[GIT PULL 0/7] LightNVM pull request for 4.9

[Matias BjÃrling]

Hi Jens,

A couple of patches for 4.9. We are preparing the pblk target for
upstream, but it will have to wait for at least a cycle before it is
ready.

Geert and Arnd sent two fixes. One check for DMA and another for missing
a device_add check.

Simon added sysfs support to LightNVM. It allows the user to inspect the
geometry of a device through sysfs. As NVMe device driver integrates
with blk-mq, it also exposes the blk-mq sysfs structure.

I added a couple of plumbing patches to enable sysfs. It mainly
refactors nvme and null_blk to take control over nvm_dev and replaces
the gendisk parameter in blk_mq_(un)register_disk() with device and the
associated request queue.

Please pick up.

The patches are available here:

  https://github.com/OpenChannelSSD/linux.git for-jens

Thank you,
Matias

Arnd Bergmann (1):
  lightnvm: propagate device_add() error code

Geert Uytterhoeven (1):
  lightnvm: NVM should depend on HAS_DMA

Matias BjÃrling (4):
  nvme: refactor namespaces to support non-gendisk devices
  null_blk: refactor to support non-gendisk devices
  blk-mq: register device instead of disk
  lightnvm: control life of nvm_dev in driver

Simon A. F. Lund (1):
  lightnvm: expose device geometry through sysfs

 block/blk-mq-sysfs.c         |  17 ++--
 block/blk-sysfs.c            |   4 +-
 drivers/block/null_blk.c     | 128 +++++++++++++++++-----------
 drivers/lightnvm/Kconfig     |   2 +-
 drivers/lightnvm/Makefile    |   2 +-
 drivers/lightnvm/core.c      |  55 +++++-------
 drivers/lightnvm/lightnvm.h  |  35 ++++++++
 drivers/lightnvm/sysfs.c     | 198 +++++++++++++++++++++++++++++++++++++++++++
 drivers/md/dm-rq.c           |   2 +-
 drivers/nvme/host/core.c     | 149 +++++++++++++++++++-------------
 drivers/nvme/host/lightnvm.c |  33 ++++++--
 drivers/nvme/host/nvme.h     |  26 ++++--
 include/linux/blk-mq.h       |   4 +-
 include/linux/lightnvm.h     |  18 ++--
 14 files changed, 498 insertions(+), 175 deletions(-)
 create mode 100644 drivers/lightnvm/lightnvm.h
 create mode 100644 drivers/lightnvm/sysfs.c

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2.1.4