[git pull] device mapper fixes for 4.16-rc5

[Mike Snitzer <snitzer@redhat.com>]

Hi Linus,

The following changes since commit 661e50bc853209e41a5c14a290ca4decc43cbfd1:

  Linux 4.16-rc4 (2018-03-04 14:54:11 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/for-4.16/dm-fixes-2

for you to fetch changes up to c934edadcc7a64e399942ae34b912939057a77a7:

  dm table: allow upgrade from bio-based to specialized bio-based variant (2018-03-06 20:23:58 -0500)

Please pull, thanks!
Mike

----------------------------------------------------------------
- Fix an uninitialized variable false warning in dm bufio

- Fix DM's passthrough ioctl support to be race free against an
  underlying device being removed.

- Fix corner-case of DM raid resync reporting if/when the raid becomes
  degraded during resync; otherwise automated raid repair will fail.

- A few DM multipath fixes to make non-SCSI optimizations, that were
  introduced during the 4.16 merge, useful for all non-SCSI devices,
  rather than narrowly define this non-SCSI mode in terms of "nvme".
  This allows the removal of "queue_mode nvme" that really didn't need
  to be introduced.  Instead DM core will internalize whether
  nvme-specific IO submission optimizations are doable and DM multipath
  will only do SCSI-specific device handler operations if SCSI is in
  use.

----------------------------------------------------------------
Arnd Bergmann (1):
      dm bufio: avoid false-positive Wmaybe-uninitialized warning

Jonathan Brassow (1):
      dm raid: fix incorrect sync_ratio when degraded

Mike Snitzer (3):
      dm: use blkdev_get rather than bdgrab when issuing pass-through ioctl
      dm mpath: remove unnecessary NVMe branching in favor of scsi_dh checks
      dm table: allow upgrade from bio-based to specialized bio-based variant

Mikulas Patocka (1):
      dm table: fix "nvme" test

 drivers/md/dm-bufio.c | 16 +++++--------
 drivers/md/dm-mpath.c | 66 ++++++++++++++++++++++-----------------------------
 drivers/md/dm-raid.c  |  7 +++---
 drivers/md/dm-table.c | 16 +++++--------
 drivers/md/dm.c       | 35 +++++++++++++++------------
 5 files changed, 65 insertions(+), 75 deletions(-)