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2022-07-25USB: cdc: add control-signal definesJohan Hovold
Add defines for the Control Signal Bitmap Values from section 6.2.14 SetControlLineState of the CDC specification version 1.1. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20220725075841.1187-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-25Merge branch irq/misc-5.20 into irq/irqchip-nextMarc Zyngier
* irq/misc-5.20: : . : Misc IRQ changes for 5.20: : : - Let irq_set_chip_handler_name_locked() take a const struct irq_chip * : : - Convert the ocelot irq_chip to being immutable (depends on the above) : : - Tidy-up the NOMAP irqdomain API variant : : - Teach action_show() to use for_each_action_of_desc() : : - Check ioremap() return value in the MIPS GIC driver : : - Move MMP driver init function declarations into the common .h : : - The obligatory typo fixes : . irqchip/mmp: Declare init functions in common header file irqchip/mips-gic: Check the return value of ioremap() in gic_of_init() genirq: Use for_each_action_of_desc in actions_show() irqdomain: Use hwirq_max instead of revmap_size for NOMAP domains irqdomain: Report irq number for NOMAP domains irqchip/gic-v3: Fix comment typo pinctrl: ocelot: Make irq_chip immutable genirq: Allow irq_set_chip_handler_name_locked() to take a const irq_chip Signed-off-by: Marc Zyngier <maz@kernel.org>
2022-07-25irqchip/mmp: Declare init functions in common header fileBen Dooks
The functions icu_init_irq and mmp2_init_icu are exported from this code, so declare them in the header file to avoid the following sparse warnings: drivers/irqchip/irq-mmp.c:248:13: warning: symbol 'icu_init_irq' was not declared. Should it be static? drivers/irqchip/irq-mmp.c:271:13: warning: symbol 'mmp2_init_icu' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben-linux@fluff.org> [maz: fixup commit message] Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220724222152.551850-1-ben-linux@fluff.org
2022-07-25x86/purgatory: Omit use of bin2cMasahiro Yamada
The .incbin assembler directive is much faster than bin2c + $(CC). Do similar refactoring as in 4c0f032d4963 ("s390/purgatory: Omit use of bin2c"). Please note the .quad directive matches to size_t in C (both 8 byte) because the purgatory is compiled only for the 64-bit kernel. (KEXEC_FILE depends on X86_64). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220725020812.622255-2-masahiroy@kernel.org
2022-07-25x86/purgatory: Hard-code obj-y in MakefileMasahiro Yamada
arch/x86/Kbuild guards the entire purgatory/ directory, and CONFIG_KEXEC_FILE is bool type. $(CONFIG_KEXEC_FILE) is always 'y' when this directory is being built. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20220725020812.622255-1-masahiroy@kernel.org
2022-07-25dt-bindings: arm: at91: add lan966 pcb8309 boardHoratiu Vultur
Add documentation for Microchip LAN9662 PCB8309. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Link: https://lore.kernel.org/r/20220722131836.2377720-2-horatiu.vultur@microchip.com
2022-07-25ALSA: hda/realtek: Enable speaker and mute LEDs for HP laptopsKai-Heng Feng
Two more HP laptops that use cs35l41 AMP for speaker and GPIO for mute LEDs. So use the existing quirk to enable them accordingly. [ Sort the entries at the SSID order by tiwai ] Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Reviewed-by: Lucas Tanure <tanureal@opensource.cirrus.com> Link: https://lore.kernel.org/r/20220719142015.244426-1-kai.heng.feng@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-25Merge branch 'for-linus' into for-nextTakashi Iwai
Merge 5.19-rc devel branch for applying HD-audio quirk patches more cleanly. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-25ALSA: hda: cs35l41: Fix build error unused-functionRen Zhijie
If CONFIG_PM_SLEEP is not set, make ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu-, will be failed, like this: sound/pci/hda/cs35l41_hda.c:583:12: error: ‘cs35l41_runtime_resume’ defined but not used [-Werror=unused-function] static int cs35l41_runtime_resume(struct device *dev) ^~~~~~~~~~~~~~~~~~~~~~ sound/pci/hda/cs35l41_hda.c:565:12: error: ‘cs35l41_runtime_suspend’ defined but not used [-Werror=unused-function] static int cs35l41_runtime_suspend(struct device *dev) ^~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors make[3]: *** [sound/pci/hda/cs35l41_hda.o] Error 1 commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate old ones"), add new marco RUNTIME_PM_OPS to fix this unused-function problem. Fixes: 1873ebd30cc8 ("ALSA: hda: cs35l41: Support Hibernation during Suspend") Signed-off-by: Ren Zhijie <renzhijie2@huawei.com> Link: https://lore.kernel.org/r/20220725023611.57055-1-renzhijie2@huawei.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-25ALSA: hiface: fix repeated words in commentswangjianli
Delete the redundant word 'in'. Signed-off-by: wangjianli <wangjianli@cdjrlc.com> Link: https://lore.kernel.org/r/20220724071829.11117-1-wangjianli@cdjrlc.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-25ALSA: usb/6fire: fix repeated words in commentswangjianli
Delete the redundant word 'in'. Signed-off-by: wangjianli <wangjianli@cdjrlc.com> Link: https://lore.kernel.org/r/20220724071644.10630-1-wangjianli@cdjrlc.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-25ALSA: asihpi: fix repeated words in commentswangjianli
Delete the redundant word 'in'. Signed-off-by: wangjianli <wangjianli@cdjrlc.com> Link: https://lore.kernel.org/r/20220724071413.10085-1-wangjianli@cdjrlc.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-07-25nvme-pci: Crucial P2 has bogus namespace idsTobias Gruetzmacher
This adds a quirk for the Crucial P2. Signed-off-by: Tobias Gruetzmacher <tobias-git@23.gs> Signed-off-by: Christoph Hellwig <hch@lst.de>
2022-07-25Merge tag 'v5.19-rc7' into fixesMichael Ellerman
Merge v5.19-rc7 into fixes to bring in: d11219ad53dc ("amdgpu: disable powerpc support for the newer display engine")
2022-07-25powerpc/mobility: wait for memory transfer to completeLaurent Dufour
In pseries_migration_partition(), loop until the memory transfer is complete. This way the calling drmgr process will not exit earlier, allowing callbacks to be run only once the migration is fully completed. If reading the VASI state is done after the hypervisor has completed the migration, the HCALL is returning H_PARAMETER. We can safely assume that the memory transfer is achieved if this happens. This will also allow to manage the NMI watchdog state in the next commits. Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by: Nathan Lynch <nathanl@linux.ibm.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220713154729.80789-2-ldufour@linux.ibm.com
2022-07-25selftests/powerpc/ptrace: Add peek/poke of FPRsMichael Ellerman
Currently the ptrace-gpr test only tests the GET/SET(FP)REGS ptrace APIs. But there's an alternate (older) API, called PEEK/POKEUSR. Add some minimal testing of PEEK/POKEUSR of the FPRs. This is sufficient to detect the bug that was fixed recently in the 32-bit ptrace FPR handling. Depends-on: 8e1278444446 ("powerpc/32: Fix overread/overwrite of thread_struct via ptrace") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-13-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Use more interesting valuesMichael Ellerman
The ptrace-gpr test uses fixed values to test that registers can be read/written via ptrace. In particular it sets all GPRs to 1, which means the test could miss some types of bugs - eg. if the kernel was only returning the low word. So generate some random values at startup and use those instead. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-12-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Make child errors more obviousMichael Ellerman
Use the FAIL_IF() macro so that errors in the child report a line number, rather than just silently exiting. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-11-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Do more of ptrace-gpr in asmMichael Ellerman
The ptrace-gpr test includes some inline asm to load GPR and FPR registers. It then goes back to C to wait for the parent to trace it and then checks register contents. The split between inline asm and C is fragile, it relies on the compiler not using any non-volatile GPRs after the inline asm block. It also requires a very large and unwieldy inline asm block. So convert the logic to set registers, wait, and store registers to a single asm function, meaning there's no window for the compiler to intervene. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-10-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Build the ptrace-gpr test as 32-bit when possibleMichael Ellerman
The ptrace-gpr test can now be built 32-bit, so do that if that's the compiler default rather than forcing a 64-bit build. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-9-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Convert to load/store doublesMichael Ellerman
Some of the ptrace tests check the contents of floating pointer registers. Currently these use float, which is always 4 bytes, but the ptrace API supports saving/restoring 8 bytes per register, so switch to using doubles to exercise the code more fully. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-8-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Drop unused load_fpr_single_precision()Michael Ellerman
This function is never called, drop it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-7-mpe@ellerman.id.au
2022-07-25selftests/powerpc: Add 32-bit support to asm helpersMichael Ellerman
Add support for 32-bit builds to the asm helpers. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-6-mpe@ellerman.id.au
2022-07-25selftests/powerpc: Don't save TOC by default in asm helpersMichael Ellerman
Thare are some asm helpers for creating/popping stack frames in basic_asm.h. They always save/restore r2 (TOC pointer), but none of the selftests change r2, so it's unnecessary to save it by default. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-5-mpe@ellerman.id.au
2022-07-25selftests/powerpc: Don't save CR by default in asm helpersMichael Ellerman
Thare are some asm helpers for creating/popping stack frames in basic_asm.h. They always save/restore CR, but none of the selftests tests touch non-volatile CR fields, so it's unnecessary to save them by default. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-4-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Split CFLAGS betterMichael Ellerman
Currently all ptrace tests are built 64-bit and with TM enabled. Only the TM tests need TM enabled, so split those out into a separate variable so that can be specified precisely. Split the rest of the tests into a variable, and add -m64 to CFLAGS for those tests, so that in a subsequent patch some tests can be made to build 32-bit. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-3-mpe@ellerman.id.au
2022-07-25selftests/powerpc/ptrace: Set LOCAL_HDRSMichael Ellerman
Set LOCAL_HDRS so header changes cause rebuilds. The lib.mk logic adds all the headers in LOCAL_HDRS as dependencies, so there's no need to also list them explicitly. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-2-mpe@ellerman.id.au
2022-07-25selftests/powerpc: Ensure 16-byte stack pointer alignmentMichael Ellerman
The PUSH/POP_BASIC_STACK helpers in basic_asm.h do not ensure that the stack pointer is always 16-byte aligned, which is required per the ABI. Fix the macros to do the alignment if the caller fails to. Currently only one caller passes a non-aligned size, tm_signal_self(), which hasn't been caught in testing, presumably because it's a leaf function. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220627140239.2464900-1-mpe@ellerman.id.au
2022-07-25powerpc: Fix all occurences of duplicate wordsMichael Ellerman
Since commit 87c78b612f4f ("powerpc: Fix all occurences of "the the"") fixed "the the", there's now a steady stream of patches fixing other duplicate words. Just fix them all at once, to save the overhead of dealing with individual patches for each case. This leaves a few cases of "that that", which in some contexts is correct. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220718095158.326606-1-mpe@ellerman.id.au
2022-07-25Merge branch 'fixes' into nextMichael Ellerman
Bring in a build fix for GCC12 from our fixes branch.
2022-07-24selftests/io_uring: test zerocopy sendPavel Begunkov
Add selftests for io_uring zerocopy sends and io_uring's notification infrastructure. It's largely influenced by msg_zerocopy and uses it on the receive side. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/03d5ec78061cf52db420f88ed0b48eb8f47ce9f7.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: enable managed frags with register buffersPavel Begunkov
io_uring's registered buffers infra has a good performant way of pinning pages, so let's use SKBFL_MANAGED_FRAG_REFS when our requests are purely register buffer backed. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/278731d3f20caf346cfc025fbee0b4c9ee4ed751.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: add zc notification flush requestsPavel Begunkov
Overlay notification control onto IORING_OP_RSRC_UPDATE (former IORING_OP_FILES_UPDATE). It allows to flush a range of zc notifications from slots with indexes [sqe->off, sqe->off+sqe->len). If sqe->arg is not zero, it also copies sqe->arg as a new tag for all flushed notifications. Note, it doesn't flush a notification of a slot if there was no requests attached to it (since last flush or registration). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/df13e2363400682a73dd9e71c3b990b8d1ff0333.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: rename IORING_OP_FILES_UPDATEPavel Begunkov
IORING_OP_FILES_UPDATE will be a more generic opcode serving different resource types, rename it into IORING_OP_RSRC_UPDATE and add subtype handling. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/0a907133907d9af3415a8a7aa1802c6aa97c03c6.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: flush notifiers after sendzcPavel Begunkov
Allow to flush notifiers as a part of sendzc request by setting IORING_SENDZC_FLUSH flag. When the sendzc request succeedes it will flush the used [active] notifier. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/e0b4d9a6797e2fd6092824fe42953db7a519bbc8.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: sendzc with fixed buffersPavel Begunkov
Allow zerocopy sends to use fixed buffers. There is an optimisation for this case, the network layer don't need to reference the pages, see SKBFL_MANAGED_FRAG_REFS, so io_uring have to ensure validity of fixed buffers until the notifier is released. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/e1d8bd1b5934e541d90c1824eb4020ae3f5f43f3.1657643355.git.asml.silence@gmail.com [axboe: fold in 32-bit pointer cast warning fix] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: allow to pass addr into sendzcPavel Begunkov
Allow to specify an address to zerocopy sends making it more like sendto(2). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/70417a8f7c5b51ab454690bae08adc0c187f89e8.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: account locked pages for non-fixed zcPavel Begunkov
Fixed buffers are RLIMIT_MEMLOCK accounted, however it doesn't cover iovec based zerocopy sends. Do the accounting on the io_uring side. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/19b6e3975440f59f1f6199c7ee7acf977b4eecdc.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: wire send zc request typePavel Begunkov
Add a new io_uring opcode IORING_OP_SENDZC. The main distinction from IORING_OP_SEND is that the user should specify a notification slot index in sqe::notification_idx and the buffers are safe to reuse only when the used notification is flushed and completes. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/a80387c6a68ce9cf99b3b6ef6f71068468761fb7.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: add notification slot registrationPavel Begunkov
Let the userspace to register and unregister notification slots. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/a0aa8161fe3ebb2a4cc6e5dbd0cffb96e6881cf5.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: add rsrc referencing for notifiersPavel Begunkov
In preparation to zerocopy sends with fixed buffers make notifiers to reference the rsrc node to protect the used fixed buffers. We can't just grab it for a send request as notifiers can likely outlive requests that used it. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/3cd7a01d26837945b6982fa9cf15a63230f2ed4f.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: complete notifiers in twPavel Begunkov
We need a task context to post CQEs but using wq is too expensive. Try to complete notifiers using task_work and fall back to wq if fails. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/089799ab665b10b78fdc614ae6d59fa7ef0d5f91.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: cache struct io_notifPavel Begunkov
kmalloc'ing struct io_notif is too expensive when done frequently, cache them as many other resources in io_uring. Keep two list, the first one is from where we're getting notifiers, it's protected by ->uring_lock. The second is protected by ->completion_lock, to which we queue released notifiers. Then we splice one list into another when needed. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/9dec18f7fcbab9f4bd40b96e5ae158b119945230.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: add zc notification infrastructurePavel Begunkov
Add internal part of send zerocopy notifications. There are two main structures, the first one is struct io_notif, which carries inside struct ubuf_info and maps 1:1 to it. io_uring will be binding a number of zerocopy send requests to it and ask to complete (aka flush) it. When flushed and all attached requests and skbs complete, it'll generate one and only one CQE. There are intended to be passed into the network layer as struct msghdr::msg_ubuf. The second concept is notification slots. The userspace will be able to register an array of slots and subsequently addressing them by the index in the array. Slots are independent of each other. Each slot can have only one notifier at a time (called active notifier) but many notifiers during the lifetime. When active, a notifier not going to post any completion but the userspace can attach requests to it by specifying the corresponding slot while issueing send zc requests. Eventually, the userspace will want to "flush" the notifier losing any way to attach new requests to it, however it can use the next atomatically added notifier of this slot or of any other slot. When the network layer is done with all enqueued skbs attached to a notifier and doesn't need the specified in them user data, the flushed notifier will post a CQE. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/3ecf54c31a85762bf679b0a432c9f43ecf7e61cc.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: export io_put_task()Pavel Begunkov
Make io_put_task() available to non-core parts of io_uring, we'll need it for notification infrastructure. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/3686807d4c03b72e389947b0e8692d4d44334ef0.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24io_uring: initialise msghdr::msg_ubufPavel Begunkov
Initialise newly added ->msg_ubuf in io_recv() and io_send(). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/b8f9f263875a4a36e7f26cc5d55ebe315308f57d.1657643355.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24Merge branch 'for-5.20/io_uring' into for-5.20/io_uring-zerocopy-sendJens Axboe
* for-5.20/io_uring: (716 commits) io_uring: ensure REQ_F_ISREG is set async offload net: fix compat pointer in get_compat_msghdr() io_uring: Don't require reinitable percpu_ref io_uring: fix types in io_recvmsg_multishot_overflow io_uring: Use atomic_long_try_cmpxchg in __io_account_mem io_uring: support multishot in recvmsg net: copy from user before calling __get_compat_msghdr net: copy from user before calling __copy_msghdr io_uring: support 0 length iov in buffer select in compat io_uring: fix multishot ending when not polled io_uring: add netmsg cache io_uring: impose max limit on apoll cache io_uring: add abstraction around apoll cache io_uring: move apoll cache to poll.c io_uring: consolidate hash_locked io-wq handling io_uring: clear REQ_F_HASH_LOCKED on hash removal io_uring: don't race double poll setting REQ_F_ASYNC_DATA io_uring: don't miss setting REQ_F_DOUBLE_POLL io_uring: disable multishot recvmsg io_uring: only trace one of complete or overflow ... Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24Merge branch 'io_uring-zerocopy-send' of ↵Jens Axboe
git://git.kernel.org/pub/scm/linux/kernel/git/kuba/linux into for-5.20/io_uring-zerocopy-send Merge prep net series for io_uring tx zc from the Jakub's tree. * 'io_uring-zerocopy-send' of git://git.kernel.org/pub/scm/linux/kernel/git/kuba/linux: net: fix uninitialised msghdr->sg_from_iter tcp: support externally provided ubufs ipv6/udp: support externally provided ubufs ipv4/udp: support externally provided ubufs net: introduce __skb_fill_page_desc_noacc net: introduce managed frags infrastructure net: Allow custom iter handler in msghdr skbuff: carry external ubuf_info in msghdr skbuff: add SKBFL_DONT_ORPHAN flag skbuff: don't mix ubuf_info from different sources ipv6: avoid partial copy for zc ipv4: avoid partial copy for zc
2022-07-24mm: honor FGP_NOWAIT for page cache page allocationJens Axboe
If we're creating a page cache page with FGP_CREAT but FGP_NOWAIT is set, we should dial back the gfp flags to avoid frivolous blocking which is trivial to hit in low memory conditions: [ 10.117661] __schedule+0x8c/0x550 [ 10.118305] schedule+0x58/0xa0 [ 10.118897] schedule_timeout+0x30/0xdc [ 10.119610] __wait_for_common+0x88/0x114 [ 10.120348] wait_for_completion+0x1c/0x24 [ 10.121103] __flush_work.isra.0+0x16c/0x19c [ 10.121896] flush_work+0xc/0x14 [ 10.122496] __drain_all_pages+0x144/0x218 [ 10.123267] drain_all_pages+0x10/0x18 [ 10.123941] __alloc_pages+0x464/0x9e4 [ 10.124633] __folio_alloc+0x18/0x3c [ 10.125294] __filemap_get_folio+0x17c/0x204 [ 10.126084] iomap_write_begin+0xf8/0x428 [ 10.126829] iomap_file_buffered_write+0x144/0x24c [ 10.127710] xfs_file_buffered_write+0xe8/0x248 [ 10.128553] xfs_file_write_iter+0xa8/0x120 [ 10.129324] io_write+0x16c/0x38c [ 10.129940] io_issue_sqe+0x70/0x1cc [ 10.130617] io_queue_sqe+0x18/0xfc [ 10.131277] io_submit_sqes+0x5d4/0x600 [ 10.131946] __arm64_sys_io_uring_enter+0x224/0x600 [ 10.132752] invoke_syscall.constprop.0+0x70/0xc0 [ 10.133616] do_el0_svc+0xd0/0x118 [ 10.134238] el0_svc+0x78/0xa0 Clear IO, FS, and reclaim flags and mark the allocation as GFP_NOWAIT and add __GFP_NOWARN to avoid polluting dmesg with pointless allocations failures. A caller with FGP_NOWAIT must be expected to handle the resulting -EAGAIN return and retry from a suitable context without NOWAIT set. Reviewed-by: Shakeel Butt <shakeelb@google.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-24xfs: Add async buffered write supportStefan Roesch
This adds the async buffered write support to XFS. For async buffered write requests, the request will return -EAGAIN if the ilock cannot be obtained immediately. Signed-off-by: Stefan Roesch <shr@fb.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Link: https://lore.kernel.org/r/20220623175157.1715274-15-shr@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
generated by cgit (git 2.34.1) at 2025-10-01 11:22:47 +0000