[GIT PULL] libnvdimm for 5.3

[Dan Williams]

Hi Linus, please pull from:

  git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
tags/libnvdimm-for-5.3

...to receive primarily just the virtio_pmem driver for v5.3-rc1. The
lateness is attributed to me being out last week, and a last minute
regression hunt in a pending fix / rework of libnvdimm locking. Those
fixes can wait to post-rc1.

These commits have been in multiple -next releases, and uncovered a
late sparse fixup that is appended. The touches to ext4 and xfs have
received acks. Ted's ack is here [1], it arrived after I cut the
branch. Mike reviewed the device-mapper touches.

[1]: https://lore.kernel.org/lkml/20190707163415.GA19775@xxxxxxx/

---

The following changes since commit 9e0babf2c06c73cda2c0cd37a1653d823adb40ec:

  Linux 5.2-rc5 (2019-06-16 08:49:45 -1000)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
tags/libnvdimm-for-5.3

for you to fetch changes up to 8c2e408e73f735d2e6e8b43f9b038c9abb082939:

  virtio_pmem: fix sparse warning (2019-07-16 19:44:26 -0700)

----------------------------------------------------------------
- virtio_pmem: The new virtio_pmem facility introduces a paravirtualized
  persistent memory device that allows a guest VM to use DAX mechanisms to
  access a host-file with host-page-cache. It arranges for MAP_SYNC to
  be disabled and instead triggers a host fsync() when a 'write-cache
  flush' command is sent to the virtual disk device.

- Miscellaneous small fixups.

----------------------------------------------------------------
Andy Shevchenko (1):
      libnvdimm, namespace: Drop uuid_t implementation detail

Pankaj Gupta (8):
      libnvdimm: nd_region flush callback support
      virtio-pmem: Add virtio pmem driver
      libnvdimm: add dax_dev sync flag
      dm: enable synchronous dax
      dax: check synchronous mapping is supported
      ext4: disable map_sync for async flush
      xfs: disable map_sync for async flush
      virtio_pmem: fix sparse warning

 drivers/acpi/nfit/core.c         |   4 +-
 drivers/dax/bus.c                |   2 +-
 drivers/dax/super.c              |  19 +++++-
 drivers/md/dm-table.c            |  24 ++++++--
 drivers/md/dm.c                  |   5 +-
 drivers/md/dm.h                  |   5 +-
 drivers/nvdimm/Makefile          |   1 +
 drivers/nvdimm/claim.c           |   6 +-
 drivers/nvdimm/namespace_devs.c  |   8 +--
 drivers/nvdimm/nd.h              |   1 +
 drivers/nvdimm/nd_virtio.c       | 125 +++++++++++++++++++++++++++++++++++++++
 drivers/nvdimm/pmem.c            |  18 ++++--
 drivers/nvdimm/region_devs.c     |  33 ++++++++++-
 drivers/nvdimm/virtio_pmem.c     | 122 ++++++++++++++++++++++++++++++++++++++
 drivers/nvdimm/virtio_pmem.h     |  55 +++++++++++++++++
 drivers/s390/block/dcssblk.c     |   2 +-
 drivers/virtio/Kconfig           |  11 ++++
 fs/ext4/file.c                   |  10 ++--
 fs/xfs/xfs_file.c                |   9 ++-
 include/linux/dax.h              |  41 ++++++++++++-
 include/linux/libnvdimm.h        |  10 +++-
 include/uapi/linux/virtio_ids.h  |   1 +
 include/uapi/linux/virtio_pmem.h |  34 +++++++++++
 23 files changed, 508 insertions(+), 38 deletions(-)
 create mode 100644 drivers/nvdimm/nd_virtio.c
 create mode 100644 drivers/nvdimm/virtio_pmem.c
 create mode 100644 drivers/nvdimm/virtio_pmem.h
 create mode 100644 include/uapi/linux/virtio_pmem.h