device mapper changes for 5.12

Hi Linus,

These DM changes happen to be based on linux-block from a few weeks ago (but an expected DM dependency on block turned out to not be needed). And the few block/keyslot-manager changes are accompanied by Jens' Acked-by.

The following changes since commit 8358c28a5d44bf0223a55a2334086c3707bb4185:

block: fix memory leak of bvec (2021-02-02 08:57:56 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/for-5.12/dm-changes

for you to fetch changes up to a666e5c05e7c4aaabb2c5d58117b0946803d03d2:

dm: fix deadlock when swapping to encrypted device (2021-02-11 09:45:28 -0500)

Please pull, thanks.
Mike

----------------------------------------------------------------
- Fix DM integrity's HMAC support to provide enhanced security of internal_hash and journal_mac capabilities.

- Various DM writecache fixes to address performance, fix table output to match what was provided at table creation, fix writing beyond end of device when shrinking underlying data device, and a couple other small cleanups.

- Add DM crypt support for using trusted keys.

- Fix deadlock when swapping to DM crypt device by throttling number of in-flight REQ_SWAP bios. Implemented in DM core so that other bio-based targets can opt-in by setting ti->limit_swap_bios.

- Fix various inverted logic bugs in the .iterate_devices callout functions that are used to assess if specific feature or capability is supported across all devices being combined/stacked by DM.

- Fix DM era target bugs that exposed users to lost writes or memory leaks.

- Add DM core support for passing through inline crypto support of underlying devices. Includes block/keyslot-manager changes that enable extending this support to DM.

- Various small fixes and cleanups (spelling fixes, front padding calculation cleanup, cleanup conditional zoned support in targets, etc).

----------------------------------------------------------------
Ahmad Fatoum (2):
dm crypt: replaced #if defined with IS_ENABLED dm crypt: support using trusted keys

Colin Ian King (1):

      dm integrity: fix spelling mistake "flusing" -> "flushing"

Geert Uytterhoeven (1):
dm crypt: Spelling s/cihper/cipher/

Jeffle Xu (5):
dm: cleanup of front padding calculation
dm table: fix iterate_devices based device capability checks dm table: fix DAX iterate_devices based device capability checks dm table: fix zoned iterate_devices based device capability checks dm table: remove needless request_queue NULL pointer checks

Jinoh Kang (1):
dm persistent data: fix return type of shadow_root()

Mike Snitzer (2):
dm writecache: use bdev_nr_sectors() instead of open-coded equivalent
dm: simplify target code conditional on CONFIG_BLK_DEV_ZONED

Mikulas Patocka (5):
dm integrity: introduce the "fix_hmac" argument
dm writecache: fix performance degradation in ssd mode
dm writecache: return the exact table values that were set dm writecache: fix writing beyond end of underlying device when shrinking
dm: fix deadlock when swapping to encrypted device

Nikos Tsironis (7):
dm era: Recover committed writeset after crash
dm era: Update in-core bitset after committing the metadata dm era: Reinitialize bitset cache before digesting a new writeset dm era: Verify the data block size hasn't changed
dm era: Fix bitset memory leaks
dm era: Use correct value size in equality function of writeset tree dm era: only resize metadata in preresume

Satya Tangirala (5):
block/keyslot-manager: Introduce passthrough keyslot manager block/keyslot-manager: Introduce functions for device mapper support
dm: add support for passing through inline crypto support
dm: support key eviction from keyslot managers of underlying devices
dm: set DM_TARGET_PASSES_CRYPTO feature for some targets

Tian Tao (1):
dm writecache: fix unnecessary NULL check warnings

Tom Rix (1):
dm dust: remove h from printk format specifier

 .../admin-guide/device-mapper/dm-crypt.rst         |   2 +-
 .../admin-guide/device-mapper/dm-integrity.rst     |  11 +
 block/blk-crypto.c                                 |   1 +
 block/keyslot-manager.c                            | 146 ++++++++
 drivers/md/Kconfig                                 |   1 +
 drivers/md/dm-core.h                               |   9 +
 drivers/md/dm-crypt.c                              |  39 +-
 drivers/md/dm-dust.c                               |   2 +-
 drivers/md/dm-era-target.c                         |  93 +++--
 drivers/md/dm-flakey.c                             |   6 +-
 drivers/md/dm-integrity.c                          | 140 +++++++-
 drivers/md/dm-linear.c                             |   8 +-
 drivers/md/dm-table.c                              | 399 +++++++++++++++------
 drivers/md/dm-writecache.c                         |  80 +++--
 drivers/md/dm.c                                    |  96 ++++-
 drivers/md/dm.h                                    |   2 +-
 drivers/md/persistent-data/dm-btree-internal.h     |   2 +-
 drivers/md/persistent-data/dm-btree-spine.c        |   2 +-
 include/linux/device-mapper.h                      |  32 +-
 include/linux/keyslot-manager.h                    |  11 +
 include/uapi/linux/dm-ioctl.h                      |   4 +-
 21 files changed, 868 insertions(+), 218 deletions(-)

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