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Like it's already done in one place in the driver, convert the rest to use pr_*
macros instead of printk(KERN_LEVEL) calls.
While here, join strings to be one string for one line to make grep on them
easier.
There is no functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: http://lkml.kernel.org/r/1451310085-113182-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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ioremapping multiple BARs produces a warning with a message "Your kernel is
fine". This message mostly serves to comfort kernel developers. Users do
not read the message, they only see the big scary warning which means
something must be horribly broken with their system. Less dramatically, the
warn also sets the taint flag which makes it difficult to differentiate
problems. If the kernel is actually fine as the warning claims it doesn't
make sense for it to be tainted. Change the WARN_ONCE to a pr_warn with the
caller of the ioremap.
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Link: http://lkml.kernel.org/r/1450728074-31029-1-git-send-email-labbott@fedoraproject.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This was meant to print base address and entry count; make it do so
again.
Fixes: 37868fe113ff "x86/ldt: Make modify_ldt synchronous"
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: http://lkml.kernel.org/r/56797D8402000078000C24F0@prv-mh.provo.novell.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Some OMAP interrupt controllers use generic level detection, so
handle_level_irq() is used as the chip type handler.
Allocated IRQ chip type handler doesn't need to set it again because
irq_alloc_domain_generic_chips() has already registered it.
Tested with BeagleBoneBlack Rev C.
Signed-off-by: Milo Kim <milo.kim@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-omap@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1450687994-12580-1-git-send-email-milo.kim@ti.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This commit adds support for the TS-4800 interrupt controller. This
controller is instantiated in a companion FPGA, and multiplex interrupts
for other FPGA IPs.
As this component is external to the SoC, the SoC might need to reserve
pins, so this controller is implemented as a platform driver and doesn't
use the IRQCHIP_DECLARE construct.
Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: kernel@savoirfairelinux.com
Link: http://lkml.kernel.org/r/1450728683-31416-2-git-send-email-damien.riegel@savoirfairelinux.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This is an interrupt-controller implemented in an FPGA, to multiplex
interrupts generated from other IPs. The FPGA usually uses a GPIO as a
parent interrupt controller to notify that one of the multiplexed
interrupts has triggered.
Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: kernel@savoirfairelinux.com
Link: http://lkml.kernel.org/r/1450728683-31416-1-git-send-email-damien.riegel@savoirfairelinux.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The current MSI framework can only support 256 platform MSIs. But on Hisilicon
platform, some network related devices has about 500 wired interrupts.
To support these devices and align with MSI-X increase the maximum to 2048
devices.
Signed-off-by: Ma Jun <majun258@huawei.com>
Cc: <Catalin.Marinas@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: <Will.Deacon@arm.com>
Cc: <mark.rutland@arm.com>
Cc: <marc.zyngier@arm.com>
Cc: <jason@lakedaemon.net>
Cc: <lizefan@huawei.com>
Cc: <huxinwei@huawei.com>
Cc: <dingtianhong@huawei.com>
Cc: <liguozhu@hisilicon.com>
Cc: <guohanjun@huawei.com>
Link: http://lkml.kernel.org/r/1450752442-9392-1-git-send-email-majun258@huawei.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This patch contain fixes for v2m resources and SPI ranges:
* Fix off-by-one error when set up v2m resource end range in
gicv2m_acpi_init().
* Fix the off-by-one print error for SPI range.
* Use %pR to properly print resource range information.
Both ACPI and DT should now print:
GICv2m: range[mem 0xe1180000-0xe1180fff], SPI[64:319]
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <Catalin.Marinas@arm.com>
Cc: <hanjun.guo@linaro.org>
Cc: <tomasz.nowicki@linaro.org>
Cc: <graeme.gregory@linaro.org>
Cc: <dhdang@apm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: <marc.zyngier@arm.com>
Cc: <jason@lakedaemon.net>
Cc: <rjw@rjwysocki.net>
Link: http://lkml.kernel.org/r/1450830263-28914-1-git-send-email-Suravee.Suthikulpanit@amd.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Avoid using hardcoded magics. We have a #define for this number.
No functional changes.
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-rpi-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1451166444-11044-5-git-send-email-eric@anholt.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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On my RPi2 I got a lot of:
unexpected IRQ trap at vector 00
This happens because bcm2836_arm_irqchip_handle_irq() is sometimes
invoked even if the ISR is clear, and this case is not handled.
This patch explicitly handle this case, fixing the kernel complaints
about the bad IRQ lookup.
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-rpi-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1451166444-11044-4-git-send-email-eric@anholt.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The firmware sets the secondaries spinning waiting for a non-NULL
value to show up in the last IPI mailbox.
The original SMP port from the downstream tree was done by Andrea, and
Eric cleaned it up/rewrote it a few times from there.
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-rpi-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1451166444-11044-3-git-send-email-eric@anholt.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The irqchip's register area includes the the setup for the timer's
scaling factors, and for the platform we want a fixed configuration of
these registers.
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-rpi-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1451166444-11044-2-git-send-email-eric@anholt.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The related warning from gcc 6.0:
arch/x86/kernel/ptrace.c:127:18: warning: ‘arg_offs_table’ defined but not used [-Wunused-const-variable]
static const int arg_offs_table[] = {
^~~~~~~~~~~~~~
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Link: http://lkml.kernel.org/r/1451137798-28701-1-git-send-email-chengang@emindsoft.com.cn
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The posix_clock_poll function is supposed to return a bit mask of
POLLxxx values. However, in case the hardware has disappeared (due to
hot plugging for example) this code returns -ENODEV in a futile
attempt to throw an error at the file descriptor level. The kernel's
file_operations interface does not accept such error codes from the
poll method. Instead, this function aught to return POLLERR.
The value -ENODEV does, in fact, contain the POLLERR bit (and almost
all the other POLLxxx bits as well), but only by chance. This patch
fixes code to return a proper bit mask.
Credit goes to Markus Elfring for pointing out the suspicious
signed/unsigned mismatch.
Reported-by: Markus Elfring <elfring@users.sourceforge.net>
igned-off-by: Richard Cochran <richardcochran@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Link: http://lkml.kernel.org/r/1450819198-17420-1-git-send-email-richardcochran@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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into irq/core
Pull irqchip core changes for v4.5 from Jason Cooper:
- renesas-intc-irqpin: Remove platform code, improve clock handling
- sunxi-nmi: Extend NMI support to include A80
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull another round of GIC changes from Marc:
ACPI support for GIV-v2m
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Then users can remap the keycode from userspace. If without the remap,
the input device will pass KEY_MICMUTE to userspace, but in X11 layer,
it uses KEY_F20 rather than KEY_MICMUTE for XF86AudioMicMute. After
adding the keycode map, users can remap the keycode to any value users
want.
Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The Lenovo ThinkCenter AIO uses Line2 (NID 0x1b) to implement the
micmute hotkey, here we register an input device and use Line2 unsol
event to collect the hotkey pressing or releasing.
In the meanwhile, the micmute led is controlled by GPIO2, so we
use an existing function alc_fixup_gpio_mic_mute_hook() to control
the led.
[Hui: And there are two places to register the input device, to make
the code simple and clean, move the two same code sections into a
function.]
Cc: <stable@vger.kernel.org>
Signed-off-by: Kailang <kailang@realtek.com>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Add a driver which supports :
- UPort 1110 : 1 port RS-232 USB to Serial Hub.
- UPort 1130 : 1 port RS-422/485 USB to Serial Hub.
- UPort 1130I : 1 port RS-422/485 USB to Serial Hub with Isolation.
- UPort 1150 : 1 port RS-232/422/485 USB to Serial Hub.
- UPort 1150I : 1 port RS-232/422/485 USB to Serial Hub with Isolation.
This driver is based on GPL MOXA driver written by Hen Huang and available
on MOXA website. The original driver was based on io_ti serial driver.
Signed-off-by: Mathieu OTHACEHE <m.othacehe@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"Three late 4.4-rc fixes.
The first two were very small in terms of number of lines, the third
is more lines of change than I like this late in the cycle, but there
are positive test results from Avagotech and from my own test setup
with the target hardware, and given the problem was a 100% failure
case, I sent it through.
- A previous patch updated the mlx4 driver to use vmalloc when there
was not enough memory to get a contiguous region large enough for
our needs, so we need kvfree() whenever we free that item. We
missed one place, so fix that now.
- A previous patch added code to match incoming packets against a
specific device, but failed to compensate for devices that have
both InfiniBand and Ethernet ports. Fix that.
- Under certain vlan conditions, the ocrdma driver would fail to
bring up any vlan interfaces and would print out a circular locking
failure. Fix that"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
RDMA/be2net: Remove open and close entry points
RDMA/ocrdma: Depend on async link events from CNA
RDMA/ocrdma: Dispatch only port event when port state changes
RDMA/ocrdma: Fix vlan-id assignment in qp parameters
IB/mlx4: Replace kfree with kvfree in mlx4_ib_destroy_srq
IB/cma: cma_match_net_dev needs to take into account port_num
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Donald Buczek reports that NFS clients can also report incorrect
results for access() due to lack of revalidation of attributes
before calling execute_ok().
Looking closely, it seems chdir() is afflicted with the same problem.
Fix is to ensure we call nfs_revalidate_inode_rcu() or
nfs_revalidate_inode() as appropriate before deciding to trust
execute_ok().
Reported-by: Donald Buczek <buczek@molgen.mpg.de>
Link: http://lkml.kernel.org/r/1451331530-3748-1-git-send-email-buczek@molgen.mpg.de
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If null_blk is run in NULL_IRQ_TIMER mode and with queue_mode NULL_Q_RQ,
we need to restart the queue from the hrtimer interrupt. We can't
directly invoke the request_fn from that context, so punt the queue run
to async kblockd context.
Tested-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Jens Axboe <axboe@fb.com>
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We currently only have an inline/sync helper to restart a stopped
queue. If drivers need an async version, they have to roll their
own. Add a generic helper instead.
Signed-off-by: Jens Axboe <axboe@fb.com>
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* flexfiles:
pNFS/flexfiles: Ensure we record layoutstats even if RPC is terminated early
pNFS: Add flag to track if we've called nfs4_ff_layout_stat_io_start_read/write
pNFS/flexfiles: Fix a statistics gathering imbalance
pNFS/flexfiles: Don't mark the entire layout as failed, when returning it
pNFS/flexfiles: Don't prevent flexfiles client from retrying LAYOUTGET
pnfs/flexfiles: count io stat in rpc_count_stats callback
pnfs/flexfiles: do not mark delay-like status as DS failure
NFS41: map NFS4ERR_LAYOUTUNAVAILABLE to ENODATA
nfs: only remove page from mapping if launder_page fails
nfs: handle request add failure properly
nfs: centralize pgio error cleanup
nfs: clean up rest of reqs when failing to add one
NFS41: pop some layoutget errors to application
pNFS/flexfiles: Support server-supplied layoutstats sampling period
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NFS: NFSoRDMA Client Side Changes
These patches mostly fix send queue ordering issues inside the NFSoRDMA
client, but there are also two patches from Dan Carpenter fixing up smatch
warnings.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* tag 'nfs-rdma-4.5' of git://git.linux-nfs.org/projects/anna/nfs-rdma:
xprtrdma: Revert commit e7104a2a9606 ('xprtrdma: Cap req_cqinit').
xprtrdma: Invalidate in the RPC reply handler
xprtrdma: Add ro_unmap_sync method for all-physical registration
xprtrdma: Add ro_unmap_sync method for FMR
xprtrdma: Add ro_unmap_sync method for FRWR
xprtrdma: Introduce ro_unmap_sync method
xprtrdma: Move struct ib_send_wr off the stack
xprtrdma: Disable RPC/RDMA backchannel debugging messages
xprtrdma: xprt_rdma_free() must not release backchannel reqs
xprtrdma: Fix additional uses of spin_lock_irqsave(rb_lock)
xprtrdma: checking for NULL instead of IS_ERR()
xprtrdma: clean up some curly braces
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The stateid is extremely valuable when debugging.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If the client is promising to return the layout ASAP, then there is no
need to return DELAY and have the server retry. Instead default to the
normal procedure described in RFC5661.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The RFC requires us to check if the server is recalling a stateid that we
haven't yet received. If so, tell it to wait.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If the client needs to delay the layout callback, then speed up the recall
process by marking the remaining layout segments to be actively returned
by the client.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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This ensures that we don't reuse the stateid if a layout return or
implied layout return means that we've returned all layout segments
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If we're unable to perform the layoutget due to an invalid open stateid
or a bulk recall, ensure that we return the error so that the caller
can decide on an appropriate action.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Currently, we will only record the layoutstats correctly if the
RPC call successfully obtains a slot. If we exit before that
happens, then we may find ourselves starting the busy timer through
the call in ff_layout_(read|write)_prepare_layoutstats, but never stopping it.
The same thing happens if we're doing DA-DS.
The fix is to ensure that we catch these cases in the rpc_release()
callback.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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When we replay a failed read, write or commit to the dataserver, we
need to ensure that we call ff_layout_read_prepare_v3(),
ff_layout_write_prepare_v3 or ff_layout_commit_prepare_v3() so that we
reset the statistics.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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In pNFS/flexfiles, we want to return the layout without necessarily marking
it as having completely failed. We therefore move the call to
pnfs_layout_io_set_failed() out of pnfs_error_mark_layout_for_return(),
and then ensura that pNFS/files layout calls it separately.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Fix a bug in which flexfiles clients are falling back to I/O through the
MDS even when the FF_FLAGS_NO_IO_THRU_MDS flag is set.
The flexfiles client will always report errors through the LAYOUTRETURN
and/or LAYOUTERROR mechanisms, so it should normally be safe for it
to retry the LAYOUTGET until it fails or succeeds.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If client ever restarts IO due to some errors, we'll endup
mis-counting IO stats if we do the counting in .rpc_done
callback. Move it to .rpc_count_stats callback that is only
called when releasing RPC.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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We just need to delay and retry in these cases.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Instead of mapping it to EIO that is a fatal error and
fails application. We'll go inband after getting
NFS4ERR_LAYOUTUNAVAILABLE.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Instead of dropping pages when write fails, only do it when
we get fatal failure in launder_page write back.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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When we fail to queue a read page to IO descriptor,
we need to clean it up otherwise it is hanging around
preventing nfs module from being removed.
When we fail to queue a write page to IO descriptor,
we need to clean it up and also save the failure status
to open context. Then at file close, we can try to write
pages back again and drop the page if it fails to writeback
in .launder_page, which will be done in the next patch.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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In case we fail during setting things up for read/write IO, set
pg_error in IO descriptor and do the cleanup in nfs_pageio_add_request,
where we clean up all pages that are still hanging around on the IO
descriptor.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If we fail to set up things before sending anything over wire,
we need to clean up the reqs that are still attached to the
IO descriptor.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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For ERESTARTSYS/EIO/EROFS/ENOSPC/E2BIG in layoutget, we
should just bail out instead of hiding the error and
retrying inband IO.
Change all the call sites to pop the error all the way up.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Some servers want to be able to control the frequency with which clients
report layoutstats, for instance, in order to monitor QoS for a particular
file or set of file. In order to support this, the flexfiles layout allows
the server to pass this info as a hint in the layout payload.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"This fixes a bug in the algif_skcipher interface that can trigger a
kernel WARN_ON from user-space. It does so by using the new skcipher
interface which unlike the previous ablkcipher does not need to create
extra geniv objects which is what was used to trigger the WARN_ON"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: algif_skcipher - Use new skcipher interface
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull key handling bugfix from James Morris:
"Fix a race between keyctl_read() and keyctl_revoke()"
* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
KEYS: Fix race between read and revoke
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If there are already writes queued up for commit, then don't flush
just this page even if it is a reclaim issue.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Background flush is needed in order to satisfy the global page limits.
Don't subvert by reducing the priority.
This should also address a write starvation issue that was reported by
Neil Brown.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Since commit 2d8ae84fbc32, nothing is bumping lo->plh_block_lgets in the
layoutreturn path, so it should not be touched in nfs4_layoutreturn_release
either.
Fixes: 2d8ae84fbc32 ("NFSv4.1/pnfs: Remove redundant lo->plh_block_lgets...")
Cc: stable@vger.kernel.org # 4.3+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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