Merge tag 'dm-3.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper changes from Mike Snitzer:
"A set of device-mapper changes for 3.13.
Improve reliability of buffer allocations for dm messages with a small
number of arguments, a couple path group initialization fixes for dm
multipath, a fix for resizing a dm array, various fixes and
optimizations for dm cache, a fix for device mapper's Kconfig menu
indentation.
Features added include:
- dm crypt support for activating legacy CBC TrueCrypt containers
(useful for forensics of these old TCRYPT containers)
- reduced dm-cache memory requirements for each block in the cache
- basic support for shrinking a dm-cache's cache (fast) device
- most notably, dm-cache support for managing cache coherency when
deploying dm-cache with sophisticated origin volumes (that support
hardware snapshots and/or clustering): these changes come in the
form of a new passthrough operation mode and a cache block
invalidation interface"
* tag 'dm-3.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (32 commits)
dm cache: resolve small nits and improve Documentation
dm cache: add cache block invalidation support
dm cache: add remove_cblock method to policy interface
dm cache policy mq: reduce memory requirements
dm cache metadata: check the metadata version when reading the superblock
dm cache: add passthrough mode
dm cache: cache shrinking support
dm cache: promotion optimisation for writes
dm cache: be much more aggressive about promoting writes to discarded blocks
dm cache policy mq: implement writeback_work() and mq_{set,clear}_dirty()
dm cache: optimize commit_if_needed
dm space map disk: optimise sm_disk_dec_block
MAINTAINERS: add reference to device-mapper's linux-dm.git tree
dm: fix Kconfig menu indentation
dm: allow remove to be deferred
dm table: print error on preresume failure
dm crypt: add TCW IV mode for old CBC TCRYPT containers
dm crypt: properly handle extra key string in initialization
dm cache: log error message if dm_kcopyd_copy() fails
dm cache: use cell_defer() boolean argument consistently
...