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Message-ID: <20190628185152.GA9117@lst.de>
Date: Fri, 28 Jun 2019 20:51:52 +0200
From: Christoph Hellwig <hch@....de>
To: Dan Williams <dan.j.williams@...el.com>
Cc: Jason Gunthorpe <jgg@...lanox.com>, Christoph Hellwig <hch@....de>,
Jérôme Glisse <jglisse@...hat.com>,
Ben Skeggs <bskeggs@...hat.com>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
"nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 16/25] device-dax: use the dev_pagemap internal refcount
On Fri, Jun 28, 2019 at 11:44:35AM -0700, Dan Williams wrote:
> There is a problem with the series in CH's tree. It removes the
> ->page_free() callback from the release_pages() path because it goes
> too far and removes the put_devmap_managed_page() call.
release_pages only called put_devmap_managed_page for device public
pages. So I can't see how that is in any way a problem.
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