linux/drivers/md/persistent-data
Linus Torvalds 311f71281f - Improve DM snapshot target's scalability by using finer grained
locking.  Requires some list_bl interface improvements.
 
 - Add ability for DM integrity to use a bitmap mode, that tracks regions
   where data and metadata are out of sync, instead of using a journal.
 
 - Improve DM thin provisioning target to not write metadata changes to
   disk if the thin-pool and associated thin devices are merely
   activated but not used.  This avoids metadata corruption due to
   concurrent activation of thin devices across different OS instances
   (e.g. split brain scenarios, which ultimately would be avoided if
   proper device filters were used -- but not having proper filtering has
   proven a very common configuration mistake)
 
 - Fix missing call to path selector type->end_io in DM multipath.  This
   fixes reported performance problems due to inaccurate path selector IO
   accounting causing an imbalance of IO (e.g. avoiding issuing IO to
   particular path due to it seemingly being heavily used).
 
 - Fix bug in DM cache metadata's loading of its discard bitset that
   could lead to all cache blocks being discarded if the very first cache
   block was discarded (thankfully in practice the first cache block is
   generally in use; be it FS superblock, partition table, disk label,
   etc).
 
 - Add testing-only DM dust target which simulates a device that has
   failing sectors and/or read failures.
 
 - Fix a DM init error path reference count hang that caused boot hangs
   if user supplied malformed input on kernel commandline.
 
 - Fix a couple issues with DM crypt target's logging being overly
   verbose or lacking context.
 
 - Various other small fixes to DM init, DM multipath, DM zoned, and DM
   crypt.
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Merge tag 'for-5.2/dm-changes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Improve DM snapshot target's scalability by using finer grained
   locking. Requires some list_bl interface improvements.

 - Add ability for DM integrity to use a bitmap mode, that tracks
   regions where data and metadata are out of sync, instead of using a
   journal.

 - Improve DM thin provisioning target to not write metadata changes to
   disk if the thin-pool and associated thin devices are merely
   activated but not used. This avoids metadata corruption due to
   concurrent activation of thin devices across different OS instances
   (e.g. split brain scenarios, which ultimately would be avoided if
   proper device filters were used -- but not having proper filtering
   has proven a very common configuration mistake)

 - Fix missing call to path selector type->end_io in DM multipath. This
   fixes reported performance problems due to inaccurate path selector
   IO accounting causing an imbalance of IO (e.g. avoiding issuing IO to
   particular path due to it seemingly being heavily used).

 - Fix bug in DM cache metadata's loading of its discard bitset that
   could lead to all cache blocks being discarded if the very first
   cache block was discarded (thankfully in practice the first cache
   block is generally in use; be it FS superblock, partition table, disk
   label, etc).

 - Add testing-only DM dust target which simulates a device that has
   failing sectors and/or read failures.

 - Fix a DM init error path reference count hang that caused boot hangs
   if user supplied malformed input on kernel commandline.

 - Fix a couple issues with DM crypt target's logging being overly
   verbose or lacking context.

 - Various other small fixes to DM init, DM multipath, DM zoned, and DM
   crypt.

* tag 'for-5.2/dm-changes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (42 commits)
  dm: fix a couple brace coding style issues
  dm crypt: print device name in integrity error message
  dm crypt: move detailed message into debug level
  dm ioctl: fix hang in early create error condition
  dm integrity: whitespace, coding style and dead code cleanup
  dm integrity: implement synchronous mode for reboot handling
  dm integrity: handle machine reboot in bitmap mode
  dm integrity: add a bitmap mode
  dm integrity: introduce a function add_new_range_and_wait()
  dm integrity: allow large ranges to be described
  dm ingerity: pass size to dm_integrity_alloc_page_list()
  dm integrity: introduce rw_journal_sectors()
  dm integrity: update documentation
  dm integrity: don't report unused options
  dm integrity: don't check null pointer before kvfree and vfree
  dm integrity: correctly calculate the size of metadata area
  dm dust: Make dm_dust_init and dm_dust_exit static
  dm dust: remove redundant unsigned comparison to less than zero
  dm mpath: always free attached_handler_name in parse_path()
  dm init: fix max devices/targets checks
  ...
2019-05-16 15:55:48 -07:00
..
dm-array.c dm persistent data: add cursor skip functions to the cursor APIs 2017-02-16 13:12:50 -05:00
dm-array.h dm persistent data: add cursor skip functions to the cursor APIs 2017-02-16 13:12:50 -05:00
dm-bitset.c dm persistent data: add cursor skip functions to the cursor APIs 2017-02-16 13:12:50 -05:00
dm-bitset.h dm persistent data: add cursor skip functions to the cursor APIs 2017-02-16 13:12:50 -05:00
dm-block-manager.c dm persistent data: Simplify stack trace handling 2019-04-29 12:37:52 +02:00
dm-block-manager.h dm block manager: remove an unused argument from dm_block_manager_create() 2017-04-27 17:08:41 -04:00
dm-btree-internal.h dm persistent data: eliminate unnecessary return values 2015-10-31 19:06:02 -04:00
dm-btree-remove.c - Revert a dm-multipath change that caused a regression for unprivledged 2015-11-04 21:19:53 -08:00
dm-btree-spine.c dm persistent data: eliminate unnecessary return values 2015-10-31 19:06:02 -04:00
dm-btree.c dm btree: fix serious bug in btree_split_beneath() 2018-01-17 09:07:55 -05:00
dm-btree.h dm persistent data: add cursor skip functions to the cursor APIs 2017-02-16 13:12:50 -05:00
dm-persistent-data-internal.h
dm-space-map-common.c dm space map common: zero entire ll_disk 2019-04-18 16:18:32 -04:00
dm-space-map-common.h dm persistent data: only commit space map if index changed 2012-07-27 15:08:06 +01:00
dm-space-map-disk.c dm space map disk: fix some book keeping in the disk space map 2017-05-15 15:09:50 -04:00
dm-space-map-disk.h
dm-space-map-metadata.c dm space map metadata: use ARRAY_SIZE 2017-11-10 15:44:52 -05:00
dm-space-map-metadata.h dm thin: allow metadata space larger than supported to go unused 2014-02-27 11:49:08 -05:00
dm-space-map.h dm persistent data: add threshold callback to space map 2013-05-10 14:37:20 +01:00
dm-transaction-manager.c dm persistent data: eliminate unnecessary return values 2015-10-31 19:06:02 -04:00
dm-transaction-manager.h dm persistent data: eliminate unnecessary return values 2015-10-31 19:06:02 -04:00
Kconfig dm bufio: store stacktrace in buffers to help find buffer leaks 2015-12-10 10:38:58 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00