Merge branch 'dmaengine' into async-tx-next

Conflicts:
crypto/async_tx/async_xor.c
drivers/dma/ioat/dma_v2.h
drivers/dma/ioat/pci.c
drivers/md/raid5.c

Merge commit 'v2.6.31-rc1' into dmaengine

Merge branches 'sh/smp' and 'sh/stable-updates'

Merge remote branch 'origin/master' of ../linux-2.6 into drm-next

This was a non-trivial merge with some patches sent to Linus
in drm-fixes.

Conflicts:
drivers/gpu/drm/radeon/r300.c
drivers/gpu/d

Merge remote branch 'origin/master' of ../linux-2.6 into drm-next

This was a non-trivial merge with some patches sent to Linus
in drm-fixes.

Conflicts:
drivers/gpu/drm/radeon/r300.c
drivers/gpu/drm/radeon/radeon_asic.h
drivers/gpu/drm/radeon/rs600.c
drivers/gpu/drm/radeon/rs690.c
drivers/gpu/drm/radeon/rv515.c

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Merge branch 'tracing/core' into tracing/hw-breakpoints

Conflicts:
arch/Kconfig
kernel/trace/trace.h

Merge reason: resolve the conflicts, plus adopt to the new
ring-buffer APIs.

Si

Merge branch 'tracing/core' into tracing/hw-breakpoints

Conflicts:
arch/Kconfig
kernel/trace/trace.h

Merge reason: resolve the conflicts, plus adopt to the new
ring-buffer APIs.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Merge commit 'v2.6.31-rc9' into tracing/core

Merge reason: move from -rc5 to -rc9.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm

* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
dm snapshot: fix on disk chunk size validation
dm exception

Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm

* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
dm snapshot: fix on disk chunk size validation
dm exception store: split set_chunk_size
dm snapshot: fix header corruption race on invalidation
dm snapshot: refactor zero_disk_area to use chunk_io
dm log: userspace add luid to distinguish between concurrent log instances
dm raid1: do not allow log_failure variable to unset after being set
dm log: remove incorrect field from userspace table output
dm log: fix userspace status output
dm stripe: expose correct io hints
dm table: add more context to terse warning messages
dm table: fix queue_limit checking device iterator
dm snapshot: implement iterate devices
dm multipath: fix oops when request based io fails when no paths

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dm log: userspace add luid to distinguish between concurrent log instances

Device-mapper userspace logs (like the clustered log) are
identified by a universally unique identifier (UUID). This
ident

dm log: userspace add luid to distinguish between concurrent log instances

Device-mapper userspace logs (like the clustered log) are
identified by a universally unique identifier (UUID). This
identifier is used to associate requests from the kernel to
a specific log in userspace. The UUID must be unique everywhere,
since multiple machines may use this identifier when communicating
about a particular log, as is the case for cluster logs.

Sometimes, device-mapper/LVM may re-use a UUID. This is the
case during pvmoves, when moving from one segment of an LV
to another, or when resizing a mirror, etc. In these cases,
a new log is created with the same UUID and loaded in the
"inactive" slot. When a device-mapper "resume" is issued,
the "live" table is deactivated and the new "inactive" table
becomes "live". (The "inactive" table can also be removed
via a device-mapper 'clear' command.)

The above two issues were colliding. More than one log was being
created with the same UUID, and there was no way to distinguish
between them. So, sometimes the wrong log would be swapped
out during the exchange.

The solution is to create a locally unique identifier,
'luid', to go along with the UUID. This new identifier is used
to determine exactly which log is being referenced by the kernel
when the log exchange is made. The identifier is not
universally safe, but it does not need to be, since
create/destroy/suspend/resume operations are bound to a specific
machine; and these are the operations that make up the exchange.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

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Merge commit 'v2.6.31-rc7' into x86/cpu

Merge branch 'topic/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 into upstream/wm8711

Merge commit 'v2.6.31-rc6' into core/rcu

Merge reason: the branch was on pre-rc1 .30, update to latest.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge branch 'for-2.6.32' into mxc

Conflicts:
sound/soc/Makefile

Merge commit 'v2.6.31-rc4' into next

Merge branch 'linus' into tracing/core

Merge reason: tracing/core was on an older, pre-rc1 base.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge commit 'v2.6.31-rc3'; commit 'tip/oprofile' into oprofile/core

Conflicts:
drivers/oprofile/oprofile_stats.c
drivers/usb/otg/Kconfig
drivers/usb/otg/Makefile

Signed-off-by: Robert Richter <

Merge commit 'v2.6.31-rc3'; commit 'tip/oprofile' into oprofile/core

Conflicts:
drivers/oprofile/oprofile_stats.c
drivers/usb/otg/Kconfig
drivers/usb/otg/Makefile

Signed-off-by: Robert Richter <robert.richter@amd.com>

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Merge branch 'linus' into x86/cleanups

Merge reason: We were on an older pre-rc1 base, move to almost-rc2.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge branch 'master' into for-next

Pull linus#master to merge PER_CPU_DEF_ATTRIBUTES and alpha build fix
changes. As alpha in percpu tree uses 'weak' attribute instead of
inline assembly, there's

Merge branch 'master' into for-next

Pull linus#master to merge PER_CPU_DEF_ATTRIBUTES and alpha build fix
changes. As alpha in percpu tree uses 'weak' attribute instead of
inline assembly, there's no need for __used attribute.

Conflicts:
arch/alpha/include/asm/percpu.h
arch/mn10300/kernel/vmlinux.lds.S
include/linux/percpu-defs.h

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Merge branch 'linus' into perfcounters/urgent

Merge reason: this branch was on a .30-ish base before, update
it to an almost-.31-rc2 upstream base to pick up fixes.

Signed-off-by: Ing

Merge branch 'linus' into perfcounters/urgent

Merge reason: this branch was on a .30-ish base before, update
it to an almost-.31-rc2 upstream base to pick up fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Merge branch 'master' into next

Merge branch 'linus' into sched/core

Merge reason: we will merge a dependent patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm

* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (48 commits)
dm mpath: change to be request based
dm: disab

Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm

* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (48 commits)
dm mpath: change to be request based
dm: disable interrupt when taking map_lock
dm: do not set QUEUE_ORDERED_DRAIN if request based
dm: enable request based option
dm: prepare for request based option
dm raid1: add userspace log
dm: calculate queue limits during resume not load
dm log: fix create_log_context to use logical_block_size of log device
dm target:s introduce iterate devices fn
dm table: establish queue limits by copying table limits
dm table: replace struct io_restrictions with struct queue_limits
dm table: validate device logical_block_size
dm table: ensure targets are aligned to logical_block_size
dm ioctl: support cookies for udev
dm: sysfs add suspended attribute
dm table: improve warning message when devices not freed before destruction
dm mpath: add service time load balancer
dm mpath: add queue length load balancer
dm mpath: add start_io and nr_bytes to path selectors
dm snapshot: use barrier when writing exception store
...

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dm raid1: add userspace log

This patch contains a device-mapper mirror log module that forwards
requests to userspace for processing.

The structures used for communication between kernel and usersp

dm raid1: add userspace log

This patch contains a device-mapper mirror log module that forwards
requests to userspace for processing.

The structures used for communication between kernel and userspace are
located in include/linux/dm-log-userspace.h. Due to the frequency,
diversity, and 2-way communication nature of the exchanges between
kernel and userspace, 'connector' was chosen as the interface for
communication.

The first log implementations written in userspace - "clustered-disk"
and "clustered-core" - support clustered shared storage. A userspace
daemon (in the LVM2 source code repository) uses openAIS/corosync to
process requests in an ordered fashion with the rest of the nodes in the
cluster so as to prevent log state corruption. Other implementations
with no association to LVM or openAIS/corosync, are certainly possible.

(Imagine if two machines are writing to the same region of a mirror.
They would both mark the region dirty, but you need a cluster-aware
entity that can handle properly marking the region clean when they are
done. Otherwise, you might clear the region when the first machine is
done, not the second.)

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

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