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Message-ID: <20121221224649.GA3228@agk-dp.fab.redhat.com>
Date: Fri, 21 Dec 2012 22:46:50 +0000
From: Alasdair G Kergon <agk@...hat.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: dm-devel@...hat.com, Joe Thornber <ejt@...hat.com>,
Mikulas Patocka <mpatocka@...hat.com>,
linux-kernel@...r.kernel.org, Mike Snitzer <snitzer@...hat.com>,
stable@...r.kernel.org, Milan Broz <mbroz@...hat.com>,
Jonathan Brassow <jbrassow@...hat.com>,
Zdenek Kabelac <zkabelac@...hat.com>
Subject: [git pull] 3.8 device-mapper updates
Please pull from:
git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm tags/dm-3.8-fixes
to get the following device-mapper updates:
----------------------------------------------------------------
Miscellaneous device-mapper fixes, cleanups and performance improvements.
Of particular note:
- Disable broken WRITE SAME support in all targets except linear and striped.
Use it when kcopyd is zeroing blocks.
- Remove several mempools from targets by moving the data into the bio's new
front_pad area(which dm calls 'per_bio_data').
- Fix a race in thin provisioning if discards are misused.
- Prevent userspace from interfering with the ioctl parameters and
use kmalloc for the data buffer if it's small instead of vmalloc.
- Throttle some annoying error messages when I/O fails.
----------------------------------------------------------------
Alasdair G Kergon (1):
dm ioctl: prevent unsafe change to dm_ioctl data_size
Joe Thornber (7):
dm thin: replace dm_cell_release_singleton with cell_defer_except
dm thin: fix race between simultaneous io and discards to same block
dm thin: wake worker when discard is prepared
dm persistent data: fix nested btree deletion
dm thin: rename cell_defer_except to cell_defer_no_holder
dm thin: cleanup dead code
dm persistent data: improve improve space map block alloc failure message
Jonathan Brassow (1):
dm raid: round region_size to power of two
Mike Snitzer (10):
dm: disable WRITE SAME
dm thin: emit ignore_discard in status when discards disabled
dm block manager: reinstate message when validator fails
dm persistent data: use DMERR_LIMIT for errors
dm thin: use DMERR_LIMIT for errors
dm: prepare to support WRITE SAME
dm: add WRITE SAME support
dm linear: add WRITE SAME support
dm kcopyd: add WRITE SAME support to dm_kcopyd_zero
dm stripe: add WRITE SAME support
Mikulas Patocka (17):
dm persistent data: rename node to btree_node
dm raid1: remove impossible mempool_alloc error test
dm raid: use DM_ENDIO_INCOMPLETE
dm snapshot: optimize track_chunk
dm ioctl: remove PF_MEMALLOC
dm ioctl: use kmalloc if possible
dm: introduce per_bio_data
dm raid1: use per_bio_data
dm verity: use per_bio_data
dm snapshot: use per_bio_data
dm: move target request nr to dm_target_io
dm raid1: rename read_record to bio_record
dm flakey: dont use map_context
dm raid1: dont use map_context
dm thin: dont use map_context
dm snapshot: do not use map_context
dm: remove map_info
drivers/md/dm-bio-prison.c | 25 ---
drivers/md/dm-bio-prison.h | 1 -
drivers/md/dm-crypt.c | 5 +-
drivers/md/dm-delay.c | 5 +-
drivers/md/dm-flakey.c | 21 +-
drivers/md/dm-io.c | 23 +-
drivers/md/dm-ioctl.c | 64 ++++--
drivers/md/dm-kcopyd.c | 18 +-
drivers/md/dm-linear.c | 6 +-
drivers/md/dm-raid.c | 8 +-
drivers/md/dm-raid1.c | 75 ++-----
drivers/md/dm-snap.c | 90 +++-----
drivers/md/dm-stripe.c | 20 +-
drivers/md/dm-table.c | 41 +++-
drivers/md/dm-target.c | 5 +-
drivers/md/dm-thin-metadata.c | 2 +-
drivers/md/dm-thin.c | 234 ++++++++++----------
drivers/md/dm-verity.c | 25 +--
drivers/md/dm-zero.c | 5 +-
drivers/md/dm.c | 84 ++++---
drivers/md/dm.h | 2 +-
drivers/md/persistent-data/dm-block-manager.c | 12 +-
drivers/md/persistent-data/dm-btree-internal.h | 16 +-
drivers/md/persistent-data/dm-btree-remove.c | 50 ++---
drivers/md/persistent-data/dm-btree-spine.c | 20 +-
drivers/md/persistent-data/dm-btree.c | 31 +--
drivers/md/persistent-data/dm-space-map-common.c | 16 +-
drivers/md/persistent-data/dm-space-map-metadata.c | 2 +-
include/linux/device-mapper.h | 55 ++++-
include/uapi/linux/dm-ioctl.h | 4 +-
30 files changed, 522 insertions(+), 443 deletions(-)
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