On Tue, Jun 09 2020 at 9:59am -0400, Mike Snitzer <snitzer@xxxxxxxxxx> wrote: > [resending as v3 due to my From: email addr in v2 being inexplicably wrong] The pr-tracker-bot responded to that email address and I missed it: https://www.redhat.com/archives/dm-devel/2020-June/msg00067.html I should've just looked at your tree. Thanks for your quick pull. Sorry for the noise. Mike > > Hi Linus, > > I had some miscommunication with Mikulas on his -ENOMEM sleep and retry > changes for dm-crypt and dm-integrity, he no longer thinks them > appropriate: https://www.redhat.com/archives/dm-devel/2020-June/msg00061.html > So I dropped them via rebase and updated the tag (to avoid any > potential for linux-stable churn due to Mikulas' commits having > cc'd linux-stable). Hope that was the correct way forward... > > For the following changes there is one dm-zoned-metadata.c conflict that > linux-next has been carrying for a while. See commit d77e96f277 ("Merge > remote-tracking branch 'device-mapper/for-next'") from next-20200605. > It resolves conflict from linux-block's commit 9398554fb3 ("block: > remove the_error_sector argument to blkdev_issue_flush"). > > The following changes since commit 2ef96a5bb12be62ef75b5828c0aab838ebb29cb8: > > Linux 5.7-rc5 (2020-05-10 15:16:58 -0700) > > are available in the Git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/for-5.8/dm-changes > > for you to fetch changes up to 64611a15ca9da91ff532982429c44686f4593b5f: > > dm crypt: avoid truncating the logical block size (2020-06-05 14:59:59 -0400) > > Please pull, thanks! > Mike > > ---------------------------------------------------------------- > - Largest change for this cycle is the DM zoned target's metadata > version 2 feature that adds support for pairing regular block > devices with a zoned device to ease performance impact associated > with finite random zones of zoned device. Changes came in 3 > batches: first prepared for and then added the ability to pair a > single regular block device, second was a batch of fixes to improve > zoned's reclaim heuristic, third removed the limitation of only > adding a single additional regular block device to allow many > devices. Testing has shown linear scaling as more devices are > added. > > - Add new emulated block size (ebs) target that emulates a smaller > logical_block_size than a block device supports. Primary use-case > is to emulate "512e" devices that have 512 byte logical_block_size > and 4KB physical_block_size. This is useful to some legacy > applications otherwise wouldn't be ablee to be used on 4K devices > because they depend on issuing IO in 512 byte granularity. > > - Add discard interfaces to DM bufio. First consumer of the interface > is the dm-ebs target that makes heavy use of dm-bufio. > > - Fix DM crypt's block queue_limits stacking to not truncate > logic_block_size. > > - Add Documentation for DM integrity's status line. > > - Switch DMDEBUG from a compile time config option to instead use > dynamic debug via pr_debug. > > - Fix DM multipath target's hueristic for how it manages > "queue_if_no_path" state internally. DM multipath now avoids > disabling "queue_if_no_path" unless it is actually needed (e.g. in > response to configure timeout or explicit "fail_if_no_path" > message). This fixes reports of spurious -EIO being reported back > to userspace application during fault tolerance testing with an NVMe > backend. Added various dynamic DMDEBUG messages to assist with > debugging queue_if_no_path in the future. > > - Add a new DM multipath "Historical Service Time" Path Selector. > > - Fix DM multipath's dm_blk_ioctl() to switch paths on IO error. > > - Improve DM writecache target performance by using explicit > cache flushing for target's single-threaded usecase and a small > cleanup to remove unnecessary test in persistent_memory_claim. > > - Other small cleanups in DM core, dm-persistent-data, and DM integrity. > > ---------------------------------------------------------------- > Dmitry Baryshkov (1): > dm crypt: support using encrypted keys > > Eric Biggers (1): > dm crypt: avoid truncating the logical block size > > Gabriel Krisman Bertazi (1): > dm mpath: pass IO start time to path selector > > Gustavo A. R. Silva (1): > dm: replace zero-length array with flexible-array > > Hannes Reinecke (38): > dm zoned: add 'status' callback > dm zoned: add 'message' callback > dm zoned: store zone id within the zone structure and kill dmz_id() > dm zoned: use array for superblock zones > dm zoned: store device in struct dmz_sb > dm zoned: move fields from struct dmz_dev to dmz_metadata > dm zoned: introduce dmz_metadata_label() to format device name > dm zoned: Introduce dmz_dev_is_dying() and dmz_check_dev() > dm zoned: remove 'dev' argument from reclaim > dm zoned: replace 'target' pointer in the bio context > dm zoned: use dmz_zone_to_dev() when handling metadata I/O > dm zoned: add metadata logging functions > dm zoned: Reduce logging output on startup > dm zoned: ignore metadata zone in dmz_alloc_zone() > dm zoned: metadata version 2 > dm: use dynamic debug instead of compile-time config option > dm zoned: remove spurious newlines from debugging messages > dm zoned: return NULL if dmz_get_zone_for_reclaim() fails to find a zone > dm zoned: separate random and cache zones > dm zoned: reclaim random zones when idle > dm zoned: start reclaim with sequential zones > dm zoned: terminate reclaim on congestion > dm zoned: remove leftover hunk for switching to sequential zones > dm zoned: add debugging message for reading superblocks > dm zoned: avoid unnecessary device recalulation for secondary superblock > dm zoned: improve logging messages for reclaim > dm zoned: add a 'reserved' zone flag > dm zoned: convert to xarray > dm zoned: allocate temporary superblock for tertiary devices > dm zoned: add device pointer to struct dm_zone > dm zoned: add metadata pointer to struct dmz_dev > dm zoned: per-device reclaim > dm zoned: move random and sequential zones into struct dmz_dev > dm zoned: support arbitrary number of devices > dm zoned: allocate zone by device index > dm zoned: select reclaim zone based on device index > dm zoned: prefer full zones for reclaim > dm zoned: check superblock location > > Heinz Mauelshagen (2): > dm: add emulated block size target > dm ebs: pass discards down to underlying device > > Khazhismel Kumykov (1): > dm mpath: add Historical Service Time Path Selector > > Martin Wilck (1): > dm mpath: switch paths in dm_blk_ioctl() code path > > Mike Snitzer (5): > dm: use DMDEBUG macros now that they use pr_debug variants > dm mpath: simplify __must_push_back > dm mpath: restrict queue_if_no_path state machine > dm mpath: enhance queue_if_no_path debugging > dm mpath: add DM device name to Failing/Reinstating path log messages > > Mikulas Patocka (8): > dm bufio: implement discard > dm writecache: remove superfluous test in persistent_memory_claim > dm writecache: improve performance on DDR persistent memory (Optane) > dm bufio: delete unused and inefficient dm_bufio_discard_buffers > dm integrity: add status line documentation > dm bufio: clean up rbtree block ordering > dm bufio: introduce forget_buffer_locked > dm ebs: use dm_bufio_forget_buffers > > Nathan Chancellor (1): > dm zoned: Avoid 64-bit division error in dmz_fixup_devices > > YueHaibing (1): > dm integrity: remove set but not used variables > > Zhiqiang Liu (1): > dm persistent data: switch exit_ro_spine to return void > > Documentation/admin-guide/device-mapper/dm-ebs.rst | 51 + > .../admin-guide/device-mapper/dm-integrity.rst | 8 + > .../admin-guide/device-mapper/dm-zoned.rst | 62 +- > drivers/md/Kconfig | 20 + > drivers/md/Makefile | 3 + > drivers/md/dm-bufio.c | 109 +- > drivers/md/dm-crypt.c | 80 +- > drivers/md/dm-ebs-target.c | 471 +++++++++ > drivers/md/dm-historical-service-time.c | 561 +++++++++++ > drivers/md/dm-integrity.c | 6 +- > drivers/md/dm-log-writes.c | 2 +- > drivers/md/dm-mpath.c | 123 ++- > drivers/md/dm-path-selector.h | 2 +- > drivers/md/dm-queue-length.c | 2 +- > drivers/md/dm-raid.c | 2 +- > drivers/md/dm-raid1.c | 2 +- > drivers/md/dm-service-time.c | 2 +- > drivers/md/dm-stats.c | 2 +- > drivers/md/dm-stripe.c | 2 +- > drivers/md/dm-switch.c | 2 +- > drivers/md/dm-writecache.c | 42 +- > drivers/md/dm-zoned-metadata.c | 1046 +++++++++++++++----- > drivers/md/dm-zoned-reclaim.c | 210 ++-- > drivers/md/dm-zoned-target.c | 463 ++++++--- > drivers/md/dm-zoned.h | 113 ++- > drivers/md/dm.c | 11 +- > drivers/md/persistent-data/dm-btree-internal.h | 4 +- > drivers/md/persistent-data/dm-btree-spine.c | 6 +- > include/linux/device-mapper.h | 9 +- > include/linux/dm-bufio.h | 12 + > 30 files changed, 2779 insertions(+), 649 deletions(-) > create mode 100644 Documentation/admin-guide/device-mapper/dm-ebs.rst > create mode 100644 drivers/md/dm-ebs-target.c > create mode 100644 drivers/md/dm-historical-service-time.c
