Merge tag 'for-5.7/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/devic...

Pull device mapper updates from Mike Snitzer:

 - Add DM writecache "cleaner" policy feature that allows cache to be
   flushed while userspace monitors for completion to then discommision
   use of caching.

 - Optimize DM writecache superblock writing and also yield CPU while
   initializing writecache on large PMEM devices to avoid CPU stalls.

 - Various fixes to DM integrity target while preparing for the ability
   to resize a DM integrity device. In addition to resize support, add
   optional discard support with the "allow_discards" feature.

 - Fix DM clone target's discard handling and overflow bugs which could
   cause data corruption.

 - Fix memory leak in destructor for DM verity FEC support.

 - Fix DM zoned target's redundant increment of nr_rnd_zones.

 - Small cleanup in DM crypt to use crypt_integrity_aead() helper.

* tag 'for-5.7/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions()
  dm clone: Add missing casts to prevent overflows and data corruption
  dm clone: Add overflow check for number of regions
  dm clone: Fix handling of partial region discards
  dm writecache: add cond_resched to avoid CPU hangs
  dm integrity: improve discard in journal mode
  dm integrity: add optional discard support
  dm integrity: allow resize of the integrity device
  dm integrity: factor out get_provided_data_sectors()
  dm integrity: don't replay journal data past the end of the device
  dm integrity: remove sector type casts
  dm integrity: fix a crash with unusually large tag size
  dm zoned: remove duplicate nr_rnd_zones increase in dmz_init_zone()
  dm verity fec: fix memory leak in verity_fec_dtr
  dm writecache: optimize superblock write
  dm writecache: implement gradual cleanup
  dm writecache: implement the "cleaner" policy
  dm writecache: do direct write if the cache is full
  dm integrity: print device name in integrity_metadata() error message
  dm crypt: use crypt_integrity_aead() helper