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(-)
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