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Message-ID: <20131113024751.GB1540@redhat.com>
Date: Tue, 12 Nov 2013 21:47:51 -0500
From: Mike Snitzer <snitzer@...hat.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: dm-devel@...hat.com, linux-kernel@...r.kernel.org,
Alasdair G Kergon <agk@...hat.com>,
Andy Speagle <Andy.Speagle@...app.com>,
Hannes Reinecke <hare@...e.de>,
Heinz Mauelshagen <heinzm@...hat.com>,
Joe Thornber <ejt@...hat.com>,
Junichi Nomura <j-nomura@...jp.nec.com>,
Krishnasamy Somasundaram <somasundaram.krishnasamy@...app.com>,
Mikulas Patocka <mpatocka@...hat.com>,
Milan Broz <gmazyland@...il.com>,
Morgan Mears <Morgan.Mears@...app.com>,
Shiva Krishna Merla <shivakrishna.merla@...app.com>
Subject: [git pull] device mapper changes for 3.13
The following changes since commit 61e6cfa80de5760bbe406f4e815b7739205754d2:
Linux 3.12-rc5 (2013-10-13 15:41:28 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/dm-3.13-changes
for you to fetch changes up to 7b6b2bc98c0303b7f043ad5b35906f833e56308d:
dm cache: resolve small nits and improve Documentation (2013-11-12 13:11:09 -0500)
Please pull, thanks.
Mike
----------------------------------------------------------------
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.
----------------------------------------------------------------
Hannes Reinecke (1):
dm mpath: requeue I/O during pg_init
Heinz Mauelshagen (3):
dm cache: use cell_defer() boolean argument consistently
dm cache: log error message if dm_kcopyd_copy() fails
dm cache: optimize commit_if_needed
Joe Thornber (18):
dm array: fix bug in growing array
dm cache policy mq: protect residency method with existing mutex
dm cache: io destined for the cache device can now serve as tick bios
dm cache: fix a race condition between queuing new migrations and quiescing for a shutdown
dm cache: improve efficiency of quiescing flag management
dm cache policy: remove return from void policy_remove_mapping
dm cache policy mq: a few small fixes
dm cache metadata: return bool from __superblock_all_zeroes
dm space map disk: optimise sm_disk_dec_block
dm cache policy mq: implement writeback_work() and mq_{set,clear}_dirty()
dm cache: be much more aggressive about promoting writes to discarded blocks
dm cache: promotion optimisation for writes
dm cache: cache shrinking support
dm cache: add passthrough mode
dm cache metadata: check the metadata version when reading the superblock
dm cache policy mq: reduce memory requirements
dm cache: add remove_cblock method to policy interface
dm cache: add cache block invalidation support
Mike Snitzer (3):
dm table: print error on preresume failure
MAINTAINERS: add reference to device-mapper's linux-dm.git tree
dm cache: resolve small nits and improve Documentation
Mikulas Patocka (4):
dm: allocate buffer for messages with small number of arguments using GFP_NOIO
dm cache: return -EINVAL if the user specifies unknown cache policy
dm: allow remove to be deferred
dm: fix Kconfig menu indentation
Milan Broz (2):
dm crypt: properly handle extra key string in initialization
dm crypt: add TCW IV mode for old CBC TCRYPT containers
Shiva Krishna Merla (1):
dm mpath: fix race condition between multipath_dtr and pg_init_done
Documentation/device-mapper/cache-policies.txt | 6 +-
Documentation/device-mapper/cache.txt | 57 +-
Documentation/device-mapper/dm-crypt.txt | 11 +-
MAINTAINERS | 1 +
drivers/md/Kconfig | 22 +-
drivers/md/dm-cache-metadata.c | 104 +++-
drivers/md/dm-cache-metadata.h | 5 +
drivers/md/dm-cache-policy-internal.h | 7 +-
drivers/md/dm-cache-policy-mq.c | 681 ++++++++++++++----------
drivers/md/dm-cache-policy.c | 4 +-
drivers/md/dm-cache-policy.h | 21 +-
drivers/md/dm-cache-target.c | 687 +++++++++++++++++++++----
drivers/md/dm-crypt.c | 214 +++++++-
drivers/md/dm-ioctl.c | 36 +-
drivers/md/dm-mpath.c | 34 +-
drivers/md/dm-table.c | 23 +-
drivers/md/dm.c | 47 +-
drivers/md/dm.h | 13 +-
drivers/md/persistent-data/dm-array.c | 5 +-
drivers/md/persistent-data/dm-space-map-disk.c | 18 +-
include/uapi/linux/dm-ioctl.h | 15 +-
21 files changed, 1544 insertions(+), 467 deletions(-)
--
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