Merge tag 'libnvdimm-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:

 - Improve the efficiency and performance of reading nvdimm-namespace
   labels. Reduce the amount of label data read at driver load time by a
   few orders of magnitude. Reduce heavyweight call-outs to
   platform-firmware routines.

 - Handle media errors located in the 'struct page' array stored on a
   persistent memory namespace. Let the kernel clear these errors rather
   than an awkward userspace workaround.

 - Fix Address Range Scrub (ARS) completion tracking. Correct occasions
   where the kernel indicates completion of ARS before submission.

 - Fix asynchronous device registration reference counting.

 - Add support for reporting an nvdimm dirty-shutdown-count via sysfs.

 - Fix various small libnvdimm core and uapi issues.

* tag 'libnvdimm-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
  acpi, nfit: Further restrict userspace ARS start requests
  acpi, nfit: Fix Address Range Scrub completion tracking
  UAPI: ndctl: Remove use of PAGE_SIZE
  UAPI: ndctl: Fix g++-unsupported initialisation in headers
  tools/testing/nvdimm: Populate dirty shutdown data
  acpi, nfit: Collect shutdown status
  acpi, nfit: Introduce nfit_mem flags
  libnvdimm, label: Fix sparse warning
  nvdimm: Use namespace index data to reduce number of label reads needed
  nvdimm: Split label init out from the logic for getting config data
  nvdimm: Remove empty if statement
  nvdimm: Clarify comment in sizeof_namespace_index
  nvdimm: Sanity check labeloff
  libnvdimm, dimm: Maximize label transfer size
  libnvdimm, pmem: Fix badblocks population for 'raw' namespaces
  libnvdimm, namespace: Drop the repeat assignment for variable dev->parent
  libnvdimm, region: Fail badblocks listing for inactive regions
  libnvdimm, pfn: during init, clear errors in the metadata area
  libnvdimm: Set device node in nd_device_register
  libnvdimm: Hold reference on parent while scheduling async init
  ...

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