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Date: Sat, 16 Oct 2021 17:39:15 +0100
From: Matthew Wilcox <willy@infradead.org>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
	Alex Sierra <alex.sierra@amd.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	"Kuehling, Felix" <Felix.Kuehling@amd.com>,
	Linux MM <linux-mm@kvack.org>,
	Ralph Campbell <rcampbell@nvidia.com>,
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	Vishal Verma <vishal.l.verma@intel.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Linux NVDIMM <nvdimm@lists.linux.dev>
Subject: Re: [PATCH v1 2/2] mm: remove extra ZONE_DEVICE struct page refcount
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On Sat, Oct 16, 2021 at 12:44:50PM -0300, Jason Gunthorpe wrote:
> Assuming changing FSDAX is hard.. How would DAX people feel about just
> deleting the PUD/PMD support until it can be done with compound pages?

I think there are customers who would find that an unacceptable answer :-)