[GIT PULL] libnvdimm for 4.17

From: Williams, Dan J
Date: Tue Apr 10 2018 - 01:13:00 EST

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Hi Linus, please pull from:

git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm tags/libnvdimm-for-4.17

...to receive the libnvdimm update for 4.17.

This cycle was was not something I ever want to repeat as there were
several late changes that have only now just settled. Half of the
branch up to commit d2c997c0f145 +ACI-fs, dax: use page-+AD4-mapping to
warn...+ACI- have been in -next for several releases. The of+AF8-pmem driver
and the address range scrub rework were late arrivals, and the dax work
was scaled back at the last moment.

The of+AF8-pmem driver missed a previous merge window due to an oversight.
A sense of obligation to rectify that miss is why it is included for
4.17. It has acks from PowerPC folks. Stephen reported a build failure
that only occurs when merging it with your latest tree, for now I have
fixed that up by disabling modular builds of of+AF8-pmem. A test merge with
your tree has received a build success report from the 0day robot over
156 configs.

An initial version of the ARS rework was submitted before the merge
window. It is self contained to libnvdimm, a net code reduction, and
passing all unit tests.

The filesystem-dax changes are based on the wait+AF8-var+AF8-event()
functionality from tip/sched/core. However, late review feedback showed
that those changes regressed truncate performance to a large degress.
The branch was rewound to drop the truncate behavior change and now
only includes preparation patches and cleanups (with full acks and
reviews). The finalization of this dax-dma-vs-trnucate work will need
to wait for 4.18.

git picked the wait+AF8-var+AF8-event() baseline for the diffstat, so I also
include the diffstat of the test merge below.

The following changes since commit 3eb2ce825ea1ad89d20f7a3b5780df850e4be274:

Linux 4.16-rc7 (2018-03-25 12:44:30 -1000)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm tags/libnvdimm-for-4.17

for you to fetch changes up to e13e75b86ef2f88e3a47d672dd4c52a293efb95b:

Merge branch 'for-4.17/dax' into libnvdimm-for-next (2018-04-09 10:50:17 -0700)

----------------------------------------------------------------
libnvdimm for 4.17

+ACo- A rework of the filesytem-dax implementation provides for detection of
unmap operations (truncate / hole punch) colliding with in-progress
device-DMA. A fix for these collisions remains a work-in-progress
pending resolution of truncate latency and starvation regressions.

+ACo- The of+AF8-pmem driver expands the users of libnvdimm outside of x86 and
ACPI to describe an implementation of persistent memory on PowerPC with
Open Firmware / Device tree.

+ACo- Address Range Scrub (ARS) handling is completely rewritten to account for
the fact that ARS may run for 100s of seconds and there is no platform
defined way to cancel it. ARS will now no longer block namespace
initialization.

+ACo- The NVDIMM Namespace Label implementation is updated to handle label
areas as small as 1K, down from 128K.

+ACo- Miscellaneous cleanups and updates to unit test infrastructure.

----------------------------------------------------------------
Dan Williams (26):
libnvdimm: remove redundant +AF8AXw-func+AF8AXw- in dev+AF8-dbg
device-dax: remove redundant +AF8AXw-func+AF8AXw- in dev+AF8-dbg
nfit: skip region registration for incomplete control regions
acpi, nfit: rework NVDIMM leaf method detection
dax: store pfns in the radix
fs, dax: prepare for dax-specific address+AF8-space+AF8-operations
block, dax: remove dead code in blkdev+AF8-writepages()
xfs, dax: introduce xfs+AF8-dax+AF8-aops
ext4, dax: introduce ext4+AF8-dax+AF8-aops
nfit: fix region registration vs block-data-window ranges
ext2, dax: introduce ext2+AF8-dax+AF8-aops
fs, dax: use page-+AD4-mapping to warn if truncate collides with a busy page
dax: introduce CONFIG+AF8-DAX+AF8-DRIVER
dax, dm: allow device-mapper to operate without dax support
nfit, address-range-scrub: fix scrub in-progress reporting
libnvdimm: add an api to cast a 'struct nd+AF8-region' to its 'struct device'
nfit, address-range-scrub: introduce nfit+AF8-spa-+AD4-ars+AF8-state
libnvdimm, dimm: fix dpa reservation vs uninitialized label area
libnvdimm, namespace: use a safe lookup for dimm device name
libnvdimm, region: quiet region probe
nfit, address-range-scrub: determine one platform max+AF8-ars value
nfit, address-range-scrub: rework and simplify ARS state machine
nfit, address-range-scrub: add module option to skip initial ars
libnvdimm, of+AF8-pmem: workaround OF+AF8-NUMA+AD0-n build error
Merge branch 'for-4.17/libnvdimm' into libnvdimm-for-next
Merge branch 'for-4.17/dax' into libnvdimm-for-next

Johannes Thumshirn (4):
acpi, nfit: remove redundant +AF8AXw-func+AF8AXw- in dev+AF8-dbg
libnvdimm: provide module+AF8-nd+AF8-driver wrapper
libnvdimm, pmem: use module+AF8-nd+AF8-driver
device-dax: use module+AF8-nd+AF8-driver

Oliver O'Halloran (4):
libnvdimm: Add of+AF8-node to region and bus descriptors
libnvdimm: Add device-tree based driver
doc/devicetree: Persistent memory region bindings
powerpc/powernv: Create platform devs for nvdimm buses

Ross Zwisler (3):
nfit+AF8-test: improve structure offset handling
nfit+AF8-test: fix buffer overrun, add sanity check
nfit+AF8-test: prevent parsing error of nfit+AF8-test.0

Toshi Kani (2):
libnvdimm, label: change min label storage size per UEFI 2.7
libnvdimm, label: change nvdimm+AF8-num+AF8-label+AF8-slots per UEFI 2.7

Vishal Verma (2):
libnvdimm, testing: Add emulation for smart injection commands
libnvdimm, testing: update the default smart ctrl+AF8-temperature

Documentation/admin-guide/kernel-parameters.txt +AHw- 11 +-
.../devicetree/bindings/pmem/pmem-region.txt +AHw- 65 +-+-
MAINTAINERS +AHw- 8 +-
arch/powerpc/platforms/powernv/opal.c +AHw- 3 +-
drivers/acpi/nfit/core.c +AHw- 679 +-+-+-+-+-+-+-+-+-+------------
drivers/acpi/nfit/mce.c +AHw- 5 +--
drivers/acpi/nfit/nfit.h +AHw- 22 +--
drivers/dax/Kconfig +AHw- 5 +--
drivers/dax/device.c +AHw- 38 +--
drivers/dax/pmem.c +AHw- 18 +--
drivers/dax/super.c +AHw- 15 +--
drivers/md/Kconfig +AHw- 2 +--
drivers/md/dm-linear.c +AHw- 6 +-
drivers/md/dm-log-writes.c +AHw- 95 +---
drivers/md/dm-stripe.c +AHw- 6 +-
drivers/md/dm.c +AHw- 10 +--
drivers/nvdimm/Kconfig +AHw- 13 +--
drivers/nvdimm/Makefile +AHw- 1 +-
drivers/nvdimm/btt+AF8-devs.c +AHw- 21 +--
drivers/nvdimm/bus.c +AHw- 14 +--
drivers/nvdimm/claim.c +AHw- 2 +--
drivers/nvdimm/core.c +AHw- 6 +--
drivers/nvdimm/dax+AF8-devs.c +AHw- 5 +--
drivers/nvdimm/dimm.c +AHw- 8 +--
drivers/nvdimm/dimm+AF8-devs.c +AHw- 7 +--
drivers/nvdimm/label.c +AHw- 85 +---
drivers/nvdimm/label.h +AHw- 2 +--
drivers/nvdimm/namespace+AF8-devs.c +AHw- 42 +--
drivers/nvdimm/nd.h +AHw- 1 -
drivers/nvdimm/of+AF8-pmem.c +AHw- 119 +-+-+-+-
drivers/nvdimm/pfn+AF8-devs.c +AHw- 25 +--
drivers/nvdimm/pmem.c +AHw- 14 +--
drivers/nvdimm/region.c +AHw- 4 +--
drivers/nvdimm/region+AF8-devs.c +AHw- 9 +-
drivers/s390/block/Kconfig +AHw- 2 +--
fs/block+AF8-dev.c +AHw- 5 -
fs/dax.c +AHw- 146 +-+-+---
fs/ext2/ext2.h +AHw- 1 +-
fs/ext2/inode.c +AHw- 46 +--
fs/ext2/namei.c +AHw- 18 +--
fs/ext4/inode.c +AHw- 42 +--
fs/libfs.c +AHw- 39 +-+-
fs/xfs/xfs+AF8-aops.c +AHw- 34 +--
fs/xfs/xfs+AF8-aops.h +AHw- 1 +-
fs/xfs/xfs+AF8-iops.c +AHw- 5 +--
include/linux/dax.h +AHw- 42 +--
include/linux/fs.h +AHw- 4 +-
include/linux/libnvdimm.h +AHw- 4 +-
include/linux/nd.h +AHw- 6 +-
include/linux/sched/deadline.h +AHw- 6 -
include/linux/sched/isolation.h +AHw- 1 +-
include/linux/sched/nohz.h +AHw- 4 -
include/linux/tick.h +AHw- 4 +--
include/linux/wait+AF8-bit.h +AHw- 70 +-+-+-
kernel/sched/Makefile +AHw- 5 +--
kernel/sched/autogroup.c +AHw- 21 +--
kernel/sched/autogroup.h +AHw- 12 +--
kernel/sched/clock.c +AHw- 36 +--
kernel/sched/completion.c +AHw- 5 +--
kernel/sched/core.c +AHw- 165 +-+-+---
kernel/sched/cpuacct.c +AHw- 33 +--
kernel/sched/cpudeadline.c +AHw- 23 +--
kernel/sched/cpudeadline.h +AHw- 29 +--
kernel/sched/cpufreq.c +AHw- 1 -
kernel/sched/cpufreq+AF8-schedutil.c +AHw- 137 +-+----
kernel/sched/cpupri.c +AHw- 15 +--
kernel/sched/cpupri.h +AHw- 25 +--
kernel/sched/cputime.c +AHw- 58 +--
kernel/sched/deadline.c +AHw- 78 +---
kernel/sched/debug.c +AHw- 99 +-+--
kernel/sched/fair.c +AHw- 299 +-+-+-+-+-----
kernel/sched/idle.c +AHw- 142 +-+-+-+--
kernel/sched/idle+AF8-task.c +AHw- 110 ----
kernel/sched/isolation.c +AHw- 14 +--
kernel/sched/loadavg.c +AHw- 34 +--
kernel/sched/membarrier.c +AHw- 27 +--
kernel/sched/rt.c +AHw- 51 +--
kernel/sched/sched.h +AHw- 623 +-+-+-+-+-+-+-+-+-+----------
kernel/sched/stats.c +AHw- 20 +--
kernel/sched/stats.h +AHw- 86 +-+--
kernel/sched/stop+AF8-task.c +AHw- 11 +--
kernel/sched/swait.c +AHw- 6 +--
kernel/sched/topology.c +AHw- 46 +--
kernel/sched/wait.c +AHw- 13 +--
kernel/sched/wait+AF8-bit.c +AHw- 71 +-+--
kernel/time/tick-sched.c +AHw- 15 +--
kernel/workqueue.c +AHw- 3 +--
tools/testing/nvdimm/test/nfit.c +AHw- 239 +-+-+-+-+----
tools/testing/nvdimm/test/nfit+AF8-test.h +AHw- 16 +-
89 files changed, 2513 insertions(+-), 1901 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pmem/pmem-region.txt
create mode 100644 drivers/nvdimm/of+AF8-pmem.c
delete mode 100644 kernel/sched/idle+AF8-task.c

---
Test merge diffstat:

.../devicetree/bindings/pmem/pmem-region.txt +AHw- 65 +-+-
MAINTAINERS +AHw- 8 +-
arch/powerpc/platforms/powernv/opal.c +AHw- 3 +-
drivers/acpi/nfit/core.c +AHw- 679 +-+-+-+-+-+-+-+-+-+------------
drivers/acpi/nfit/mce.c +AHw- 5 +--
drivers/acpi/nfit/nfit.h +AHw- 22 +--
drivers/dax/Kconfig +AHw- 5 +--
drivers/dax/device.c +AHw- 38 +--
drivers/dax/pmem.c +AHw- 18 +--
drivers/dax/super.c +AHw- 15 +--
drivers/md/Kconfig +AHw- 2 +--
drivers/md/dm-linear.c +AHw- 6 +-
drivers/md/dm-log-writes.c +AHw- 95 +---
drivers/md/dm-stripe.c +AHw- 6 +-
drivers/md/dm.c +AHw- 10 +--
drivers/nvdimm/Kconfig +AHw- 13 +--
drivers/nvdimm/Makefile +AHw- 1 +-
drivers/nvdimm/btt+AF8-devs.c +AHw- 21 +--
drivers/nvdimm/bus.c +AHw- 14 +--
drivers/nvdimm/claim.c +AHw- 2 +--
drivers/nvdimm/core.c +AHw- 6 +--
drivers/nvdimm/dax+AF8-devs.c +AHw- 5 +--
drivers/nvdimm/dimm.c +AHw- 8 +--
drivers/nvdimm/dimm+AF8-devs.c +AHw- 7 +--
drivers/nvdimm/label.c +AHw- 85 +---
drivers/nvdimm/label.h +AHw- 2 +--
drivers/nvdimm/namespace+AF8-devs.c +AHw- 42 +--
drivers/nvdimm/nd.h +AHw- 1 -
drivers/nvdimm/of+AF8-pmem.c +AHw- 119 +-+-+-+-
drivers/nvdimm/pfn+AF8-devs.c +AHw- 25 +--
drivers/nvdimm/pmem.c +AHw- 14 +--
drivers/nvdimm/region.c +AHw- 4 +--
drivers/nvdimm/region+AF8-devs.c +AHw- 9 +-
drivers/s390/block/Kconfig +AHw- 2 +--
fs/block+AF8-dev.c +AHw- 5 -
fs/dax.c +AHw- 146 +-+-+---
fs/ext2/ext2.h +AHw- 1 +-
fs/ext2/inode.c +AHw- 46 +--
fs/ext2/namei.c +AHw- 18 +--
fs/ext4/inode.c +AHw- 42 +--
fs/libfs.c +AHw- 39 +-+-
fs/xfs/xfs+AF8-aops.c +AHw- 34 +--
fs/xfs/xfs+AF8-aops.h +AHw- 1 +-
fs/xfs/xfs+AF8-iops.c +AHw- 5 +--
include/linux/dax.h +AHw- 42 +--
include/linux/fs.h +AHw- 4 +-
include/linux/libnvdimm.h +AHw- 4 +-
include/linux/nd.h +AHw- 6 +-
tools/testing/nvdimm/test/nfit.c +AHw- 239 +-+-+-+-+----
tools/testing/nvdimm/test/nfit+AF8-test.h +AHw- 16 +-
50 files changed, 1217 insertions(+-), 788 deletions(-)

Next message: Philippe Cornu: "[PATCH 1/2] dt-bindings/display/bridge: sii902x: add optional power supplies"
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