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  1. 01 Jun, 2020 1 commit
  3. 29 May, 2020 4 commits
    • Mark Brown's avatar
      Merge series "regmap: provide simple bitops and use them in a driver" from... · 93b92992
      Mark Brown authored 
      Merge series "regmap: provide simple bitops and use them in a driver" from Bartosz Golaszewski <brgl@bgdev.pl>
Bartosz Golaszewski <bgolaszewski@baylibre.com>:

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

I noticed that oftentimes I use regmap_update_bits() for simple bit
setting or clearing. In this case the fourth argument is superfluous as
it's always 0 or equal to the mask argument.

This series proposes to add simple bit operations for setting, clearing
and testing specific bits with regmap.

The second patch uses all three in a driver that got recently picked into
the net-next tree.

The patches obviously target different trees so - if you're ok with
the change itself - I propose you pick the first one into your regmap
tree for v5.8 and then I'll resend the second patch to add the first
user for these macros for v5.9.

v1 -> v2:
- convert the new macros to static inline functions

v2 -> v3:
- drop unneeded ternary operator

Bartosz Golaszewski (2):
  regmap: provide helpers for simple bit operations
  net: ethernet: mtk-star-emac: use regmap bitops

 drivers/base/regmap/regmap.c                  | 22 +++++
 drivers/net/ethernet/mediatek/mtk_star_emac.c | 80 ++++++++-----------
 include/linux/regmap.h                        | 36 +++++++++
 3 files changed, 93 insertions(+), 45 deletions(-)

base-commit: 8f3d9f35

--
2.26.1

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      93b92992
    • Mark Brown's avatar
      Merge series "New DSA driver for VSC9953 Seville switch" from Vladimir Oltean <olteanv@gmail.com>: · 626ceee3
      Mark Brown authored 
      Looking at the Felix and Ocelot drivers, Maxim asked if it would be
possible to use them as a base for a new driver for the switch inside
NXP T1040. Turns out, it is! The result is a driver eerily similar to
Felix.

The biggest challenge seems to be getting register read/write API
generic enough to cover such wild bitfield variations between hardware
generations. There is a patch on the regmap core which I would like to
get in through the networking subsystem, if possible (and if Mark is
ok), since it's a trivial addition.

Maxim Kochetkov (4):
  soc/mscc: ocelot: add MII registers description
  net: mscc: ocelot: convert SYS_PAUSE_CFG register access to regfield
  net: mscc: ocelot: extend watermark encoding function
  net: dsa: ocelot: introduce driver for Seville VSC9953 switch

Vladimir Oltean (7):
  regmap: add helper for per-port regfield initialization
  net: mscc: ocelot: unexport ocelot_probe_port
  net: mscc: ocelot: convert port registers to regmap
  net: mscc: ocelot: convert QSYS_SWITCH_PORT_MODE and SYS_PORT_MODE to
    regfields
  net: dsa: ocelot: create a template for the DSA tags on xmit
  net: mscc: ocelot: split writes to pause frame enable bit and to
    thresholds
  net: mscc: ocelot: disable flow control on NPI interface

 drivers/net/dsa/ocelot/Kconfig           |   12 +
 drivers/net/dsa/ocelot/Makefile          |    6 +
 drivers/net/dsa/ocelot/felix.c           |   49 +-
 drivers/net/dsa/ocelot/felix_vsc9959.c   |   72 +-
 drivers/net/dsa/ocelot/seville.c         |  742 +++++++++++++++
 drivers/net/dsa/ocelot/seville.h         |   50 +
 drivers/net/dsa/ocelot/seville_vsc9953.c | 1064 ++++++++++++++++++++++
 drivers/net/ethernet/mscc/ocelot.c       |   87 +-
 drivers/net/ethernet/mscc/ocelot.h       |    9 +-
 drivers/net/ethernet/mscc/ocelot_board.c |   21 +-
 drivers/net/ethernet/mscc/ocelot_io.c    |   18 +-
 drivers/net/ethernet/mscc/ocelot_regs.c  |   57 ++
 include/linux/regmap.h                   |    8 +
 include/soc/mscc/ocelot.h                |   68 +-
 include/soc/mscc/ocelot_dev.h            |   78 --
 include/soc/mscc/ocelot_qsys.h           |   13 -
 include/soc/mscc/ocelot_sys.h            |   23 -
 net/dsa/tag_ocelot.c                     |   21 +-
 18 files changed, 2196 insertions(+), 202 deletions(-)
 create mode 100644 drivers/net/dsa/ocelot/seville.c
 create mode 100644 drivers/net/dsa/ocelot/seville.h
 create mode 100644 drivers/net/dsa/ocelot/seville_vsc9953.c

base-commit: 8f3d9f35

--
2.25.1
      626ceee3
    • Bartosz Golaszewski's avatar
      regmap: provide helpers for simple bit operations · aa2ff9db
      Bartosz Golaszewski authored 
      In many instances regmap_update_bits() is used for simple bit setting
and clearing. In these cases the last argument is redundant and we can
hide it with a static inline function.

This adds three new helpers for simple bit operations: set_bits,
clear_bits and test_bits (the last one defined as a regular function).
Signed-off-by: default avatarBartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20200528154503.26304-2-brgl@bgdev.plSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      aa2ff9db
    • Vladimir Oltean's avatar
      regmap: add helper for per-port regfield initialization · 8baebfc2
      Vladimir Oltean authored 
      Similar to the standalone regfields, add an initializer for the users
who need to set .id_size and .id_offset in order to use the
regmap_fields_update_bits_base API.
Signed-off-by: default avatarVladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20200527234113.2491988-2-olteanv@gmail.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      8baebfc2
  5. 24 Apr, 2020 1 commit
  7. 20 Apr, 2020 2 commits
  9. 14 Apr, 2020 5 commits
    • Mark Brown's avatar
      Merge series "Add support for Kontron sl28cpld" from Michael Walle <michael@walle.cc>: · 3ada1b17
      Mark Brown authored 
      The Kontron sl28cpld is a board management chip providing gpio, pwm, fan
monitoring and an interrupt controller. For now this controller is used on
the Kontron SMARC-sAL28 board. But because of its flexible nature, it
might also be used on other boards in the future. The individual blocks
(like gpio, pwm, etc) are kept intentionally small. The MFD core driver
then instantiates different (or multiple of the same) blocks. It also
provides the register layout so it might be updated in the future without a
device tree change; and support other boards with a different layout or
functionalities.

See also [1] for more information.

This is my first take of a MFD driver. I don't know whether the subsystem
maintainers should only be CCed on the patches which affect the subsystem
or on all patches for this series. I've chosen the latter so you can get a
more complete picture.

[1] https://lore.kernel.org/linux-devicetree/0e3e8204ab992d75aa07fc36af7e4ab2@walle.cc/

Changes since v1:
 - use of_match_table in all drivers, needed for automatic module loading,
   when using OF_MFD_CELL()
 - add new gpio-regmap.c which adds a generic regmap gpio_chip implemention
 - new patch for reqmap_irq, so we can reuse its implementation
 - remove almost any code from gpio-sl28cpld.c, instead use gpio-regmap and
   regmap-irq
 - change the handling of the mfd core vs device tree nodes; add a new
   property "of_reg" to the mfd_cell struct which, when set, is matched to
   the unit-address of the device tree nodes.
 - fix sl28cpld watchdog when it is not initialized by the bootloader.
   Explicitly set the operation mode.
 - also add support for kontron,assert-wdt-timeout-pin in sl28cpld-wdt.

As suggested by Bartosz Golaszewski:
 - define registers as hex
 - make gpio enum uppercase
 - move parent regmap check before memory allocation
 - use device_property_read_bool() instead of the of_ version
 - mention the gpio flavors in the bindings documentation

As suggested by Guenter Roeck:
 - cleanup #includes and sort them
 - use devm_watchdog_register_device()
 - use watchdog_stop_on_reboot()
 - provide a Documentation/hwmon/sl28cpld.rst
 - cleaned up the weird tristate->bool and I2C=y issue. Instead mention
   that the MFD driver is bool because of the following intc patch
 - removed the SL28CPLD_IRQ typo

As suggested by Rob Herring:
 - combine all dt bindings docs into one patch
 - change the node name for all gpio flavors to "gpio"
 - removed the interrupts-extended rule
 - cleaned up the unit-address space, see above

Michael Walle (16):
  include/linux/ioport.h: add helper to define REG resource constructs
  mfd: mfd-core: Don't overwrite the dma_mask of the child device
  mfd: mfd-core: match device tree node against reg property
  regmap-irq: make it possible to add irq_chip do a specific device node
  dt-bindings: mfd: Add bindings for sl28cpld
  mfd: Add support for Kontron sl28cpld management controller
  irqchip: add sl28cpld interrupt controller support
  watchdog: add support for sl28cpld watchdog
  pwm: add support for sl28cpld PWM controller
  gpio: add a reusable generic gpio_chip using regmap
  gpio: add support for the sl28cpld GPIO controller
  hwmon: add support for the sl28cpld hardware monitoring controller
  arm64: dts: freescale: sl28: enable sl28cpld
  arm64: dts: freescale: sl28: map GPIOs to input events
  arm64: dts: freescale: sl28: enable LED support
  arm64: dts: freescale: sl28: enable fan support

 .../bindings/gpio/kontron,sl28cpld-gpio.yaml  |  51 +++
 .../hwmon/kontron,sl28cpld-hwmon.yaml         |  27 ++
 .../bindings/mfd/kontron,sl28cpld.yaml        | 162 +++++++++
 .../bindings/pwm/kontron,sl28cpld-pwm.yaml    |  35 ++
 .../watchdog/kontron,sl28cpld-wdt.yaml        |  35 ++
 Documentation/hwmon/sl28cpld.rst              |  36 ++
 .../fsl-ls1028a-kontron-kbox-a-230-ls.dts     |  14 +
 .../fsl-ls1028a-kontron-sl28-var3-ads2.dts    |   9 +
 .../freescale/fsl-ls1028a-kontron-sl28.dts    | 124 +++++++
 drivers/base/regmap/regmap-irq.c              |  84 ++++-
 drivers/gpio/Kconfig                          |  15 +
 drivers/gpio/Makefile                         |   2 +
 drivers/gpio/gpio-regmap.c                    | 321 ++++++++++++++++++
 drivers/gpio/gpio-sl28cpld.c                  | 187 ++++++++++
 drivers/hwmon/Kconfig                         |  10 +
 drivers/hwmon/Makefile                        |   1 +
 drivers/hwmon/sl28cpld-hwmon.c                | 152 +++++++++
 drivers/irqchip/Kconfig                       |   3 +
 drivers/irqchip/Makefile                      |   1 +
 drivers/irqchip/irq-sl28cpld.c                |  99 ++++++
 drivers/mfd/Kconfig                           |  21 ++
 drivers/mfd/Makefile                          |   2 +
 drivers/mfd/mfd-core.c                        |  31 +-
 drivers/mfd/sl28cpld.c                        | 154 +++++++++
 drivers/pwm/Kconfig                           |  10 +
 drivers/pwm/Makefile                          |   1 +
 drivers/pwm/pwm-sl28cpld.c                    | 204 +++++++++++
 drivers/watchdog/Kconfig                      |  11 +
 drivers/watchdog/Makefile                     |   1 +
 drivers/watchdog/sl28cpld_wdt.c               | 242 +++++++++++++
 include/linux/gpio-regmap.h                   |  88 +++++
 include/linux/ioport.h                        |   5 +
 include/linux/mfd/core.h                      |  26 +-
 include/linux/regmap.h                        |  10 +
 34 files changed, 2142 insertions(+), 32 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/kontron,sl28cpld-gpio.yaml
 create mode 100644 Documentation/devicetree/bindings/hwmon/kontron,sl28cpld-hwmon.yaml
 create mode 100644 Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml
 create mode 100644 Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml
 create mode 100644 Documentation/devicetree/bindings/watchdog/kontron,sl28cpld-wdt.yaml
 create mode 100644 Documentation/hwmon/sl28cpld.rst
 create mode 100644 drivers/gpio/gpio-regmap.c
 create mode 100644 drivers/gpio/gpio-sl28cpld.c
 create mode 100644 drivers/hwmon/sl28cpld-hwmon.c
 create mode 100644 drivers/irqchip/irq-sl28cpld.c
 create mode 100644 drivers/mfd/sl28cpld.c
 create mode 100644 drivers/pwm/pwm-sl28cpld.c
 create mode 100644 drivers/watchdog/sl28cpld_wdt.c
 create mode 100644 include/linux/gpio-regmap.h

--
2.20.1

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      3ada1b17
    • Mark Brown's avatar
      Merge series "Add new reg_update_bits() support" from Baolin Wang <baolin.wang7@gmail.com>: · 44753373
      Mark Brown authored 
      The Spreadtrum platform uses a special set/clear method to update
registers' bits, thus this patch set registers a physical regmap
bus into syscon core to support this feature instead of using the
MMIO bus, which is not a physical regmap bus.

Any comments are welcome. Thanks.

Changes from RFC v1:
 - Add new helper to registers a physical regmap bus instead of
 using the MMIO bus.

Baolin Wang (3):
  mfd: syscon: Support physical regmap bus
  regmap: Add bus reg_update_bits() support
  soc: sprd: Add Spreadtrum special bits updating support

 drivers/base/regmap/regmap.c   |  1 +
 drivers/mfd/syscon.c           | 16 ++++++-
 drivers/soc/Kconfig            |  1 +
 drivers/soc/Makefile           |  1 +
 drivers/soc/sprd/Kconfig       | 16 +++++++
 drivers/soc/sprd/Makefile      |  2 +
 drivers/soc/sprd/sprd_syscon.c | 76 ++++++++++++++++++++++++++++++++++
 include/linux/mfd/syscon.h     |  7 ++++
 8 files changed, 118 insertions(+), 2 deletions(-)
 create mode 100644 drivers/soc/sprd/Kconfig
 create mode 100644 drivers/soc/sprd/Makefile
 create mode 100644 drivers/soc/sprd/sprd_syscon.c

--
2.17.1
      44753373
    • Marco Felsch's avatar
      regmap: add reg_sequence helpers · bd3ddb49
      Marco Felsch authored 
      Add helper to make it easier to define a reg_sequence array.
Signed-off-by: default avatarMarco Felsch <m.felsch@pengutronix.de>
Link: https://lore.kernel.org/r/20200402084111.30123-1-m.felsch@pengutronix.deSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      bd3ddb49
    • Michael Walle's avatar
      regmap-irq: make it possible to add irq_chip do a specific device node · 12479382
      Michael Walle authored 
      Add a new function regmap_add_irq_chip_np() with its corresponding
devm_regmap_add_irq_chip_np() variant. Sometimes one want to register
the IRQ domain on a different device node that the one of the regmap
node. For example when using a MFD where there are different interrupt
controllers and particularly for the generic regmap gpio_chip/irq_chip
driver. In this case it is not desireable to have the IRQ domain on
the parent node.
Signed-off-by: default avatarMichael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20200402203656.27047-5-michael@walle.ccSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      12479382
    • Baolin Wang's avatar
      regmap: Add bus reg_update_bits() support · 80215f13
      Baolin Wang authored 
      Add reg_update_bits() support in case some platforms use a special method
to update bits of registers.
Signed-off-by: default avatarBaolin Wang <baolin.wang7@gmail.com>
Link: https://lore.kernel.org/r/df32fd0529957d1e7e26ba1465723f16cfbe92c8.1586757922.git.baolin.wang7@gmail.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
      80215f13
  11. 12 Apr, 2020 10 commits
    • Linus Torvalds's avatar
      Linux 5.7-rc1 · 8f3d9f35
      Linus Torvalds authored
      8f3d9f35
    • Linus Torvalds's avatar
      MAINTAINERS: sort field names for all entries · 3b50142d
      Linus Torvalds authored 
      This sorts the actual field names too, potentially causing even more
chaos and confusion at merge time if you have edited the MAINTAINERS
file.  But the end result is a more consistent layout, and hopefully
it's a one-time pain minimized by doing this just before the -rc1
release.

This was entirely scripted:

  ./scripts/parse-maintainers.pl --input=MAINTAINERS --output=MAINTAINERS --order
Requested-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3b50142d
    • Linus Torvalds's avatar
      MAINTAINERS: sort entries by entry name · 4400b7d6
      Linus Torvalds authored 
      They are all supposed to be sorted, but people who add new entries don't
always know the alphabet.  Plus sometimes the entry names get edited,
and people don't then re-order the entry.

Let's see how painful this will be for merging purposes (the MAINTAINERS
file is often edited in various different trees), but Joe claims there's
relatively few patches in -next that touch this, and doing it just
before -rc1 is likely the best time.  Fingers crossed.

This was scripted with

  /scripts/parse-maintainers.pl --input=MAINTAINERS --output=MAINTAINERS

but then I also ended up manually upper-casing a few entry names that
stood out when looking at the end result.
Requested-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4400b7d6
    • Linus Torvalds's avatar
      Merge tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 4f8a3cc1
      Linus Torvalds authored 
      Pull x86 fixes from Thomas Gleixner:
 "A set of three patches to fix the fallout of the newly added split
  lock detection feature.

  It addressed the case where a KVM guest triggers a split lock #AC and
  KVM reinjects it into the guest which is not prepared to handle it.

  Add proper sanity checks which prevent the unconditional injection
  into the guest and handles the #AC on the host side in the same way as
  user space detections are handled. Depending on the detection mode it
  either warns and disables detection for the task or kills the task if
  the mode is set to fatal"

* tag 'x86-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  KVM: VMX: Extend VMXs #AC interceptor to handle split lock #AC in guest
  KVM: x86: Emulate split-lock access as a write in emulator
  x86/split_lock: Provide handle_guest_split_lock()
      4f8a3cc1
    • Linus Torvalds's avatar
      Merge tag 'timers-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 0785249f
      Linus Torvalds authored 
      Pull time(keeping) updates from Thomas Gleixner:

 - Fix the time_for_children symlink in /proc/$PID/ so it properly
   reflects that it part of the 'time' namespace

 - Add the missing userns limit for the allowed number of time
   namespaces, which was half defined but the actual array member was
   not added. This went unnoticed as the array has an exessive empty
   member at the end but introduced a user visible regression as the
   output was corrupted.

 - Prevent further silent ucount corruption by adding a BUILD_BUG_ON()
   to catch half updated data.

* tag 'timers-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  ucount: Make sure ucounts in /proc/sys/user don't regress again
  time/namespace: Add max_time_namespaces ucount
  time/namespace: Fix time_for_children symlink
      0785249f
    • Linus Torvalds's avatar
      Merge tag 'sched-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 590680d1
      Linus Torvalds authored 
      Pull scheduler fixes/updates from Thomas Gleixner:

 - Deduplicate the average computations in the scheduler core and the
   fair class code.

 - Fix a raise between runtime distribution and assignement which can
   cause exceeding the quota by up to 70%.

 - Prevent negative results in the imbalanace calculation

 - Remove a stale warning in the workqueue code which can be triggered
   since the call site was moved out of preempt disabled code. It's a
   false positive.

 - Deduplicate the print macros for procfs

 - Add the ucmap values to the SCHED_DEBUG procfs output for completness

* tag 'sched-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/debug: Add task uclamp values to SCHED_DEBUG procfs
  sched/debug: Factor out printing formats into common macros
  sched/debug: Remove redundant macro define
  sched/core: Remove unused rq::last_load_update_tick
  workqueue: Remove the warning in wq_worker_sleeping()
  sched/fair: Fix negative imbalance in imbalance calculation
  sched/fair: Fix race between runtime distribution and assignment
  sched/fair: Align rq->avg_idle and rq->avg_scan_cost
      590680d1
    • Linus Torvalds's avatar
      Merge tag 'perf-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 20e2aa81
      Linus Torvalds authored 
      Pull perf fixes from Thomas Gleixner:
 "Three fixes/updates for perf:

   - Fix the perf event cgroup tracking which tries to track the cgroup
     even for disabled events.

   - Add Ice Lake server support for uncore events

   - Disable pagefaults when retrieving the physical address in the
     sampling code"

* tag 'perf-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Disable page faults when getting phys address
  perf/x86/intel/uncore: Add Ice Lake server uncore support
  perf/cgroup: Correct indirection in perf_less_group_idx()
  perf/core: Fix event cgroup tracking
      20e2aa81
    • Linus Torvalds's avatar
      Merge tag 'locking-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 652fa53c
      Linus Torvalds authored 
      Pull locking fixes from Thomas Gleixner:
 "Three small fixes/updates for the locking core code:

   - Plug a task struct reference leak in the percpu rswem
     implementation.

   - Document the refcount interaction with PID_MAX_LIMIT

   - Improve the 'invalid wait context' data dump in lockdep so it
     contains all information which is required to decode the problem"

* tag 'locking-urgent-2020-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/lockdep: Improve 'invalid wait context' splat
  locking/refcount: Document interaction with PID_MAX_LIMIT
  locking/percpu-rwsem: Fix a task_struct refcount
      652fa53c
    • Linus Torvalds's avatar
      Merge tag '5.7-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6 · 4119bf9f
      Linus Torvalds authored 
      Pull cifs fixes from Steve French:
 "Ten cifs/smb fixes:

   - five RDMA (smbdirect) related fixes

   - add experimental support for swap over SMB3 mounts

   - also a fix which improves performance of signed connections"

* tag '5.7-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  smb3: enable swap on SMB3 mounts
  smb3: change noisy error message to FYI
  smb3: smbdirect support can be configured by default
  cifs: smbd: Do not schedule work to send immediate packet on every receive
  cifs: smbd: Properly process errors on ib_post_send
  cifs: Allocate crypto structures on the fly for calculating signatures of incoming packets
  cifs: smbd: Update receive credits before sending and deal with credits roll back on failure before sending
  cifs: smbd: Check send queue size before posting a send
  cifs: smbd: Merge code to track pending packets
  cifs: ignore cached share root handle closing errors
      4119bf9f
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-5.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs · 50bda5fa
      Linus Torvalds authored 
      Pull NFS client bugfix from Trond Myklebust:
 "Fix an RCU read lock leakage in pnfs_alloc_ds_commits_list()"

* tag 'nfs-for-5.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  pNFS: Fix RCU lock leakage
      50bda5fa
  13. 11 Apr, 2020 14 commits
  15. 10 Apr, 2020 3 commits
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