Use RCU-based freeing for afs_cb_interest struct objects and use RCU on
vnode->cb_interest. Use that change to allow afs_check_validity() to use
read_seqbegin_or_lock() instead of read_seqlock_excl().
This also requires the caller of afs_check_validity() to hold the RCU read
lock across the call.
Signed-off-by: David Howells <dhowells@redhat.com>
Split afs_validate() so that the part that decides if the vnode is still
valid can be used under LOOKUP_RCU conditions from afs_d_revalidate().
Signed-off-by: David Howells <dhowells@redhat.com>
Don't save callback version and type fields as the version is about the
format of the callback information and the type is relative to the
particular RPC call.
Signed-off-by: David Howells <dhowells@redhat.com>
Convert the vendor prefix registry to a schema. This will enable checking
that new vendor prefixes are added (in addition to the less than perfect
checkpatch.pl check) and will also check against adding other prefixes
which are not vendors.
Converted vendor-prefixes.txt using the following sed script:
sed -e 's/\([a-zA-Z0-9\-]*\)[[:space:]]*\([a-zA-Z0-9].*\)/ "^\1,\.\*\":\n description: \2/'
Signed-off-by: Rob Herring <robh@kernel.org>
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Merge tag 'media/v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
"Some fixes for some platform drivers (rockchip, atmel, omap, daVinci,
tegra-cec, coda and rcar).
Also includes a fix on one of the V4L2 uAPI doc, explaining a border
case"
* tag 'media/v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
media: rockchip/vpu: Fix/re-order probe-error/remove path
media: rockchip/vpu: Initialize mdev->bus_info
media: rockchip/vpu: Get vdev from the file arg in vidioc_querycap()
media: rockchip/vpu: Add missing dont_use_autosuspend() calls
media: rockchip/vpu: Do not request id 0 for our video device
media: tegra-cec: fix cec_notifier_parse_hdmi_phandle return check
media: davinci/vpbe: array underflow in vpbe_enum_outputs()
media: field-order.rst: clarify FIELD_ANY and FIELD_NONE
media: staging/imx: add media device to capture register
media: rcar-csi2: Propagate the FLD signal for NTSC and PAL
media: rcar-csi2: restart CSI-2 link if error is detected
media: omap_vout: potential buffer overflow in vidioc_dqbuf()
media: coda: fix unset field and fail on invalid field in buf_prepare
media: atmel: atmel-isc: fix asd memory allocation
media: atmel: atmel-isc: fix INIT_WORK misplacement
media: atmel: atmel-isc: limit incoming pixels per frame
* Correct edac_mc_find()'s return value on error (Robert Richter)
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Merge tag 'edac_fixes_for_5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Pull EDAC fixes from Borislav Petkov:
- Do not build mpc85_edac as a module (Michael Ellerman)
- Correct edac_mc_find()'s return value on error (Robert Richter)
* tag 'edac_fixes_for_5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
EDAC/mc: Fix edac_mc_find() in case no device is found
EDAC/mpc85xx: Prevent building as a module
- a fix for an error path use after free (YueHaibing)
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Merge tag 'configfs-for-5.2' of git://git.infradead.org/users/hch/configfs
Pull configfs update from Christoph Hellwig:
- a fix for an error path use after free (YueHaibing)
* tag 'configfs-for-5.2' of git://git.infradead.org/users/hch/configfs:
configfs: fix possible use-after-free in configfs_register_group
Christoph Hellwig writes:
This is a series doing two somewhat interwinded things. It improves
the asm-generic nommu uaccess helper to optionally be entirely generic
and not require any arch helpers for the actual uaccess. For the
generic uaccess.h to actually be generically useful I also had to kill
off the mess we made of <asm/segment.h>, which really shouldn't exist
on most architectures.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull nommu generic uaccess updates from Arnd Bergmann:
"asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers
Christoph Hellwig writes:
This is a series doing two somewhat interwinded things. It improves
the asm-generic nommu uaccess helper to optionally be entirely
generic and not require any arch helpers for the actual uaccess.
For the generic uaccess.h to actually be generically useful I also
had to kill off the mess we made of <asm/segment.h>, which really
shouldn't exist on most architectures"
* tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
asm-generic: optimize generic uaccess for 8-byte loads and stores
asm-generic: provide entirely generic nommu uaccess
arch: mostly remove <asm/segment.h>
asm-generic: don't include <asm/segment.h> from <asm/uaccess.h>
Pull x86 fixes from Ingo Molnar:
"Misc fixes and updates:
- a handful of MDS documentation/comment updates
- a cleanup related to hweight interfaces
- a SEV guest fix for large pages
- a kprobes LTO fix
- and a final cleanup commit for vDSO HPET support removal"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/speculation/mds: Improve CPU buffer clear documentation
x86/speculation/mds: Revert CPU buffer clear on double fault exit
x86/kconfig: Disable CONFIG_GENERIC_HWEIGHT and remove __HAVE_ARCH_SW_HWEIGHT
x86/mm: Do not use set_{pud, pmd}_safe() when splitting a large page
x86/kprobes: Make trampoline_handler() global and visible
x86/vdso: Remove hpet_page from vDSO
Pull time fixes from Ingo Molnar:
"A TIA adjtimex interface extension, and a POSIX compliance ABI fix for
timespec64 users"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
ntp: Allow TAI-UTC offset to be set to zero
y2038: Make CONFIG_64BIT_TIME unconditional
- ov2640 driver as module
- selecting HAVE_FB_ATMEL for SAMA5 SoCs is useless
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Merge tag 'at91-5.2-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/late
AT91 defconfig for 5.2
- ov2640 driver as module
- selecting HAVE_FB_ATMEL for SAMA5 SoCs is useless
* tag 'at91-5.2-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
ARM: at91: sama5: make ov2640 as a module
ARM: at91: remove HAVE_FB_ATMEL for sama5 SoC as they use DRM
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull perf fixes from Ingo Molnar:
"An x86 PMU constraint fix, an interface fix, and a Sparse fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Allow PEBS multi-entry in watermark mode
perf/x86/intel: Fix INTEL_FLAGS_EVENT_CONSTRAINT* masking
perf/x86/amd/iommu: Make the 'amd_iommu_attr_groups' symbol static
This contains one patch to disable the recently added XUSB support on
Jetson TX2 which is reported to cause boot and CPU hotplug failures in
some cases and doesn't allow the core power rail to be switched off.
Furthermore there are some changes to enable IOMMU support on more
devices. This is needed in order to prevent these devices from breaking
with the policy change in the ARM SMMU driver to break insecure devices
that is currently headed for v5.2.
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Merge tag 'tegra-for-5.2-arm64-dt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/late
arm64: tegra: Device tree fixes for v5.2-rc1
This contains one patch to disable the recently added XUSB support on
Jetson TX2 which is reported to cause boot and CPU hotplug failures in
some cases and doesn't allow the core power rail to be switched off.
Furthermore there are some changes to enable IOMMU support on more
devices. This is needed in order to prevent these devices from breaking
with the policy change in the ARM SMMU driver to break insecure devices
that is currently headed for v5.2.
* tag 'tegra-for-5.2-arm64-dt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: tegra: Disable XUSB support on Jetson TX2
arm64: tegra: Enable SMMU translation for PCI on Tegra186
arm64: tegra: Fix insecure SMMU users for Tegra186
Signed-off-by: Olof Johansson <olof@lixom.net>
This enables the ARM_GIC_PM driver by default for Tegra in order to
increase build coverage.
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Merge tag 'tegra-for-5.2-arm64-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/late
arm64: tegra: Core fixes for v5.2-rc1
This enables the ARM_GIC_PM driver by default for Tegra in order to
increase build coverage.
* tag 'tegra-for-5.2-arm64-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
arm64: tegra: Select ARM_GIC_PM
Signed-off-by: Olof Johansson <olof@lixom.net>
This contains a single fix for a potential PM-related build issue.
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Merge tag 'tegra-for-5.2-bus-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/late
bus/tegra: Fixes for v5.2-rc1
This contains a single fix for a potential PM-related build issue.
* tag 'tegra-for-5.2-bus-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
amba: tegra-ahb: Mark PM functions as __maybe_unused
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull locking fix from Ingo Molnar:
"A single rwsem fix"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Prevent decrement of reader count before increment
A few months ago, I submitted a trivial arm64 defconfig update.
get_maintainer.pl now outputs my address for every defconfig tweak.
Add me to .get_maintainer.ignore to opt out of these notifications.
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Olof Johansson <olof@lixom.net>
arm32 socfpga_defconfig updates for v5.2
- Enable LTC2497 driver
- Enable support for large block devices
* tag 'socfpga_arm32_defconfig_for_v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
ARM: socfpga_defconfig: enable LTC2497
ARM: socfpga_defconfig: enable support for large block devices
Signed-off-by: Olof Johansson <olof@lixom.net>
NXP/FSL soc driver fixes for v5.1
QE drivers
- Fix an error path in qe_pin_request()
* tag 'soc-fsl-fix-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
soc/fsl/qe: Fix an error code in qe_pin_request()
Signed-off-by: Olof Johansson <olof@lixom.net>
mvebu arm for 5.2 (part 1)
- remove improper error message on kirkwood
- a couple a clean-up patch generated from automatic tools
- clean-up in assembly code allowing using LLVM
* tag 'mvebu-arm-5.2-1' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: drop return from void function
ARM: mvebu: prefix coprocessor operand with p
ARM: mvebu: drop unnecessary label
ARM: mvebu: fix a leaked reference by adding missing of_node_put
ARM: mvebu: kirkwood: remove error message when retrieving mac address
Signed-off-by: Olof Johansson <olof@lixom.net>
Two regression fixes for omaps
Two one-liners to fix board-ams-delta booting regression and
logicpd-som-lv MMC card detect to use GPIO_ACTIVE_LOW instead of
IRQ_TYPE_LEVEL_LOW. Note that the board-ams-delta regression has
been in there already since v5.0, so if necessary these can wait
for the merge window.
* tag 'omap-for-v5.1/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: logicpd-som-lv: Fix MMC1 card detect
ARM: OMAP1: ams-delta: fix early boot crash when LED support is disabled
Signed-off-by: Olof Johansson <olof@lixom.net>
Alex Xu reported a regression in strace, caused by the introduction of
the cgroup v2 freezer. The regression can be reproduced by stracing
the following simple program:
#include <unistd.h>
int main() {
write(1, "a", 1);
return 0;
}
An attempt to run strace ./a.out leads to the infinite loop:
[ pre-main omitted ]
write(1, "a", 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
write(1, "a", 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
write(1, "a", 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
write(1, "a", 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
write(1, "a", 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
write(1, "a", 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
[ repeats forever ]
The problem occurs because the traced task leaves ptrace_stop()
(and the signal handling loop) with the frozen bit set. So let's
call cgroup_leave_frozen(true) unconditionally after sleeping
in ptrace_stop().
With this patch applied, strace works as expected:
[ pre-main omitted ]
write(1, "a", 1) = 1
exit_group(0) = ?
+++ exited with 0 +++
Reported-by: Alex Xu <alex_y_xu@yahoo.ca>
Fixes: 76f969e894 ("cgroup: cgroup v2 freezer")
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Pull core fixes from Ingo Molnar:
"A handful of objtool updates, plus a documentation addition for
__ab_c_size()"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Fix whitelist documentation typo
objtool: Fix function fallthrough detection
objtool: Don't use ignore flag for fake jumps
overflow.h: Add comment documenting __ab_c_size()
- more unified assembly conversions for clang
- drop obsolete -mauto-it assembler option
- remove arm_memory_present in preference to the generic version
- remove unused asm/limits.h header
- vdso linker update
We tried to make the assembler warn if unified syntax was not used,
but unfortunately older versions of GCC warn, so the commit had to
be reverted.
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
"ARM development updates:
- more unified assembly conversions for clang
- drop obsolete -mauto-it assembler option
- remove arm_memory_present in preference to the generic version
- remove unused asm/limits.h header
- vdso linker update
We tried to make the assembler warn if unified syntax was not used,
but unfortunately older versions of GCC warn, so the commit had to be
reverted"
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
Revert "ARM: 8846/1: warn if divided syntax assembler is used"
ARM: 8858/1: vdso: use $(LD) instead of $(CC) to link VDSO
ARM: 8855/1: remove unused <asm/limits.h>
ARM: 8850/1: use memblocks_present
ARM: 8854/1: drop -mauto-it
ARM: 8846/1: warn if divided syntax assembler is used
ARM: 8853/1: drop WASM to work around LLVM issue
ARM: 8852/1: uaccess: use unified assembler language syntax
ARM: 8851/1: add TUSERCOND() macro for conditional postfix
- Mostly the usual churn due to options being reordered or not added
in the right locations.
- Some various enabling of new drivers, etc.
... i.e. the usual updates, nothing particularly sticks out.
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Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC defconfig updates from Olof Johansson:
"Mostly the usual churn due to options being reordered or not added in
the right locations.
Some various enabling of new drivers, etc.
... i.e. the usual updates, nothing particularly sticks out"
* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (23 commits)
arm64: defconfig: Update UFSHCD for Hi3660 soc
ARM: multi_v7_defconfig: Enable support for STPMIC1
ARM: multi_v7_defconfig: Enable missing drivers for supported Chromebooks
arm64: defconfig: enable mv-xor driver
ARM: Enable Trusted Foundations for multiplatform ARM v7
ARM: tegra: Enable Trusted Foundations by default
ARM: tegra: Update default configuration for v5.1-rc1
ARM: multi_v7_defconfig: Update for moved options
ARM: multi_v7_defconfig: Update for dropped options
ARM: shmobile: Enable USB [EO]HCI HCD PLATFORM support in shmobile_defconfig
ARM: shmobile: Enable PHY_RCAR_GEN3_USB2 in shmobile_defconfig
ARM: qcom_defconfig: add options for LG Nexus 5 phone
arm64: defconfig: include the Agilex platform to the arm64 defconfig
arm64: defconfig: Add PWM Fan support
arm64: defconfig: Enable Tegra HDA support
ARM: multi_v7_defconfig: Enable support for CFI NOR FLASH
ARM: shmobile: defconfig: Enable support for CFI NOR FLASH
ARM: shmobile: defconfig: Refresh for v5.1-rc1
ARM: multi_v7_defconfig: enable the Amlogic Meson ADC and eFuse drivers
arm64: defconfig: enable fpga and service layer
...
Wire up the mount API syscalls on non-x86 arches.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fix the syscall numbering of the mount API syscalls so that the numbers
match between i386 and x86_64 and that they're in the common numbering
scheme space.
Fixes: a07b200047 ("vfs: syscall: Add open_tree(2) to reference or clone a mount")
Fixes: 2db154b3ea ("vfs: syscall: Add move_mount(2) to move mounts around")
Fixes: 24dcb3d90a ("vfs: syscall: Add fsopen() to prepare for superblock creation")
Fixes: ecdab150fd ("vfs: syscall: Add fsconfig() for configuring and managing a context")
Fixes: 93766fbd26 ("vfs: syscall: Add fsmount() to create a mount for a superblock")
Fixes: cf3cba4a42 ("vfs: syscall: Add fspick() to select a superblock for reconfiguration")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Make the name of the anon inode fd "[fscontext]" instead of "fscontext".
This is minor but most core-kernel anon inode fds already carry square
brackets around their name:
[eventfd]
[eventpoll]
[fanotify]
[io_uring]
[pidfd]
[signalfd]
[timerfd]
[userfaultfd]
For the sake of consistency lets do the same for the fscontext anon inode
fd that comes with the new mount api.
Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Various driver updates for platforms and a couple of the small driver
subsystems we merge through our tree:
Among the larger pieces:
- Power management improvements for TI am335x and am437x (RTC suspend/wake)
- Misc new additions for Amlogic (socinfo updates)
- ZynqMP FPGA manager
- Nvidia improvements for reset/powergate handling
- PMIC wrapper for Mediatek MT8516
- Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC-related driver updates from Olof Johansson:
"Various driver updates for platforms and a couple of the small driver
subsystems we merge through our tree:
Among the larger pieces:
- Power management improvements for TI am335x and am437x (RTC
suspend/wake)
- Misc new additions for Amlogic (socinfo updates)
- ZynqMP FPGA manager
- Nvidia improvements for reset/powergate handling
- PMIC wrapper for Mediatek MT8516
- Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (57 commits)
soc: aspeed: fix Kconfig
soc: add aspeed folder and misc drivers
spi: zynqmp: Fix build break
soc: imx: Add generic i.MX8 SoC driver
MAINTAINERS: Update email for Qualcomm SoC maintainer
memory: tegra: Fix a typos for "fdcdwr2" mc client
Revert "ARM: tegra: Restore memory arbitration on resume from LP1 on Tegra30+"
memory: tegra: Replace readl-writel with mc_readl-mc_writel
memory: tegra: Fix integer overflow on tick value calculation
memory: tegra: Fix missed registers values latching
ARM: tegra: cpuidle: Handle tick broadcasting within cpuidle core on Tegra20/30
optee: allow to work without static shared memory
soc/tegra: pmc: Move powergate initialisation to probe
soc/tegra: pmc: Remove reset sysfs entries on error
soc/tegra: pmc: Fix reset sources and levels
soc: amlogic: meson-gx-pwrc-vpu: Add support for G12A
soc: amlogic: meson-gx-pwrc-vpu: Fix power on/off register bitmask
fpga manager: Adding FPGA Manager support for Xilinx zynqmp
dt-bindings: fpga: Add bindings for ZynqMP fpga driver
firmware: xilinx: Add fpga API's
...
SoC updates, mostly refactorings and cleanups of old legacy platforms.
Major themes this release:
- Conversion of ixp4xx to a modern platform (drivers, DT, bindings)
- Moving some of the ep93xx headers around to get it closer to multiplatform enabled.
- Cleanups of Davinci
This tag also contains a few patches that were queued up as fixes before
5.1 but I didn't get sent in before release.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Olof Johansson:
"SoC updates, mostly refactorings and cleanups of old legacy platforms.
Major themes this release:
- Conversion of ixp4xx to a modern platform (drivers, DT, bindings)
- Moving some of the ep93xx headers around to get it closer to
multiplatform enabled.
- Cleanups of Davinci
This also contains a few patches that were queued up as fixes before
5.1 but I didn't get sent in before release"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (123 commits)
ARM: debug-ll: add default address for digicolor
ARM: u300: regulator: add MODULE_LICENSE()
ARM: ep93xx: move private headers out of mach/*
ARM: ep93xx: move pinctrl interfaces into include/linux/soc
ARM: ep93xx: keypad: stop using mach/platform.h
ARM: ep93xx: move network platform data to separate header
ARM: stm32: add AMBA support for stm32 family
MAINTAINERS: update arch/arm/mach-davinci
ARM: rockchip: add missing of_node_put in rockchip_smp_prepare_pmu
ARM: dts: Add queue manager and NPE to the IXP4xx DTSI
soc: ixp4xx: qmgr: Add DT probe code
soc: ixp4xx: qmgr: Add DT bindings for IXP4xx qmgr
soc: ixp4xx: npe: Add DT probe code
soc: ixp4xx: Add DT bindings for IXP4xx NPE
soc: ixp4xx: qmgr: Pass resources
soc: ixp4xx: Remove unused functions
soc: ixp4xx: Uninline several functions
soc: ixp4xx: npe: Pass addresses as resources
ARM: ixp4xx: Turn the QMGR into a platform device
ARM: ixp4xx: Turn the NPE into a platform device
...
When __afs_break_callback() clears the CB_PROMISED flag, it increments
vnode->cb_break to trigger a future refetch of the status and callback -
however it also calls afs_clear_permits(), which also increments
vnode->cb_break.
Fix this by removing the increment from afs_clear_permits().
Whilst we're at it, fix the conditional call to afs_put_permits() as the
function checks to see if the argument is NULL, so the check is redundant.
Fixes: be080a6f43 ("afs: Overhaul permit caching");
Signed-off-by: David Howells <dhowells@redhat.com>
When applying the status and callback in the response of an operation,
apply them in the same critical section so that there's no race between
checking the callback state and checking status-dependent state (such as
the data version).
Fix this by:
(1) Allocating a joint {status,callback} record (afs_status_cb) before
calling the RPC function for each vnode for which the RPC reply
contains a status or a status plus a callback. A flag is set in the
record to indicate if a callback was actually received.
(2) These records are passed into the RPC functions to be filled in. The
afs_decode_status() and yfs_decode_status() functions are removed and
the cb_lock is no longer taken.
(3) xdr_decode_AFSFetchStatus() and xdr_decode_YFSFetchStatus() no longer
update the vnode.
(4) xdr_decode_AFSCallBack() and xdr_decode_YFSCallBack() no longer update
the vnode.
(5) vnodes, expected data-version numbers and callback break counters
(cb_break) no longer need to be passed to the reply delivery
functions.
Note that, for the moment, the file locking functions still need
access to both the call and the vnode at the same time.
(6) afs_vnode_commit_status() is now given the cb_break value and the
expected data_version and the task of applying the status and the
callback to the vnode are now done here.
This is done under a single taking of vnode->cb_lock.
(7) afs_pages_written_back() is now called by afs_store_data() rather than
by the reply delivery function.
afs_pages_written_back() has been moved to before the call point and
is now given the first and last page numbers rather than a pointer to
the call.
(8) The indicator from YFS.RemoveFile2 as to whether the target file
actually got removed (status.abort_code == VNOVNODE) rather than
merely dropping a link is now checked in afs_unlink rather than in
xdr_decode_YFSFetchStatus().
Supplementary fixes:
(*) afs_cache_permit() now gets the caller_access mask from the
afs_status_cb object rather than picking it out of the vnode's status
record. afs_fetch_status() returns caller_access through its argument
list for this purpose also.
(*) afs_inode_init_from_status() now uses a write lock on cb_lock rather
than a read lock and now sets the callback inside the same critical
section.
Fixes: c435ee3455 ("afs: Overhaul the callback handling")
Signed-off-by: David Howells <dhowells@redhat.com>
__afs_break_callback() holds vnode->lock around its call of
afs_lock_may_be_available() - which also takes that lock.
Fix this by not taking the lock in __afs_break_callback().
Also, there's no point checking the granted_locks and pending_locks queues;
it's sufficient to check lock_state, so move that check out of
afs_lock_may_be_available() into __afs_break_callback() to replace the
queue checks.
Fixes: e8d6c55412 ("AFS: implement file locking")
Signed-off-by: David Howells <dhowells@redhat.com>
Always ask for the reply time from AF_RXRPC as it's used to calculate the
callback expiry time and lock expiry times, so it's needed by most FS
operations.
Signed-off-by: David Howells <dhowells@redhat.com>
Don't invalidate the callback promise on a directory if the
AFS_VNODE_DIR_VALID flag is not set (which indicates that the directory
contents are invalid, due to edit failure, callback break, page reclaim).
The directory will be reloaded next time the directory is accessed, so
clearing the callback flag at this point may race with a reload of the
directory and cancel it's recorded callback promise.
Fixes: f3ddee8dc4 ("afs: Fix directory handling")
Signed-off-by: David Howells <dhowells@redhat.com>
afs_do_lookup() will do an order-1 allocation to allocate status records if
there are more than 39 vnodes to stat.
Fix this by allocating an array of {status,callback} records for each vnode
we want to examine using vmalloc() if larger than a page.
This not only gets rid of the order-1 allocation, but makes it easier to
grow beyond 50 records for YFS servers. It also allows us to move to
{status,callback} tuples for other calls too and makes it easier to lock
across the application of the status and the callback to the vnode.
Fixes: 5cf9dd55a0 ("afs: Prospectively look up extra files when doing a single lookup")
Signed-off-by: David Howells <dhowells@redhat.com>
Fix the calculation of the expiry time of a callback promise, as obtained
from operations like FS.FetchStatus and FS.FetchData.
The time should be based on the timestamp of the first DATA packet in the
reply and the calculation needs to turn the ktime_t timestamp into a
time64_t.
Fixes: c435ee3455 ("afs: Overhaul the callback handling")
Signed-off-by: David Howells <dhowells@redhat.com>
Replace the afs_call::reply[] array with a bunch of typed members so that
the compiler can use type-checking on them. It's also easier for the eye
to see what's going on.
Signed-off-by: David Howells <dhowells@redhat.com>
Don't pass the vnode pointer through into the inline bulk status op. We
want to process the status records outside of it anyway.
Signed-off-by: David Howells <dhowells@redhat.com>
Make certain RPC operations non-interruptible, including:
(*) Set attributes
(*) Store data
We don't want to get interrupted during a flush on close, flush on
unlock, writeback or an inode update, leaving us in a state where we
still need to do the writeback or update.
(*) Extend lock
(*) Release lock
We don't want to get lock extension interrupted as the file locks on
the server are time-limited. Interruption during lock release is less
of an issue since the lock is time-limited, but it's better to
complete the release to avoid a several-minute wait to recover it.
*Setting* the lock isn't a problem if it's interrupted since we can
just return to the user and tell them they were interrupted - at
which point they can elect to retry.
(*) Silly unlink
We want to remove silly unlink files if we can, rather than leaving
them for the salvager to clear up.
Note that whilst these calls are no longer interruptible, they do have
timeouts on them, so if the server stops responding the call will fail with
something like ETIME or ECONNRESET.
Without this, the following:
kAFS: Unexpected error from FS.StoreData -512
appears in dmesg when a pending store data gets interrupted and some
processes may just hang.
Additionally, make the code that checks/updates the server record ignore
failure due to interruption if the main call is uninterruptible and if the
server has an address list. The next op will check it again since the
expiration time on the old list has past.
Fixes: d2ddc776a4 ("afs: Overhaul volume and server record caching and fileserver rotation")
Reported-by: Jonathan Billings <jsbillings@jsbillings.org>
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Allow kernel services using AF_RXRPC to indicate that a call should be
non-interruptible. This allows kafs to make things like lock-extension and
writeback data storage calls non-interruptible.
If this is set, signals will be ignored for operations on that call where
possible - such as waiting to get a call channel on an rxrpc connection.
It doesn't prevent UDP sendmsg from being interrupted, but that will be
handled by packet retransmission.
rxrpc_kernel_recv_data() isn't affected by this since that never waits,
preferring instead to return -EAGAIN and leave the waiting to the caller.
Userspace initiated calls can't be set to be uninterruptible at this time.
Signed-off-by: David Howells <dhowells@redhat.com>
afs_check/update_server_record() should be setting fc->error rather than
fc->ac.error as they're called from within the cursor iteration function.
afs_fs_cursor::error is where the error code of the attempt to call the
operation on multiple servers is integrated and is the final result,
whereas afs_addr_cursor::error is used to hold the error from individual
iterations of the call loop. (Note there's also an afs_vl_cursor which
also wraps afs_addr_cursor for accessing VL servers rather than file
servers).
Fix this by setting fc->error in the afs_check/update_server_record() so
that any error incurred whilst talking to the VL server correctly
propagates to the final result.
This results in:
kAFS: Unexpected error from FS.StoreData -512
being seen, even though the store-data op is non-interruptible. The error
is actually coming from the server record update getting interrupted.
Fixes: d2ddc776a4 ("afs: Overhaul volume and server record caching and fileserver rotation")
Signed-off-by: David Howells <dhowells@redhat.com>
If an older AFS server doesn't support an operation, it may accept the call
and then sit on it forever, happily responding to pings that make kafs
think that the call is still alive.
Fix this by setting the maximum lifespan of Volume Location service calls
in particular and probe calls in general so that they don't run on
endlessly if they're not supported.
Signed-off-by: David Howells <dhowells@redhat.com>
Pull thermal soc updates from Eduardo Valentin:
- thermal core has a new devm_* API for registering cooling devices. I
took the entire series, that is why you see changes on drivers/hwmon
in this pull (Guenter Roeck)
- rockchip thermal driver gains support to PX30 SoC (Elaine Zhang)
- the generic-adc thermal driver now considers the lookup table DT
property as optional (Jean-Francois Dagenais)
- Refactoring of tsens thermal driver (Amit Kucheria)
- Cleanups on cpu cooling driver (Daniel Lezcano)
- broadcom thermal driver dropped support to ACPI (Srinath Mannam)
- tegra thermal driver gains support to OC hw throttle and GPU throtle
(Wei Ni)
- Fixes in several thermal drivers.
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal: (59 commits)
hwmon: (pwm-fan) Use devm_thermal_of_cooling_device_register
hwmon: (npcm750-pwm-fan) Use devm_thermal_of_cooling_device_register
hwmon: (mlxreg-fan) Use devm_thermal_of_cooling_device_register
hwmon: (gpio-fan) Use devm_thermal_of_cooling_device_register
hwmon: (aspeed-pwm-tacho) Use devm_thermal_of_cooling_device_register
thermal: rcar_gen3_thermal: Fix to show correct trip points number
thermal: rcar_thermal: update calculation formula for R-Car Gen3 SoCs
thermal: cpu_cooling: Actually trace CPU load in thermal_power_cpu_get_power
thermal: rockchip: Support the PX30 SoC in thermal driver
dt-bindings: rockchip-thermal: Support the PX30 SoC compatible
thermal: rockchip: fix up the tsadc pinctrl setting error
thermal: broadcom: Remove ACPI support
thermal: Fix build error of missing devm_ioremap_resource on UM
thermal/drivers/cpu_cooling: Remove pointless field
thermal/drivers/cpu_cooling: Add Software Package Data Exchange (SPDX)
thermal/drivers/cpu_cooling: Fixup the header and copyright
thermal/drivers/cpu_cooling: Remove pointless test in power2state()
thermal: rcar_gen3_thermal: disable interrupt in .remove
thermal: rcar_gen3_thermal: fix interrupt type
thermal: Introduce devm_thermal_of_cooling_device_register
...
Use the new struct_size() helper to keep code simple.
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
