The short atom parser can return an errno from decoding but does not
currently return the error as a signed value. Convert all of the parsers
to ssize_t.
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Reviewed-by: Scott Bauer <scott.bauer@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

The end_device and sas_host devices support BSG ioctls, but the
request_queue allocated for them isn't set up to allocate the struct
scsi_request payload. This leads to memory corruption in the call to
scsi_req_init() in bsg_map_hdr(), since it will memset past the end of
the allocated request. Fix it by setting ->cmd_size on the allocated
request_queue.

Fixes: 82ed4db4 ("block: split scsi_request out of struct request")
Signed-off-by: Omar Sandoval <osandov@fb.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

When a device gets removed, block device inode unhashed so that it is not
used anymore (bdget() will not find it anymore). Later when a new device
gets created with the same device number, we create new block device
inode. However there may be file system device inodes whose i_bdev still
points to the original block device inode and thus we get two active
block device inodes for the same device. They will share the same
gendisk so the only visible differences will be that page caches will
not be coherent and BDIs will be different (the old block device inode
still points to unregistered BDI).

Fix the problem by checking in bd_acquire() whether i_bdev still points
to active block device inode and re-lookup the block device if not. That
way any open of a block device happening after the old device has been
removed will get correct block device inode.
Tested-by: Lekshmi Pillai <lekshmicpillai@in.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>

Iteration over partitions in del_gendisk() omits part0. Add
bdev_unhash_inode() call for the whole device. Otherwise if the device
number gets reused, bdev inode will be still associated with the old
(stale) bdi.
Tested-by: Lekshmi Pillai <lekshmicpillai@in.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>

Move bdev_unhash_inode() after invalidate_partition() as
invalidate_partition() looks up bdev and it cannot find the right bdev
inode after bdev_unhash_inode() is called. Thus invalidate_partition()
would not invalidate page cache of the previously used bdev. Also use
part_devt() when calling bdev_unhash_inode() instead of manually
creating the device number.
Tested-by: Lekshmi Pillai <lekshmicpillai@in.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>

If we fail to register the blockdev we need to make sure to destroy the
recv workqueue.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

We noticed when trying to do O_DIRECT to an export on the server side
that we were getting requests smaller than the 4k sectorsize of the
device.  This is because the client isn't setting the logical and
physical blocksizes properly for the underlying device.  Fix this up by
setting the queue blocksizes and then calling bd_set_size.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

Break the ioctl handling out into helper functions, some of these things
are getting pretty big and unwieldy.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

Without this drivers that don't clear the state themselves can see off
effects.  For example Hyper-V VMs using the storvsc driver will often
hang during boot due to uncleared Test Unit Ready failures.

Fixes: e9c787e6 ("scsi: allocate scsi_cmnd structures as part of struct request")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Dexuan Cui <decui@microsoft.com>
Tested-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

Pull block layer updates from Jens Axboe:

 - blk-mq scheduling framework from me and Omar, with a port of the
   deadline scheduler for this framework. A port of BFQ from Paolo is in
   the works, and should be ready for 4.12.

 - Various fixups and improvements to the above scheduling framework
   from Omar, Paolo, Bart, me, others.

 - Cleanup of the exported sysfs blk-mq data into debugfs, from Omar.
   This allows us to export more information that helps debug hangs or
   performance issues, without cluttering or abusing the sysfs API.

 - Fixes for the sbitmap code, the scalable bitmap code that was
   migrated from blk-mq, from Omar.

 - Removal of the BLOCK_PC support in struct request, and refactoring of
   carrying SCSI payloads in the block layer. This cleans up the code
   nicely, and enables us to kill the SCSI specific parts of struct
   request, shrinking it down nicely. From Christoph mainly, with help
   from Hannes.

 - Support for ranged discard requests and discard merging, also from
   Christoph.

 - Support for OPAL in the block layer, and for NVMe as well. Mainly
   from Scott Bauer, with fixes/updates from various others folks.

 - Error code fixup for gdrom from Christophe.

 - cciss pci irq allocation cleanup from Christoph.

 - Making the cdrom device operations read only, from Kees Cook.

 - Fixes for duplicate bdi registrations and bdi/queue life time
   problems from Jan and Dan.

 - Set of fixes and updates for lightnvm, from Matias and Javier.

 - A few fixes for nbd from Josef, using idr to name devices and a
   workqueue deadlock fix on receive. Also marks Josef as the current
   maintainer of nbd.

 - Fix from Josef, overwriting queue settings when the number of
   hardware queues is updated for a blk-mq device.

 - NVMe fix from Keith, ensuring that we don't repeatedly mark and IO
   aborted, if we didn't end up aborting it.

 - SG gap merging fix from Ming Lei for block.

 - Loop fix also from Ming, fixing a race and crash between setting loop
   status and IO.

 - Two block race fixes from Tahsin, fixing request list iteration and
   fixing a race between device registration and udev device add
   notifiations.

 - Double free fix from cgroup writeback, from Tejun.

 - Another double free fix in blkcg, from Hou Tao.

 - Partition overflow fix for EFI from Alden Tondettar.

* tag 'for-4.11/linus-merge-signed' of git://git.kernel.dk/linux-block: (156 commits)
  nvme: Check for Security send/recv support before issuing commands.
  block/sed-opal: allocate struct opal_dev dynamically
  block/sed-opal: tone down not supported warnings
  block: don't defer flushes on blk-mq + scheduling
  blk-mq-sched: ask scheduler for work, if we failed dispatching leftovers
  blk-mq: don't special case flush inserts for blk-mq-sched
  blk-mq-sched: don't add flushes to the head of requeue queue
  blk-mq: have blk_mq_dispatch_rq_list() return if we queued IO or not
  block: do not allow updates through sysfs until registration completes
  lightnvm: set default lun range when no luns are specified
  lightnvm: fix off-by-one error on target initialization
  Maintainers: Modify SED list from nvme to block
  Move stack parameters for sed_ioctl to prevent oversized stack with CONFIG_KASAN
  uapi: sed-opal fix IOW for activate lsp to use correct struct
  cdrom: Make device operations read-only
  elevator: fix loading wrong elevator type for blk-mq devices
  cciss: switch to pci_irq_alloc_vectors
  block/loop: fix race between I/O and set_status
  blk-mq-sched: don't hold queue_lock when calling exit_icq
  block: set make_request_fn manually in blk_mq_update_nr_hw_queues
  ...

Commit 004172bd ("sched/core: Remove unnecessary #include headers")
removed the inclusion of asm/paravirt.h which is used to get
declarations of paravirt_steal_rq_enabled and paravirt_steal_clock.

It is implicitly included on x86 but not on arm and arm64 breaking the
build if paravirtualization is used.  Since things from that header are
used directly fix the build by putting the direct inclusion back.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull GFS2 updates from Robert Peterson:
 "We've got eight GFS2 patches for this merge window:

   - Andy Price submitted a patch to make gfs2_write_full_page a static
     function.

   - Dan Carpenter submitted a patch to fix a ERR_PTR thinko.

  Three patches fix bugs related to deleting very large files, which
  cause GFS2 to run out of journal space:

   - The first one prevents GFS2 delete operation from requesting too
     much journal space.

   - The second one fixes a problem whereby GFS2 can hang because it
     wasn't taking journal space demand into its calculations.

   - The third one wakes up IO waiters when a flush is done to restart
     processes stuck waiting for journal space to become available.

  The final three patches are a performance improvement related to
  spin_lock contention between multiple writers:

   - The "tr_touched" variable was switched to a flag to be more atomic
     and eliminate the possibility of some races.

   - Function meta_lo_add was moved inline with its only caller to make
     the code more readable and efficient.

   - Contention on the gfs2_log_lock spinlock was greatly reduced by
     avoiding the lock altogether in cases where we don't really need
     it: buffers that already appear in the appropriate metadata list
     for the journal. Many thanks to Steve Whitehouse for the ideas and
     principles behind these patches"

* tag 'gfs2-4.11.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: Make gfs2_write_full_page static
  GFS2: Reduce contention on gfs2_log_lock
  GFS2: Inline function meta_lo_add
  GFS2: Switch tr_touched to flag in transaction
  GFS2: Wake up io waiters whenever a flush is done
  GFS2: Made logd daemon take into account log demand
  GFS2: Limit number of transaction blocks requested for truncates
  GFS2: Fix reference to ERR_PTR in gfs2_glock_iter_next

Pull UDF fixes and cleanups from Jan Kara:
 "Several small UDF fixes and cleanups and a small cleanup of fanotify
  code"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fanotify: simplify the code of fanotify_merge
  udf: simplify udf_ioctl()
  udf: fix ioctl errors
  udf: allow implicit blocksize specification during mount
  udf: check partition reference in udf_read_inode()
  udf: atomically read inode size
  udf: merge module informations in super.c
  udf: remove next_epos from udf_update_extent_cache()
  udf: Factor out trimming of crtime
  udf: remove empty condition
  udf: remove unneeded line break
  udf: merge bh free
  udf: use pointer for kernel_long_ad argument
  udf: use __packed instead of __attribute__ ((packed))
  udf: Make stat on symlink report symlink length as st_size
  fs/udf: make #ifdef UDF_PREALLOCATE unconditional
  fs: udf: Replace CURRENT_TIME with current_time()

Pull CIFS/SMB3 updates from Steve French:
 "Includes support for a critical SMB3 security feature: per-share
  encryption from Pavel, and a cleanup from Jean Delvare.

  Will have another cifs/smb3 merge next week"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Allow to switch on encryption with seal mount option
  CIFS: Add capability to decrypt big read responses
  CIFS: Decrypt and process small encrypted packets
  CIFS: Add copy into pages callback for a read operation
  CIFS: Add mid handle callback
  CIFS: Add transform header handling callbacks
  CIFS: Encrypt SMB3 requests before sending
  CIFS: Enable encryption during session setup phase
  CIFS: Add capability to transform requests before sending
  CIFS: Separate RFC1001 length processing for SMB2 read
  CIFS: Separate SMB2 sync header processing
  CIFS: Send RFC1001 length in a separate iov
  CIFS: Make send_cancel take rqst as argument
  CIFS: Make SendReceive2() takes resp iov
  CIFS: Separate SMB2 header structure
  CIFS: Fix splice read for non-cached files
  cifs: Add soft dependencies
  cifs: Only select the required crypto modules
  cifs: Simplify SMB2 and SMB311 dependencies

Pull ext4 updates from Ted Ts'o:
 "For this cycle we add support for the shutdown ioctl, which is
  primarily used for testing, but which can be useful on production
  systems when a scratch volume is being destroyed and the data on it
  doesn't need to be saved.

  This found (and we fixed) a number of bugs with ext4's recovery to
  corrupted file system --- the bugs increased the amount of data that
  could be potentially lost, and in the case of the inline data feature,
  could cause the kernel to BUG.

  Also included are a number of other bug fixes, including in ext4's
  fscrypt, DAX, inline data support"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (26 commits)
  ext4: rename EXT4_IOC_GOINGDOWN to EXT4_IOC_SHUTDOWN
  ext4: fix fencepost in s_first_meta_bg validation
  ext4: don't BUG when truncating encrypted inodes on the orphan list
  ext4: do not use stripe_width if it is not set
  ext4: fix stripe-unaligned allocations
  dax: assert that i_rwsem is held exclusive for writes
  ext4: fix DAX write locking
  ext4: add EXT4_IOC_GOINGDOWN ioctl
  ext4: add shutdown bit and check for it
  ext4: rename s_resize_flags to s_ext4_flags
  ext4: return EROFS if device is r/o and journal replay is needed
  ext4: preserve the needs_recovery flag when the journal is aborted
  jbd2: don't leak modified metadata buffers on an aborted journal
  ext4: fix inline data error paths
  ext4: move halfmd4 into hash.c directly
  ext4: fix use-after-iput when fscrypt contexts are inconsistent
  jbd2: fix use after free in kjournald2()
  ext4: fix data corruption in data=journal mode
  ext4: trim allocation requests to group size
  ext4: replace BUG_ON with WARN_ON in mb_find_extent()
  ...

Pull fscrypt updates from Ted Ts'o:
 "Various cleanups for the file system encryption feature"

* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt:
  fscrypt: constify struct fscrypt_operations
  fscrypt: properly declare on-stack completion
  fscrypt: split supp and notsupp declarations into their own headers
  fscrypt: remove redundant assignment of res
  fscrypt: make fscrypt_operations.key_prefix a string
  fscrypt: remove unused 'mode' member of fscrypt_ctx
  ext4: don't allow encrypted operations without keys
  fscrypt: make test_dummy_encryption require a keyring key
  fscrypt: factor out bio specific functions
  fscrypt: pass up error codes from ->get_context()
  fscrypt: remove user-triggerable warning messages
  fscrypt: use EEXIST when file already uses different policy
  fscrypt: use ENOTDIR when setting encryption policy on nondirectory
  fscrypt: use ENOKEY when file cannot be created w/o key

Merge tag 'device-properties-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull device property updates from Rafael J. Wysocki:
 "Generic device properties framework updates for v4.11-rc1

  Allow built-in (static) device properties to be declared as constant,
  make it possible to save memory by discarding alternative (but unused)
  built-in (static) property sets and add support for automatic handling
  of built-in properties to the I2C code"

* tag 'device-properties-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  i2c: allow specify device properties in i2c_board_info
  device property: export code duplicating array of property entries
  device property: constify property arrays values
  device property: allow to constify properties

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to upstream revision
  20170119, which among other things updates copyright notices in all of
  the ACPICA files, fix a couple of issues in the ACPI EC and button
  drivers, fix modalias handling for non-discoverable devices with
  DT-compatible identification strings, add a suspend quirk for one
  platform and fix a message in the APEI code.

  Specifics:

   - Update of the ACPICA code in the kernel to upstream revision
     20170119 including:

      + Fixes related to the handling of the bit width and bit offset
        fields in Generic Address Structure (Lv Zheng)
      + ACPI resources handling fix related to invalid resource
        descriptors (Bob Moore)
      + Fix to enable implicit result conversion for several ASL library
        functions (Bob Moore)
      + Support for method invocations as target operands in AML (Bob
        Moore)
      + Fix to use a correct operand type for DeRefOf() in some
        situations (Bob Moore)
      + Utilities updates (Bob Moore, Lv Zheng)
      + Disassembler/debugger updates (David Box, Lv Zheng)
      + Build fixes (Colin Ian King, Lv Zheng)
      + Update of copyright notices in all files (Bob Moore)

   - Fix for modalias handling for SPI and I2C devices with
     DT-compatible identification strings (Dan O'Donovan)

   - Fixes for the ACPI EC and button drivers (Lv Zheng)

   - ACPI processor handling fix related to CPU hotplug (online/offline)
     on x86 (Vitaly Kuznetsov)

   - Suspend quirk to save/restore NVS memory over S3 transitions for
     Lenovo G50-45 (Zhang Rui)

   - Message formatting fix for the ACPI APEI code (Colin Ian King)"

* tag 'acpi-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
  ACPICA: Update version to 20170119
  ACPICA: Tools: Update common signon, remove compilation bit width
  ACPICA: Source tree: Update copyright notices to 2017
  ACPICA: Linuxize: Restore and fix Intel compiler build
  x86/ACPI: keep x86_cpu_to_acpiid mapping valid on CPU hotplug
  spi: acpi: Initialize modalias from of_compatible
  i2c: acpi: Initialize info.type from of_compatible
  ACPI / bus: Introduce acpi_of_modalias() equiv of of_modalias_node()
  ACPI: save NVS memory for Lenovo G50-45
  ACPI, APEI, EINJ: fix malformed newline escape
  ACPI / button: Remove lid_init_state=method mode
  ACPI / button: Change default behavior to lid_init_state=open
  ACPI / EC: Use busy polling mode when GPE is not enabled
  ACPI / EC: Remove old CLEAR_ON_RESUME quirk
  ACPICA: Update version to 20161222
  ACPICA: Parser: Update parse info table for some operators
  ACPICA: Fix a problem with recent extra support for control method invocations
  ACPICA: Parser: Allow method invocations as target operands
  ACPICA: Fix for implicit result conversion for the ToXXX functions
  ACPICA: Resources: Not a valid resource if buffer length too long
  ..

Pull power management updates from Rafael Wysocki:
 "The majority of changes go into the Operating Performance Points (OPP)
  framework and cpufreq this time, followed by devfreq and some
  scattered updates all over.

  The OPP changes are mostly related to switching over from RCU-based
  synchronization, that turned out to be overly complicated and
  problematic, to reference counting using krefs.

  In the cpufreq land there are core cleanups, documentation updates, a
  new driver for Broadcom BMIPS SoCs, a new cpufreq-dt sub-driver for TI
  SoCs that require special handling, ARM64 SoCs support for the qoriq
  driver, intel_pstate updates, powernv driver update and assorted
  fixes.

  The devfreq changes are mostly fixes related to the sysfs interface
  and some Exynos drivers updates.

  Apart from that, the cpuidle menu governor will support per-CPU PM QoS
  constraints for the wakeup latency now, some bugs in the wakeup IRQs
  framework are fixed, the generic power domains framework should handle
  asynchronous invocations of *noirq suspend/resume callbacks from now
  on, the analyze_suspend.py script is updated and there is a new tool
  for intel_pstate diagnostics.

  Specifics:

   - Operating Performance Points (OPP) framework fixes, cleanups and
     switch over from RCU-based synchronization to reference counting
     using krefs (Viresh Kumar, Wei Yongjun, Dave Gerlach)

   - cpufreq core cleanups and documentation updates (Viresh Kumar,
     Rafael Wysocki)

   - New cpufreq driver for Broadcom BMIPS SoCs (Markus Mayer)

   - New cpufreq-dt sub-driver for TI SoCs requiring special handling,
     like in the AM335x, AM437x, DRA7x, and AM57x families, along with
     new DT bindings for it (Dave Gerlach, Paul Gortmaker)

   - ARM64 SoCs support for the qoriq cpufreq driver (Tang Yuantian)

   - intel_pstate driver updates including a new sysfs knob to control
     the driver's operation mode and fixes related to the no_turbo sysfs
     knob and the hardware-managed P-states feature support (Rafael
     Wysocki, Srinivas Pandruvada)

   - New interface to export ultra-turbo frequencies for the powernv
     cpufreq driver (Shilpasri Bhat)

   - Assorted fixes for cpufreq drivers (Arnd Bergmann, Dan Carpenter,
     Wei Yongjun)

   - devfreq core fixes, mostly related to the sysfs interface exported
     by it (Chanwoo Choi, Chris Diamand)

   - Updates of the exynos-bus and exynos-ppmu devfreq drivers (Chanwoo
     Choi)

   - Device PM QoS extension to support CPUs and support for per-CPU
     wakeup (device resume) latency constraints in the cpuidle menu
     governor (Alex Shi)

   - Wakeup IRQs framework fixes (Grygorii Strashko)

   - Generic power domains framework update including a fix to make it
     handle asynchronous invocations of *noirq suspend/resume callbacks
     correctly (Ulf Hansson, Geert Uytterhoeven)

   - Assorted fixes and cleanups in the core suspend/hibernate code, PM
     QoS framework and x86 ACPI idle support code (Corentin Labbe, Geert
     Uytterhoeven, Geliang Tang, John Keeping, Nick Desaulniers)

   - Update of the analyze_suspend.py script is updated to version 4.5
     offering multiple improvements (Todd Brandt)

   - New tool for intel_pstate diagnostics using the pstate_sample
     tracepoint (Doug Smythies)"

* tag 'pm-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (85 commits)
  MAINTAINERS: cpufreq: add bmips-cpufreq.c
  PM / QoS: Fix memory leak on resume_latency.notifiers
  PM / Documentation: Spelling s/wrtie/write/
  PM / sleep: Fix test_suspend after sleep state rework
  cpufreq: CPPC: add ACPI_PROCESSOR dependency
  cpufreq: make ti-cpufreq explicitly non-modular
  cpufreq: Do not clear real_cpus mask on policy init
  tools/power/x86: Debug utility for intel_pstate driver
  AnalyzeSuspend: fix drag and zoom bug in javascript
  PM / wakeirq: report a wakeup_event on dedicated wekup irq
  PM / wakeirq: Fix spurious wake-up events for dedicated wakeirqs
  PM / wakeirq: Enable dedicated wakeirq for suspend
  cpufreq: dt: Don't use generic platdev driver for ti-cpufreq platforms
  cpufreq: ti: Add cpufreq driver to determine available OPPs at runtime
  Documentation: dt: add bindings for ti-cpufreq
  PM / OPP: Expose _of_get_opp_desc_node as dev_pm_opp API
  cpufreq: qoriq: Don't look at clock implementation details
  cpufreq: qoriq: add ARM64 SoCs support
  PM / Domains: Provide dummy governors if CONFIG_PM_GENERIC_DOMAINS=n
  cpufreq: brcmstb-avs-cpufreq: remove unnecessary platform_set_drvdata()
  ...

Pull LED updates from Jacek Anaszewski:
 "New features and improvements:

   - add new optional brightness_hw_changed attribute for the LEDs that
     may have their brightness level changed autonomously (outside of
     kernel control) by hardware / firmware. The attribute supports
     userspace notifications through POLLPRI events

   - add led_brightness_hw_mon tool that demonstrates how to use the
     aforementioned feature

   - add LED_ON enum for LEDs that can be only turned on/off, and don't
     allow setting other brightness levels

   - allow for adjusting heartbeat trigger blink brightness level

  Fixes and cleanups:

   - avoid harmless maybe-uninitialized warning in leds-ktd2692.c

   - add context to the existing example entries in common LED bindings
     to make the documentation more clear"

* tag 'leds_for_4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: ledtrig-heartbeat: Make top brightness adjustable
  tools/leds: Add led_hw_brightness_mon program
  leds: class: Add new optional brightness_hw_changed attribute
  leds: ktd2692: avoid harmless maybe-uninitialized warning
  leds: add LED_ON brightness as boolean value
  DT: leds: Improve examples by adding some context

Pull spi updates from Mark Brown:
 "This release is mainly a collection of driver specific updates,
  including a few nice cleanups to make drivers use more core features.

   - automatically use the parent device to allocate DMA buffers if
     there wasn't an explicitly configured device.

   - fixes for leaks on allocation.

   - a small piece of the start of SPI slave support, a feature that's
     been on the cards for over a decade!"

* tag 'spi-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (55 commits)
  spi: spi-ti-qspi: Fix error handling
  spi: spi-ti-qspi: Fix error handling
  spi: lantiq-ssc: activate under COMPILE_TEST
  spi: armada-3700: Remove spi_master_put in a3700_spi_remove()
  spi: ti-qspi: revise ti_qspi_probe() failure flow
  spi: spi-ep93xx: simplify GPIO chip selects
  spi: rspi: Replaces "n" by "len" in qspi_transfer_*()
  spi: rspi: Fixes bogus received byte in qspi_transfer_in()
  spi: bcm-qspi: Remove unnecessary platform_set_drvdata()
  spi: bcm-qspi: Fix bcm_qspi_bspi_read() performance
  spi: lantiq-ssc: add support for Lantiq SSC SPI controller
  spi: s3c64xx: fix inconsistency between binding and driver
  spi: armada-3700: Remove .owner field for driver
  spi: bcm-qspi: Added mspi read fallback in bcm_qspi_flash_read()
  spi: fix device-node leaks
  spi: mediatek: Only do dma for 4-byte aligned buffers
  spi: When no dma_chan map buffers with spi_master's parent
  spi: pca2xx-pci: Allow MSI
  spi: pxa2xx: Prepare for edge-triggered interrupts
  spi: pxa2xx: Add support for Intel Gemini Lake
  ...

Pull regulator updates from Mark Brown:
 "Quite a lot of work going on the core this release, mainly around
  system initialization, but a quiet release for drivers:

   - fixes for registration of multiple regulators on a PMIC from Javier
     Martinez Canillas and Jon Hunter.

   - cleanups to the regulator_get() code from Dmitry Torokhov

   - lots of constifcation of structs from Bhumika Goyal

   - support for Motorola CPCAP regulators from Tony Lindgren"

* tag 'regulator-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (52 commits)
  regulator: core: Resolve supplies before disabling unused regulators
  regulator: Fix regulator_summary for deviceless consumers
  regulator: tps65086: Fix DT node referencing in of_parse_cb
  regulator: tps65086: Fix expected switch DT node names
  regulator: core: simplify _regulator_get()
  regulator: core: have regulator_dev_lookup() return ERR_PTR-encoded errors
  regulator: gpio: correct default type
  regulator: cpcap: Add basic regulator support
  regulator: core: fix typo in regulator_bulk_disable()
  regulator: core: optimize devm_regulator_bulk_get()
  regulator: core: simplify regulator_bulk_force_disable()
  regulator: core: have _regulator_get() accept get_type argument
  regulator: core: remove dead code in _regulator_get()
  regulator: rn5t618: constify regulator_ops structure
  regulator: rc5t583-regulator: constify regulator_ops structure
  regulator: pv88090-regulator: constify regulator_ops structure
  regulator: pv88080-regulator: constify regulator_ops structure
  regulator: pv88060-regulator: constify regulator_ops structure
  regulator: pfuze100-regulator: constify regulator_ops structure
  regulator: pcf50633-regulator: constify regulator_ops structure
  ...

Pull regmap updates from Mark Brown:
 "For v4.11 activity on the regmap API has literally doubled, there are
  two patches this release:

   - fixes from Charles Keepax to make the kerneldoc generate correctly

   - a cleanup from Geliang Tang using rb_entry() rather than open
     coding it with container_of()"

* tag 'regmap-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Fixup the kernel-doc comments on functions/structures
  regmap: use rb_entry()

Pull HID updates from Jiri Kosina:

 - a lot of Wacom driver updates; most notably second generation Intuos
   Pro is now supported, code from Aaron Armstrong Skomra and Jason
   Gerecke

 - Surface 3 and 4 Type Cover Pro support from Daniel Keller, Dennis
   Chen and Yuta Kobayashi

 - hid-rmi is now generic transport driver, used by synaptics-rmi4;
   Support the Lenovo Thinkpad X1 Tablet dock follows on top, from
   Andrew Duggan

 - a few misc bugfixes and improvements here and there

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (29 commits)
  HID: intel-ish-hid: constify device_type structure
  HID: wacom: Bluetooth IRQ for Intuos Pro should handle prox/range
  HID: intel-ish-hid: ipc: check FW status to distinguish ISH resume paths
  HID: multitouch: fix LG Melfas touchscreen
  HID: wacom: don't apply generic settings to old devices
  HID: wacom: generic: support LEDs
  HID: wacom: generic: support generic touch switch
  HID: wacom: generic: add vendor defined touch
  HID: wacom: generic: add support for touchring
  HID: wacom: generic: remove input_event_flag
  HID: wacom: Support 2nd-gen Intuos Pro's Bluetooth classic interface
  HID: wacom: Move WAC_CMD_* into wacom_wac.h
  HID: wacom: Enable HID_GENERIC codepath for Bluetooth devices
  HID: wacom: do not attempt to switch mode while in probe
  HID: wacom: remove warning while disconnecting devices
  HID: wacom: release the resources before leaving despite devm
  HID: whitespace cleanup
  HID: multitouch: enable Surface 3 Type Cover Pro to report multitouch data
  HID: rmi: Support the Lenovo Thinkpad X1 Tablet dock using hid-rmi
  HID: rmi: Handle all Synaptics touchpads using hid-rmi
  ...

Pull livepatching updates from Jiri Kosina:

 - removal of dead code (Kamalesh Babulal)

 - documentation update (Miroslav Benes)

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
  livepatch: doc: remove the limitation for schedule() patching
  powerpc/livepatch: Remove klp_write_module_reloc() stub

Pull IOMMU UPDATES from Joerg Roedel:

 - KVM PCIe/MSI passthrough support on ARM/ARM64

 - introduction of a core representation for individual hardware iommus

 - support for IOMMU privileged mappings as supported by some ARM IOMMUS

 - 16-bit SID support for ARM-SMMUv2

 - stream table optimization for ARM-SMMUv3

 - various fixes and other small improvements

* tag 'iommu-updates-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (61 commits)
  vfio/type1: Fix error return code in vfio_iommu_type1_attach_group()
  iommu: Remove iommu_register_instance interface
  iommu/exynos: Make use of iommu_device_register interface
  iommu/mediatek: Make use of iommu_device_register interface
  iommu/msm: Make use of iommu_device_register interface
  iommu/arm-smmu: Make use of the iommu_register interface
  iommu: Add iommu_device_set_fwnode() interface
  iommu: Make iommu_device_link/unlink take a struct iommu_device
  iommu: Add sysfs bindings for struct iommu_device
  iommu: Introduce new 'struct iommu_device'
  iommu: Rename struct iommu_device
  iommu: Rename iommu_get_instance()
  iommu: Fix static checker warning in iommu_insert_device_resv_regions
  iommu: Avoid unnecessary assignment of dev->iommu_fwspec
  iommu/mediatek: Remove bogus 'select' statements
  iommu/dma: Remove bogus dma_supported() implementation
  iommu/ipmmu-vmsa: Restrict IOMMU Domain Geometry to 32-bit address space
  iommu/vt-d: Don't over-free page table directories
  iommu/vt-d: Tylersburg isoch identity map check is done too late.
  iommu/vt-d: Fix some macros that are incorrectly specified in intel-iommu
  ...

Pull m68k updates from Geert Uytterhoeven:

  - kernel message modernizations and cleanups

  - defconfig updates

  - cleanups

* tag 'm68k-for-v4.11-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/sun3: Remove dead code in paging_init()
  m68k/include: Modernize printing of kernel messages
  m68k/mm: Modernize printing of kernel messages
  m68k/mm: sun3 - Modernize printing of kernel messages
  m68k/kernel: Modernize printing of kernel messages
  m68k/sun3x: Modernize printing of kernel messages
  m68k/sun3: Modernize printing of kernel messages
  m68k/q40: Modernize printing of kernel messages
  m68k/mvme16x: Modernize printing of kernel messages
  m68k/mvme147: Modernize printing of kernel messages
  m68k/bvme6000: Modernize printing of kernel messages
  m68k/68000: Modernize printing of kernel messages
  m68k/atari: Modernize printing of kernel messages
  m68k: Delete an unnecessary variable assignment in sys_cacheflush()
  m68k/mac: Clean up interrupt debug macros and printk statements
  m68k/mac: Remove SHUTUP_SONIC interrupt hack
  m68k/mac: Improve NMI handler
  m68k/defconfig: Update defconfigs for v4.10-rc1
  m68k/mac: Remove unneeded linux/miscdevice.h include

Pull x86 platform updates from Ingo Molnar:
 "Misc platform updates: SGI UV4 support additions, intel-mid Merrifield
  enhancements and purge of old code"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  x86/platform/UV/NMI: Fix uneccessary kABI breakage
  x86/platform/UV: Clean up the NMI code to match current coding style
  x86/platform/UV: Ensure uv_system_init is called when necessary
  x86/platform/UV: Initialize PCH GPP_D_0 NMI Pin to be NMI source
  x86/platform/UV: Verify NMI action is valid, default is standard
  x86/platform/UV: Add basic CPU NMI health check
  x86/platform/UV: Add Support for UV4 Hubless NMIs
  x86/platform/UV: Add Support for UV4 Hubless systems
  x86/platform/UV: Clean up the UV APIC code
  x86/platform/intel-mid: Move watchdog registration to arch_initcall()
  x86/platform/intel-mid: Don't shadow error code of mp_map_gsi_to_irq()
  x86/platform/intel-mid: Allocate RTC interrupt for Merrifield
  x86/ioapic: Return suitable error code in mp_map_gsi_to_irq()
  x86/platform/UV: Fix 2 socket config problem
  x86/platform/UV: Fix panic with missing UVsystab support
  x86/platform/intel-mid: Enable RTC on Intel Merrifield
  x86/platform/intel: Remove PMIC GPIO block support
  x86/platform/intel-mid: Make intel_scu_device_register() static
  x86/platform/intel-mid: Enable GPIO keys on Merrifield
  x86/platform/intel-mid: Get rid of duplication of IPC handler
  ...

Pull x86 mm updates from Ingo Molnar:
 "A laundry list of changes: KASAN improvements/fixes for ptdump, a
  self-test fix, PAT cleanup and wbinvd() avoidance, removal of stale
  code and documentation updates"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/ptdump: Add address marker for KASAN shadow region
  x86/mm/ptdump: Optimize check for W+X mappings for CONFIG_KASAN=y
  x86/mm/pat: Use rb_entry()
  x86/mpx: Re-add MPX to selftests Makefile
  x86/mm: Remove CONFIG_DEBUG_NX_TEST
  x86/mm/cpa: Avoid wbinvd() for PREEMPT
  x86/mm: Improve documentation for low-level device I/O functions

Pull x86 microcode updates from Ingo Molnar:
 "The main changes are further simplification and unification of the
  code between the AMD and Intel microcode loaders, plus other
  simplifications - by Borislav Petkov"

* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode/AMD: Remove struct cont_desc.eq_id
  x86/microcode/AMD: Remove AP scanning optimization
  x86/microcode/AMD: Simplify saving from initrd
  x86/microcode/AMD: Unify load_ucode_amd_ap()
  x86/microcode/AMD: Check patch level only on the BSP
  x86/microcode: Remove local vendor variable
  x86/microcode/AMD: Use find_microcode_in_initrd()
  x86/microcode/AMD: Get rid of global this_equiv_id
  x86/microcode: Decrease CPUID use
  x86/microcode/AMD: Rework container parsing
  x86/microcode/AMD: Extend the container struct
  x86/microcode/AMD: Shorten function parameter's name
  x86/microcode/AMD: Clean up find_equiv_id()
  x86/microcode: Convert to bare minimum MSR accessors
  x86/MSR: Carve out bare minimum accessors

Pull x86 fpu updates from Ingo Molnar:
 "The main changes relate to fixes between (lack of) CPUID and FPU
  detection that should only affect old or weird CPUs, by Andy
  Lutomirski"

* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Fix the "Giving up, no FPU found" test
  x86/fpu: Fix CPUID-less FPU detection
  x86/fpu: Fix "x86/fpu: Legacy x87 FPU detected" message
  x86/cpu: Re-apply forced caps every time CPU caps are re-read
  x86/cpu: Factor out application of forced CPU caps
  x86/cpu: Add X86_FEATURE_CPUID
  x86/fpu/xstate: Move XSAVES state init to a function

Pull x86 cpufeature updates from Ingo Molnar:
 "The main changes in this cycle were related to enable ring-3
  MONITOR/MWAIT instructions support on supported CPUs, by Grzegorz
  Andrejczuk and Piotr Luc"

* 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpufeature: Move RING3MWAIT feature to avoid conflicts
  x86/cpufeature: Enable RING3MWAIT for Knights Mill
  x86/cpufeature: Enable RING3MWAIT for Knights Landing
  x86/cpufeature: Add RING3MWAIT to CPU features
  x86/elf: Add HWCAP2 to expose ring 3 MONITOR/MWAIT
  x86/msr: Add MSR_MISC_FEATURE_ENABLES and RING3MWAIT bit
  x86/cpufeature: Add AVX512_VPOPCNTDQ feature

Pull x86 cleanups from Ingo Molnar:
 "Two small cleanups"

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/traps: Get rid of unnecessary preempt_disable/preempt_enable_no_resched
  x86/pci-calgary: Fix iommu_free() comparison of unsigned expression >= 0

Pull x86 boot updates from Ingo Molnar:
 "Misc updates:

   - fix e820 error handling

   - convert page table setup code from assembly to C

   - fix kexec environment bug

   - ... plus small cleanups"

* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/kconfig: Remove misleading note regarding hibernation and KASLR
  x86/boot: Fix KASLR and memmap= collision
  x86/e820/32: Fix e820_search_gap() error handling on x86-32
  x86/boot/32: Convert the 32-bit pgtable setup code from assembly to C
  x86/e820: Make e820_search_gap() static and remove unused variables

Pull x86 asm update from Ingo Molnar:
 "This adds a new SYSRET testcase"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/x86: Add a selftest for SYSRET to noncanonical addresses

Pull x86 apic changes from Ingo Molnar:
 "The main changes in this cycle were:

   - Re-activate the hw IRQ resend mechanism that was downgraded to a
     sw-resend unintentionally. (Ruslan Ruslichenko)

   - Avoid sporadic spurious hrtimer interrupts (Frederic Weisbecker)"

[ Let's see if the io_apic retrigger ends up surviving this release, it
  got reverted last time because it found problems elsewhere  - Linus ]

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/apic: Fix a typo in a comment line
  x86/ioapic: Restore IO-APIC irq_chip retrigger callback
  x86/apic: Implement set_state_oneshot_stopped() callback
  x86/apic: Fix typos in comments

Pull locking updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Implement wraparound-safe refcount_t and kref_t types based on
     generic atomic primitives (Peter Zijlstra)

   - Improve and fix the ww_mutex code (Nicolai Hähnle)

   - Add self-tests to the ww_mutex code (Chris Wilson)

   - Optimize percpu-rwsems with the 'rcuwait' mechanism (Davidlohr
     Bueso)

   - Micro-optimize the current-task logic all around the core kernel
     (Davidlohr Bueso)

   - Tidy up after recent optimizations: remove stale code and APIs,
     clean up the code (Waiman Long)

   - ... plus misc fixes, updates and cleanups"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
  fork: Fix task_struct alignment
  locking/spinlock/debug: Remove spinlock lockup detection code
  lockdep: Fix incorrect condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS
  lkdtm: Convert to refcount_t testing
  kref: Implement 'struct kref' using refcount_t
  refcount_t: Introduce a special purpose refcount type
  sched/wake_q: Clarify queue reinit comment
  sched/wait, rcuwait: Fix typo in comment
  locking/mutex: Fix lockdep_assert_held() fail
  locking/rtmutex: Flip unlikely() branch to likely() in __rt_mutex_slowlock()
  locking/rwsem: Reinit wake_q after use
  locking/rwsem: Remove unnecessary atomic_long_t casts
  jump_labels: Move header guard #endif down where it belongs
  locking/atomic, kref: Implement kref_put_lock()
  locking/ww_mutex: Turn off __must_check for now
  locking/atomic, kref: Avoid more abuse
  locking/atomic, kref: Use kref_get_unless_zero() more
  locking/atomic, kref: Kill kref_sub()
  locking/atomic, kref: Add kref_read()
  locking/atomic, kref: Add KREF_INIT()
  ...

Pull scheduler updates from Ingo Molnar:
 "The main changes in this (fairly busy) cycle were:

   - There was a class of scheduler bugs related to forgetting to update
     the rq-clock timestamp which can cause weird and hard to debug
     problems, so there's a new debug facility for this: which uncovered
     a whole lot of bugs which convinced us that we want to keep the
     debug facility.

     (Peter Zijlstra, Matt Fleming)

   - Various cputime related updates: eliminate cputime and use u64
     nanoseconds directly, simplify and improve the arch interfaces,
     implement delayed accounting more widely, etc. - (Frederic
     Weisbecker)

   - Move code around for better structure plus cleanups (Ingo Molnar)

   - Move IO schedule accounting deeper into the scheduler plus related
     changes to improve the situation (Tejun Heo)

   - ... plus a round of sched/rt and sched/deadline fixes, plus other
     fixes, updats and cleanups"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (85 commits)
  sched/core: Remove unlikely() annotation from sched_move_task()
  sched/autogroup: Rename auto_group.[ch] to autogroup.[ch]
  sched/topology: Split out scheduler topology code from core.c into topology.c
  sched/core: Remove unnecessary #include headers
  sched/rq_clock: Consolidate the ordering of the rq_clock methods
  delayacct: Include <uapi/linux/taskstats.h>
  sched/core: Clean up comments
  sched/rt: Show the 'sched_rr_timeslice' SCHED_RR timeslice tuning knob in milliseconds
  sched/clock: Add dummy clear_sched_clock_stable() stub function
  sched/cputime: Remove generic asm headers
  sched/cputime: Remove unused nsec_to_cputime()
  s390, sched/cputime: Remove unused cputime definitions
  powerpc, sched/cputime: Remove unused cputime definitions
  s390, sched/cputime: Make arch_cpu_idle_time() to return nsecs
  ia64, sched/cputime: Remove unused cputime definitions
  ia64: Convert vtime to use nsec units directly
  ia64, sched/cputime: Move the nsecs based cputime headers to the last arch using it
  sched/cputime: Remove jiffies based cputime
  sched/cputime, vtime: Return nsecs instead of cputime_t to account
  sched/cputime: Complete nsec conversion of tick based accounting
  ...

Pull RAS updates from Ingo Molnar:
 "The main changes in this cycle were:

  - Assign notifier chain priorities for all RAS related handlers to
    make the ordering explicit (Borislav Petkov)

  - Improve the AMD MCA banks sysfs output (Yazen Ghannam)

  - Various cleanups and restructuring of the x86 RAS code (Borislav
    Petkov)"

* 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ras, EDAC, acpi: Assign MCE notifier handlers a priority
  x86/ras: Get rid of mce_process_work()
  EDAC/mce/amd: Dump TSC value
  EDAC/mce/amd: Unexport amd_decode_mce()
  x86/ras/amd/inj: Change dependency
  x86/ras: Flip the TSC-adding logic
  x86/ras/amd: Make sysfs names of banks more user-friendly
  x86/ras/therm_throt: Do not log a fake MCE for thermal events
  x86/ras/inject: Make it depend on X86_LOCAL_APIC=y

It's very likely the file system independent ioctl name will be
FS_IOC_SHUTDOWN, so let's use the same name for the ext4 ioctl name.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>