williams wrote:
> Combine the now three use cases of page-idle callbacks for ZONE_DEVICE
> memory into a common selectable symbol.

Very sparse changelog.  I understand the Kconfig bit, but it also seems to
introduce new static key functionality that isn't explained at all.