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Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Currently, the only way to remove MFD children is with a call to
mfd_remove_devices, which will remove all the children. Under
some circumstances it is useful to remove only a subset of the
child devices. For example if some additional clean up is required
between removal of certain child devices.
To accomplish this a level field is added to mfd_cell, the normal
mfd_remove_devices is modified to not remove devices that are set
to a higher level and a corresponding mfd_remove_devices_late
function is added to remove those children.
See further discussion at:
https://lore.kernel.org/lkml/20200616075834.GF2608702@dell/
Suggested-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Drop the repeated word "in" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Drop the repeated word "that" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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This update adds new regmap tables to support the latest DA silicon
which will automatically be selected based on the chip and variant
information read from the device.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The current implementation performs checking in the i2c_probe()
function of the variant_code but does this immediately after the
containing struct has been initialised as all zero. This means the
check for variant code will always default to using the BB tables
and will never select AD. The variant code is subsequently set
by device_init() and later used by the RTC so really it's a little
fortunate this mismatch works.
This update adds raw I2C read access functionality to read the chip
and variant/revision information (common to all revisions) so that
it can subsequently correctly choose the proper regmap tables for
real initialisation.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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This MFD driver has no user. The keypad driver of this device never made
it into the kernel. Therefore, this driver is useless. Remove it.
Signed-off-by: Michael Walle <michael@walle.cc>
Cc: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Extend current list of helpers to provide support for parent drivers
wishing to match specific child devices to particular OF nodes.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Remove unnecessary '\'s and leading tabs.
This will help to clean-up future diffs when subsequent changes are
made.
Hint: The aforementioned changes follow this patch.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Currently, when a child platform device (sometimes referred to as a
sub-device) is registered via the Multi-Functional Device (MFD) API,
the framework attempts to match the newly registered platform device
with its associated Device Tree (OF) node. Until now, the device has
been allocated the first node found with an identical OF compatible
string. Unfortunately, if there are, say for example '3' devices
which are to be handled by the same driver and therefore have the same
compatible string, each of them will be allocated a pointer to the
*first* node.
An example Device Tree entry might look like this:
mfd_of_test {
compatible = "mfd,of-test-parent";
#address-cells = <0x02>;
#size-cells = <0x02>;
child@aaaaaaaaaaaaaaaa {
compatible = "mfd,of-test-child";
reg = <0xaaaaaaaa 0xaaaaaaaa 0 0x11>,
<0xbbbbbbbb 0xbbbbbbbb 0 0x22>;
};
child@cccccccc {
compatible = "mfd,of-test-child";
reg = <0x00000000 0xcccccccc 0 0x33>;
};
child@dddddddd00000000 {
compatible = "mfd,of-test-child";
reg = <0xdddddddd 0x00000000 0 0x44>;
};
};
When used with example sub-device registration like this:
static const struct mfd_cell mfd_of_test_cell[] = {
OF_MFD_CELL("mfd-of-test-child", NULL, NULL, 0, 0, "mfd,of-test-child"),
OF_MFD_CELL("mfd-of-test-child", NULL, NULL, 0, 1, "mfd,of-test-child"),
OF_MFD_CELL("mfd-of-test-child", NULL, NULL, 0, 2, "mfd,of-test-child")
};
... the current implementation will result in all devices being allocated
the first OF node found containing a matching compatible string:
[0.712511] mfd-of-test-child mfd-of-test-child.0: Probing platform device: 0
[0.712710] mfd-of-test-child mfd-of-test-child.0: Using OF node: child@aaaaaaaaaaaaaaaa
[0.713033] mfd-of-test-child mfd-of-test-child.1: Probing platform device: 1
[0.713381] mfd-of-test-child mfd-of-test-child.1: Using OF node: child@aaaaaaaaaaaaaaaa
[0.713691] mfd-of-test-child mfd-of-test-child.2: Probing platform device: 2
[0.713889] mfd-of-test-child mfd-of-test-child.2: Using OF node: child@aaaaaaaaaaaaaaaa
After this patch each device will be allocated a unique OF node:
[0.712511] mfd-of-test-child mfd-of-test-child.0: Probing platform device: 0
[0.712710] mfd-of-test-child mfd-of-test-child.0: Using OF node: child@aaaaaaaaaaaaaaaa
[0.713033] mfd-of-test-child mfd-of-test-child.1: Probing platform device: 1
[0.713381] mfd-of-test-child mfd-of-test-child.1: Using OF node: child@cccccccc
[0.713691] mfd-of-test-child mfd-of-test-child.2: Probing platform device: 2
[0.713889] mfd-of-test-child mfd-of-test-child.2: Using OF node: child@dddddddd00000000
Which is fine if all OF nodes are identical. However if we wish to
apply an attribute to particular device, we really need to ensure the
correct OF node will be associated with the device containing the
correct address. We accomplish this by matching the device's address
expressed in DT with one provided during sub-device registration.
Like this:
static const struct mfd_cell mfd_of_test_cell[] = {
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 1, "mfd,of-test-child", 0xdddddddd00000000),
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 2, "mfd,of-test-child", 0xaaaaaaaaaaaaaaaa),
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 3, "mfd,of-test-child", 0x00000000cccccccc)
};
This will ensure a specific device (designated here using the
platform_ids; 1, 2 and 3) is matched with a particular OF node:
[0.712511] mfd-of-test-child mfd-of-test-child.0: Probing platform device: 0
[0.712710] mfd-of-test-child mfd-of-test-child.0: Using OF node: child@dddddddd00000000
[0.713033] mfd-of-test-child mfd-of-test-child.1: Probing platform device: 1
[0.713381] mfd-of-test-child mfd-of-test-child.1: Using OF node: child@aaaaaaaaaaaaaaaa
[0.713691] mfd-of-test-child mfd-of-test-child.2: Probing platform device: 2
[0.713889] mfd-of-test-child mfd-of-test-child.2: Using OF node: child@cccccccc
This implementation is still not infallible, hence the mention of
"best effort" in the commit subject. Since we have not *insisted* on
the existence of 'reg' properties (in some scenarios they just do not
make sense) and no device currently uses the new 'of_reg' attribute,
we have to make an on-the-fly judgement call whether to associate the
OF node anyway. Which we do in cases where parent drivers haven't
specified a particular OF node to match to. So there is a *slight*
possibility of the following result (note: the implementation here is
convoluted, but it shows you one means by which this process can
still break):
/*
* First entry will match to the first OF node with matching compatible
* Second will fail, since the first took its OF node and is no longer available
* Third will succeed
*/
static const struct mfd_cell mfd_of_test_cell[] = {
OF_MFD_CELL("mfd-of-test-child", NULL, NULL, 0, 1, "mfd,of-test-child"),
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 2, "mfd,of-test-child", 0xaaaaaaaaaaaaaaaa),
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 3, "mfd,of-test-child", 0x00000000cccccccc)
};
The result:
[0.753869] mfd-of-test-parent mfd_of_test: Registering 3 devices
[0.756597] mfd-of-test-child: Failed to locate of_node [id: 2]
[0.759999] mfd-of-test-child mfd-of-test-child.1: Probing platform device: 1
[0.760314] mfd-of-test-child mfd-of-test-child.1: Using OF node: child@aaaaaaaaaaaaaaaa
[0.760908] mfd-of-test-child mfd-of-test-child.2: Probing platform device: 2
[0.761183] mfd-of-test-child mfd-of-test-child.2: No OF node associated with this device
[0.761621] mfd-of-test-child mfd-of-test-child.3: Probing platform device: 3
[0.761899] mfd-of-test-child mfd-of-test-child.3: Using OF node: child@cccccccc
We could code around this with some pre-parsing semantics, but the
added complexity required to cover each and every corner-case is not
justified. Merely patching the current failing (via this patch) is
already working with some pretty small corner-cases. Other issues
should be patched in the parent drivers which can be achieved simply
by implementing OF_MFD_CELL_REG().
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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nf_ct_frag6_gather is part of nf_defrag_ipv6.ko, not ipv6 core.
The current use of the netfilter ipv6 stub indirections causes a module
dependency between ipv6 and nf_defrag_ipv6.
This prevents nf_defrag_ipv6 module from being removed because ipv6 can't
be unloaded.
Remove the indirection and always use a direct call. This creates a
depency from nf_conntrack_bridge to nf_defrag_ipv6 instead:
modinfo nf_conntrack
depends: nf_conntrack,nf_defrag_ipv6,bridge
.. and nf_conntrack already depends on nf_defrag_ipv6 anyway.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Not much this cycle - mostly non urgent driver fixes:
- ds1374: use watchdog core
- pcf2127: add alarm and pcf2129 support"
* tag 'rtc-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: pcf2127: fix alarm handling
rtc: pcf2127: add alarm support
rtc: pcf2127: add pca2129 device id
rtc: max77686: Fix wake-ups for max77620
rtc: ds1307: provide an indication that the watchdog has fired
rtc: ds1374: remove unused define
rtc: ds1374: fix RTC_DRV_DS1374_WDT dependencies
rtc: cleanup obsolete comment about struct rtc_class_ops
rtc: pl031: fix set_alarm by adding back call to alarm_irq_enable
rtc: ds1374: wdt: Use watchdog core for watchdog part
rtc: Replace HTTP links with HTTPS ones
rtc: goldfish: Enable interrupt in set_alarm() when necessary
rtc: max77686: Do not allow interrupt to fire before system resume
rtc: imxdi: fix trivial typos
rtc: cpcap: fix range
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Pull ceph updates from Ilya Dryomov:
"Xiubo has completed his work on filesystem client metrics, they are
sent to all available MDSes once per second now.
Other than that, we have a lot of fixes and cleanups all around the
filesystem, including a tweak to cut down on MDS request resends in
multi-MDS setups from Yanhu and fixups for SELinux symlink labeling
and MClientSession message decoding from Jeff"
* tag 'ceph-for-5.9-rc1' of git://github.com/ceph/ceph-client: (22 commits)
ceph: handle zero-length feature mask in session messages
ceph: use frag's MDS in either mode
ceph: move sb->wb_pagevec_pool to be a global mempool
ceph: set sec_context xattr on symlink creation
ceph: remove redundant initialization of variable mds
ceph: fix use-after-free for fsc->mdsc
ceph: remove unused variables in ceph_mdsmap_decode()
ceph: delete repeated words in fs/ceph/
ceph: send client provided metric flags in client metadata
ceph: periodically send perf metrics to MDSes
ceph: check the sesion state and return false in case it is closed
libceph: replace HTTP links with HTTPS ones
ceph: remove unnecessary cast in kfree()
libceph: just have osd_req_op_init() return a pointer
ceph: do not access the kiocb after aio requests
ceph: clean up and optimize ceph_check_delayed_caps()
ceph: fix potential mdsc use-after-free crash
ceph: switch to WARN_ON_ONCE in encode_supported_features()
ceph: add global total_caps to count the mdsc's total caps number
ceph: add check_session_state() helper and make it global
...
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull more parisc updates from Helge Deller:
- Oscar Carter contributed a patch which fixes parisc's usage of
dereference_function_descriptor() and thus will allow using the
-Wcast-function-type compiler option in the top-level Makefile
- Sven Schnelle fixed a bug in the SBA code to prevent crashes during
kexec
- John David Anglin provided implementations for __smp_store_release()
and __smp_load_acquire barriers() which avoids using the sync
assembler instruction and thus speeds up barrier paths
- Some whitespace cleanups in parisc's atomic.h header file
* 'parisc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Implement __smp_store_release and __smp_load_acquire barriers
parisc: mask out enable and reserved bits from sba imask
parisc: Whitespace cleanups in atomic.h
parisc/kernel/ftrace: Remove function callback casts
sections.h: dereference_function_descriptor() returns void pointer
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Pull more KVM updates from Paolo Bonzini:
"PPC:
- Improvements and bugfixes for secure VM support, giving reduced
startup time and memory hotplug support.
- Locking fixes in nested KVM code
- Increase number of guests supported by HV KVM to 4094
- Preliminary POWER10 support
ARM:
- Split the VHE and nVHE hypervisor code bases, build the EL2 code
separately, allowing for the VHE code to now be built with
instrumentation
- Level-based TLB invalidation support
- Restructure of the vcpu register storage to accomodate the NV code
- Pointer Authentication available for guests on nVHE hosts
- Simplification of the system register table parsing
- MMU cleanups and fixes
- A number of post-32bit cleanups and other fixes
MIPS:
- compilation fixes
x86:
- bugfixes
- support for the SERIALIZE instruction"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (70 commits)
KVM: MIPS/VZ: Fix build error caused by 'kvm_run' cleanup
x86/kvm/hyper-v: Synic default SCONTROL MSR needs to be enabled
MIPS: KVM: Convert a fallthrough comment to fallthrough
MIPS: VZ: Only include loongson_regs.h for CPU_LOONGSON64
x86: Expose SERIALIZE for supported cpuid
KVM: x86: Don't attempt to load PDPTRs when 64-bit mode is enabled
KVM: arm64: Move S1PTW S2 fault logic out of io_mem_abort()
KVM: arm64: Don't skip cache maintenance for read-only memslots
KVM: arm64: Handle data and instruction external aborts the same way
KVM: arm64: Rename kvm_vcpu_dabt_isextabt()
KVM: arm: Add trace name for ARM_NISV
KVM: arm64: Ensure that all nVHE hyp code is in .hyp.text
KVM: arm64: Substitute RANDOMIZE_BASE for HARDEN_EL2_VECTORS
KVM: arm64: Make nVHE ASLR conditional on RANDOMIZE_BASE
KVM: PPC: Book3S HV: Rework secure mem slot dropping
KVM: PPC: Book3S HV: Move kvmppc_svm_page_out up
KVM: PPC: Book3S HV: Migrate hot plugged memory
KVM: PPC: Book3S HV: In H_SVM_INIT_DONE, migrate remaining normal-GFNs to secure-GFNs
KVM: PPC: Book3S HV: Track the state GFNs associated with secure VMs
KVM: PPC: Book3S HV: Disable page merging in H_SVM_INIT_START
...
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull more clk updates from Stephen Boyd:
"Here's some more updates that missed the last pull request because I
happened to tag the tree at an earlier point in the history of
clk-next. I must have fat fingered it and checked out an older version
of clk-next on this second computer I'm using.
This time it actually includes more code for Qualcomm SoCs, the AT91
major updates, and some Rockchip SoC clk driver updates as well. I've
corrected this flow so this shouldn't happen again"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (83 commits)
clk: bcm2835: Do not use prediv with bcm2711's PLLs
clk: drop unused function __clk_get_flags
clk: hsdk: Fix bad dependency on IOMEM
dt-bindings: clock: Fix YAML schemas for LPASS clocks on SC7180
clk: mmp: avoid missing prototype warning
clk: sparx5: Add Sparx5 SoC DPLL clock driver
dt-bindings: clock: sparx5: Add bindings include file
clk: qoriq: add LS1021A core pll mux options
clk: clk-atlas6: fix return value check in atlas6_clk_init()
clk: tegra: pll: Improve PLLM enable-state detection
clk: X1000: Add support for calculat REFCLK of USB PHY.
clk: JZ4780: Reformat the code to align it.
clk: JZ4780: Add functions for enable and disable USB PHY.
clk: Ingenic: Add RTC related clocks for Ingenic SoCs.
dt-bindings: clock: Add tabs to align code.
dt-bindings: clock: Add RTC related clocks for Ingenic SoCs.
clk: davinci: Use fallthrough pseudo-keyword
clk: imx: Use fallthrough pseudo-keyword
clk: qcom: gcc-sdm660: Fix up gcc_mss_mnoc_bimc_axi_clk
clk: qcom: gcc-sdm660: Add missing modem reset
...
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git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
- f71808e_wdt imporvements
- dw_wdt improvements
- mlx-wdt: support new watchdog type with longer timeout period
- fallthrough pseudo-keyword replacements
- overall small fixes and improvements
* tag 'linux-watchdog-5.9-rc1' of git://www.linux-watchdog.org/linux-watchdog: (35 commits)
watchdog: rti-wdt: balance pm runtime enable calls
watchdog: rti-wdt: attach to running watchdog during probe
watchdog: add support for adjusting last known HW keepalive time
watchdog: use __watchdog_ping in startup
watchdog: softdog: Add options 'soft_reboot_cmd' and 'soft_active_on_boot'
watchdog: pcwd_usb: remove needless check before usb_free_coherent()
watchdog: Replace HTTP links with HTTPS ones
dt-bindings: watchdog: renesas,wdt: Document r8a774e1 support
watchdog: initialize device before misc_register
watchdog: booke_wdt: Add common nowayout parameter driver
watchdog: scx200_wdt: Use fallthrough pseudo-keyword
watchdog: Use fallthrough pseudo-keyword
watchdog: f71808e_wdt: do stricter parameter validation
watchdog: f71808e_wdt: clear watchdog timeout occurred flag
watchdog: f71808e_wdt: remove use of wrong watchdog_info option
watchdog: f71808e_wdt: indicate WDIOF_CARDRESET support in watchdog_info.options
docs: watchdog: codify ident.options as superset of possible status flags
dt-bindings: watchdog: Add compatible for QCS404, SC7180, SDM845, SM8150
dt-bindings: watchdog: Convert QCOM watchdog timer bindings to YAML
watchdog: dw_wdt: Add DebugFS files
...
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Pull VFIO updates from Alex Williamson:
- Inclusive naming updates (Alex Williamson)
- Intel X550 INTx quirk (Alex Williamson)
- Error path resched between unmaps (Xiang Zheng)
- SPAPR IOMMU pin_user_pages() conversion (John Hubbard)
- Trivial mutex simplification (Alex Williamson)
- QAT device denylist (Giovanni Cabiddu)
- type1 IOMMU ioctl refactor (Liu Yi L)
* tag 'vfio-v5.9-rc1' of git://github.com/awilliam/linux-vfio:
vfio/type1: Refactor vfio_iommu_type1_ioctl()
vfio/pci: Add QAT devices to denylist
vfio/pci: Add device denylist
PCI: Add Intel QuickAssist device IDs
vfio/pci: Hold igate across releasing eventfd contexts
vfio/spapr_tce: convert get_user_pages() --> pin_user_pages()
vfio/type1: Add conditional rescheduling after iommu map failed
vfio/pci: Add Intel X550 to hidden INTx devices
vfio: Cleanup allowed driver naming
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Pull drm fixes from Dave Airlie:
"This has a few vmwgfx regression fixes we hit from the merge window
(one in TTM), it also has a bunch of amdgpu fixes along with a
scattering everywhere else.
core:
- Fix drm_dp_mst_port refcount leaks in drm_dp_mst_allocate_vcpi
- Remove null check for kfree in drm_dev_release.
- Fix DRM_FORMAT_MOD_AMLOGIC_FBC definition.
- re-added docs for drm_gem_flink_ioctl()
- add orientation quirk for ASUS T103HAF
ttm:
- ttm: fix page-offset calculation within TTM
- revert patch causing vmwgfx regressions
fbcon:
- Fix a fbcon OOB read in fbdev, found by syzbot.
vga:
- Mark vga_tryget static as it's not used elsewhere.
amdgpu:
- Re-add spelling typo fix
- Sienna Cichlid fixes
- Navy Flounder fixes
- DC fixes
- SMU i2c fix
- Power fixes
vmwgfx:
- regression fixes for modesetting crashes
- misc fixes
xlnx:
- Small fixes to xlnx.
omap:
- Fix mode initialization in omap_connector_mode_valid().
- force runtime PM suspend on system suspend
tidss:
- fix modeset init for DPI panels"
* tag 'drm-next-2020-08-12' of git://anongit.freedesktop.org/drm/drm: (70 commits)
drm/ttm: revert "drm/ttm: make TT creation purely optional v3"
drm/vmwgfx: fix spelling mistake "Cant" -> "Can't"
drm/vmwgfx: fix spelling mistake "Cound" -> "Could"
drm/vmwgfx/ldu: Use drm_mode_config_reset
drm/vmwgfx/sou: Use drm_mode_config_reset
drm/vmwgfx/stdu: Use drm_mode_config_reset
drm/vmwgfx: Fix two list_for_each loop exit tests
drm/vmwgfx: Use correct vmw_legacy_display_unit pointer
drm/vmwgfx: Use struct_size() helper
drm/amdgpu: Fix bug where DPM is not enabled after hibernate and resume
drm/amd/powerplay: put VCN/JPEG into PG ungate state before dpm table setup(V3)
drm/amd/powerplay: update swSMU VCN/JPEG PG logics
drm/amdgpu: use mode1 reset by default for sienna_cichlid
drm/amdgpu/smu: rework i2c adpater registration
drm/amd/display: Display goes blank after inst
drm/amd/display: Change null plane state swizzle mode to 4kb_s
drm/amd/display: Use helper function to check for HDMI signal
drm/amd/display: AMD OUI (DPCD 0x00300) skipped on some sink
drm/amd/display: Fix logger context
drm/amd/display: populate new dml variable
...
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Merge more updates from Andrew Morton:
- most of the rest of MM (memcg, hugetlb, vmscan, proc, compaction,
mempolicy, oom-kill, hugetlbfs, migration, thp, cma, util,
memory-hotplug, cleanups, uaccess, migration, gup, pagemap),
- various other subsystems (alpha, misc, sparse, bitmap, lib, bitops,
checkpatch, autofs, minix, nilfs, ufs, fat, signals, kmod, coredump,
exec, kdump, rapidio, panic, kcov, kgdb, ipc).
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (164 commits)
mm/gup: remove task_struct pointer for all gup code
mm: clean up the last pieces of page fault accountings
mm/xtensa: use general page fault accounting
mm/x86: use general page fault accounting
mm/sparc64: use general page fault accounting
mm/sparc32: use general page fault accounting
mm/sh: use general page fault accounting
mm/s390: use general page fault accounting
mm/riscv: use general page fault accounting
mm/powerpc: use general page fault accounting
mm/parisc: use general page fault accounting
mm/openrisc: use general page fault accounting
mm/nios2: use general page fault accounting
mm/nds32: use general page fault accounting
mm/mips: use general page fault accounting
mm/microblaze: use general page fault accounting
mm/m68k: use general page fault accounting
mm/ia64: use general page fault accounting
mm/hexagon: use general page fault accounting
mm/csky: use general page fault accounting
...
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After the cleanup of page fault accounting, gup does not need to pass
task_struct around any more. Remove that parameter in the whole gup
stack.
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Link: http://lkml.kernel.org/r/20200707225021.200906-26-peterx@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Patch series "mm: Page fault accounting cleanups", v5.
This is v5 of the pf accounting cleanup series. It originates from Gerald
Schaefer's report on an issue a week ago regarding to incorrect page fault
accountings for retried page fault after commit 4064b9827063 ("mm: allow
VM_FAULT_RETRY for multiple times"):
https://lore.kernel.org/lkml/20200610174811.44b94525@thinkpad/
What this series did:
- Correct page fault accounting: we do accounting for a page fault
(no matter whether it's from #PF handling, or gup, or anything else)
only with the one that completed the fault. For example, page fault
retries should not be counted in page fault counters. Same to the
perf events.
- Unify definition of PERF_COUNT_SW_PAGE_FAULTS: currently this perf
event is used in an adhoc way across different archs.
Case (1): for many archs it's done at the entry of a page fault
handler, so that it will also cover e.g. errornous faults.
Case (2): for some other archs, it is only accounted when the page
fault is resolved successfully.
Case (3): there're still quite some archs that have not enabled
this perf event.
Since this series will touch merely all the archs, we unify this
perf event to always follow case (1), which is the one that makes most
sense. And since we moved the accounting into handle_mm_fault, the
other two MAJ/MIN perf events are well taken care of naturally.
- Unify definition of "major faults": the definition of "major
fault" is slightly changed when used in accounting (not
VM_FAULT_MAJOR). More information in patch 1.
- Always account the page fault onto the one that triggered the page
fault. This does not matter much for #PF handlings, but mostly for
gup. More information on this in patch 25.
Patchset layout:
Patch 1: Introduced the accounting in handle_mm_fault(), not enabled.
Patch 2-23: Enable the new accounting for arch #PF handlers one by one.
Patch 24: Enable the new accounting for the rest outliers (gup, iommu, etc.)
Patch 25: Cleanup GUP task_struct pointer since it's not needed any more
This patch (of 25):
This is a preparation patch to move page fault accountings into the
general code in handle_mm_fault(). This includes both the per task
flt_maj/flt_min counters, and the major/minor page fault perf events. To
do this, the pt_regs pointer is passed into handle_mm_fault().
PERF_COUNT_SW_PAGE_FAULTS should still be kept in per-arch page fault
handlers.
So far, all the pt_regs pointer that passed into handle_mm_fault() is
NULL, which means this patch should have no intented functional change.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200707225021.200906-1-peterx@redhat.com
Link: http://lkml.kernel.org/r/20200707225021.200906-2-peterx@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_non_cma_page() in gup.c requires to allocate the new page that is not
on the CMA area. new_non_cma_page() implements it by using allocation
scope APIs.
However, there is a work-around for hugetlb. Normal hugetlb page
allocation API for migration is alloc_huge_page_nodemask(). It consists
of two steps. First is dequeing from the pool. Second is, if there is no
available page on the queue, allocating by using the page allocator.
new_non_cma_page() can't use this API since first step (deque) isn't aware
of scope API to exclude CMA area. So, new_non_cma_page() exports hugetlb
internal function for the second step, alloc_migrate_huge_page(), to
global scope and uses it directly. This is suboptimal since hugetlb pages
on the queue cannot be utilized.
This patch tries to fix this situation by making the deque function on
hugetlb CMA aware. In the deque function, CMA memory is skipped if
PF_MEMALLOC_NOCMA flag is found.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Roman Gushchin <guro@fb.com>
Link: http://lkml.kernel.org/r/1596180906-8442-2-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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We have well defined scope API to exclude CMA region. Use it rather than
manipulating gfp_mask manually. With this change, we can now restore
__GFP_MOVABLE for gfp_mask like as usual migration target allocation. It
would result in that the ZONE_MOVABLE is also searched by page allocator.
For hugetlb, gfp_mask is redefined since it has a regular allocation mask
filter for migration target. __GPF_NOWARN is added to hugetlb gfp_mask
filter since a new user for gfp_mask filter, gup, want to be silent when
allocation fails.
Note that this can be considered as a fix for the commit 9a4e9f3b2d73
("mm: update get_user_pages_longterm to migrate pages allocated from CMA
region"). However, "Fixes" tag isn't added here since it is just
suboptimal but it doesn't cause any problem.
Suggested-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Link: http://lkml.kernel.org/r/1596180906-8442-1-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There are some similar functions for migration target allocation. Since
there is no fundamental difference, it's better to keep just one rather
than keeping all variants. This patch implements base migration target
allocation function. In the following patches, variants will be converted
to use this function.
Changes should be mechanical, but, unfortunately, there are some
differences. First, some callers' nodemask is assgined to NULL since NULL
nodemask will be considered as all available nodes, that is,
&node_states[N_MEMORY]. Second, for hugetlb page allocation, gfp_mask is
redefined as regular hugetlb allocation gfp_mask plus __GFP_THISNODE if
user provided gfp_mask has it. This is because future caller of this
function requires to set this node constaint. Lastly, if provided nodeid
is NUMA_NO_NODE, nodeid is set up to the node where migration source
lives. It helps to remove simple wrappers for setting up the nodeid.
Note that PageHighmem() call in previous function is changed to open-code
"is_highmem_idx()" since it provides more readability.
[akpm@linux-foundation.org: tweak patch title, per Vlastimil]
[akpm@linux-foundation.org: fix typo in comment]
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Roman Gushchin <guro@fb.com>
Link: http://lkml.kernel.org/r/1594622517-20681-6-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There is no difference between two migration callback functions,
alloc_huge_page_node() and alloc_huge_page_nodemask(), except
__GFP_THISNODE handling. It's redundant to have two almost similar
functions in order to handle this flag. So, this patch tries to remove
one by introducing a new argument, gfp_mask, to
alloc_huge_page_nodemask().
After introducing gfp_mask argument, it's caller's job to provide correct
gfp_mask. So, every callsites for alloc_huge_page_nodemask() are changed
to provide gfp_mask.
Note that it's safe to remove a node id check in alloc_huge_page_node()
since there is no caller passing NUMA_NO_NODE as a node id.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Roman Gushchin <guro@fb.com>
Link: http://lkml.kernel.org/r/1594622517-20681-4-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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It's not performance sensitive function. Move it to .c. This is a
preparation step for future change.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Roman Gushchin <guro@fb.com>
Link: http://lkml.kernel.org/r/1594622517-20681-3-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Since print_oops_end_marker() is not used externally, also remove it in
kernel.h at the same time.
Signed-off-by: Yue Hu <huyue2@yulong.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/20200724011516.12756-1-zbestahu@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The return value of oops_may_print() is true or false, so change its type
to reflect that.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Xuefeng Li <lixuefeng@loongson.cn>
Link: http://lkml.kernel.org/r/1591103358-32087-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Make kernel GNU build-id available in VMCOREINFO. Having build-id in
VMCOREINFO facilitates presenting appropriate kernel namelist image with
debug information file to kernel crash dump analysis tools. Currently
VMCOREINFO lacks uniquely identifiable key for crash analysis automation.
Regarding if this patch is necessary or matching of linux_banner and
OSRELEASE in VMCOREINFO employed by crash(8) meets the need -- IMO,
build-id approach more foolproof, in most instances it is a cryptographic
hash generated using internal code/ELF bits unlike kernel version string
upon which linux_banner is based that is external to the code. I feel
each is intended for a different purpose. Also OSRELEASE is not suitable
when two different kernel builds from same version with different features
enabled.
Currently for most linux (and non-linux) systems build-id can be extracted
using standard methods for file types such as user mode crash dumps,
shared libraries, loadable kernel modules etc., This is an exception for
linux kernel dump. Having build-id in VMCOREINFO brings some uniformity
for automation tools.
Tyler said:
: I think this is a nice improvement over today's linux_banner approach for
: correlating vmlinux to a kernel dump.
:
: The elf notes parsing in this patch lines up with what is described in in
: the "Notes (Nhdr)" section of the elf(5) man page.
:
: BUILD_ID_MAX is sufficient to hold a sha1 build-id, which is the default
: build-id type today in GNU ld(2). It is also sufficient to hold the
: "fast" build-id, which is the default build-id type today in LLVM lld(2).
Signed-off-by: Vijay Balakrishna <vijayb@linux.microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Link: http://lkml.kernel.org/r/1591849672-34104-1-git-send-email-vijayb@linux.microsoft.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Change doubled word "is" to "it is".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Ian Kent <raven@themaw.net>
Link: http://lkml.kernel.org/r/5a82befd-40f8-8dc0-3498-cbc0436cad9b@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The documentation of the kstrto*() functions describes kstrto*() as
"replacements" of the "obsolete" simple_strto*() functions. Both of these
terms are inaccurate: they're not replacements because they have different
behaviour, and the simple_strto*() are not obsolete because there are
cases where they have benefits over kstrto*().
Remove usage of the terms "replacement" and "obsolete" in reference to
simple_strto*(), and instead use the term "preferred over".
Fixes: 4c925d6031f71 ("kstrto*: add documentation")
Fixes: 885e68e8b7b13 ("kernel.h: update comment about simple_strto<foo>() functions")
Signed-off-by: Kars Mulder <kerneldev@karsmulder.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Eldad Zack <eldad@fogrefinery.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Mans Rullgard <mans@mansr.com>
Cc: Petr Mladek <pmladek@suse.com>
Link: http://lkml.kernel.org/r/29b9-5f234c80-13-4e3aa200@244003027
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The documentation of the kstrto*() functions reference the simple_strtoull
function by "used as a replacement for [the obsolete] simple_strtoull".
All these functions describes themselves as replacements for the function
simple_strtoull, even though a function like kstrtol() would be more aptly
described as a replacement of simple_strtol().
Fix these references by making the documentation of kstrto*() reference
the closest simple_strto*() equivalent available. The functions
kstrto[u]int() do not have direct simple_strto[u]int() equivalences, so
these are made to refer to simple_strto[u]l() instead.
Furthermore, add parentheses after function names, as is standard in
kernel documentation.
Fixes: 4c925d6031f71 ("kstrto*: add documentation")
Signed-off-by: Kars Mulder <kerneldev@karsmulder.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Eldad Zack <eldad@fogrefinery.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Mans Rullgard <mans@mansr.com>
Cc: Petr Mladek <pmladek@suse.com>
Link: http://lkml.kernel.org/r/1ee1-5f234c00-f3-165a6440@234394593
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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struct __genradix is defined as having its member 'root'
annotated as __rcu. But in the corresponding API RCU is not used.
Sparse reports this type mismatch as:
lib/generic-radix-tree.c:56:35: warning: incorrect type in initializer (different address spaces)
lib/generic-radix-tree.c:56:35: expected struct genradix_root *r
lib/generic-radix-tree.c:56:35: got struct genradix_root [noderef] <asn:4> *__val
with 6 other ones.
So, correct root's type by removing this unneeded __rcu.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Link: http://lkml.kernel.org/r/20200621161745.55396-1-luc.vanoostenryck@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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By popular demand, reorder the defines for sparse annotations and group
them by functionality.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: lore.kernel.org/r/CAMuHMdWQsirja-h3wBcZezk+H2Q_HShhAks8Hc8ps5fTAp=ObQ@mail.gmail.com
Link: http://lkml.kernel.org/r/20200621143652.53798-1-luc.vanoostenryck@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When the definition was changed, the comment became stale. Just remove
it since there isn't anything useful to say here.
Fixes: b8a0255db958 ("include/linux/poison.h: use POISON_POINTER_DELTA for poison pointers")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vasily Kulikov <segoon@openwall.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20200730174108.GJ23808@casper.infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/20200726110117.16346-1-grandmaster@al2klimov.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This seems to have been added inadvertently in commit
72deb455b5ec ("block: remove CONFIG_LBDAF")
Fixes: 72deb455b5ec ("block: remove CONFIG_LBDAF")
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20200727034852.2813453-1-nivedita@alum.mit.edu
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add a helper that waits for a pid and stores the status in the passed in
kernel pointer. Use it to fix the usage of kernel_wait4 in
call_usermodehelper_exec_sync that only happens to work due to the
implicit set_fs(KERNEL_DS) for kernel threads.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Link: http://lkml.kernel.org/r/20200721130449.5008-1-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Drop the doubled word "than" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Lasse Collin <lasse.collin@tukaani.org>
Link: http://lkml.kernel.org/r/05ebba7a-c1e4-01ae-fc7b-15c081b33f3e@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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|
Drop the doubled word "the" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Link: http://lkml.kernel.org/r/e85802f7-8f48-8b4c-29b3-ea237a2c7ae9@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Drop the doubled word "a" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Link: http://lkml.kernel.org/r/c61b707a-8fd8-5b1b-aab0-679122881543@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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