memremap: remove support for external pgmap refcounts
authorChristoph Hellwig <hch@lst.de>
Thu, 28 Oct 2021 15:10:17 +0000 (17:10 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 17 Aug 2022 12:23:43 +0000 (14:23 +0200)
commitd18a9085654b2d94c2bc7a10d0282488dc4fce5f
tree929792ee2134d3d498c9cad12cde961bfb689a00
parentd1e0ceeec04ab4ae4d83f7b89db3803f51ee4ae9
memremap: remove support for external pgmap refcounts

[ Upstream commit b80892ca022e9eb484771a66eb68e12364695a2a ]

No driver is left using the external pgmap refcount, so remove the
code to support it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20211028151017.50234-1-hch@lst.de
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/pci/p2pdma.c
include/linux/memremap.h
mm/memremap.c
tools/testing/nvdimm/test/iomap.c