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Message-ID: <20130910141902.GA24038@redhat.com>
Date: Tue, 10 Sep 2013 10:19:03 -0400
From: Mike Snitzer <snitzer@...hat.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, dm-devel@...hat.com,
Alasdair G Kergon <agk@...hat.com>,
Carlos Maiolino <cmaiolino@...hat.com>,
Tejun Heo <tj@...nel.org>, Joe Thornber <ejt@...hat.com>,
Stanislaw Gruszka <sgruszka@...hat.com>,
Ingo Molnar <mingo@...nel.org>,
Frederic Weisbecker <fweisbec@...il.com>,
Mikulas Patocka <mpatocka@...hat.com>,
Joe Jin <joe.jin@...cle.com>,
"Jun'ichi Nomura" <j-nomura@...jp.nec.com>
Subject: [git pull] device-mapper changes for 3.12
Hi Linus,
The following changes since commit b936bf8b785f0fbe083d203049e4da1c56ec788f:
dm cache: avoid conflicting remove_mapping() in mq policy (2013-08-16 15:56:51 -0400)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/dm-3.12-changes
for you to fetch changes up to 7fff5e8f727285cf54e6aba10f31b196f207b98a:
dm stripe: silence a couple sparse warnings (2013-09-06 11:36:01 -0400)
Please pull, thanks.
Mike
----------------------------------------------------------------
Add the ability to collect I/O statistics on user-defined regions of a
device-mapper device. This dm-stats code required the reintroduction of
a div64_u64_rem() helper, but as a separate method that doesn't slow
down div64_u64() -- especially on 32-bit systems.
Allow the error target to replace request-based DM devices
(e.g. multipath) in addition to bio-based DM devices.
Various other small code fixes and improvements to thin-provisioning, DM
cache and the DM ioctl interface.
----------------------------------------------------------------
Alasdair Kergon (1):
dm ioctl: prevent rename to empty name or uuid
Carlos Maiolino (1):
dm thin: add data block size limits to Documentation
Joe Thornber (3):
dm btree: use pop_frame in dm_btree_del to cleanup code
dm btree: prefetch child nodes when walking tree for a dm_btree_del
dm space map: optimise sm_ll_dec and sm_ll_inc
Mike Snitzer (13):
dm cache: document metadata device is exclussive to a cache
dm cache: add data block size limits to code and Documentation
dm thin: fix stacking of geometry limits
dm cache: fix stacking of geometry limits
dm cache: eliminate holes in cache structure
math64: New separate div64_u64_rem helper
dm: allow error target to replace bio-based and request-based targets
dm thin: prefix pool error messages with pool device name
dm thin: set pool read-only if breaking_sharing fails block allocation
dm ioctl: increase granularity of type_lock when loading table
dm ioctl: cleanup error handling in table_load
dm thin: always return -ENOSPC if no_free_space is set
dm stripe: silence a couple sparse warnings
Mikulas Patocka (1):
dm: add statistics support
Tejun Heo (1):
dm: stop using WQ_NON_REENTRANT
Documentation/device-mapper/cache.txt | 6 +-
Documentation/device-mapper/statistics.txt | 186 +++++
Documentation/device-mapper/thin-provisioning.txt | 15 +-
drivers/md/Makefile | 2 +-
drivers/md/dm-cache-target.c | 59 +-
drivers/md/dm-crypt.c | 10 +-
drivers/md/dm-ioctl.c | 60 +-
drivers/md/dm-kcopyd.c | 3 +-
drivers/md/dm-raid1.c | 3 +-
drivers/md/dm-stats.c | 969 ++++++++++++++++++++++
drivers/md/dm-stats.h | 40 +
drivers/md/dm-stripe.c | 1 +
drivers/md/dm-table.c | 20 +-
drivers/md/dm-target.c | 9 +-
drivers/md/dm-thin.c | 122 ++-
drivers/md/dm.c | 70 +-
drivers/md/dm.h | 27 +
drivers/md/persistent-data/dm-block-manager.c | 5 +
drivers/md/persistent-data/dm-block-manager.h | 5 +
drivers/md/persistent-data/dm-btree.c | 28 +-
drivers/md/persistent-data/dm-space-map-common.c | 77 +-
include/linux/device-mapper.h | 9 +
include/linux/math64.h | 13 +
include/uapi/linux/dm-ioctl.h | 4 +-
lib/div64.c | 40 +
25 files changed, 1621 insertions(+), 162 deletions(-)
create mode 100644 Documentation/device-mapper/statistics.txt
create mode 100644 drivers/md/dm-stats.c
create mode 100644 drivers/md/dm-stats.h
--
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