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This patch is reworked from an earlier patch that Dan has posted:
https://patchwork.kernel.org/patch/10131727/
VM_MIXEDMAP is used by dax to direct mm paths like vm_normal_page() that
the memory page it is dealing with is not typical memory from the linear
map. The get_user_pages_fast() path, since it does not resolve the vma,
is already using {pte,pmd}_devmap() as a stand-in for VM_MIXEDMAP, so we
use that as a VM_MIXEDMAP replacement in some locations. In the cases
where there is no pte to consult we fallback to using vma_is_dax() to
detect the VM_MIXEDMAP special case.
Now that we have explicit driver pfn_t-flag opt-in/opt-out for
get_user_pages() support for DAX we can stop setting VM_MIXEDMAP. This
also means we no longer need to worry about safely manipulating vm_flags
in a future where we support dynamically changing the dax mode of a
file.
DAX should also now be supported with madvise_behavior(), vma_merge(),
and copy_page_range().
This patch has been tested against ndctl unit test. It has also been
tested against xfstests commit: 625515d using fake pmem created by
memmap and no additional issues have been observed.
Link: http://lkml.kernel.org/r/152847720311.55924.16999195879201817653.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
Pull orangefs updates from Mike Marshall:
"Orangefs: one cleanup and Souptick's vm_fault_t patch:
- add new return type vm_fault_t (Souptick Joarder)
- remove redundant pointer (Colin Ian King)"
* tag 'for-linus-4.19-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
orangefs: remove redundant pointer orangefs_inode
orangefs: Adding new return type vm_fault_t
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Pull jfs update from David Kleikamp:
"Just one jfs patch for 4.19"
* tag 'jfs-4.19' of git://github.com/kleikamp/linux-shaggy:
jfs: use time64_t for otime
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git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- iomap support for buffered writes and for direct I/O
- two patches that reduce the size of struct gfs2_inode
- lots of fixes and cleanups
* tag 'gfs2-4.19.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (25 commits)
gfs2: eliminate update_rgrp_lvb_unlinked
gfs2: Fix gfs2_testbit to use clone bitmaps
gfs2: Get rid of gfs2_ea_strlen
gfs2: cleanup: call gfs2_rgrp_ondisk2lvb from gfs2_rgrp_out
gfs2: Special-case rindex for gfs2_grow
GFS2: rgrp free blocks used incorrectly
gfs2: remove redundant variable 'moved'
gfs2: use iomap_readpage for blocksize == PAGE_SIZE
gfs2: Use iomap for stuffed direct I/O reads
gfs2: fallocate_chunk: Always initialize struct iomap
GFS2: Fix recovery issues for spectators
fs: gfs2: Adding new return type vm_fault_t
gfs2: using posix_acl_xattr_size instead of posix_acl_to_xattr
gfs2: Don't reject a supposedly full bitmap if we have blocks reserved
gfs2: Eliminate redundant ip->i_rgd
gfs2: Stop messing with ip->i_rgd in the rlist code
gfs2: Remove gfs2_write_{begin,end}
gfs2: iomap direct I/O support
gfs2: gfs2_extent_length cleanup
gfs2: iomap buffered write support
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Pull SCSI updates from James Bottomley:
"This is mostly updates to the usual drivers: mpt3sas, lpfc, qla2xxx,
hisi_sas, smartpqi, megaraid_sas, arcmsr.
In addition, with the continuing absence of Nic we have target updates
for tcmu and target core (all with reviews and acks).
The biggest observable change is going to be that we're (again) trying
to switch to mulitqueue as the default (a user can still override the
setting on the kernel command line).
Other major core stuff is the removal of the remaining Microchannel
drivers, an update of the internal timers and some reworks of
completion and result handling"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (203 commits)
scsi: core: use blk_mq_run_hw_queues in scsi_kick_queue
scsi: ufs: remove unnecessary query(DM) UPIU trace
scsi: qla2xxx: Fix issue reported by static checker for qla2x00_els_dcmd2_sp_done()
scsi: aacraid: Spelling fix in comment
scsi: mpt3sas: Fix calltrace observed while running IO & reset
scsi: aic94xx: fix an error code in aic94xx_init()
scsi: st: remove redundant pointer STbuffer
scsi: qla2xxx: Update driver version to 10.00.00.08-k
scsi: qla2xxx: Migrate NVME N2N handling into state machine
scsi: qla2xxx: Save frame payload size from ICB
scsi: qla2xxx: Fix stalled relogin
scsi: qla2xxx: Fix race between switch cmd completion and timeout
scsi: qla2xxx: Fix Management Server NPort handle reservation logic
scsi: qla2xxx: Flush mailbox commands on chip reset
scsi: qla2xxx: Fix unintended Logout
scsi: qla2xxx: Fix session state stuck in Get Port DB
scsi: qla2xxx: Fix redundant fc_rport registration
scsi: qla2xxx: Silent erroneous message
scsi: qla2xxx: Prevent sysfs access when chip is down
scsi: qla2xxx: Add longer window for chip reset
...
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- new Socionext MN88443x ISDB-S/T demodulator driver: mn88443x
- new sensor drivers: ak7375, ov2680 and rj54n1cb0c
- an old soc-camera sensor driver converted to the V4L2 framework:
mt9v111
- a new Voice-Coil Motor (VCM) driver: dw9807-vcm
- some cleanups at cx25821, removing legacy unused code
- some improvements at ddbridge driver
- new platform driver: vicodec
- some DVB API cleanups, removing ioctls and compat code for old
out-of-tree drivers that were never merged upstream
- improvements at DVB core to support frontents that support both
Satellite and non-satellite delivery systems
- got rid of the unused VIDIOC_RESERVED V4L2 ioctl
- some cleanups/improvements at gl861 ISDB driver
- several improvements on ov772x, ov7670 and ov5640, imx274, ov5645,
and smiapp sensor drivers
- fixes at em28xx to support dual TS devices
- some cleanups at V4L2/VB2 locking logic
- some API improvements at media controller
- some cec core and drivers improvements
- some uvcvideo improvements
- some improvements at platform drivers: stm32-dcmi, rcar-vin, coda,
reneseas-ceu, imx, vsp1, venus, camss
- lots of other cleanups and fixes
* tag 'media/v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (406 commits)
Revert "media: vivid: shut up warnings due to a non-trivial logic"
siano: get rid of an unused return code for debugfs register
media: isp: fix a warning about a wrong struct initializer
media: radio-wl1273: fix return code for the polling routine
media: s3c-camif: fix return code for the polling routine
media: saa7164: fix return codes for the polling routine
media: exynos-gsc: fix return code if mutex was interrupted
media: mt9v111: Fix build error with no VIDEO_V4L2_SUBDEV_API
media: xc4000: get rid of uneeded casts
media: drxj: get rid of uneeded casts
media: tuner-xc2028: don't use casts for printing sizes
media: cleanup fall-through comments
media: vivid: shut up warnings due to a non-trivial logic
media: rtl28xxu: be sure that it won't go past the array size
media: mt9v111: avoid going past the buffer
media: vsp1_dl: add a description for cmdpool field
media: sta2x11: add a missing parameter description
media: v4l2-mem2mem: add descriptions to MC fields
media: i2c: fix warning in Aptina MT9V111
media: imx: shut up a false positive warning
...
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Pull networking updates from David Miller:
"Highlights:
- Gustavo A. R. Silva keeps working on the implicit switch fallthru
changes.
- Support 802.11ax High-Efficiency wireless in cfg80211 et al, From
Luca Coelho.
- Re-enable ASPM in r8169, from Kai-Heng Feng.
- Add virtual XFRM interfaces, which avoids all of the limitations of
existing IPSEC tunnels. From Steffen Klassert.
- Convert GRO over to use a hash table, so that when we have many
flows active we don't traverse a long list during accumluation.
- Many new self tests for routing, TC, tunnels, etc. Too many
contributors to mention them all, but I'm really happy to keep
seeing this stuff.
- Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu.
- Lots of cleanups and fixes in L2TP code from Guillaume Nault.
- Add IPSEC offload support to netdevsim, from Shannon Nelson.
- Add support for slotting with non-uniform distribution to netem
packet scheduler, from Yousuk Seung.
- Add UDP GSO support to mlx5e, from Boris Pismenny.
- Support offloading of Team LAG in NFP, from John Hurley.
- Allow to configure TX queue selection based upon RX queue, from
Amritha Nambiar.
- Support ethtool ring size configuration in aquantia, from Anton
Mikaev.
- Support DSCP and flowlabel per-transport in SCTP, from Xin Long.
- Support list based batching and stack traversal of SKBs, this is
very exciting work. From Edward Cree.
- Busyloop optimizations in vhost_net, from Toshiaki Makita.
- Introduce the ETF qdisc, which allows time based transmissions. IGB
can offload this in hardware. From Vinicius Costa Gomes.
- Add parameter support to devlink, from Moshe Shemesh.
- Several multiplication and division optimizations for BPF JIT in
nfp driver, from Jiong Wang.
- Lots of prepatory work to make more of the packet scheduler layer
lockless, when possible, from Vlad Buslov.
- Add ACK filter and NAT awareness to sch_cake packet scheduler, from
Toke Høiland-Jørgensen.
- Support regions and region snapshots in devlink, from Alex Vesker.
- Allow to attach XDP programs to both HW and SW at the same time on
a given device, with initial support in nfp. From Jakub Kicinski.
- Add TLS RX offload and support in mlx5, from Ilya Lesokhin.
- Use PHYLIB in r8169 driver, from Heiner Kallweit.
- All sorts of changes to support Spectrum 2 in mlxsw driver, from
Ido Schimmel.
- PTP support in mv88e6xxx DSA driver, from Andrew Lunn.
- Make TCP_USER_TIMEOUT socket option more accurate, from Jon
Maxwell.
- Support for templates in packet scheduler classifier, from Jiri
Pirko.
- IPV6 support in RDS, from Ka-Cheong Poon.
- Native tproxy support in nf_tables, from Máté Eckl.
- Maintain IP fragment queue in an rbtree, but optimize properly for
in-order frags. From Peter Oskolkov.
- Improvde handling of ACKs on hole repairs, from Yuchung Cheng"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits)
bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT"
hv/netvsc: Fix NULL dereference at single queue mode fallback
net: filter: mark expected switch fall-through
xen-netfront: fix warn message as irq device name has '/'
cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0
net: dsa: mv88e6xxx: missing unlock on error path
rds: fix building with IPV6=m
inet/connection_sock: prefer _THIS_IP_ to current_text_addr
net: dsa: mv88e6xxx: bitwise vs logical bug
net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()
ieee802154: hwsim: using right kind of iteration
net: hns3: Add vlan filter setting by ethtool command -K
net: hns3: Set tx ring' tc info when netdev is up
net: hns3: Remove tx ring BD len register in hns3_enet
net: hns3: Fix desc num set to default when setting channel
net: hns3: Fix for phy link issue when using marvell phy driver
net: hns3: Fix for information of phydev lost problem when down/up
net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero
net: hns3: Add support for serdes loopback selftest
bnxt_en: take coredump_record structure off stack
...
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kconfig consolidation from Masahiro Yamada:
"Consolidation of Kconfig files by Christoph Hellwig.
Move the source statements of arch-independent Kconfig files instead
of duplicating the includes in every arch/$(SRCARCH)/Kconfig"
* tag 'kconfig-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: add a Memory Management options" menu
kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt
kconfig: use a menu in arch/Kconfig to reduce clutter
kconfig: include kernel/Kconfig.preempt from init/Kconfig
Kconfig: consolidate the "Kernel hacking" menu
kconfig: include common Kconfig files from top-level Kconfig
kconfig: remove duplicate SWAP symbol defintions
um: create a proper drivers Kconfig
um: cleanup Kconfig files
um: stop abusing KBUILD_KCONFIG
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull pstore update from Kees Cook:
"This cycle has been very quiet for pstore: the only change is adding
awareness of the zstd compression method"
* tag 'pstore-v4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
pstore: add zstd compression support
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"A bunch of good stuff in here. Worth noting is that we've pulled in
the x86/mm branch from -tip so that we can make use of the core
ioremap changes which allow us to put down huge mappings in the
vmalloc area without screwing up the TLB. Much of the positive
diffstat is because of the rseq selftest for arm64.
Summary:
- Wire up support for qspinlock, replacing our trusty ticket lock
code
- Add an IPI to flush_icache_range() to ensure that stale
instructions fetched into the pipeline are discarded along with the
I-cache lines
- Support for the GCC "stackleak" plugin
- Support for restartable sequences, plus an arm64 port for the
selftest
- Kexec/kdump support on systems booting with ACPI
- Rewrite of our syscall entry code in C, which allows us to zero the
GPRs on entry from userspace
- Support for chained PMU counters, allowing 64-bit event counters to
be constructed on current CPUs
- Ensure scheduler topology information is kept up-to-date with CPU
hotplug events
- Re-enable support for huge vmalloc/IO mappings now that the core
code has the correct hooks to use break-before-make sequences
- Miscellaneous, non-critical fixes and cleanups"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (90 commits)
arm64: alternative: Use true and false for boolean values
arm64: kexec: Add comment to explain use of __flush_icache_range()
arm64: sdei: Mark sdei stack helper functions as static
arm64, kaslr: export offset in VMCOREINFO ELF notes
arm64: perf: Add cap_user_time aarch64
efi/libstub: Only disable stackleak plugin for arm64
arm64: drop unused kernel_neon_begin_partial() macro
arm64: kexec: machine_kexec should call __flush_icache_range
arm64: svc: Ensure hardirq tracing is updated before return
arm64: mm: Export __sync_icache_dcache() for xen-privcmd
drivers/perf: arm-ccn: Use devm_ioremap_resource() to map memory
arm64: Add support for STACKLEAK gcc plugin
arm64: Add stack information to on_accessible_stack
drivers/perf: hisi: update the sccl_id/ccl_id when MT is supported
arm64: fix ACPI dependencies
rseq/selftests: Add support for arm64
arm64: acpi: fix alignment fault in accessing ACPI
efi/arm: map UEFI memory map even w/o runtime services enabled
efi/arm: preserve early mapping of UEFI memory map longer for BGRT
drivers: acpi: add dependency of EFI for arm64
...
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Pull configfs updates from Christoph Hellwig:
- simplify the cide by using kvasprintf (Bart Van Assche)
- fix a gcc 8 string truncation warning by making the code simpler
(Guenter Roeck)
- fix a bug in rmdir() handling (Mike Christie)
* tag 'configfs-for-4.19' of git://git.infradead.org/users/hch/configfs:
configfs: fix registered group removal
configfs: replace strncpy with memcpy
configfs: use kvasprintf() instead of open-coding it
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Pull mtd updates from Boris Brezillon:
"JFFS2 changes:
- Support 64-bit timestamps
MTD core changes:
- Support sub-partitions
- Clarify mtd_oob_ops documentation
- Make Kconfig formatting consistent
- Fix potential overflows in mtdchar_{write,read}()
- Fallback to ->_{read,write}() when ->_{read,write}_oob() is missing
and no OOB data were requested
- Remove VLA usage in the bch lib
MTD driver changes:
- Use mtd_device_register() instead of mtd_device_parse_register()
where applicable
- Use proper printk format to print physical addresses in the
solutionengine driver
- Add missing mtd_set_of_node() call in the powernv driver
- Remove unneeded variables in a few drivers
- Plug the TRX part parser to the DT partition parsers logic
- Check ioremap_cache() return code in the gpio-addr-flash driver
- Stop using VMLINUX_SYMBOL_STR() in gen_probe.c
SPI NOR core changes:
- Apply reset hacks only when reset is explicitly marked as broken in
the DT
SPI NOR driver changes:
- Minor cleanup/fixes in the m25p80 driver
- Release flash_np in the nxp-spifi driver
- Add suspend/resume hooks to the atmel-quadspi driver
- Include gpio/consumer.h instead of gpio.h in the atmel-quadspi
driver
- Use %pK instead of %p in the stm32-quadspi driver
- Improve timeout handling in the cadence-quadspi driver
- Use mtd_device_register() instead of mtd_device_parse_register() in
the intel-spi driver
NAND core changes:
- Add the SPI-NAND framework.
- Create a helper to find the best ECC configuration.
- Create NAND controller operations.
- Allocate dynamically ONFI parameters structure.
- Add defines for ONFI version bits.
- Add manufacturer fixup for ONFI parameter page.
- Add an option to specify NAND chip as a boot device.
- Add Reed-Solomon error correction algorithm.
- Better name for the controller structure.
- Remove unused caller_is_module() definition.
- Make subop helpers return unsigned values.
- Expose _notsupp() helpers for raw page accessors.
- Add default values for dynamic timings.
- Kill the chip->scan_bbt() hook.
- Rename nand_default_bbt() into nand_create_bbt().
- Start to clean the nand_chip structure.
- Remove stale prototype from rawnand.h.
Raw NAND controllers drivers changes:
- Qcom: structuring cleanup.
- Denali: use core helper to find the best ECC configuration.
- Possible build of almost all drivers by adding a dependency on
COMPILE_TEST for almost all of them in Kconfig, implies various
fixes, Kconfig cleanup, GPIO headers inclusion cleanup, and even
changes in sparc64 and ia64 architectures.
- Clean the ->probe() functions error path of a lot of drivers.
- Migrate all drivers to use nand_scan() instead of
nand_scan_ident()/nand_scan_tail() pair.
- Use mtd_device_register() where applicable to simplify the code.
- Marvell:
* Handle on-die ECC.
* Better clocks handling.
* Remove bogus comment.
* Add suspend and resume support.
- Tegra: add NAND controller driver.
- Atmel:
* Add module param to avoid using dma.
* Drop Wenyou Yang from MAINTAINERS.
- Denali: optimize timings handling.
- FSMC: Stop using chip->read_buf().
- FSL:
* Switch to SPDX license tag identifiers.
* Fix qualifiers in MXC init functions.
Raw NAND chip drivers changes:
- Micron:
* Add fixup for ONFI revision.
* Update ecc_stats.corrected.
* Make ECC activation stateful.
* Avoid enabling/disabling ECC when it can't be disabled.
* Get the actual number of bitflips.
* Allow forced on-die ECC.
* Support 8/512 on-die ECC.
* Fix on-die ECC detection logic.
- Hynix:
* Fix decoding the OOB size on H27UCG8T2BTR.
* Use ->exec_op() in hynix_nand_reg_write_op()"
* tag 'mtd/for-4.19' of git://git.infradead.org/linux-mtd: (188 commits)
mtd: rawnand: atmel: Select GENERIC_ALLOCATOR
MAINTAINERS: drop Wenyou Yang from Atmel NAND driver support
mtd: rawnand: allocate dynamically ONFI parameters during detection
mtd: spi-nor: only apply reset hacks to broken hardware
mtd: spi-nor: cadence-quadspi: fix timeout handling
mtd: spi-nor: atmel-quadspi: Include gpio/consumer.h instead of gpio.h
mtd: spi-nor: intel-spi: use mtd_device_register()
mtd: spi-nor: stm32-quadspi: replace "%p" with "%pK"
mtd: spi-nor: atmel-quadspi: add suspend/resume hooks
mtd: rawnand: allocate model parameter dynamically
mtd: rawnand: do not export nand_scan_[ident|tail]() anymore
mtd: rawnand: txx9ndfmc: convert driver to nand_scan()
mtd: rawnand: txx9ndfmc: clarify ECC parameters assignation
mtd: rawnand: tegra: convert driver to nand_scan()
mtd: rawnand: jz4740: convert driver to nand_scan()
mtd: rawnand: jz4740: group nand_scan_{ident, tail} calls
mtd: rawnand: jz4740: fix probe function error path
mtd: rawnand: docg4: convert driver to nand_scan()
mtd: rawnand: do not execute nand_scan_ident() if maxchips is zero
mtd: rawnand: atmel: convert driver to nand_scan()
...
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Pull block updates from Jens Axboe:
"First pull request for this merge window, there will also be a
followup request with some stragglers.
This pull request contains:
- Fix for a thundering heard issue in the wbt block code (Anchal
Agarwal)
- A few NVMe pull requests:
* Improved tracepoints (Keith)
* Larger inline data support for RDMA (Steve Wise)
* RDMA setup/teardown fixes (Sagi)
* Effects log suppor for NVMe target (Chaitanya Kulkarni)
* Buffered IO suppor for NVMe target (Chaitanya Kulkarni)
* TP4004 (ANA) support (Christoph)
* Various NVMe fixes
- Block io-latency controller support. Much needed support for
properly containing block devices. (Josef)
- Series improving how we handle sense information on the stack
(Kees)
- Lightnvm fixes and updates/improvements (Mathias/Javier et al)
- Zoned device support for null_blk (Matias)
- AIX partition fixes (Mauricio Faria de Oliveira)
- DIF checksum code made generic (Max Gurtovoy)
- Add support for discard in iostats (Michael Callahan / Tejun)
- Set of updates for BFQ (Paolo)
- Removal of async write support for bsg (Christoph)
- Bio page dirtying and clone fixups (Christoph)
- Set of bcache fix/changes (via Coly)
- Series improving blk-mq queue setup/teardown speed (Ming)
- Series improving merging performance on blk-mq (Ming)
- Lots of other fixes and cleanups from a slew of folks"
* tag 'for-4.19/block-20180812' of git://git.kernel.dk/linux-block: (190 commits)
blkcg: Make blkg_root_lookup() work for queues in bypass mode
bcache: fix error setting writeback_rate through sysfs interface
null_blk: add lock drop/acquire annotation
Blk-throttle: reduce tail io latency when iops limit is enforced
block: paride: pd: mark expected switch fall-throughs
block: Ensure that a request queue is dissociated from the cgroup controller
block: Introduce blk_exit_queue()
blkcg: Introduce blkg_root_lookup()
block: Remove two superfluous #include directives
blk-mq: count the hctx as active before allocating tag
block: bvec_nr_vecs() returns value for wrong slab
bcache: trivial - remove tailing backslash in macro BTREE_FLAG
bcache: make the pr_err statement used for ENOENT only in sysfs_attatch section
bcache: set max writeback rate when I/O request is idle
bcache: add code comments for bset.c
bcache: fix mistaken comments in request.c
bcache: fix mistaken code comments in bcache.h
bcache: add a comment in super.c
bcache: avoid unncessary cache prefetch bch_btree_node_get()
bcache: display rate debug parameters to 0 when writeback is not running
...
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Pointer orangefs_inode is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'orangefs_inode' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
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Use new return type vm_fault_t for fault handler. For now,
this is just documenting that the function returns a VM_FAULT
value rather than an errno. Once all instances are converted,
vm_fault_t will become a distinct type.
See the following
commit 1c8f422059ae ("mm: change return type to vm_fault_t")
Fixed checkpatch.pl warning.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
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Pull xfs updates from Darrick Wong:
"This is the second part of the XFS changes for 4.19.
The biggest changes are the removal of buffer heads frm XFS, a massive
reworking of the deferred transaction operations handling code, the
removal of the long defunct barrier/nobarrier mount options, and the
addition of a few more online repair functions.
Summary:
- Use extent maps to track pagecache page status instead of
bufferhead state.
- Refactor pagecache read and write paths to use the new iomap
library functions, which enable us to drop the old bufferhead code
for pagesize == blocksize filesystems.
- Set up parallel per-block-per-page metadata to track subpage
information that was tracked by buffer heads, which enables us to
drop the old bufferhead code for pagesize > blocksize filesystems.
- Tie a deferred ops control structure to a transaction so that we
can take advantage of an upper-level dfops without having to plumb
pointer passing through the code.
- Refactor the deferred ops code to track deferred ops as part of the
transaction structure (instead of as a separate data structure) so
that we can simplify the scoping rules around defer_ops.
- Refactor twisty delwri buffer submission code to avoid deadlocks.
- Shorten and fix indenting problems in the scrub code.
- Detect obviously bad summary counts at mount and fix them.
- Directly associate deferred ops control structure with a
transaction so that callers no longer have to manage it themselves.
- Remove a couple of IRIX-era inode macros.
- Remove the long-deprecated 'barrier' and 'nobarrier' mount options.
- Clean up the inode fork structure a bit.
- Check for bad fs summary counter values in the superblock.
- Reduce COW fork lookups during writeback.
- Refactor the deferred ops control structures into the transaction
structure, thereby eliminating the need for transaction users to
handle the deferred ops as a separate data structure.
- Add the ability to repair AG headers online.
- Fix a crash due to insufficient return value checking.
- Various fixes and cleanups"
* tag 'xfs-4.19-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (155 commits)
xfs: fix a null pointer dereference in xfs_bmap_extents_to_btree
xfs: remove b_last_holder & associated macros
iomap: Switch to offset_in_page for clarity
xfs: Close race between direct IO and xfs_break_layouts()
xfs: repair the AGI
xfs: repair the AGFL
xfs: repair the AGF
xfs: remove dead error handling code in xfs_dquot_disk_alloc()
xfs: use WRITE_ONCE to update if_seq
xfs: fix a comment in xfs_log_reserve
xfs: only validate summary counts on primary superblock
xfs: substitute spaces with tabs
xfs: fold dfops into the transaction
xfs: always defer agfl block frees
xfs: pass transaction to xfs_defer_add()
xfs: replace xfs_defer_ops ->dop_pending with on-stack list
xfs: cancel dfops on xfs_defer_finish() error
xfs: clean out superfluous dfops dop params/vars
xfs: drop dop param from xfs_defer_op_type ->finish_item() callback
xfs: automatic dfops inode relogging
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
- Convert content from the ext4 wiki to Documentation rst files so it
is more likely to be updated as we add new features to ext4.
- Add 64-bit timestamp support to ext4's superblock fields.
- ... and the usual bug fixes and cleanups, including a Spectre gadget
fixup and some hardening against maliciously corrupted file systems.
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (34 commits)
ext4: remove unneeded variable "err" in ext4_mb_release_inode_pa()
ext4: improve code readability in ext4_iget()
ext4: fix spectre gadget in ext4_mb_regular_allocator()
ext4: check for NUL characters in extended attribute's name
ext4: use ext4_warning() for sb_getblk failure
ext4: fix race when setting the bitmap corrupted flag
ext4: reset error code in ext4_find_entry in fallback
ext4: handle layout changes to pinned DAX mappings
dax: dax_layout_busy_page() warn on !exceptional
docs: fix up the obviously obsolete bits in the new ext4 documentation
docs: add new ext4 superblock time extension fields
docs: create filesystem internal section
ext4: use swap macro in mext_page_double_lock
ext4: check allocation failure when duplicating "data" in ext4_remount()
ext4: fix warning message in ext4_enable_quotas()
ext4: super: extend timestamps to 40 bits
jbd2: replace current_kernel_time64 with ktime equivalent
ext4: use timespec64 for all inode times
ext4: use ktime_get_real_seconds for i_dtime
ext4: use 64-bit timestamps for mmp_time
...
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Pull cifs updates from Steve French:
"smb3/cifs fixes (including 8 for stable).
Other improvements include:
- improved tracing, improved stats
- snapshots (previous version mounts work now over SMB3)
- performance (compounding enabled for statfs, ~40% faster).
- security (make it possible to build cifs.ko with insecure vers=1.0
disabled in Kconfig)"
* tag '4.19-smb3' of git://git.samba.org/sfrench/cifs-2.6: (43 commits)
smb3: create smb3 equivalent alias for cifs pseudo-xattrs
smb3: allow previous versions to be mounted with snapshot= mount parm
cifs: don't show domain= in mount output when domain is empty
cifs: add missing support for ACLs in SMB 3.11
smb3: enumerating snapshots was leaving part of the data off end
cifs: update smb2_queryfs() to use compounding
cifs: update receive_encrypted_standard to handle compounded responses
cifs: create SMB2_open_init()/SMB2_open_free() helpers.
cifs: add SMB2_query_info_[init|free]()
cifs: add SMB2_close_init()/SMB2_close_free()
smb3: display stats counters for number of slow commands
CIFS: fix uninitialized ptr deref in smb2 signing
smb3: Do not send SMB3 SET_INFO if nothing changed
smb3: fix minor debug output for CONFIG_CIFS_STATS
smb3: add tracepoint for slow responses
cifs: add compound_send_recv()
cifs: make smb_send_rqst take an array of requests
cifs: update init_sg, crypt_message to take an array of rqst
smb3: update readme to correct information about /proc/fs/cifs/Stats
smb3: fix reset of bytes read and written stats
...
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Pull fs iomap refactoring from Darrick Wong:
"This is the first part of the XFS changes for 4.19.
Christoph and Andreas coordinated some refactoring work on the iomap
code in preparation for removing buffer heads from XFS and porting
gfs2 to iomap. I'm sending this small pull request ahead of the main
XFS merge to avoid holding up gfs2 unnecessarily"
* 'iomap-4.19-merge' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: add inline data support to iomap_readpage_actor
iomap: support direct I/O to inline data
iomap: refactor iomap_dio_actor
iomap: add initial support for writes without buffer heads
iomap: add an iomap-based readpage and readpages implementation
iomap: add private pointer to struct iomap
iomap: add a page_done callback
iomap: generic inline data handling
iomap: complete partial direct I/O writes synchronously
iomap: mark newly allocated buffer heads as new
fs: factor out a __generic_write_end helper
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"Mostly fixes and cleanups, nothing big, though the notable thing is
the inserted/deleted lines delta -1124.
User visible changes:
- allow defrag on opened read-only files that have rw permissions;
similar to what dedupe will allow on such files
Core changes:
- tree checker improvements, reported by fuzzing:
* more checks for: block group items, essential trees
* chunk type validation
* mount time cross-checks that physical and logical chunks match
* switch more error codes to EUCLEAN aka EFSCORRUPTED
Fixes:
- fsync corner case fixes
- fix send failure when root has deleted files still open
- send, fix incorrect file layout after hole punching beyond eof
- fix races between mount and deice scan ioctl, found by fuzzing
- fix deadlock when delayed iput is called from writeback on the same
inode; rare but has been observed in practice, also removes code
- fix pinned byte accounting, using the right percpu helpers; this
should avoid some write IO inefficiency during low space conditions
- don't remove block group that still has pinned bytes
- reset on-disk device stats value after replace, otherwise this
would report stale values for the new device
Cleanups:
- time64_t/timespec64 cleanups
- remove remaining dead code in scrub handling NOCOW extents after
disabling it in previous cycle
- simplify fsync regarding ordered extents logic and remove all the
related code
- remove redundant arguments in order to reduce stack space
consumption
- remove support for V0 type of extents, not in use since 2.6.30
- remove several unused structure members
- fewer indirect function calls by inlining some callbacks
- qgroup rescan timing fixes
- vfs: iget cleanups"
* tag 'for-4.19-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (182 commits)
btrfs: revert fs_devices state on error of btrfs_init_new_device
btrfs: Exit gracefully when chunk map cannot be inserted to the tree
btrfs: Introduce mount time chunk <-> dev extent mapping check
btrfs: Verify that every chunk has corresponding block group at mount time
btrfs: Check that each block group has corresponding chunk at mount time
Btrfs: send, fix incorrect file layout after hole punching beyond eof
btrfs: Use wrapper macro for rcu string to remove duplicate code
btrfs: simplify btrfs_iget
btrfs: lift make_bad_inode into btrfs_iget
btrfs: simplify IS_ERR/PTR_ERR checks
btrfs: btrfs_iget never returns an is_bad_inode inode
btrfs: replace: Reset on-disk dev stats value after replace
btrfs: extent-tree: Remove unused __btrfs_free_block_rsv
btrfs: backref: Use ERR_CAST to return error code
btrfs: Remove redundant btrfs_release_path from btrfs_unlink_subvol
btrfs: Remove root parameter from btrfs_unlink_subvol
btrfs: Remove fs_info from btrfs_add_root_ref
btrfs: Remove fs_info from btrfs_del_root_ref
btrfs: Remove fs_info from btrfs_del_root
btrfs: Remove fs_info from btrfs_delete_delayed_dir_index
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull file locking updates from Jeff Layton:
"Just a couple of patches from Konstantin to fix /proc/locks when the
process that set the lock has exited, and a new tracepoint for the
flock() codepath. Also threw in mailmap entries for my addresses and a
comment cleanup"
* tag 'locks-v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
locks: remove misleading obsolete comment
mailmap: remap some of my email addresses to kernel.org address
locks: add tracepoint in flock codepath
fs/lock: show locks taken by processes from another pidns
fs/lock: skip lock owner pid translation in case we are in init_pid_ns
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc vfs updates from Al Viro:
"Misc cleanups from various folks all over the place
I expected more fs/dcache.c cleanups this cycle, so that went into a
separate branch. Said cleanups have missed the window, so in the
hindsight it could've gone into work.misc instead. Decided not to
cherry-pick, thus the 'work.dcache' branch"
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs: dcache: Use true and false for boolean values
fold generic_readlink() into its only caller
fs: shave 8 bytes off of struct inode
fs: Add more kernel-doc to the produced documentation
fs: Fix attr.c kernel-doc
removed extra extern file_fdatawait_range
* 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
kill dentry_update_name_case()
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs aio updates from Al Viro:
"Christoph's aio poll, saner this time around.
This time it's pretty much local to fs/aio.c. Hopefully race-free..."
* 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
aio: allow direct aio poll comletions for keyed wakeups
aio: implement IOCB_CMD_POLL
aio: add a iocb refcount
timerfd: add support for keyed wakeups
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs lookup() updates from Al Viro:
"More conversions of ->lookup() to d_splice_alias().
Should be reasonably complete now - the only leftovers are in ceph"
* 'work.lookup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
afs_try_auto_mntpt(): return NULL instead of ERR_PTR(-ENOENT)
afs_lookup(): switch to d_splice_alias()
afs: switch dynroot lookups to d_splice_alias()
hpfs: fix an inode leak in lookup, switch to d_splice_alias()
hostfs_lookup: switch to d_splice_alias()
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs icache updates from Al Viro:
- NFS mkdir/open_by_handle race fix
- analogous solution for FUSE, replacing the one currently in mainline
- new primitive to be used when discarding halfway set up inodes on
failed object creation; gives sane warranties re icache lookups not
returning such doomed by still not freed inodes. A bunch of
filesystems switched to that animal.
- Miklos' fix for last cycle regression in iget5_locked(); -stable will
need a slightly different variant, unfortunately.
- misc bits and pieces around things icache-related (in adfs and jfs).
* 'work.mkdir' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
jfs: don't bother with make_bad_inode() in ialloc()
adfs: don't put inodes into icache
new helper: inode_fake_hash()
vfs: don't evict uninitialized inode
jfs: switch to discard_new_inode()
ext2: make sure that partially set up inodes won't be returned by ext2_iget()
udf: switch to discard_new_inode()
ufs: switch to discard_new_inode()
btrfs: switch to discard_new_inode()
new primitive: discard_new_inode()
kill d_instantiate_no_diralias()
nfs_instantiate(): prevent multiple aliases for directory inode
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs open-related updates from Al Viro:
- "do we need fput() or put_filp()" rules are gone - it's always fput()
now. We keep track of that state where it belongs - in ->f_mode.
- int *opened mess killed - in finish_open(), in ->atomic_open()
instances and in fs/namei.c code around do_last()/lookup_open()/atomic_open().
- alloc_file() wrappers with saner calling conventions are introduced
(alloc_file_clone() and alloc_file_pseudo()); callers converted, with
much simplification.
- while we are at it, saner calling conventions for path_init() and
link_path_walk(), simplifying things inside fs/namei.c (both on
open-related paths and elsewhere).
* 'work.open3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (40 commits)
few more cleanups of link_path_walk() callers
allow link_path_walk() to take ERR_PTR()
make path_init() unconditionally paired with terminate_walk()
document alloc_file() changes
make alloc_file() static
do_shmat(): grab shp->shm_file earlier, switch to alloc_file_clone()
new helper: alloc_file_clone()
create_pipe_files(): switch the first allocation to alloc_file_pseudo()
anon_inode_getfile(): switch to alloc_file_pseudo()
hugetlb_file_setup(): switch to alloc_file_pseudo()
ocxlflash_getfile(): switch to alloc_file_pseudo()
cxl_getfile(): switch to alloc_file_pseudo()
... and switch shmem_file_setup() to alloc_file_pseudo()
__shmem_file_setup(): reorder allocations
new wrapper: alloc_file_pseudo()
kill FILE_{CREATED,OPENED}
switch atomic_open() and lookup_open() to returning 0 in all success cases
document ->atomic_open() changes
->atomic_open(): return 0 in all success cases
get rid of 'opened' in path_openat() and the helpers downstream
...
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Paul Burton:
"Here are the main MIPS changes for 4.19.
An overview of the general architecture changes:
- Massive DMA ops refactoring from Christoph Hellwig (huzzah for
deleting crufty code!).
- We introduce NT_MIPS_DSP & NT_MIPS_FP_MODE ELF notes &
corresponding regsets to expose DSP ASE & floating point mode state
respectively, both for live debugging & core dumps.
- We better optimize our code by hard-coding cpu_has_* macros at
compile time where their values are known due to the ISA revision
that the kernel build is targeting.
- The EJTAG exception handler now better handles SMP systems, where
it was previously possible for CPUs to clobber a register value
saved by another CPU.
- Our implementation of memset() gained a couple of fixes for MIPSr6
systems to return correct values in some cases where stores fault.
- We now implement ioremap_wc() using the uncached-accelerated cache
coherency attribute where supported, which is detected during boot,
and fall back to plain uncached access where necessary. The
MIPS-specific (and unused in tree) ioremap_uncached_accelerated() &
ioremap_cacheable_cow() are removed.
- The prctl(PR_SET_FP_MODE, ...) syscall is better supported for SMP
systems by reworking the way we ensure remote CPUs that may be
running threads within the affected process switch mode.
- Systems using the MIPS Coherence Manager will now set the
MIPS_IC_SNOOPS_REMOTE flag to avoid some unnecessary cache
maintenance overhead when flushing the icache.
- A few fixes were made for building with clang/LLVM, which now
sucessfully builds kernels for many of our platforms.
- Miscellaneous cleanups all over.
And some platform-specific changes:
- ar7 gained stubs for a few clock API functions to fix build
failures for some drivers.
- ath79 gained support for a few new SoCs, a few fixes & better
gpio-keys support.
- Ci20 now exposes its SPI bus using the spi-gpio driver.
- The generic platform can now auto-detect a suitable value for
PHYS_OFFSET based upon the memory map described by the device tree,
allowing us to avoid wasting memory on page book-keeping for
systems where RAM starts at a non-zero physical address.
- Ingenic systems using the jz4740 platform code now link their
vmlinuz higher to allow for kernels of a realistic size.
- Loongson32 now builds the kernel targeting MIPSr1 rather than
MIPSr2 to avoid CPU errata.
- Loongson64 gains a couple of fixes, a workaround for a write
buffering issue & support for the Loongson 3A R3.1 CPU.
- Malta now uses the piix4-poweroff driver to handle powering down.
- Microsemi Ocelot gained support for its SPI bus & NOR flash, its
second MDIO bus and can now be supported by a FIT/.itb image.
- Octeon saw a bunch of header cleanups which remove a lot of
duplicate or unused code"
* tag 'mips_4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (123 commits)
MIPS: Remove remnants of UASM_ISA
MIPS: netlogic: xlr: Remove erroneous check in nlm_fmn_send()
MIPS: VDSO: Force link endianness
MIPS: Always specify -EB or -EL when using clang
MIPS: Use dins to simplify __write_64bit_c0_split()
MIPS: Use read-write output operand in __write_64bit_c0_split()
MIPS: Avoid using array as parameter to write_c0_kpgd()
MIPS: vdso: Allow clang's --target flag in VDSO cflags
MIPS: genvdso: Remove GOT checks
MIPS: Remove obsolete MIPS checks for DST node "chosen@0"
MIPS: generic: Remove input symbols from defconfig
MIPS: Delete unused code in linux32.c
MIPS: Remove unused sys_32_mmap2
MIPS: Remove nabi_no_regargs
mips: dts: mscc: enable spi and NOR flash support on ocelot PCB123
mips: dts: mscc: Add spi on Ocelot
MIPS: Loongson: Merge load addresses
MIPS: Loongson: Set Loongson32 to MIPS32R1
MIPS: mscc: ocelot: add interrupt controller properties to GPIO controller
MIPS: generic: Select MIPS_AUTO_PFN_OFFSET
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"The timers departement more or less proudly presents:
- More Y2038 timekeeping work mostly in the core code. The work is
slowly, but steadily targeting the actuall syscalls.
- Enhanced timekeeping suspend/resume support by utilizing
clocksources which do not stop during suspend, but are otherwise
not the main timekeeping clocksources.
- Make NTP adjustmets more accurate and immediate when the frequency
is set directly and not incrementally.
- Sanitize the overrung handing of posix timers
- A new timer driver for Mediatek SoCs
- The usual pile of fixes and updates all over the place"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
clockevents: Warn if cpu_all_mask is used as cpumask
tick/broadcast-hrtimer: Use cpu_possible_mask for ce_broadcast_hrtimer
clocksource/drivers/arm_arch_timer: Fix bogus cpu_all_mask usage
clocksource: ti-32k: Remove CLOCK_SOURCE_SUSPEND_NONSTOP flag
timers: Clear timer_base::must_forward_clk with timer_base::lock held
clocksource/drivers/sprd: Register one always-on timer to compensate suspend time
clocksource/drivers/timer-mediatek: Add support for system timer
clocksource/drivers/timer-mediatek: Convert the driver to timer-of
clocksource/drivers/timer-mediatek: Use specific prefix for GPT
clocksource/drivers/timer-mediatek: Rename mtk_timer to timer-mediatek
clocksource/drivers/timer-mediatek: Add system timer bindings
clocksource/drivers: Set clockevent device cpumask to cpu_possible_mask
time: Introduce one suspend clocksource to compensate the suspend time
time: Fix extra sleeptime injection when suspend fails
timekeeping/ntp: Constify some function arguments
ntp: Use kstrtos64 for s64 variable
ntp: Remove redundant arguments
timer: Fix coding style
ktime: Provide typesafe ktime_to_ns()
hrtimer: Improve kernel message printing
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking/atomics update from Thomas Gleixner:
"The locking, atomics and memory model brains delivered:
- A larger update to the atomics code which reworks the ordering
barriers, consolidates the atomic primitives, provides the new
atomic64_fetch_add_unless() primitive and cleans up the include
hell.
- Simplify cmpxchg() instrumentation and add instrumentation for
xchg() and cmpxchg_double().
- Updates to the memory model and documentation"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (48 commits)
locking/atomics: Rework ordering barriers
locking/atomics: Instrument cmpxchg_double*()
locking/atomics: Instrument xchg()
locking/atomics: Simplify cmpxchg() instrumentation
locking/atomics/x86: Reduce arch_cmpxchg64*() instrumentation
tools/memory-model: Rename litmus tests to comply to norm7
tools/memory-model/Documentation: Fix typo, smb->smp
sched/Documentation: Update wake_up() & co. memory-barrier guarantees
locking/spinlock, sched/core: Clarify requirements for smp_mb__after_spinlock()
sched/core: Use smp_mb() in wake_woken_function()
tools/memory-model: Add informal LKMM documentation to MAINTAINERS
locking/atomics/Documentation: Describe atomic_set() as a write operation
tools/memory-model: Make scripts executable
tools/memory-model: Remove ACCESS_ONCE() from model
tools/memory-model: Remove ACCESS_ONCE() from recipes
locking/memory-barriers.txt/kokr: Update Korean translation to fix broken DMA vs. MMIO ordering example
MAINTAINERS: Add Daniel Lustig as an LKMM reviewer
tools/memory-model: Fix ISA2+pooncelock+pooncelock+pombonce name
tools/memory-model: Add litmus test for full multicopy atomicity
locking/refcount: Always allow checked forms
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Thomas Gleixner:
"The EFI pile:
- Make mixed mode UEFI runtime service invocations mutually
exclusive, as mandated by the UEFI spec
- Perform UEFI runtime services calls from a work queue so the calls
into the firmware occur from a kernel thread
- Honor the UEFI memory map attributes for live memory regions
configured by UEFI as a framebuffer. This works around a coherency
problem with KVM guests running on ARM.
- Cleanups, improvements and fixes all over the place"
* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efivars: Call guid_parse() against guid_t type of variable
efi/cper: Use consistent types for UUIDs
efi/x86: Replace references to efi_early->is64 with efi_is_64bit()
efi: Deduplicate efi_open_volume()
efi/x86: Add missing NULL initialization in UGA draw protocol discovery
efi/x86: Merge 32-bit and 64-bit UGA draw protocol setup routines
efi/x86: Align efi_uga_draw_protocol typedef names to convention
efi/x86: Merge the setup_efi_pci32() and setup_efi_pci64() routines
efi/x86: Prevent reentrant firmware calls in mixed mode
efi/esrt: Only call efi_mem_reserve() for boot services memory
fbdev/efifb: Honour UEFI memory map attributes when mapping the FB
efi: Drop type and attribute checks in efi_mem_desc_lookup()
efi/libstub/arm: Add opt-in Kconfig option for the DTB loader
efi: Remove the declaration of efi_late_init() as the function is unused
efi/cper: Avoid using get_seconds()
efi: Use a work queue to invoke EFI Runtime Services
efi/x86: Use non-blocking SetVariable() for efi_delete_dummy_variable()
efi/x86: Clean up the eboot code
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Pull vfs fixes from Al Viro:
"A bunch of race fixes, mostly around lazy pathwalk.
All of it is -stable fodder, a large part going back to 2013"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
make sure that __dentry_kill() always invalidates d_seq, unhashed or not
fix __legitimize_mnt()/mntput() race
fix mntput/mntput race
root dentries need RCU-delayed freeing
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Fuzzing tool reports a write to null pointer error in the
xfs_bmap_extents_to_btree, fix it by bailing out on encountering
a null pointer.
Signed-off-by: Shan Hai <shan.hai@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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The old lock tracking infrastructure in xfs using the b_last_holder
field seems to only be useful if you can get into the system with a
debugger; it seems that the existing tracepoints would be the way to
go these days, and this old infrastructure can be removed.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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Instead of open-coding pos & (PAGE_SIZE - 1) and pos & ~PAGE_MASK, use
the offset_in_page macro.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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This patch is the duplicate of ross's fix for ext4 for xfs.
If the refcount of a page is lowered between the time that it is returned
by dax_busy_page() and when the refcount is again checked in
xfs_break_layouts() => ___wait_var_event(), the waiting function
xfs_wait_dax_page() will never be called. This means that
xfs_break_layouts() will still have 'retry' set to false, so we'll stop
looping and never check the refcount of other pages in this inode.
Instead, always continue looping as long as dax_layout_busy_page() gives us
a page which it found with an elevated refcount.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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Pull NAND updates from Miquel Raynal:
"
NAND core changes:
- Add the SPI-NAND framework.
- Create a helper to find the best ECC configuration.
- Create NAND controller operations.
- Allocate dynamically ONFI parameters structure.
- Add defines for ONFI version bits.
- Add manufacturer fixup for ONFI parameter page.
- Add an option to specify NAND chip as a boot device.
- Add Reed-Solomon error correction algorithm.
- Better name for the controller structure.
- Remove unused caller_is_module() definition.
- Make subop helpers return unsigned values.
- Expose _notsupp() helpers for raw page accessors.
- Add default values for dynamic timings.
- Kill the chip->scan_bbt() hook.
- Rename nand_default_bbt() into nand_create_bbt().
- Start to clean the nand_chip structure.
- Remove stale prototype from rawnand.h.
Raw NAND controllers drivers changes:
- Qcom: structuring cleanup.
- Denali: use core helper to find the best ECC configuration.
- Possible build of almost all drivers by adding a dependency on
COMPILE_TEST for almost all of them in Kconfig, implies various
fixes, Kconfig cleanup, GPIO headers inclusion cleanup, and even
changes in sparc64 and ia64 architectures.
- Clean the ->probe() functions error path of a lot of drivers.
- Migrate all drivers to use nand_scan() instead of
nand_scan_ident()/nand_scan_tail() pair.
- Use mtd_device_register() where applicable to simplify the code.
- Marvell:
* Handle on-die ECC.
* Better clocks handling.
* Remove bogus comment.
* Add suspend and resume support.
- Tegra: add NAND controller driver.
- Atmel:
* Add module param to avoid using dma.
* Drop Wenyou Yang from MAINTAINERS.
- Denali: optimize timings handling.
- FSMC: Stop using chip->read_buf().
- FSL:
* Switch to SPDX license tag identifiers.
* Fix qualifiers in MXC init functions.
Raw NAND chip drivers changes:
- Micron:
* Add fixup for ONFI revision.
* Update ecc_stats.corrected.
* Make ECC activation stateful.
* Avoid enabling/disabling ECC when it can't be disabled.
* Get the actual number of bitflips.
* Allow forced on-die ECC.
* Support 8/512 on-die ECC.
* Fix on-die ECC detection logic.
- Hynix:
* Fix decoding the OOB size on H27UCG8T2BTR.
* Use ->exec_op() in hynix_nand_reg_write_op().
"
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We really, really don't want to be encouraging people to use
cifs (the dialect) since it is insecure, so to avoid confusion
we want to move them to names which include 'smb3' instead of
'cifs' - so this simply creates an alias for the pseudo-xattrs
e.g. can now do:
getfattr -n user.smb3.creationtime /mnt1/file
and
getfattr -n user.smb3.dosattrib /mnt1/file
and
getfattr -n system.smb3_acl /mnt1/file
instead of forcing you to use the string 'cifs' in
these (e.g. getfattr -n system.cifs_acl /mnt1/file)
Signed-off-by: Steve French <stfrench@microsoft.com>
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Rebuild the AGI header items with some help from the rmapbt.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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Repair the AGFL from the rmap data.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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Regenerate the AGF from the rmap data.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
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mounting with the "snapshots=" mount parm allows a read-only
view of a previous version of a file system (see MS-SMB2
and "timewarp" tokens, section 2.2.13.2.6) based on the timestamp
passed in on the snapshots mount parm.
Add processing to optionally send this create context.
Example output:
/mnt1 is mounted with "snapshots=..." and will see an earlier
version of the directory, with three fewer files than /mnt2
the current version of the directory.
root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# cat /proc/mounts | grep cifs
//172.22.149.186/public /mnt1 cifs
ro,relatime,vers=default,cache=strict,username=smfrench,uid=0,noforceuid,gid=0,noforcegid,addr=172.22.149.186,file_mode=0755,dir_mode=0755,soft,nounix,mapposix,rsize=1048576,wsize=1048576,echo_interval=60,snapshot=131748608570000000,actimeo=1
//172.22.149.186/public /mnt2 cifs
rw,relatime,vers=default,cache=strict,username=smfrench,uid=0,noforceuid,gid=0,noforcegid,addr=172.22.149.186,file_mode=0755,dir_mode=0755,soft,nounix,mapposix,rsize=1048576,wsize=1048576,echo_interval=60,actimeo=1
root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# ls /mnt1
EmptyDir newerdir
root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# ls /mnt1/newerdir
root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# ls /mnt2
EmptyDir file newerdir newestdir timestamp-trace.cap
root@Ubuntu-17-Virtual-Machine:~/cifs-2.6# ls /mnt2/newerdir
new-file-not-in-snapshot
Snapshots are extremely useful for comparing previous versions of files or directories,
and recovering from data corruptions or mistakes.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
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Reported-by: Xiaoli Feng <xifeng@redhat.com>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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We were missing the methods for get_acl and friends for the 3.11
dialect.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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When enumerating snapshots, the last few bytes of the final
snapshot could be left off since we were miscalculating the
length returned (leaving off the sizeof struct SRV_SNAPSHOT_ARRAY)
See MS-SMB2 section 2.2.32.2. In addition fixup the length used
to allow smaller buffer to be passed in, in order to allow
returning the size of the whole snapshot array more easily.
Sample userspace output with a kernel patched with this
(mounted to a Windows volume with two snapshots).
Before this patch, the second snapshot would be missing a
few bytes at the end.
~/cifs-2.6# ~/enum-snapshots /mnt/file
press enter to issue the ioctl to retrieve snapshot information ...
size of snapshot array = 102
Num snapshots: 2 Num returned: 2 Array Size: 102
Snapshot 0:@GMT-2018.06.30-19.34.17
Snapshot 1:@GMT-2018.06.30-19.33.37
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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Change smb2_queryfs() to use a Create/QueryInfo/Close compound request.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Paulo Alcantara <palcantara@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Paulo Alcantara <palcantara@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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RCU pathwalk relies upon the assumption that anything that changes
->d_inode of a dentry will invalidate its ->d_seq. That's almost
true - the one exception is that the final dput() of already unhashed
dentry does *not* touch ->d_seq at all. Unhashing does, though,
so for anything we'd found by RCU dcache lookup we are fine.
Unfortunately, we can *start* with an unhashed dentry or jump into
it.
We could try and be careful in the (few) places where that could
happen. Or we could just make the final dput() invalidate the damn
thing, unhashed or not. The latter is much simpler and easier to
backport, so let's do it that way.
Reported-by: "Dae R. Jeong" <threeearcat@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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__legitimize_mnt() has two problems - one is that in case of success
the check of mount_lock is not ordered wrt preceding increment of
refcount, making it possible to have successful __legitimize_mnt()
on one CPU just before the otherwise final mntpu() on another,
with __legitimize_mnt() not seeing mntput() taking the lock and
mntput() not seeing the increment done by __legitimize_mnt().
Solved by a pair of barriers.
Another is that failure of __legitimize_mnt() on the second
read_seqretry() leaves us with reference that'll need to be
dropped by caller; however, if that races with final mntput()
we can end up with caller dropping rcu_read_lock() and doing
mntput() to release that reference - with the first mntput()
having freed the damn thing just as rcu_read_lock() had been
dropped. Solution: in "do mntput() yourself" failure case
grab mount_lock, check if MNT_DOOMED has been set by racing
final mntput() that has missed our increment and if it has -
undo the increment and treat that as "failure, caller doesn't
need to drop anything" case.
It's not easy to hit - the final mntput() has to come right
after the first read_seqretry() in __legitimize_mnt() *and*
manage to miss the increment done by __legitimize_mnt() before
the second read_seqretry() in there. The things that are almost
impossible to hit on bare hardware are not impossible on SMP
KVM, though...
Reported-by: Oleg Nesterov <oleg@redhat.com>
Fixes: 48a066e72d97 ("RCU'd vsfmounts")
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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mntput_no_expire() does the calculation of total refcount under mount_lock;
unfortunately, the decrement (as well as all increments) are done outside
of it, leading to false positives in the "are we dropping the last reference"
test. Consider the following situation:
* mnt is a lazy-umounted mount, kept alive by two opened files. One
of those files gets closed. Total refcount of mnt is 2. On CPU 42
mntput(mnt) (called from __fput()) drops one reference, decrementing component
* After it has looked at component #0, the process on CPU 0 does
mntget(), incrementing component #0, gets preempted and gets to run again -
on CPU 69. There it does mntput(), which drops the reference (component #69)
and proceeds to spin on mount_lock.
* On CPU 42 our first mntput() finishes counting. It observes the
decrement of component #69, but not the increment of component #0. As the
result, the total it gets is not 1 as it should've been - it's 0. At which
point we decide that vfsmount needs to be killed and proceed to free it and
shut the filesystem down. However, there's still another opened file
on that filesystem, with reference to (now freed) vfsmount, etc. and we are
screwed.
It's not a wide race, but it can be reproduced with artificial slowdown of
the mnt_get_count() loop, and it should be easier to hit on SMP KVM setups.
Fix consists of moving the refcount decrement under mount_lock; the tricky
part is that we want (and can) keep the fast case (i.e. mount that still
has non-NULL ->mnt_ns) entirely out of mount_lock. All places that zero
mnt->mnt_ns are dropping some reference to mnt and they call synchronize_rcu()
before that mntput(). IOW, if mntput() observes (under rcu_read_lock())
a non-NULL ->mnt_ns, it is guaranteed that there is another reference yet to
be dropped.
Reported-by: Jann Horn <jannh@google.com>
Tested-by: Jann Horn <jannh@google.com>
Fixes: 48a066e72d97 ("RCU'd vsfmounts")
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Paulo Alcantara <palcantara@suse.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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