[git pull] device mapper changes for 4.15

[Mike Snitzer <snitzer@redhat.com>]

Hi Linus,

The following changes since commit bb176f67090ca54869fc1262c913aa69d2ede070:

  Linux 4.14-rc6 (2017-10-23 06:49:47 -0400)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/for-4.15/dm

for you to fetch changes up to ef7afb3656854de04fe03b0b9b4f3722b5722d8d:

  dm cache: lift common migration preparation code to alloc_migration() (2017-11-10 15:45:07 -0500)

Please pull, thanks!
Mike

----------------------------------------------------------------
- A few conversions from atomic_t to ref_count_t

- A DM core fix for a race during device destruction that could result
  in a BUG_ON.

- A stable@ fix for a DM cache race condition that could lead to data
  corruption when operating in writeback mode (writethrough is default)

- Various DM cache cleanups and improvements

- Add DAX support to the DM log-writes target

- A fix for the DM zoned target's ability to deal with the last zone of
  the drive being smaller than all others.

- A stable@ DM crypt and DM integrity fix for a negative check that was
  to restrictive (prevented slab debug with XFS ontop of DM crypt from
  working).

- A DM raid target fix for a panic that can occur when forcing a raid to
  sync.

----------------------------------------------------------------
Damien Le Moal (1):
      dm zoned: ignore last smaller runt zone

Elena Reshetova (3):
      dm: convert dm_dev_internal.count from atomic_t to refcount_t
      dm: convert table_device.count from atomic_t to refcount_t
      dm cache: convert dm_cache_metadata.ref_count from atomic_t to refcount_t

Heinz Mauelshagen (1):
      dm raid: fix panic when attempting to force a raid to sync

Hou Tao (1):
      dm: fix race between dm_get_from_kobject() and __dm_destroy()

Joe Thornber (7):
      dm cache: fix race condition in the writeback mode overwrite_bio optimisation
      dm cache policy smq: handle races with queuing background_work
      dm cache policy smq: take origin idle status into account when queuing writebacks
      dm cache background tracker: limit amount of background work that may be issued at once
      dm cache policy smq: change max background work from 10240 to 4096 blocks
      dm cache policy smq: allocate cache blocks in order
      dm cache: remove usused deferred_cells member from struct cache

Jérémy Lefaure (1):
      dm space map metadata: use ARRAY_SIZE

Mike Snitzer (6):
      dm cache: pass cache structure to mode functions
      dm cache: submit writethrough writes in parallel to origin and cache
      dm cache: remove all obsolete writethrough-specific code
      dm cache: simplify get_per_bio_data() by removing data_size argument
      dm: small cleanup in dm_get_md()
      dm cache: lift common migration preparation code to alloc_migration()

Mikulas Patocka (3):
      dm: allocate struct mapped_device with kvzalloc
      dm crypt: allow unaligned bv_offset
      dm integrity: allow unaligned bv_offset

Ross Zwisler (2):
      dm log writes: add support for inline data buffers
      dm log writes: add support for DAX

 drivers/md/dm-cache-background-tracker.c           |  18 +-
 drivers/md/dm-cache-metadata.c                     |   9 +-
 drivers/md/dm-cache-policy-smq.c                   |  42 ++-
 drivers/md/dm-cache-target.c                       | 326 +++++++++------------
 drivers/md/dm-core.h                               |   3 +-
 drivers/md/dm-crypt.c                              |   4 +-
 drivers/md/dm-integrity.c                          |   2 +-
 drivers/md/dm-log-writes.c                         | 175 ++++++++++-
 drivers/md/dm-raid.c                               |  21 +-
 drivers/md/dm-table.c                              |   6 +-
 drivers/md/dm-zoned-target.c                       |  13 +-
 drivers/md/dm.c                                    |  45 +--
 drivers/md/dm.h                                    |   3 +-
 drivers/md/persistent-data/dm-space-map-metadata.c |   3 +-
 14 files changed, 408 insertions(+), 262 deletions(-)