[git pull] device mapper changes for 3.20

From: Mike Snitzer
Date: Thu Feb 12 2015 - 17:02:25 EST

Hi Linus,

These changes build on linux-block.git's for-3.20/core branch.

The following changes since commit db507b3ffd9b7a1c87e732ac6e2c3a5d0babb15a:

dm: fix multipath regression due to initializing wrong request (2015-02-09 10:46:08 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git tags/dm-3.20-changes

for you to fetch changes up to a4afe76b2b922e6197944d7be0be7a18b53175ae:

dm: inherit QUEUE_FLAG_SG_GAPS flags from underlying queues (2015-02-11 10:25:46 -0500)

- Most significant change this cycle is request-based DM now supports
stacking ontop of blk-mq devices. This blk-mq support changes the
model request-based DM uses for cloning a request to relying on
calling blk_get_request() directly from the underlying blk-mq device.
Early consumer of this code is Intel's emerging NVMe hardware; thanks
to Keith Busch for working on, and pushing for, these changes.

- A few other small fixes and cleanups across other DM targets.

Asaf Vertz (1):
dm bufio: fix time comparison to use time_after_eq()

Dan Carpenter (1):
dm raid: fix a couple integer overflows

Johannes Thumshirn (1):
dm mpath: simplify failure path of dm_multipath_init()

Junxiao Bi (1):
dm ioctl: fix stale comment above dm_get_inactive_table()

Keith Busch (3):
dm: submit stacked requests in irq enabled context
dm: prepare for allocating blk-mq clone requests in target
dm: inherit QUEUE_FLAG_SG_GAPS flags from underlying queues

Loic Pefferkorn (1):
dm crypt: update url in CONFIG_DM_CRYPT help text

Manuel Schölling (1):
dm: use time_in_range() and time_after()

Markus Elfring (1):
dm snapshot: remove unnecessary NULL checks before vfree() calls

Mike Snitzer (4):
dm: remove exports for request-based interfaces without external callers
dm: split request structure out from dm_rq_target_io structure
dm: allocate requests in target when stacking on blk-mq devices
dm table: train hybrid target type detection to select blk-mq if appropriate

Rickard Strandqvist (1):
dm thin metadata: remove unused dm_pool_get_data_block_size()

drivers/md/Kconfig | 5 +-
drivers/md/dm-bufio.c | 3 +-
drivers/md/dm-cache-target.c | 5 +-
drivers/md/dm-ioctl.c | 4 +-
drivers/md/dm-log-userspace-base.c | 5 +-
drivers/md/dm-mpath.c | 87 +++++++---
drivers/md/dm-raid.c | 16 +-
drivers/md/dm-snap-persistent.c | 14 +-
drivers/md/dm-table.c | 72 ++++++--
drivers/md/dm-target.c | 15 +-
drivers/md/dm-thin-metadata.c | 9 -
drivers/md/dm-thin-metadata.h | 2 -
drivers/md/dm-thin.c | 5 +-
drivers/md/dm.c | 347 +++++++++++++++++++++++++------------
drivers/md/dm.h | 11 +-
include/linux/device-mapper.h | 10 +-
include/uapi/linux/dm-ioctl.h | 4 +-
17 files changed, 416 insertions(+), 198 deletions(-)
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