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2018-09-30SUNRPC: Refactor xprt_transmit() to remove wait for reply codeTrond Myklebust
Allow the caller in clnt.c to call into the code to wait for a reply after calling xprt_transmit(). Again, the reason is that the backchannel code does not need this functionality. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Refactor xprt_transmit() to remove the reply queue codeTrond Myklebust
Separate out the action of adding a request to the reply queue so that the backchannel code can simply skip calling it altogether. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Rename xprt->recv_lock to xprt->queue_lockTrond Myklebust
We will use the same lock to protect both the transmit and receive queues. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Don't wake queued RPC calls multiple times in xprt_transmitTrond Myklebust
Rather than waking up the entire queue of RPC messages a second time, just wake up the task that was put to sleep. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Test whether the task is queued before grabbing the queue spinlocksTrond Myklebust
When asked to wake up an RPC task, it makes sense to test whether or not the task is still queued. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Add a helper to wake up a sleeping rpc_task and set its statusTrond Myklebust
Add a helper that will wake up a task that is sleeping on a specific queue, and will set the value of task->tk_status. This is mainly intended for use by the transport layer to notify the task of an error condition. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Refactor the transport request pinningTrond Myklebust
We are going to need to pin for both send and receive. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Simplify dealing with aborted partially transmitted messagesTrond Myklebust
If the previous message was only partially transmitted, we need to close the socket in order to avoid corruption of the message stream. To do so, we currently hijack the unlocking of the socket in order to schedule the close. Now that we track the message offset in the socket state, we can move that kind of checking out of the socket lock code, which is needed to allow messages to remain queued after dropping the socket lock. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Add socket transmit queue offset trackingTrond Myklebust
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Move reset of TCP state variables into the reconnect codeTrond Myklebust
Rather than resetting state variables in socket state_change() callback, do it in the sunrpc TCP connect function itself. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Rename TCP receive-specific state variablesTrond Myklebust
Since we will want to introduce similar TCP state variables for the transmission of requests, let's rename the existing ones to label that they are for the receive side. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Avoid holding locks across the XDR encoding of the RPC messageTrond Myklebust
Currently, we grab the socket bit lock before we allow the message to be XDR encoded. That significantly slows down the transmission rate, since we serialise on a potentially blocking operation. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Simplify identification of when the message send/receive is completeTrond Myklebust
Add states to indicate that the message send and receive are not yet complete. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: The transmitted message must lie in the RPCSEC window of validityTrond Myklebust
If a message has been encoded using RPCSEC_GSS, the server is maintaining a window of sequence numbers that it considers valid. The client should normally be tracking that window, and needs to verify that the sequence number used by the message being transmitted still lies inside the window of validity. So far, we've been able to assume this condition would be realised automatically, since the client has been encoding the message only after taking the socket lock. Once we change that condition, we will need the explicit check. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: If there is no reply expected, bail early from call_decodeTrond Myklebust
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30SUNRPC: Clean up initialisation of the struct rpc_rqstTrond Myklebust
Move the initialisation back into xprt.c. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2018-09-30Linux 4.19-rc6Greg Kroah-Hartman
2018-09-30Merge tag 'auxdisplay-for-greg-v4.19-rc6' of https://github.com/ojeda/linuxGreg Kroah-Hartman
Miguel writes: "A trivial fix for auxdisplay - MAINTAINERS reference fix for moved file Reported by Joe Perches" * tag 'auxdisplay-for-greg-v4.19-rc6' of https://github.com/ojeda/linux: MAINTAINERS: fix reference to moved drivers/{misc => auxdisplay}/panel.c
2018-09-30Merge tag 'libnvdimm-fixes2-4.19-rc6' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Dan writes: "filesystem-dax for 4.19-rc6 Fix a deadlock in the new for 4.19 dax_lock_mapping_entry() routine." * tag 'libnvdimm-fixes2-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax: Fix deadlock in dax_lock_mapping_entry()
2018-09-30MAINTAINERS: fix reference to moved drivers/{misc => auxdisplay}/panel.cMiguel Ojeda
Commit 51c1e9b554c9 ("auxdisplay: Move panel.c to drivers/auxdisplay folder") moved the file, but the MAINTAINERS reference was not updated. Link: https://lore.kernel.org/lkml/20180928220131.31075-1-joe@perches.com/ Reported-by: Joe Perches <joe@perches.com> Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
2018-09-29Merge tag 'for-linus-20180929' of git://git.kernel.dk/linux-blockGreg Kroah-Hartman
Jens writes: "Block fixes for 4.19-rc6 A set of fixes that should go into this release. This pull request contains: - A fix (hopefully) for the persistent grants for xen-blkfront. A previous fix from this series wasn't complete, hence reverted, and this one should hopefully be it. (Boris Ostrovsky) - Fix for an elevator drain warning with SMR devices, which is triggered when you switch schedulers (Damien) - bcache deadlock fix (Guoju Fang) - Fix for the block unplug tracepoint, which has had the timer/explicit flag reverted since 4.11 (Ilya) - Fix a regression in this series where the blk-mq timeout hook is invoked with the RCU read lock held, hence preventing it from blocking (Keith) - NVMe pull from Christoph, with a single multipath fix (Susobhan Dey)" * tag 'for-linus-20180929' of git://git.kernel.dk/linux-block: xen/blkfront: correct purging of persistent grants Revert "xen/blkfront: When purging persistent grants, keep them in the buffer" blk-mq: I/O and timer unplugs are inverted in blktrace bcache: add separate workqueue for journal_write to avoid deadlock xen/blkfront: When purging persistent grants, keep them in the buffer block: fix deadline elevator drain for zoned block devices blk-mq: Allow blocking queue tag iter callbacks nvme: properly propagate errors in nvme_mpath_init
2018-09-29Merge branch 'x86-urgent-for-linus' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Thomas writes: "A single fix for the AMD memory encryption boot code so it does not read random garbage instead of the cached encryption bit when a kexec kernel is allocated above the 32bit address limit." * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/boot: Fix kexec booting failure in the SEV bit detection code
2018-09-29Merge branch 'timers-urgent-for-linus' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Thomas writes: "Three small fixes for clocksource drivers: - Proper error handling in the Atmel PIT driver - Add CLOCK_SOURCE_SUSPEND_NONSTOP for TI SoCs so suspend works again - Fix the next event function for Facebook Backpack-CMM BMC chips so usleep(100) doesnt sleep several milliseconds" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/timer-atmel-pit: Properly handle error cases clocksource/drivers/fttmr010: Fix set_next_event handler clocksource/drivers/ti-32k: Add CLOCK_SOURCE_SUSPEND_NONSTOP flag for non-am43 SoCs
2018-09-29Merge branch 'perf-urgent-for-linus' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Thomas writes: "A single fix for a missing sanity check when a pinned event is tried to be read on the wrong CPU due to a legit event scheduling failure." * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Add sanity check to deal with pinned event failure
2018-09-29Merge tag 'pm-4.19-rc6' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Rafael writes: "Power management fix for 4.19-rc6 Fix incorrect __init and __exit annotations in the Qualcomm Kryo cpufreq driver (Nathan Chancellor)." * tag 'pm-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: qcom-kryo: Fix section annotations
2018-09-29cpufreq: qcom-kryo: Fix section annotationsNathan Chancellor
There is currently a warning when building the Kryo cpufreq driver into the kernel image: WARNING: vmlinux.o(.text+0x8aa424): Section mismatch in reference from the function qcom_cpufreq_kryo_probe() to the function .init.text:qcom_cpufreq_kryo_get_msm_id() The function qcom_cpufreq_kryo_probe() references the function __init qcom_cpufreq_kryo_get_msm_id(). This is often because qcom_cpufreq_kryo_probe lacks a __init annotation or the annotation of qcom_cpufreq_kryo_get_msm_id is wrong. Remove the '__init' annotation from qcom_cpufreq_kryo_get_msm_id so that there is no more mismatch warning. Additionally, Nick noticed that the remove function was marked as '__init' when it should really be marked as '__exit'. Fixes: 46e2856b8e18 (cpufreq: Add Kryo CPU scaling driver) Fixes: 5ad7346b4ae2 (cpufreq: kryo: Add module remove and exit) Reported-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 4.18+ <stable@vger.kernel.org> # 4.18+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-09-29Merge tag 'dma-mapping-4.19-3' of git://git.infradead.org/users/hch/dma-mappingGreg Kroah-Hartman
Christoph writes: "dma mapping fix for 4.19-rc6 fix a missing Kconfig symbol for commits introduced in 4.19-rc" * tag 'dma-mapping-4.19-3' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: add the missing ARCH_HAS_SYNC_DMA_FOR_CPU_ALL declaration
2018-09-28Merge branch 'for-linus' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Dmitry writes: "Input updates for v4.19-rc5 Just a few driver fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: uinput - allow for max == min during input_absinfo validation Input: elantech - enable middle button of touchpad on ThinkPad P72 Input: atakbd - fix Atari CapsLock behaviour Input: atakbd - fix Atari keymap Input: egalax_ts - add system wakeup support Input: gpio-keys - fix a documentation index issue
2018-09-28Merge tag 'spi-fix-v4.19-rc5' of ↵Greg Kroah-Hartman
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Mark writes: "spi: Fixes for v4.19 Quite a few fixes for the Renesas drivers in here, plus a fix for the Tegra driver and some documentation fixes for the recently added spi-mem code. The Tegra fix is relatively large but fairly straightforward and mechanical, it runs on probe so it's been reasonably well covered in -next testing." * tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: spi-mem: Move the DMA-able constraint doc to the kerneldoc header spi: spi-mem: Add missing description for data.nbytes field spi: rspi: Fix interrupted DMA transfers spi: rspi: Fix invalid SPI use during system suspend spi: sh-msiof: Fix handling of write value for SISTR register spi: sh-msiof: Fix invalid SPI use during system suspend spi: gpio: Fix copy-and-paste error spi: tegra20-slink: explicitly enable/disable clock
2018-09-28Merge tag 'regulator-v4.19-rc5' of ↵Greg Kroah-Hartman
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Mark writes: "regulator: Fixes for 4.19 A collection of fairly minor bug fixes here, a couple of driver specific ones plus two core fixes. There's one fix for the new suspend state code which fixes some confusion with constant values that are supposed to indicate noop operation and another fixing a race condition with the creation of sysfs files on new regulators." * tag 'regulator-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: fix crash caused by null driver data regulator: Fix 'do-nothing' value for regulators without suspend state regulator: da9063: fix DT probing with constraints regulator: bd71837: Disable voltage monitoring for LDO3/4
2018-09-28Merge tag 'powerpc-4.19-3' of ↵Greg Kroah-Hartman
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Michael writes: "powerpc fixes for 4.19 #3 A reasonably big batch of fixes due to me being away for a few weeks. A fix for the TM emulation support on Power9, which could result in corrupting the guest r11 when running under KVM. Two fixes to the TM code which could lead to userspace GPR corruption if we take an SLB miss at exactly the wrong time. Our dynamic patching code had a bug that meant we could patch freed __init text, which could lead to corrupting userspace memory. csum_ipv6_magic() didn't work on little endian platforms since we optimised it recently. A fix for an endian bug when reading a device tree property telling us how many storage keys the machine has available. Fix a crash seen on some configurations of PowerVM when migrating the partition from one machine to another. A fix for a regression in the setup of our CPU to NUMA node mapping in KVM guests. A fix to our selftest Makefiles to make them work since a recent change to the shared Makefile logic." * tag 'powerpc-4.19-3' of https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Fix Makefiles for headers_install change powerpc/numa: Use associativity if VPHN hcall is successful powerpc/tm: Avoid possible userspace r1 corruption on reclaim powerpc/tm: Fix userspace r13 corruption powerpc/pseries: Fix unitialized timer reset on migration powerpc/pkeys: Fix reading of ibm, processor-storage-keys property powerpc: fix csum_ipv6_magic() on little endian platforms powerpc/powernv/ioda2: Reduce upper limit for DMA window size (again) powerpc: Avoid code patching freed init sections KVM: PPC: Book3S HV: Fix guest r11 corruption with POWER9 TM workarounds
2018-09-28Merge tag 'pinctrl-v4.19-4' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Linus writes: "Pin control fixes for v4.19: - Fixes to x86 hardware: - AMD interrupt debounce issues - Faulty Intel cannonlake register offset - Revert pin translation IRQ locking" * tag 'pinctrl-v4.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: Revert "pinctrl: intel: Do pin translation when lock IRQ" pinctrl: cannonlake: Fix HOSTSW_OWN register offset of H variant pinctrl/amd: poll InterruptEnable bits in amd_gpio_irq_set_type
2018-09-28perf/core: Add sanity check to deal with pinned event failureReinette Chatre
It is possible that a failure can occur during the scheduling of a pinned event. The initial portion of perf_event_read_local() contains the various error checks an event should pass before it can be considered valid. Ensure that the potential scheduling failure of a pinned event is checked for and have a credible error. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: fenghua.yu@intel.com Cc: tony.luck@intel.com Cc: acme@kernel.org Cc: gavin.hindman@intel.com Cc: jithu.joseph@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/6486385d1f30336e9973b24c8c65f5079543d3d3.1537377064.git.reinette.chatre@intel.com
2018-09-28Merge tag 'drm-fixes-2018-09-28' of git://anongit.freedesktop.org/drm/drmGreg Kroah-Hartman
Dave writes: "drm fixes for 4.19-rc6 Looks like a pretty normal week for graphics, core: syncobj fix, panel link regression revert amd: suspend/resume fixes, EDID emulation fix mali-dp: NV12 writeback and vblank reset fixes etnaviv: DMA setup fix" * tag 'drm-fixes-2018-09-28' of git://anongit.freedesktop.org/drm/drm: drm/amd/display: Fix Edid emulation for linux drm/amd/display: Fix Vega10 lightup on S3 resume drm/amdgpu: Fix vce work queue was not cancelled when suspend Revert "drm/panel: Add device_link from panel device to DRM device" drm/syncobj: Don't leak fences when WAIT_FOR_SUBMIT is set drm/malidp: Fix writeback in NV12 drm: mali-dp: Call drm_crtc_vblank_reset on device init drm/etnaviv: add DMA configuration for etnaviv platform device
2018-09-28Merge tag 'riscv-for-linus-4.19-rc6' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux Palmer writes: "A Single RISC-V Update for 4.19-rc6 The Debian guys have been pushing on our port and found some unversioned symbols leaking into modules. This PR contains a single fix for that issue." * tag 'riscv-for-linus-4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux: RISC-V: include linux/ftrace.h in asm-prototypes.h
2018-09-28Merge tag 'pci-v4.19-fixes-2' of ↵Greg Kroah-Hartman
ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Bjorn writes: "PCI fixes: - Fix ACPI hotplug issue that causes black screen crash at boot (Mika Westerberg) - Fix DesignWare "scheduling while atomic" issues (Jisheng Zhang) - Add PPC contacts to MAINTAINERS for PCI core error handling (Bjorn Helgaas) - Sort Mobiveil MAINTAINERS entry (Lorenzo Pieralisi)" * tag 'pci-v4.19-fixes-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: ACPI / hotplug / PCI: Don't scan for non-hotplug bridges if slot is not bridge PCI: dwc: Fix scheduling while atomic issues MAINTAINERS: Move mobiveil PCI driver entry where it belongs MAINTAINERS: Update PPC contacts for PCI core error handling
2018-09-28Merge branch 'nvme-4.19' of git://git.infradead.org/nvme into for-linusJens Axboe
Pull NVMe fix from Christoph. * 'nvme-4.19' of git://git.infradead.org/nvme: nvme: properly propagate errors in nvme_mpath_init
2018-09-28xen/blkfront: correct purging of persistent grantsJuergen Gross
Commit a46b53672b2c2e3770b38a4abf90d16364d2584b ("xen/blkfront: cleanup stale persistent grants") introduced a regression as purged persistent grants were not pu into the list of free grants again. Correct that. Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-09-28Revert "xen/blkfront: When purging persistent grants, keep them in the buffer"Jens Axboe
Fix didn't work for all cases, reverting to add a (hopefully) better fix. This reverts commit f151ba989d149bbdfc90e5405724bbea094f9b17. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-09-28selftests/powerpc: Fix Makefiles for headers_install changeMichael Ellerman
Commit b2d35fa5fc80 ("selftests: add headers_install to lib.mk") introduced a requirement that Makefiles more than one level below the selftests directory need to define top_srcdir, but it didn't update any of the powerpc Makefiles. This broke building all the powerpc selftests with eg: make[1]: Entering directory '/src/linux/tools/testing/selftests/powerpc' BUILD_TARGET=/src/linux/tools/testing/selftests/powerpc/alignment; mkdir -p $BUILD_TARGET; make OUTPUT=$BUILD_TARGET -k -C alignment all make[2]: Entering directory '/src/linux/tools/testing/selftests/powerpc/alignment' ../../lib.mk:20: ../../../../scripts/subarch.include: No such file or directory make[2]: *** No rule to make target '../../../../scripts/subarch.include'. make[2]: Failed to remake makefile '../../../../scripts/subarch.include'. Makefile:38: recipe for target 'alignment' failed Fix it by setting top_srcdir in the affected Makefiles. Fixes: b2d35fa5fc80 ("selftests: add headers_install to lib.mk") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-09-28Merge branch 'drm-fixes-4.19' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-fixes Just a few fixes for 4.19: - Couple of suspend/resume fixes - Fix EDID emulation with DC Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180927155418.2813-1-alexander.deucher@amd.com
2018-09-28Merge tag 'drm-misc-fixes-2018-09-27-1' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes - Revert adding device-link to panels - Don't leak fences in drm/syncobj Signed-off-by: Dave Airlie <airlied@redhat.com> From: Sean Paul <sean@poorly.run> Link: https://patchwork.freedesktop.org/patch/msgid/20180927152712.GA53076@art_vandelay
2018-09-27Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaGreg Kroah-Hartman
Jason writes: "Second RDMA rc pull request - Fix a long standing race bug when destroying comp_event file descriptors - srp, hfi1, bnxt_re: Various driver crashes from missing validation and other cases - Fixes for regressions in patches merged this window in the gid cache, devx, ucma and uapi." * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: RDMA/core: Set right entry state before releasing reference IB/mlx5: Destroy the DEVX object upon error flow IB/uverbs: Free uapi on destroy RDMA/bnxt_re: Fix system crash during RDMA resource initialization IB/hfi1: Fix destroy_qp hang after a link down IB/hfi1: Fix context recovery when PBC has an UnsupportedVL IB/hfi1: Invalid user input can result in crash IB/hfi1: Fix SL array bounds check RDMA/uverbs: Fix validity check for modify QP IB/srp: Avoid that sg_reset -d ${srp_device} triggers an infinite loop ucma: fix a use-after-free in ucma_resolve_ip() RDMA/uverbs: Atomically flush and mark closed the comp event queue cxgb4: fix abort_req_rss6 struct
2018-09-27Merge tag 'for_v4.19-rc6' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Jan writes: "an ext2 patch fixing fsync(2) for DAX mounts." * tag 'for_v4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: ext2, dax: set ext2_dax_aops for dax files
2018-09-27blk-mq: I/O and timer unplugs are inverted in blktraceIlya Dryomov
trace_block_unplug() takes true for explicit unplugs and false for implicit unplugs. schedule() unplugs are implicit and should be reported as timer unplugs. While correct in the legacy code, this has been inverted in blk-mq since 4.11. Cc: stable@vger.kernel.org Fixes: bd166ef183c2 ("blk-mq-sched: add framework for MQ capable IO schedulers") Reviewed-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-09-27dax: Fix deadlock in dax_lock_mapping_entry()Jan Kara
When dax_lock_mapping_entry() has to sleep to obtain entry lock, it will fail to unlock mapping->i_pages spinlock and thus immediately deadlock against itself when retrying to grab the entry lock again. Fix the problem by unlocking mapping->i_pages before retrying. Fixes: c2a7d2a11552 ("filesystem-dax: Introduce dax_lock_mapping_entry()") Reported-by: Barret Rhoden <brho@google.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2018-09-27x86/boot: Fix kexec booting failure in the SEV bit detection codeKairui Song
Commit 1958b5fc4010 ("x86/boot: Add early boot support when running with SEV active") can occasionally cause system resets when kexec-ing a second kernel even if SEV is not active. That's because get_sev_encryption_bit() uses 32-bit rIP-relative addressing to read the value of enc_bit - a variable which caches a previously detected encryption bit position - but kexec may allocate the early boot code to a higher location, beyond the 32-bit addressing limit. In this case, garbage will be read and get_sev_encryption_bit() will return the wrong value, leading to accessing memory with the wrong encryption setting. Therefore, remove enc_bit, and thus get rid of the need to do 32-bit rIP-relative addressing in the first place. [ bp: massage commit message heavily. ] Fixes: 1958b5fc4010 ("x86/boot: Add early boot support when running with SEV active") Suggested-by: Borislav Petkov <bp@suse.de> Signed-off-by: Kairui Song <kasong@redhat.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com> Cc: linux-kernel@vger.kernel.org Cc: tglx@linutronix.de Cc: mingo@redhat.com Cc: hpa@zytor.com Cc: brijesh.singh@amd.com Cc: kexec@lists.infradead.org Cc: dyoung@redhat.com Cc: bhe@redhat.com Cc: ghook@redhat.com Link: https://lkml.kernel.org/r/20180927123845.32052-1-kasong@redhat.com
2018-09-27bcache: add separate workqueue for journal_write to avoid deadlockGuoju Fang
After write SSD completed, bcache schedules journal_write work to system_wq, which is a public workqueue in system, without WQ_MEM_RECLAIM flag. system_wq is also a bound wq, and there may be no idle kworker on current processor. Creating a new kworker may unfortunately need to reclaim memory first, by shrinking cache and slab used by vfs, which depends on bcache device. That's a deadlock. This patch create a new workqueue for journal_write with WQ_MEM_RECLAIM flag. It's rescuer thread will work to avoid the deadlock. Signed-off-by: Guoju Fang <fangguoju@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-09-27drm/amd/display: Fix Edid emulation for linuxBhawanpreet Lakha
[Why] EDID emulation didn't work properly for linux, as we stop programming if nothing is connected physically. [How] We get a flag from DRM when we want to do edid emulation. We check if this flag is true and nothing is connected physically, if so we only program the front end using VIRTUAL_SIGNAL. Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-09-27drm/amd/display: Fix Vega10 lightup on S3 resumeRoman Li
[Why] There have been a few reports of Vega10 display remaining blank after S3 resume. The regression is caused by workaround for mode change on Vega10 - skip set_bandwidth if stream count is 0. As a result we skipped dispclk reset on suspend, thus on resume we may skip the clock update assuming it hasn't been changed. On some systems it causes display blank or 'out of range'. [How] Revert "drm/amd/display: Fix Vega10 black screen after mode change" Verified that it hadn't cause mode change regression. Signed-off-by: Roman Li <Roman.Li@amd.com> Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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