Limit per userns sysctls to only be opened for write by a holder
of CAP_SYS_RESOURCE.
Add all of the necessary boilerplate for having per user namespace
sysctls.
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Add the necessary boiler plate to move freeing of user namespaces into
work queue and thus into process context where things can sleep.
This is a necessary precursor to per user namespace sysctls.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Passing nsproxy into sysctl_table_root.lookup was a premature
optimization in attempt to avoid depending on current. The
directory /proc/self/sys has not appeared and if and when
it does this code will need to be reviewed closely and reworked
anyway. So remove the premature optimization.
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
The AC100 is a multifunction device with an audio codec subsystem and
an RTC subsystem. These two subsystems share a common register space
and host interface.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Adding a new callback that will provide the error result for a transaction.
The result is allocated on the stack and the callback should create a copy
if it wishes to retain the information after exiting. The result parameter
is now defined and takes over the dummy void pointer we placed in the
helper functions previously. dmaengine drivers should start converting
to the new "callback_result" callback in order to receive transaction
results.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This patchs add the new EXTCON_CHG_WPT for Wireless Power Transfer[1].
The Wireless Power Transfer is the transmission of electronical energy
from a power source. The EXTCON_CHG_WPT has the EXTCON_TYPE_CHG.
[1] https://en.wikipedia.org/wiki/Wireless_power_transfer
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This patch adds the new EXTCON_DISP_HMD id for Head-mounted Display[1] device.
The HMD device is usually for USB connector type So, the HMD connector
has the two extcon types of both EXTCON_TYPE_DISP and EXTCON_TYPE_USB.
[1] https://en.wikipedia.org/wiki/Head-mounted_display
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Add EXTCON_DISP_DP for the Display external connector. For Type-C
connector the DisplayPort can work as an Alternate Mode(VESA DisplayPort
Alt Mode on USB Type-C Standard). The Type-C support both normal
and flipped orientation, so add a property to extcon.
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
This patch adds the synchronization extcon APIs to support the notifications
for both state and property. When extcon_*_sync() functions is called,
the extcon informs the information from extcon provider to extcon client.
The extcon driver may need to change the both state and multiple properties
at the same time. After setting the data of a external connector,
the extcon send the notification to client driver with the extcon_*_sync().
The list of new extcon APIs as following:
- extcon_sync() : Send the notification for each external connector to
synchronize the information between extcon provider driver
and extcon client driver.
- extcon_set_state_sync() : Set the state of external connector with noti.
- extcon_set_property_sync() : Set the property of external connector with noti.
For example,
case 1, change the state of external connector and synchronized the data.
extcon_set_state_sync(edev, EXTCON_USB, 1);
case 2, change both the state and property of external connector
and synchronized the data.
extcon_set_state(edev, EXTCON_USB, 1);
extcon_set_property(edev, EXTCON_USB, EXTCON_PROP_USB_VBUS 1);
extcon_sync(edev, EXTCON_USB);
case 3, change the property of external connector and synchronized the data.
extcon_set_property(edev, EXTCON_USB, EXTCON_PROP_USB_VBUS, 0);
extcon_sync(edev, EXTCON_USB);
case 4, change the property of external connector and synchronized the data.
extcon_set_property_sync(edev, EXTCON_USB, EXTCON_PROP_USB_VBUS, 0);
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
This patch just renames the existing extcon_get/set_cable_state_()
as following because of maintaining the function naming pattern
like as extcon APIs for property.
- extcon_set_cable_state_() -> extcon_set_state()
- extcon_get_cable_state_() -> extcon_get_state()
But, this patch remains the old extcon_set/get_cable_state_() functions
to prevent the build break. After altering new APIs, remove the old APIs.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
This patch adds the support of the property capability setting. This function
decides the supported properties of each external connector on extcon provider
driver.
Ths list of new extcon APIs to get/set the capability of property as following:
- int extcon_get_property_capability(struct extcon_dev *edev,
unsigned int id, unsigned int prop);
- int extcon_set_property_capability(struct extcon_dev *edev,
unsigned int id, unsigned int prop);
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
This patch support the extcon property for the external connector
because each external connector might have the property according to
the H/W design and the specific characteristics.
- EXTCON_PROP_USB_[property name]
- EXTCON_PROP_CHG_[property name]
- EXTCON_PROP_JACK_[property name]
- EXTCON_PROP_DISP_[property name]
Add the new extcon APIs to get/set the property value as following:
- int extcon_get_property(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value *prop_val)
- int extcon_set_property(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value prop_val)
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
This patch adds the new extcon type to group the each connecotr
into following five category. This type would be used to handle
the connectors as a group unit instead of a connector unit.
- EXTCON_TYPE_USB : USB connector
- EXTCON_TYPE_CHG : Charger connector
- EXTCON_TYPE_JACK : Jack connector
- EXTCON_TYPE_DISP : Display connector
- EXTCON_TYPE_MISC : Miscellaneous connector
Also, each external connector is possible to belong to one more extcon type.
In caes of EXTCON_CHG_USB_SDP, it have the EXTCON_TYPE_CHG and EXTCON_TYPE_USB.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
This patch restrict the usage of extcon_update_state() in the extcon
core because the extcon_update_state() use the bit masking to change
the state of external connector. When this function is used in device drivers,
it may occur the probelm with the handling mistake of bit masking.
Also, this patch removes the extcon_get/set_state() functions because these
functions use the bit masking which is reluctant way. Instead, extcon
provides the extcon_set/get_cable_state_() functions.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This patch removes the usage of extcon_set_state() because it uses the bit
masking to change the state of external connectors. The extcon framework
should handle the state by extcon_set/get_cable_state_() with extcon id.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Since commit 63a4cc2486, bio->bi_rw contains flags in the lower
portion and the op code in the higher portions. This means that
old code that relies on manually setting bi_rw is most likely
going to be broken. Instead of letting that brokeness linger,
rename the member, to force old and out-of-tree code to break
at compile time instead of at runtime.
No intended functional changes in this commit.
Signed-off-by: Jens Axboe <axboe@fb.com>
Commit abf545484d changed it from an 'rw' flags type to the
newer ops based interface, but now we're effectively leaking
some bdev internals to the rest of the kernel. Since we only
care about whether it's a read or a write at that level, just
pass in a bool 'is_write' parameter instead.
Then we can also move op_is_write() and friends back under
CONFIG_BLOCK protection.
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Pull more vfs updates from Al Viro:
"Assorted cleanups and fixes.
In the "trivial API change" department - ->d_compare() losing 'parent'
argument"
* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
cachefiles: Fix race between inactivating and culling a cache object
9p: use clone_fid()
9p: fix braino introduced in "9p: new helper - v9fs_parent_fid()"
vfs: make dentry_needs_remove_privs() internal
vfs: remove file_needs_remove_privs()
vfs: fix deadlock in file_remove_privs() on overlayfs
get rid of 'parent' argument of ->d_compare()
cifs, msdos, vfat, hfs+: don't bother with parent in ->d_compare()
affs ->d_compare(): don't bother with ->d_inode
fold _d_rehash() and __d_rehash() together
fold dentry_rcuwalk_invalidate() into its only remaining caller
Pull qstr constification updates from Al Viro:
"Fairly self-contained bunch - surprising lot of places passes struct
qstr * as an argument when const struct qstr * would suffice; it
complicates analysis for no good reason.
I'd prefer to feed that separately from the assorted fixes (those are
in #for-linus and with somewhat trickier topology)"
* 'work.const-qstr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
qstr: constify instances in adfs
qstr: constify instances in lustre
qstr: constify instances in f2fs
qstr: constify instances in ext2
qstr: constify instances in vfat
qstr: constify instances in procfs
qstr: constify instances in fuse
qstr constify instances in fs/dcache.c
qstr: constify instances in nfs
qstr: constify instances in ocfs2
qstr: constify instances in autofs4
qstr: constify instances in hfs
qstr: constify instances in hfsplus
qstr: constify instances in logfs
qstr: constify dentry_init_security
Pull virtio/vhost updates from Michael Tsirkin:
- new vsock device support in host and guest
- platform IOMMU support in host and guest, including compatibility
quirks for legacy systems.
- misc fixes and cleanups.
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
VSOCK: Use kvfree()
vhost: split out vringh Kconfig
vhost: detect 32 bit integer wrap around
vhost: new device IOTLB API
vhost: drop vringh dependency
vhost: convert pre sorted vhost memory array to interval tree
vhost: introduce vhost memory accessors
VSOCK: Add Makefile and Kconfig
VSOCK: Introduce vhost_vsock.ko
VSOCK: Introduce virtio_transport.ko
VSOCK: Introduce virtio_vsock_common.ko
VSOCK: defer sock removal to transports
VSOCK: transport-specific vsock_transport functions
vhost: drop vringh dependency
vop: pull in vhost Kconfig
virtio: new feature to detect IOMMU device quirk
balloon: check the number of available pages in leak balloon
vhost: lockless enqueuing
vhost: simplify work flushing
Pull more KVM updates from Paolo Bonzini:
- ARM bugfix and MSI injection support
- x86 nested virt tweak and OOPS fix
- Simplify pvclock code (vdso bits acked by Andy Lutomirski).
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
nvmx: mark ept single context invalidation as supported
nvmx: remove comment about missing nested vpid support
KVM: lapic: fix access preemption timer stuff even if kernel_irqchip=off
KVM: documentation: fix KVM_CAP_X2APIC_API information
x86: vdso: use __pvclock_read_cycles
pvclock: introduce seqcount-like API
arm64: KVM: Set cpsr before spsr on fault injection
KVM: arm: vgic-irqfd: Workaround changing kvm_set_routing_entry prototype
KVM: arm/arm64: Enable MSI routing
KVM: arm/arm64: Enable irqchip routing
KVM: Move kvm_setup_default/empty_irq_routing declaration in arch specific header
KVM: irqchip: Convey devid to kvm_set_msi
KVM: Add devid in kvm_kernel_irq_routing_entry
KVM: api: Pass the devid in the msi routing entry
Pull pwm updates from Thierry Reding:
"This set of changes improve some aspects of the atomic API as well as
make use of this new API in the regulator framework to allow properly
dealing with critical regulators controlled by a PWM.
Aside from that there's a bunch of updates and cleanups for existing
drivers, as well as the addition of new drivers for the Broadcom
iProc, STMPE and ChromeOS EC controllers"
* tag 'pwm/for-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (44 commits)
regulator: pwm: Document pwm-dutycycle-unit and pwm-dutycycle-range
regulator: pwm: Support extra continuous mode cases
pwm: Add ChromeOS EC PWM driver
dt-bindings: pwm: Add binding for ChromeOS EC PWM
mfd: cros_ec: Add EC_PWM function definitions
mfd: cros_ec: Add cros_ec_cmd_xfer_status() helper
pwm: atmel: Use of_device_get_match_data()
pwm: atmel: Fix checkpatch warnings
pwm: atmel: Fix disabling of PWM channels
dt-bindings: pwm: Add R-Car H3 device tree bindings
pwm: rcar: Use ARCH_RENESAS
pwm: tegra: Add support for Tegra186
dt-bindings: pwm: tegra: Add compatible string for Tegra186
pwm: tegra: Avoid overflow when calculating duty cycle
pwm: tegra: Allow 100 % duty cycle
pwm: tegra: Add support for reset control
pwm: tegra: Rename mmio_base to regs
pwm: tegra: Remove useless padding
pwm: tegra: Drop NUM_PWM macro
pwm: lpc32xx: Set PWM_PIN_LEVEL bit to default value
...
Pull block fixes from Jens Axboe:
"Here's the second round of block updates for this merge window.
It's a mix of fixes for changes that went in previously in this round,
and fixes in general. This pull request contains:
- Fixes for loop from Christoph
- A bdi vs gendisk lifetime fix from Dan, worth two cookies.
- A blk-mq timeout fix, when on frozen queues. From Gabriel.
- Writeback fix from Jan, ensuring that __writeback_single_inode()
does the right thing.
- Fix for bio->bi_rw usage in f2fs from me.
- Error path deadlock fix in blk-mq sysfs registration from me.
- Floppy O_ACCMODE fix from Jiri.
- Fix to the new bio op methods from Mike.
One more followup will be coming here, ensuring that we don't
propagate the block types outside of block. That, and a rename of
bio->bi_rw is coming right after -rc1 is cut.
- Various little fixes"
* 'for-linus' of git://git.kernel.dk/linux-block:
mm/block: convert rw_page users to bio op use
loop: make do_req_filebacked more robust
loop: don't try to use AIO for discards
blk-mq: fix deadlock in blk_mq_register_disk() error path
Include: blkdev: Removed duplicate 'struct request;' declaration.
Fixup direct bi_rw modifiers
block: fix bdi vs gendisk lifetime mismatch
blk-mq: Allow timeouts to run while queue is freezing
nbd: fix race in ioctl
block: fix use-after-free in seq file
f2fs: drop bio->bi_rw manual assignment
block: add missing group association in bio-cloning functions
blkcg: kill unused field nr_undestroyed_grps
writeback: Write dirty times for WB_SYNC_ALL writeback
floppy: fix open(O_ACCMODE) for ioctl-only open
Pull more input updates from Dmitry Torokhov:
"Two new drivers for touchscreen controllers:
- Silead touchscreen controllers
- SiS 9200 family touchscreen controllers
and a few driver fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: silead - remove some dead code
Input: sis-i2c - select CONFIG_CRC_ITU_T
Input: add driver for SiS 9200 family I2C touchscreen controllers
Input: ili210x - fix permissions on "calibrate" attribute
Input: elan_i2c - properly wake up touchpad on ASUS laptops
Input: add driver for Silead touchscreens
Input: elantech - fix debug dump of the current packet
Input: rotary_encoder - support binary encoding of states
Input: xpad - power off wireless 360 controllers on suspend
Input: i8042 - break load dependency between atkbd/psmouse and i8042
Input: synaptics-rmi4 - do not check for NULL when calling of_node_put()
Input: cros_ec_keyb - cleanup use of dev
We don't want to miss a lease period renewal due to the TCP connection
failing to reconnect in a timely fashion. To ensure this doesn't happen,
cap the reconnection timer so that we retry the connection attempt
at least every 1/2 lease period.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Pull RTC updates from Alexandre Belloni:
"RTC for 4.8
Cleanups:
- huge cleanup of rtc-generic and char/genrtc this allowed to cleanup
rtc-cmos, rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc
- move mn10300 to rtc-cmos
Subsystem:
- fix wakealarms after hibernate
- multiples fixes for rctest
- simplify implementations of .read_alarm
New drivers:
- Maxim MAX6916
Drivers:
- ds1307: fix weekday
- m41t80: add wakeup support
- pcf85063: add support for PCF85063A variant
- rv8803: extend i2c fix and other fixes
- s35390a: fix alarm reading, this fixes instant reboot after
shutdown for QNAP TS-41x
- s3c: clock fixes"
* tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (65 commits)
rtc: rv8803: Clear V1F when setting the time
rtc: rv8803: Stop the clock while setting the time
rtc: rv8803: Always apply the I²C workaround
rtc: rv8803: Fix read day of week
rtc: rv8803: Remove the check for valid time
rtc: rv8803: Kconfig: Indicate rx8900 support
rtc: asm9260: remove .owner field for driver
rtc: at91sam9: Fix missing spin_lock_init()
rtc: m41t80: add suspend handlers for alarm IRQ
rtc: m41t80: make it a real error message
rtc: pcf85063: Add support for the PCF85063A device
rtc: pcf85063: fix year range
rtc: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy
rtc: explicitly set tm_sec = 0 for drivers with minute accurancy
rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq()
rtc: s3c: Remove unnecessary call to disable already disabled clock
rtc: abx80x: use devm_add_action_or_reset()
rtc: m41t80: use devm_add_action_or_reset()
rtc: fix a typo and reduce three empty lines to one
rtc: s35390a: improve two comments in .set_alarm
...
Pull base rdma updates from Doug Ledford:
"Round one of 4.8 code: while this is mostly normal, there is a new
driver in here (the driver was hosted outside the kernel for several
years and is actually a fairly mature and well coded driver). It
amounts to 13,000 of the 16,000 lines of added code in here.
Summary:
- Updates/fixes for iw_cxgb4 driver
- Updates/fixes for mlx5 driver
- Add flow steering and RSS API
- Add hardware stats to mlx4 and mlx5 drivers
- Add firmware version API for RDMA driver use
- Add the rxe driver (this is a software RoCE driver that makes any
Ethernet device a RoCE device)
- Fixes for i40iw driver
- Support for send only multicast joins in the cma layer
- Other minor fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (72 commits)
Soft RoCE driver
IB/core: Support for CMA multicast join flags
IB/sa: Add cached attribute containing SM information to SA port
IB/uverbs: Fix race between uverbs_close and remove_one
IB/mthca: Clean up error unwind flow in mthca_reset()
IB/mthca: NULL arg to pci_dev_put is OK
IB/hfi1: NULL arg to sc_return_credits is OK
IB/mlx4: Add diagnostic hardware counters
net/mlx4: Query performance and diagnostics counters
net/mlx4: Add diagnostic counters capability bit
Use smaller 512 byte messages for portmapper messages
IB/ipoib: Report SG feature regardless of HW UD CSUM capability
IB/mlx4: Don't use GFP_ATOMIC for CQ resize struct
IB/hfi1: Disable by default
IB/rdmavt: Disable by default
IB/mlx5: Fix port counter ID association to QP offset
IB/mlx5: Fix iteration overrun in GSI qps
i40iw: Add NULL check for puda buffer
i40iw: Change dup_ack_thresh to u8
i40iw: Remove unnecessary check for moving CQ head
...
Pull nfsd updates from Bruce Fields:
"Highlights:
- Trond made a change to the server's tcp logic that allows a fast
client to better take advantage of high bandwidth networks, but may
increase the risk that a single client could starve other clients;
a new sunrpc.svc_rpc_per_connection_limit parameter should help
mitigate this in the (hopefully unlikely) event this becomes a
problem in practice.
- Tom Haynes added a minimal flex-layout pnfs server, which is of no
use in production for now--don't build it unless you're doing
client testing or further server development"
* tag 'nfsd-4.8' of git://linux-nfs.org/~bfields/linux: (32 commits)
nfsd: remove some dead code in nfsd_create_locked()
nfsd: drop unnecessary MAY_EXEC check from create
nfsd: clean up bad-type check in nfsd_create_locked
nfsd: remove unnecessary positive-dentry check
nfsd: reorganize nfsd_create
nfsd: check d_can_lookup in fh_verify of directories
nfsd: remove redundant zero-length check from create
nfsd: Make creates return EEXIST instead of EACCES
SUNRPC: Detect immediate closure of accepted sockets
SUNRPC: accept() may return sockets that are still in SYN_RECV
nfsd: allow nfsd to advertise multiple layout types
nfsd: Close race between nfsd4_release_lockowner and nfsd4_lock
nfsd/blocklayout: Make sure calculate signature/designator length aligned
xfs: abstract block export operations from nfsd layouts
SUNRPC: Remove unused callback xpo_adjust_wspace()
SUNRPC: Change TCP socket space reservation
SUNRPC: Add a server side per-connection limit
SUNRPC: Micro optimisation for svc_data_ready
SUNRPC: Call the default socket callbacks instead of open coding
SUNRPC: lock the socket while detaching it
...
Pull m68knommu updates from Greg Ungerer:
"This series is all about Nicolas flat format support for MMU systems.
Traditional m68k no-MMU flat format binaries can now be run on m68k
MMU enabled systems too. The series includes some nice cleanups of
the binfmt_flat code and converts it to using proper user space
accessor functions.
With all this in place you can boot and run a complete no-MMU flat
format based user space on an MMU enabled system"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: enable binfmt_flat on systems with an MMU
binfmt_flat: allow compressed flat binary format to work on MMU systems
binfmt_flat: add MMU-specific support
binfmt_flat: update libraries' data segment pointer with userspace accessors
binfmt_flat: use clear_user() rather than memset() to clear .bss
binfmt_flat: use proper user space accessors with old relocs code
binfmt_flat: use proper user space accessors with relocs processing code
binfmt_flat: clean up create_flat_tables() and stack accesses
binfmt_flat: use generic transfer_args_to_stack()
elf_fdpic_transfer_args_to_stack(): make it generic
binfmt_flat: prevent kernel dammage from corrupted executable headers
binfmt_flat: convert printk invocations to their modern form
binfmt_flat: assorted cleanups
m68k: use same start_thread() on MMU and no-MMU
m68k: fix file path comment
m68k: fix bFLT executable running on MMU enabled systems
The rw_page users were not converted to use bio/req ops. As a result
bdev_write_page is not passing down REQ_OP_WRITE and the IOs will
be sent down as reads.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Fixes: 4e1b2d52a8 ("block, fs, drivers: remove REQ_OP compat defs and related code")
Modified by me to:
1) Drop op_flags passing into ->rw_page(), as we don't use it.
2) Make op_is_write() and friends safe to use for !CONFIG_BLOCK
Signed-off-by: Jens Axboe <axboe@fb.com>
In include/linux/blkdev.h duplicate declarations of the request
struct exist. Cleaned up by removing the second, unneeded
declaration.
Signed-off-by: John Pittman <jpittman@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
The name for a bdi of a gendisk is derived from the gendisk's devt.
However, since the gendisk is destroyed before the bdi it leaves a
window where a new gendisk could dynamically reuse the same devt while a
bdi with the same name is still live. Arrange for the bdi to hold a
reference against its "owner" disk device while it is registered.
Otherwise we can hit sysfs duplicate name collisions like the following:
WARNING: CPU: 10 PID: 2078 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x64/0x80
sysfs: cannot create duplicate filename '/devices/virtual/bdi/259:1'
Hardware name: HP ProLiant DL580 Gen8, BIOS P79 05/06/2015
0000000000000286 0000000002c04ad5 ffff88006f24f970 ffffffff8134caec
ffff88006f24f9c0 0000000000000000 ffff88006f24f9b0 ffffffff8108c351
0000001f0000000c ffff88105d236000 ffff88105d1031e0 ffff8800357427f8
Call Trace:
[<ffffffff8134caec>] dump_stack+0x63/0x87
[<ffffffff8108c351>] __warn+0xd1/0xf0
[<ffffffff8108c3cf>] warn_slowpath_fmt+0x5f/0x80
[<ffffffff812a0d34>] sysfs_warn_dup+0x64/0x80
[<ffffffff812a0e1e>] sysfs_create_dir_ns+0x7e/0x90
[<ffffffff8134faaa>] kobject_add_internal+0xaa/0x320
[<ffffffff81358d4e>] ? vsnprintf+0x34e/0x4d0
[<ffffffff8134ff55>] kobject_add+0x75/0xd0
[<ffffffff816e66b2>] ? mutex_lock+0x12/0x2f
[<ffffffff8148b0a5>] device_add+0x125/0x610
[<ffffffff8148b788>] device_create_groups_vargs+0xd8/0x100
[<ffffffff8148b7cc>] device_create_vargs+0x1c/0x20
[<ffffffff811b775c>] bdi_register+0x8c/0x180
[<ffffffff811b7877>] bdi_register_dev+0x27/0x30
[<ffffffff813317f5>] add_disk+0x175/0x4a0
Cc: <stable@vger.kernel.org>
Reported-by: Yi Zhang <yizhan@redhat.com>
Tested-by: Yi Zhang <yizhan@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Fixed up missing 0 return in bdi_register_owner().
Signed-off-by: Jens Axboe <axboe@fb.com>
When a bio is cloned, the newly created bio must be associated with
the same blkcg as the original bio (if BLK_CGROUP is enabled). If
this operation is not performed, then the new bio is not associated
with any group, and the group of the current task is returned when
the group of the bio is requested.
Depending on the cloning frequency, this may cause a large
percentage of the bios belonging to a given group to be treated
as if belonging to other groups (in most cases as if belonging to
the root group). The expected group isolation may thereby be broken.
This commit adds the missing association in bio-cloning functions.
Fixes: da2f0f74cf ("Btrfs: add support for blkio controllers")
Cc: stable@vger.kernel.org # v4.3+
Signed-off-by: Paolo Valente <paolo.valente@linaro.org>
Reviewed-by: Nikolay Borisov <kernel@kyup.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Pull module updates from Rusty Russell:
"The only interesting thing here is Jessica's patch to add
ro_after_init support to modules. The rest are all trivia"
* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
extable.h: add stddef.h so "NULL" definition is not implicit
modules: add ro_after_init support
jump_label: disable preemption around __module_text_address().
exceptions: fork exception table content from module.h into extable.h
modules: Add kernel parameter to blacklist modules
module: Do a WARN_ON_ONCE() for assert module mutex not held
Documentation/module-signing.txt: Note need for version info if reusing a key
module: Invalidate signatures on force-loaded modules
module: Issue warnings when tainting kernel
module: fix redundant test.
module: fix noreturn attribute for __module_put_and_exit()
The dma-mapping core and the implementations do not change the DMA
attributes passed by pointer. Thus the pointer can point to const data.
However the attributes do not have to be a bitfield. Instead unsigned
long will do fine:
1. This is just simpler. Both in terms of reading the code and setting
attributes. Instead of initializing local attributes on the stack
and passing pointer to it to dma_set_attr(), just set the bits.
2. It brings safeness and checking for const correctness because the
attributes are passed by value.
Semantic patches for this change (at least most of them):
virtual patch
virtual context
@r@
identifier f, attrs;
@@
f(...,
- struct dma_attrs *attrs
+ unsigned long attrs
, ...)
{
...
}
@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)
and
// Options: --all-includes
virtual patch
virtual context
@r@
identifier f, attrs;
type t;
@@
t f(..., struct dma_attrs *attrs);
@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)
Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Acked-by: Mark Salter <msalter@redhat.com> [c6x]
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> [cris]
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> [drm]
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
Acked-by: Fabien Dessenne <fabien.dessenne@st.com> [bdisp]
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> [vb2-core]
Acked-by: David Vrabel <david.vrabel@citrix.com> [xen]
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen swiotlb]
Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon]
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [s390]
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> [avr32]
Acked-by: Vineet Gupta <vgupta@synopsys.com> [arc]
Acked-by: Robin Murphy <robin.murphy@arm.com> [arm64 and dma-iommu]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
KVM/ARM Changes for v4.8 - Take 2
Includes GSI routing support to go along with the new VGIC and a small fix that
has been cooking in -next for a while.
Expose IB diagnostic hardware counters.
The counters count IB events and are applicable for IB and RoCE.
The counters can be divided into two groups, per device and per port.
Device counters are always exposed.
Port counters are exposed only if the firmware supports per port counters.
rq_num_dup and sq_num_to are only exposed if we have firmware support
for them, if we do, we expose them per device and per port.
rq_num_udsdprd and num_cqovf are device only counters.
rq - denotes responder.
sq - denotes requester.
|-----------------------|---------------------------------------|
| Name | Description |
|-----------------------|---------------------------------------|
|rq_num_lle | Number of local length errors |
|-----------------------|---------------------------------------|
|sq_num_lle | number of local length errors |
|-----------------------|---------------------------------------|
|rq_num_lqpoe | Number of local QP operation errors |
|-----------------------|---------------------------------------|
|sq_num_lqpoe | Number of local QP operation errors |
|-----------------------|---------------------------------------|
|rq_num_lpe | Number of local protection errors |
|-----------------------|---------------------------------------|
|sq_num_lpe | Number of local protection errors |
|-----------------------|---------------------------------------|
|rq_num_wrfe | Number of CQEs with error |
|-----------------------|---------------------------------------|
|sq_num_wrfe | Number of CQEs with error |
|-----------------------|---------------------------------------|
|sq_num_mwbe | Number of Memory Window bind errors |
|-----------------------|---------------------------------------|
|sq_num_bre | Number of bad response errors |
|-----------------------|---------------------------------------|
|sq_num_rire | Number of Remote Invalid request |
| | errors |
|-----------------------|---------------------------------------|
|rq_num_rire | Number of Remote Invalid request |
| | errors |
|-----------------------|---------------------------------------|
|sq_num_rae | Number of remote access errors |
|-----------------------|---------------------------------------|
|rq_num_rae | Number of remote access errors |
|-----------------------|---------------------------------------|
|sq_num_roe | Number of remote operation errors |
|-----------------------|---------------------------------------|
|sq_num_tree | Number of transport retries exceeded |
| | errors |
|-----------------------|---------------------------------------|
|sq_num_rree | Number of RNR NAK retries exceeded |
| | errors |
|-----------------------|---------------------------------------|
|rq_num_rnr | Number of RNR NAKs sent |
|-----------------------|---------------------------------------|
|sq_num_rnr | Number of RNR NAKs received |
|-----------------------|---------------------------------------|
|rq_num_oos | Number of Out of Sequence requests |
| | received |
|-----------------------|---------------------------------------|
|sq_num_oos | Number of Out of Sequence NAKs |
| | received |
|-----------------------|---------------------------------------|
|rq_num_udsdprd | Number of UD packets silently |
| | discarded on the Receive Queue due to |
| | lack of receive descriptor |
|-----------------------|---------------------------------------|
|rq_num_dup | Number of duplicate requests received |
|-----------------------|---------------------------------------|
|sq_num_to | Number of time out received |
|-----------------------|---------------------------------------|
|num_cqovf | Number of CQ overflows |
|-----------------------|---------------------------------------|
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Add a function to query diagnostics counters from the firmware.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Add a bit that indicates if the firmware supports per port
diagnostic counters.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
While not an issue now, eventually we will have independent users of
the extable.h file and we will stop sourcing it via module.h header.
In testing that pending work, with very sparse builds, characteristic
of an "allnoconfig" on various architectures, we can sometimes hit an
instance where the very basic standard definitions aren't present,
resulting in:
include/linux/extable.h:26:9: error: 'NULL' undeclared (first use in this function)
To be clear, this isn't a regression, since currently extable.h is
only used by module.h -- however, we will need this addition present
before we start migrating exception table users off module.h and onto
extable.h during the next release cycle.
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Add ro_after_init support for modules by adding a new page-aligned section
in the module layout (after rodata) for ro_after_init data and enabling RO
protection for that section after module init runs.
Signed-off-by: Jessica Yu <jeyu@redhat.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
For historical reasons (i.e. pre-git) the exception table stuff was
buried in the middle of the module.h file. I noticed this while
doing an audit for needless includes of module.h and found core
kernel files (both arch specific and arch independent) were just
including module.h for this.
The converse is also true, in that conventional drivers, be they
for filesystems or actual hardware peripherals or similar, do not
normally care about the exception tables.
Here we fork the exception table content out of module.h into a
new file called extable.h -- and temporarily include it into the
module.h itself.
Then we will work our way across the arch independent and arch
specific files needing just exception table content, and move
them off module.h and onto extable.h
Once that is done, we can remove the extable.h from module.h
and in doing it like this, we avoid introducing build failures
into the git history.
The gain here is that module.h gets a bit smaller, across all
modular drivers that we build for allmodconfig. Also the core
files that only need exception table stuff don't have an include
of module.h that brings in lots of extra stuff and just looks
generally out of place.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
