[dm-devel] [git pull] device mapper changes for 6.0
Mike Snitzer
snitzer at kernel.org
Mon Aug 1 18:58:49 UTC 2022
Hi Linus,
Stephen had to deal with a couple trivial merge conflicts late in this
cycle, please see: https://lkml.org/lkml/2022/7/27/1819 and
https://lkml.org/lkml/2022/7/28/302
The following changes since commit 22d0c4080fe49299640d9d6c43154c49794c2825:
block: simplify disk_set_independent_access_ranges (2022-06-29 08:36:46 -0600)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/for-6.0/dm-changes
for you to fetch changes up to 9dd1cd3220eca534f2d47afad7ce85f4c40118d8:
dm: fix dm-raid crash if md_handle_request() splits bio (2022-07-28 17:36:30 -0400)
Please pull, thanks.
Mike
----------------------------------------------------------------
- Refactor DM core's mempool allocation so that it clearer by not
being split acorss files.
- Improve DM core's BLK_STS_DM_REQUEUE and BLK_STS_AGAIN handling.
- Optimize DM core's more common bio splitting by eliminating the use
of bio cloning with bio_split+bio_chain. Shift that cloning cost to
the relatively unlikely dm_io requeue case that only occurs during
error handling. Introduces dm_io_rewind() that will clone a bio that
reflects the subset of the original bio that must be requeued.
- Remove DM core's dm_table_get_num_targets() wrapper and audit all
dm_table_get_target() callers.
- Fix potential for OOM with DM writecache target by setting a default
MAX_WRITEBACK_JOBS (set to 256MiB or 1/16 of total system memory,
whichever is smaller).
- Fix DM writecache target's stats that are reported through
DM-specific table info.
- Fix use-after-free crash in dm_sm_register_threshold_callback().
- Refine DM core's Persistent Reservation handling in preparation for
broader work Mike Christie is doing to add compatibility with
Microsoft Windows Failover Cluster.
- Fix various KASAN reported bugs in the DM raid target.
- Fix DM raid target crash due to md_handle_request() bio splitting
that recurses to block core without properly initializing the bio's
bi_dev.
- Fix some code comment typos and fix some Documentation formatting.
----------------------------------------------------------------
Bagas Sanjaya (1):
Documentation: dm writecache: Render status list as list
Christoph Hellwig (2):
dm: unexport dm_get_reserved_rq_based_ios
dm: refactor dm_md_mempool allocation
JeongHyeon Lee (1):
dm verity: fix checkpatch close brace error
Jiang Jian (1):
dm raid: remove redundant "the" in parse_raid_params() comment
Luo Meng (1):
dm thin: fix use-after-free crash in dm_sm_register_threshold_callback
Mauro Carvalho Chehab (1):
Documentation: dm writecache: add blank line before optional parameters
Mike Christie (4):
dm: Allow dm_call_pr to be used for path searches
dm: Start pr_reserve from the same starting path
dm: Fix PR release handling for non All Registrants
dm: Start pr_preempt from the same starting path
Mike Snitzer (5):
dm table: remove dm_table_get_num_targets() wrapper
dm table: audit all dm_table_get_target() callers
dm table: rename dm_target variable in dm_table_add_target()
dm: return early from dm_pr_call() if DM device is suspended
dm: fix dm-raid crash if md_handle_request() splits bio
Mikulas Patocka (8):
dm writecache: set a default MAX_WRITEBACK_JOBS
dm kcopyd: use __GFP_HIGHMEM when allocating pages
dm writecache: return void from functions
dm writecache: count number of blocks read, not number of read bios
dm writecache: count number of blocks written, not number of write bios
dm writecache: count number of blocks discarded, not number of discard bios
dm raid: fix address sanitizer warning in raid_status
dm raid: fix address sanitizer warning in raid_resume
Ming Lei (3):
dm: improve BLK_STS_DM_REQUEUE and BLK_STS_AGAIN handling
dm: add dm_bio_rewind() API to DM core
dm: add two stage requeue mechanism
Steven Lung (1):
dm cache: fix typo in 2 comment blocks
Zhang Jiaming (1):
dm snapshot: fix typo in snapshot_map() comment
.../admin-guide/device-mapper/writecache.rst | 18 +-
drivers/md/Makefile | 2 +-
drivers/md/dm-cache-metadata.h | 2 +-
drivers/md/dm-cache-target.c | 2 +-
drivers/md/dm-core.h | 23 +-
drivers/md/dm-ima.c | 5 +-
drivers/md/dm-io-rewind.c | 166 ++++++++
drivers/md/dm-ioctl.c | 6 +-
drivers/md/dm-kcopyd.c | 2 +-
drivers/md/dm-raid.c | 7 +-
drivers/md/dm-rq.c | 1 -
drivers/md/dm-snap.c | 2 +-
drivers/md/dm-table.c | 318 +++++++-------
drivers/md/dm-thin-metadata.c | 7 +-
drivers/md/dm-thin.c | 4 +-
drivers/md/dm-verity-target.c | 7 +-
drivers/md/dm-writecache.c | 43 +-
drivers/md/dm-zone.c | 7 +-
drivers/md/dm.c | 462 +++++++++++++--------
drivers/md/dm.h | 4 -
include/linux/device-mapper.h | 7 +-
include/uapi/linux/dm-ioctl.h | 4 +-
22 files changed, 694 insertions(+), 405 deletions(-)
create mode 100644 drivers/md/dm-io-rewind.c
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