[dm-devel] [git pull] device mapper changes for 5.19

[Mike Snitzer]

Hi Linus,

These changes build on Jens' for-5.19 block tree because of various
block changes that impacted DM and/or prereqs for these DM changes.

The following changes since commit 069adbac2cd85ae00252da6c5576cbf9b9d9ba6e:

  block: improve the error message from bio_check_eod (2022-05-04 18:30:10 -0600)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/for-5.19/dm-changes

for you to fetch changes up to ca522482e3eafd005b8d4e8b1331c911505a58d5:

  dm: pass NULL bdev to bio_alloc_clone (2022-05-11 13:58:52 -0400)

Please pull, thanks.
Mike

----------------------------------------------------------------
- Enable DM core bioset's per-cpu bio cache if QUEUE_FLAG_POLL
  set. This change improves DM's hipri bio polling (REQ_POLLED)
  performance by 7 - 20% depending on the system.

- Update DM core to use jump_labels to further reduce cost of unlikely
  branches for zoned block devices, dm-stats and swap_bios throttling.

- Various DM core changes to reduce bio-based DM overhead and simplify
  IO accounting.

- Fundamental DM core improvements to dm_io reference counting and the
  elimination of using bio_split()+bio_chain() -- instead DM's
  bio-based IO accounting is updated to account that a split occurred.

- Improve DM core's abnormal bio processing to do less work.

- Improve DM core's hipri polling support to use a single list rather
  than an hlist.

- Update DM core to pass NULL bdev to bio_alloc_clone() so that
  initialization that isn't useful for DM can be elided.

- Add cond_resched to DM stats' various loops that loop over all
  entries.

- Fix incorrect error code return from DM integrity's constructor.

- Make DM crypt's printing of the key constant-time.

- Update bio-based DM multipath to provide high-resolution timer to
  the Historical Service Time (HST) path selector.

----------------------------------------------------------------
Dan Carpenter (1):
      dm integrity: fix error code in dm_integrity_ctr()

Gabriel Krisman Bertazi (1):
      dm mpath: provide high-resolution timer to HST for bio-based

Guo Zhengkui (1):
      dm cache metadata: remove unnecessary variable in __dump_mapping

Mike Snitzer (14):
      dm: conditionally enable BIOSET_PERCPU_CACHE for dm_io bioset
      dm: factor out dm_io_set_error and __dm_io_dec_pending
      dm: simplify dm_io access in dm_split_and_process_bio
      dm: simplify dm_start_io_acct
      dm: mark various branches unlikely
      dm: add local variables to clone_endio and __map_bio
      dm: move hot dm_io members to same cacheline as dm_target_io
      dm: introduce dm_{get,put}_live_table_bio called from dm_submit_bio
      dm: conditionally enable branching for less used features
      dm: simplify basic targets
      dm: use bio_sectors in dm_aceept_partial_bio
      dm: simplify bio-based IO accounting further
      dm: improve abnormal bio processing
      dm: pass NULL bdev to bio_alloc_clone

Mikulas Patocka (2):
      dm stats: add cond_resched when looping over entries
      dm crypt: make printing of the key constant-time

Ming Lei (7):
      dm: don't pass bio to __dm_start_io_acct and dm_end_io_acct
      dm: pass dm_io instance to dm_io_acct directly
      dm: switch to bdev based IO accounting interfaces
      dm: improve bio splitting and associated IO accounting
      dm: don't grab target io reference in dm_zone_map_bio
      dm: improve dm_io reference counting
      dm: put all polled dm_io instances into a single list

 drivers/md/dm-cache-metadata.c             |   3 +-
 drivers/md/dm-core.h                       |  38 +-
 drivers/md/dm-crypt.c                      |  14 +-
 drivers/md/dm-delay.c                      |   3 +-
 drivers/md/dm-flakey.c                     |   4 +-
 drivers/md/dm-integrity.c                  |   2 -
 drivers/md/dm-linear.c                     |  11 +-
 drivers/md/dm-mpath.c                      |   8 +-
 drivers/md/dm-path-selector.h              |  15 +
 drivers/md/dm-ps-historical-service-time.c |   1 +
 drivers/md/dm-stats.c                      |  11 +
 drivers/md/dm-table.c                      |  16 +-
 drivers/md/dm-zone.c                       |  10 -
 drivers/md/dm.c                            | 556 +++++++++++++++++------------
 drivers/md/dm.h                            |   4 +-
 15 files changed, 409 insertions(+), 287 deletions(-)