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2017-09-15nios2: add earlycon support to 3c120 devboard DTSTobias Klauser1-1/+2
Allow earlycon to be used on the JTAG UART present in the 3c120 GHRD. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2017-09-15kvm: nVMX: Don't allow L2 to access the hardware CR8Jim Mattson1-0/+5
If L1 does not specify the "use TPR shadow" VM-execution control in vmcs12, then L0 must specify the "CR8-load exiting" and "CR8-store exiting" VM-execution controls in vmcs02. Failure to do so will give the L2 VM unrestricted read/write access to the hardware CR8. This fixes CVE-2017-12154. Signed-off-by: Jim Mattson <jmattson@google.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-15Revert "PCI: Avoid race while enabling upstream bridges"Bjorn Helgaas1-11/+2
This reverts commit 40f11adc7cd9281227f0a6a627d966dd0a5f0cd9. Jens found that iwlwifi firmware loading failed on a Lenovo X1 Carbon, gen4: iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8000C-34.ucode failed with error -2 iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8000C-33.ucode failed with error -2 iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8000C-32.ucode failed with error -2 iwlwifi 0000:04:00.0: loaded firmware version 31.532993.0 op_mode iwlmvm iwlwifi 0000:04:00.0: Detected Intel(R) Dual Band Wireless AC 8260, REV=0x208 ... iwlwifi 0000:04:00.0: Failed to load firmware chunk! iwlwifi 0000:04:00.0: Could not load the [0] uCode section iwlwifi 0000:04:00.0: Failed to start INIT ucode: -110 iwlwifi 0000:04:00.0: Failed to run INIT ucode: -110 He bisected it to 40f11adc7cd9 ("PCI: Avoid race while enabling upstream bridges"). Revert that commit to fix the regression. Link: http://lkml.kernel.org/r/4bcbcbc1-7c79-09f0-5071-bc2f53bf6574@kernel.dk Fixes: 40f11adc7cd9 ("PCI: Avoid race while enabling upstream bridges") Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Srinath Mannam <srinath.mannam@broadcom.com> CC: Jens Axboe <axboe@kernel.dk> CC: Luca Coelho <luca@coelho.fi> CC: Johannes Berg <johannes@sipsolutions.net> CC: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2017-09-15vfs: constify path argument to kernel_read_file_from_pathMimi Zohar3-3/+3
This patch constifies the path argument to kernel_read_file_from_path(). Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-15Merge tag 'nfs-for-4.14-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds7-20/+287
Pull more NFS client updates from Trond Myklebust: "Hightlights include: Bugfixes: - Various changes relating to reporting IO errors. - pnfs: Use the standard I/O stateid when calling LAYOUTGET Features: - Add static NFS I/O tracepoints for debugging" * tag 'nfs-for-4.14-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFS: various changes relating to reporting IO errors. NFS: Add static NFS I/O tracepoints pNFS: Use the standard I/O stateid when calling LAYOUTGET
2017-09-15Merge branch 'work.misc' of ↵Linus Torvalds3-16/+12
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull misc leftovers from Al Viro. * 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fix the __user misannotations in asm-generic get_user/put_user fput: Don't reinvent the wheel but use existing llist API namespace.c: Don't reinvent the wheel but use existing llist API
2017-09-15Merge branch 'work.read_write' of ↵Linus Torvalds7-22/+42
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull nowait read support from Al Viro: "Support IOCB_NOWAIT for buffered reads and block devices" * 'work.read_write' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: block_dev: support RFW_NOWAIT on block device nodes fs: support RWF_NOWAIT for buffered reads fs: support IOCB_NOWAIT in generic_file_buffered_read fs: pass iocb to do_generic_file_read
2017-09-15Merge branch 'work.mount' of ↵Linus Torvalds76-296/+314
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull mount flag updates from Al Viro: "Another chunk of fmount preparations from dhowells; only trivial conflicts for that part. It separates MS_... bits (very grotty mount(2) ABI) from the struct super_block ->s_flags (kernel-internal, only a small subset of MS_... stuff). This does *not* convert the filesystems to new constants; only the infrastructure is done here. The next step in that series is where the conflicts would be; that's the conversion of filesystems. It's purely mechanical and it's better done after the merge, so if you could run something like list=$(for i in MS_RDONLY MS_NOSUID MS_NODEV MS_NOEXEC MS_SYNCHRONOUS MS_MANDLOCK MS_DIRSYNC MS_NOATIME MS_NODIRATIME MS_SILENT MS_POSIXACL MS_KERNMOUNT MS_I_VERSION MS_LAZYTIME; do git grep -l $i fs drivers/staging/lustre drivers/mtd ipc mm include/linux; done|sort|uniq|grep -v '^fs/namespace.c$') sed -i -e 's/\<MS_RDONLY\>/SB_RDONLY/g' \ -e 's/\<MS_NOSUID\>/SB_NOSUID/g' \ -e 's/\<MS_NODEV\>/SB_NODEV/g' \ -e 's/\<MS_NOEXEC\>/SB_NOEXEC/g' \ -e 's/\<MS_SYNCHRONOUS\>/SB_SYNCHRONOUS/g' \ -e 's/\<MS_MANDLOCK\>/SB_MANDLOCK/g' \ -e 's/\<MS_DIRSYNC\>/SB_DIRSYNC/g' \ -e 's/\<MS_NOATIME\>/SB_NOATIME/g' \ -e 's/\<MS_NODIRATIME\>/SB_NODIRATIME/g' \ -e 's/\<MS_SILENT\>/SB_SILENT/g' \ -e 's/\<MS_POSIXACL\>/SB_POSIXACL/g' \ -e 's/\<MS_KERNMOUNT\>/SB_KERNMOUNT/g' \ -e 's/\<MS_I_VERSION\>/SB_I_VERSION/g' \ -e 's/\<MS_LAZYTIME\>/SB_LAZYTIME/g' \ $list and commit it with something along the lines of 'convert filesystems away from use of MS_... constants' as commit message, it would save a quite a bit of headache next cycle" * 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: VFS: Differentiate mount flags (MS_*) from internal superblock flags VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) vfs: Add sb_rdonly(sb) to query the MS_RDONLY flag on s_flags
2017-09-15Merge branch 'work.set_fs' of ↵Linus Torvalds31-236/+147
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more set_fs removal from Al Viro: "Christoph's 'use kernel_read and friends rather than open-coding set_fs()' series" * 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: unexport vfs_readv and vfs_writev fs: unexport vfs_read and vfs_write fs: unexport __vfs_read/__vfs_write lustre: switch to kernel_write gadget/f_mass_storage: stop messing with the address limit mconsole: switch to kernel_read btrfs: switch write_buf to kernel_write net/9p: switch p9_fd_read to kernel_write mm/nommu: switch do_mmap_private to kernel_read serial2002: switch serial2002_tty_write to kernel_{read/write} fs: make the buf argument to __kernel_write a void pointer fs: fix kernel_write prototype fs: fix kernel_read prototype fs: move kernel_read to fs/read_write.c fs: move kernel_write to fs/read_write.c autofs4: switch autofs4_write to __kernel_write ashmem: switch to ->read_iter
2017-09-15Merge branch 'work.ipc' of ↵Linus Torvalds19-1195/+1044
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull ipc compat cleanup and 64-bit time_t from Al Viro: "IPC copyin/copyout sanitizing, including 64bit time_t work from Deepa Dinamani" * 'work.ipc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: utimes: Make utimes y2038 safe ipc: shm: Make shmid_kernel timestamps y2038 safe ipc: sem: Make sem_array timestamps y2038 safe ipc: msg: Make msg_queue timestamps y2038 safe ipc: mqueue: Replace timespec with timespec64 ipc: Make sys_semtimedop() y2038 safe get rid of SYSVIPC_COMPAT on ia64 semtimedop(): move compat to native shmat(2): move compat to native msgrcv(2), msgsnd(2): move compat to native ipc(2): move compat to native ipc: make use of compat ipc_perm helpers semctl(): move compat to native semctl(): separate all layout-dependent copyin/copyout msgctl(): move compat to native msgctl(): split the actual work from copyin/copyout ipc: move compat shmctl to native shmctl: split the work from copyin/copyout
2017-09-15Merge branch 'zstd-minimal' of ↵Linus Torvalds39-11/+14399
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull zstd support from Chris Mason: "Nick Terrell's patch series to add zstd support to the kernel has been floating around for a while. After talking with Dave Sterba, Herbert and Phillip, we decided to send the whole thing in as one pull request. zstd is a big win in speed over zlib and in compression ratio over lzo, and the compression team here at FB has gotten great results using it in production. Nick will continue to update the kernel side with new improvements from the open source zstd userland code. Nick has a number of benchmarks for the main zstd code in his lib/zstd commit: I ran the benchmarks on a Ubuntu 14.04 VM with 2 cores and 4 GiB of RAM. The VM is running on a MacBook Pro with a 3.1 GHz Intel Core i7 processor, 16 GB of RAM, and a SSD. I benchmarked using `silesia.tar` [3], which is 211,988,480 B large. Run the following commands for the benchmark: sudo modprobe zstd_compress_test sudo mknod zstd_compress_test c 245 0 sudo cp silesia.tar zstd_compress_test The time is reported by the time of the userland `cp`. The MB/s is computed with 1,536,217,008 B / time(buffer size, hash) which includes the time to copy from userland. The Adjusted MB/s is computed with 1,536,217,088 B / (time(buffer size, hash) - time(buffer size, none)). The memory reported is the amount of memory the compressor requests. | Method | Size (B) | Time (s) | Ratio | MB/s | Adj MB/s | Mem (MB) | |----------|----------|----------|-------|---------|----------|----------| | none | 11988480 | 0.100 | 1 | 2119.88 | - | - | | zstd -1 | 73645762 | 1.044 | 2.878 | 203.05 | 224.56 | 1.23 | | zstd -3 | 66988878 | 1.761 | 3.165 | 120.38 | 127.63 | 2.47 | | zstd -5 | 65001259 | 2.563 | 3.261 | 82.71 | 86.07 | 2.86 | | zstd -10 | 60165346 | 13.242 | 3.523 | 16.01 | 16.13 | 13.22 | | zstd -15 | 58009756 | 47.601 | 3.654 | 4.45 | 4.46 | 21.61 | | zstd -19 | 54014593 | 102.835 | 3.925 | 2.06 | 2.06 | 60.15 | | zlib -1 | 77260026 | 2.895 | 2.744 | 73.23 | 75.85 | 0.27 | | zlib -3 | 72972206 | 4.116 | 2.905 | 51.50 | 52.79 | 0.27 | | zlib -6 | 68190360 | 9.633 | 3.109 | 22.01 | 22.24 | 0.27 | | zlib -9 | 67613382 | 22.554 | 3.135 | 9.40 | 9.44 | 0.27 | I benchmarked zstd decompression using the same method on the same machine. The benchmark file is located in the upstream zstd repo under `contrib/linux-kernel/zstd_decompress_test.c` [4]. The memory reported is the amount of memory required to decompress data compressed with the given compression level. If you know the maximum size of your input, you can reduce the memory usage of decompression irrespective of the compression level. | Method | Time (s) | MB/s | Adjusted MB/s | Memory (MB) | |----------|----------|---------|---------------|-------------| | none | 0.025 | 8479.54 | - | - | | zstd -1 | 0.358 | 592.15 | 636.60 | 0.84 | | zstd -3 | 0.396 | 535.32 | 571.40 | 1.46 | | zstd -5 | 0.396 | 535.32 | 571.40 | 1.46 | | zstd -10 | 0.374 | 566.81 | 607.42 | 2.51 | | zstd -15 | 0.379 | 559.34 | 598.84 | 4.61 | | zstd -19 | 0.412 | 514.54 | 547.77 | 8.80 | | zlib -1 | 0.940 | 225.52 | 231.68 | 0.04 | | zlib -3 | 0.883 | 240.08 | 247.07 | 0.04 | | zlib -6 | 0.844 | 251.17 | 258.84 | 0.04 | | zlib -9 | 0.837 | 253.27 | 287.64 | 0.04 | I ran a long series of tests and benchmarks on the btrfs side and the gains are very similar to the core benchmarks Nick ran" * 'zstd-minimal' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: squashfs: Add zstd support btrfs: Add zstd support lib: Add zstd modules lib: Add xxhash module
2017-09-15powerpc: Fix handling of alignment interrupt on dcbz instructionPaul Mackerras1-1/+1
This fixes the emulation of the dcbz instruction in the alignment interrupt handler. The error was that we were comparing just the instruction type field of op.type rather than the whole thing, and therefore the comparison "type != CACHEOP + DCBZ" was always true. Fixes: 31bfdb036f12 ("powerpc: Use instruction emulation infrastructure to handle alignment faults") Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Tested-by: Michal Sojka <sojkam1@fel.cvut.cz> Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-09-15firmware: delete in-kernel firmwareGreg Kroah-Hartman153-129170/+1
The last firmware change for the in-kernel firmware source code was back in 2013. Everyone has been relying on the out-of-tree linux-firmware package for a long long time. So let's drop it, it's baggage we don't need to keep dragging around (and having to fix random kbuild issues over time...) Cc: Kyle McMartin <kyle@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Marek <mmarek@suse.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-14Merge tag 'kbuild-v4.14' of ↵Linus Torvalds6-30/+29
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Use Make-builtin $(abspath ...) helper to get absolute path - Add W=2 extra warning option to detect unused macros - Use more KCONFIG_CONFIG instead hard-coded .config - Fix bugs of tar*-pkg targets * tag 'kbuild-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: buildtar: do not print successful message if tar returns error kbuild: buildtar: fix tar error when CONFIG_MODULES is disabled kbuild: Use KCONFIG_CONFIG in buildtar Kbuild: enable -Wunused-macros warning for "make W=2" kbuild: use $(abspath ...) instead of $(shell cd ... && /bin/pwd)
2017-09-14Merge tag 'for-4.14/dm-changes' of ↵Linus Torvalds23-167/+189
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mike Snitzer: - Some request-based DM core and DM multipath fixes and cleanups - Constify a few variables in DM core and DM integrity - Add bufio optimization and checksum failure accounting to DM integrity - Fix DM integrity to avoid checking integrity of failed reads - Fix DM integrity to use init_completion - A couple DM log-writes target fixes - Simplify DAX flushing by eliminating the unnecessary flush abstraction that was stood up for DM's use. * tag 'for-4.14/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dax: remove the pmem_dax_ops->flush abstraction dm integrity: use init_completion instead of COMPLETION_INITIALIZER_ONSTACK dm integrity: make blk_integrity_profile structure const dm integrity: do not check integrity for failed read operations dm log writes: fix >512b sectorsize support dm log writes: don't use all the cpu while waiting to log blocks dm ioctl: constify ioctl lookup table dm: constify argument arrays dm integrity: count and display checksum failures dm integrity: optimize writing dm-bufio buffers that are partially changed dm rq: do not update rq partially in each ending bio dm rq: make dm-sq requeuing behavior consistent with dm-mq behavior dm mpath: complain about unsupported __multipath_map_bio() return values dm mpath: avoid that building with W=1 causes gcc 7 to complain about fall-through
2017-09-14Merge tag 'fbdev-v4.14' of git://github.com/bzolnier/linuxLinus Torvalds94-269/+398
Pull fbdev updates from Bartlomiej Zolnierkiewicz: - make fbcon a built-time depency for fbdev (fbcon was tristate option before, now it is a bool) - this is a first step in preparations for making console_lock usage saner (currently it acts like the BKL for all things fbdev/fbcon) (Daniel Vetter) - add fbcon=margin:<color> command line option to select the fbcon margin color (David Lechner) - add DMI quirk table for x86 systems which need fbcon rotation (devices like Asus T100HA, GPD Pocket, the GPD win and the I.T.Works TW891) (Hans de Goede) - fix 1bpp logo support for unusual width (needed by LEGO MINDSTORMS EV3) (David Lechner) - enable Xilinx FB driver for ARM ZynqMP platform (Michal Simek) - fix use after free in the error path of udlfb driver (Anton Vasilyev) - fix error return code handling in pxa3xx_gcu driver (Gustavo A. R. Silva) - fix bootparams.screeninfo arguments checking in vgacon (Jan H. Schönherr) - do not leak uninitialized padding in clk to userspace in the debug code of atyfb driver (Vladis Dronov) - fix compiler warnings in fbcon code and matroxfb driver (Arnd Bergmann) - convert fbdev susbsytem to using %pOF instead of full_name (Rob Herring) - structures constifications (Arvind Yadav, Bhumika Goyal, Gustavo A. R. Silva, Julia Lawall) - misc cleanups (Gustavo A. R. Silva, Hyun Kwon, Julia Lawall, Kuninori Morimoto, Lynn Lei) * tag 'fbdev-v4.14' of git://github.com/bzolnier/linux: (75 commits) video/console: Update BIOS dates list for GPD win console rotation DMI quirk video/console: Add rotated LCD-panel DMI quirk for the VIOS LTH17 video: fbdev: sis: fix duplicated code for different branches video: fbdev: make fb_var_screeninfo const video: fbdev: aty: do not leak uninitialized padding in clk to userspace vgacon: Prevent faulty bootparams.screeninfo from causing harm video: fbdev: make fb_videomode const video/console: Add new BIOS date for GPD pocket to dmi quirk table fbcon: remove restriction on margin color video: ARM CLCD: constify amba_id video: fm2fb: constify zorro_device_id video: fbdev: annotate fb_fix_screeninfo with const and __initconst omapfb: constify omap_video_timings structures video: fbdev: udlfb: Fix use after free on dlfb_usb_probe error path fbdev: i810: make fb_ops const fbdev: matrox: make fb_ops const video: fbdev: pxa3xx_gcu: fix error return code in pxa3xx_gcu_probe() video: fbdev: Enable Xilinx FB for ZynqMP video: fbdev: Fix multiple style issues in xilinxfb video: fbdev: udlfb: constify usb_device_id. ...
2017-09-14Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds30-124/+363
Pull watchdog updates from Wim Van Sebroeck: - add support for the watchdog on Meson8 and Meson8m2 - add support for MediaTek MT7623 and MT7622 SoC - add support for the r8a77995 wdt - explicitly request exclusive reset control for asm9260_wdt, zx2967_wdt, rt2880_wdt and mt7621_wdt - improvements to asm9260_wdt, aspeed_wdt, renesas_wdt and cadence_wdt - add support for reading freq via CCF + suspend/resume support for of_xilinx_wdt - constify watchdog_ops and various device-id structures - revert of commit 1fccb73011ea ("iTCO_wdt: all versions count down twice") (Bug 196509) * git://www.linux-watchdog.org/linux-watchdog: (40 commits) watchdog: mei_wdt: constify mei_cl_device_id watchdog: sp805: constify amba_id watchdog: ziirave: constify i2c_device_id watchdog: sc1200: constify pnp_device_id dt-bindings: watchdog: renesas-wdt: Add support for the r8a77995 wdt watchdog: renesas_wdt: update copyright dates watchdog: renesas_wdt: make 'clk' a variable local to probe() watchdog: renesas_wdt: consistently use RuntimePM for clock management watchdog: aspeed: Support configuration of external signal properties dt-bindings: watchdog: aspeed: External reset signal properties drivers/watchdog: Add optional ASPEED device tree properties drivers/watchdog: ASPEED reference dev tree properties for config watchdog: da9063_wdt: Simplify by removing unneeded struct... watchdog: bcm7038: Check the return value from clk_prepare_enable() watchdog: qcom: Check for platform_get_resource() failure watchdog: of_xilinx_wdt: Add suspend/resume support watchdog: of_xilinx_wdt: Add support for reading freq via CCF dt-bindings: watchdog: mediatek: add support for MediaTek MT7623 and MT7622 SoC watchdog: max77620_wdt: constify platform_device_id watchdog: pcwd_usb: constify usb_device_id ...
2017-09-14Merge branch 'dmi-for-linus' of ↵Linus Torvalds48-52/+52
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging Pull dmi update from Jean Delvare: "Mark all struct dmi_system_id instances const" * 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: dmi: Mark all struct dmi_system_id instances const
2017-09-14Merge tag 'pinctrl-v4.14-2' of ↵Linus Torvalds6-34/+120
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control fixes from Linus Walleij: "This slew of fixes for pin control was noticed and patched up early, so to get the annoyance out of the way for -rc1 it would make sense to send them already. - Fix a build include in the Uniphier driver to keep pace with ongoing refactorings. - Fix a slew of minor semantic and syntactic issues as well as stricting up Kconfig for the new Spreadtrum driver. - Fix the GPIO interrupt set-up on the Marvell 37xx Armada as fallout for dynamically allocating irq descriptors from the core. (Also tagged for stable.) - Fix AMD register suspend/resume state spool/unspooling so that wakeup works as it should. (Also tagged for stable.)" * tag 'pinctrl-v4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl/amd: save pin registers over suspend/resume pinctrl: armada-37xx: Fix gpio interrupt setup pinctrl: sprd: fix off by one bugs pinctrl: sprd: check for allocation failure pinctrl: sprd: Restrict PINCTRL_SPRD to ARCH_SPRD or COMPILE_TEST pinctrl: sprd: fix build errors and dependencies pinctrl: sprd: make three local functions static pinctrl: uniphier: include <linux/build_bug.h> instead of <linux/bug.h>
2017-09-14Merge branch 'akpm' (patches from Andrew)Linus Torvalds44-76/+83
Merge misc fixes from Andrew Morton: "A few leftovers" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm, page_owner: skip unnecessary stack_trace entries arm64: stacktrace: avoid listing stacktrace functions in stacktrace mm: treewide: remove GFP_TEMPORARY allocation flag IB/mlx4: fix sprintf format warning fscache: fix fscache_objlist_show format processing lib/test_bitmap.c: use ULL suffix for 64-bit constants procfs: remove unused variable drivers/media/cec/cec-adap.c: fix build with gcc-4.4.4 idr: remove WARN_ON_ONCE() when trying to replace negative ID
2017-09-14orangefs: Adjust three checks for null pointersMarkus Elfring2-3/+3
MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The script “checkpatch.pl” pointed information out like the following. Comparison to NULL could be written !… Thus fix affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14orangefs: Use kcalloc() in orangefs_prepare_cdm_array()Markus Elfring1-3/+1
* A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kcalloc". This issue was detected by using the Coccinelle software. * Replace the specification of a data structure by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14orangefs: Delete error messages for a failed memory allocation in five functionsMarkus Elfring5-19/+6
Omit an extra message for a memory allocation failure in these functions. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14orangefs: constify xattr_handler structureJulia Lawall1-1/+1
The xattr_handler structure is only stored in an array of const structures. Thus the xattr_handler structure itself can be const. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14orangefs: don't call filemap_write_and_wait from fsyncJeff Layton1-4/+1
Orangefs doesn't do buffered writes yet, so there's no point in initiating and waiting for writeback. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14orangefs: off by ones in xattr size checksDan Carpenter1-3/+3
A previous patch which claimed to remove off by ones actually introduced them. strlen() returns the length of the string not including the NUL character. We are using strcpy() to copy "name" into a buffer which is ORANGEFS_MAX_XATTR_NAMELEN characters long. We should make sure to leave space for the NUL, otherwise we're writing one character beyond the end of the buffer. Fixes: e675c5ec51fe ("orangefs: clean up oversize xattr validation") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14orangefs: documentation clean upMike Marshall1-10/+4
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14orangefs: react properly to posix_acl_update_mode's aftermath.Mike Marshall1-8/+21
posix_acl_update_mode checks to see if the permissions described by the ACL can be encoded into the object's mode. If so, it sets "acl" to NULL and "mode" to the new desired value. Prior to this patch we failed to actually propagate the new mode back to the server. Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14orangefs: Don't clear SGID when inheriting ACLsJan Kara1-20/+28
When new directory 'DIR1' is created in a directory 'DIR0' with SGID bit set, DIR1 is expected to have SGID bit set (and owning group equal to the owning group of 'DIR0'). However when 'DIR0' also has some default ACLs that 'DIR1' inherits, setting these ACLs will result in SGID bit on 'DIR1' to get cleared if user is not member of the owning group. Fix the problem by creating __orangefs_set_acl() function that does not call posix_acl_update_mode() and use it when inheriting ACLs. That prevents SGID bit clearing and the mode has been properly set by posix_acl_create() anyway. Fixes: 073931017b49d9458aa351605b43a7e34598caef CC: stable@vger.kernel.org CC: Mike Marshall <hubcap@omnibond.com> CC: pvfs2-developers@beowulf-underground.org Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2017-09-14tg3: clean up redundant initialization of tnapiColin Ian King1-2/+2
tnapi is being initialized and then immediately updated and hence the initialiation is redundant. Clean up the warning by moving the declaration and initialization to the inside of the for-loop. Cleans up clang scan-build warning: warning: Value stored to 'tnapi' during its initialization is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-14sched/wait: Introduce wakeup boomark in wake_up_page_bitTim Chen3-1/+30
Now that we have added breaks in the wait queue scan and allow bookmark on scan position, we put this logic in the wake_up_page_bit function. We can have very long page wait list in large system where multiple pages share the same wait list. We break the wake up walk here to allow other cpus a chance to access the list, and not to disable the interrupts when traversing the list for too long. This reduces the interrupt and rescheduling latency, and excessive page wait queue lock hold time. [ v2: Remove bookmark_wake_function ] Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14sched/wait: Break up long wake list walkTim Chen2-15/+64
We encountered workloads that have very long wake up list on large systems. A waker takes a long time to traverse the entire wake list and execute all the wake functions. We saw page wait list that are up to 3700+ entries long in tests of large 4 and 8 socket systems. It took 0.8 sec to traverse such list during wake up. Any other CPU that contends for the list spin lock will spin for a long time. It is a result of the numa balancing migration of hot pages that are shared by many threads. Multiple CPUs waking are queued up behind the lock, and the last one queued has to wait until all CPUs did all the wakeups. The page wait list is traversed with interrupt disabled, which caused various problems. This was the original cause that triggered the NMI watch dog timer in: https://patchwork.kernel.org/patch/9800303/ . Only extending the NMI watch dog timer there helped. This patch bookmarks the waker's scan position in wake list and break the wake up walk, to allow access to the list before the waker resume its walk down the rest of the wait list. It lowers the interrupt and rescheduling latency. This patch also provides a performance boost when combined with the next patch to break up page wakeup list walk. We saw 22% improvement in the will-it-scale file pread2 test on a Xeon Phi system running 256 threads. [ v2: Merged in Linus' changes to remove the bookmark_wake_function, and simply access to flags. ] Reported-by: Kan Liang <kan.liang@intel.com> Tested-by: Kan Liang <kan.liang@intel.com> Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14tls: make tls_sw_free_resources staticTobias Klauser1-1/+1
Make the needlessly global function tls_sw_free_resources static to fix a gcc/sparse warning. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-14KVM: trace events: update list of exit reasonsLadi Prosek1-1/+3
Adding entries for exit reasons 23 - 27: KVM_EXIT_EPR KVM_EXIT_SYSTEM_EVENT KVM_EXIT_S390_STSI KVM_EXIT_IOAPIC_EOI KVM_EXIT_HYPERV Signed-off-by: Ladi Prosek <lprosek@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-09-14KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" ↵Wanpeng Li1-9/+28
exceptions simultaneously qemu-system-x86-8600 [004] d..1 7205.687530: kvm_entry: vcpu 2 qemu-system-x86-8600 [004] .... 7205.687532: kvm_exit: reason EXCEPTION_NMI rip 0xffffffffa921297d info ffffeb2c0e44e018 80000b0e qemu-system-x86-8600 [004] .... 7205.687532: kvm_page_fault: address ffffeb2c0e44e018 error_code 0 qemu-system-x86-8600 [004] .... 7205.687620: kvm_try_async_get_page: gva = 0xffffeb2c0e44e018, gfn = 0x427e4e qemu-system-x86-8600 [004] .N.. 7205.687628: kvm_async_pf_not_present: token 0x8b002 gva 0xffffeb2c0e44e018 kworker/4:2-7814 [004] .... 7205.687655: kvm_async_pf_completed: gva 0xffffeb2c0e44e018 address 0x7fcc30c4e000 qemu-system-x86-8600 [004] .... 7205.687703: kvm_async_pf_ready: token 0x8b002 gva 0xffffeb2c0e44e018 qemu-system-x86-8600 [004] d..1 7205.687711: kvm_entry: vcpu 2 After running some memory intensive workload in guest, I catch the kworker which completes the GUP too quickly, and queues an "Page Ready" #PF exception after the "Page not Present" exception before the next vmentry as the above trace which will result in #DF injected to guest. This patch fixes it by clearing the queue for "Page not Present" if "Page Ready" occurs before the next vmentry since the GUP has already got the required page and shadow page table has already been fixed by "Page Ready" handler. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Fixes: 7c90705bf2a3 ("KVM: Inject asynchronous page fault into a PV guest if page is swapped out.") [Changed indentation and added clearing of injected. - Radim] Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-09-14i2c: i2c-stm32f7: add driverPierre-Yves MORDRET3-0/+983
This patch adds initial support for the STM32F7 I2C controller. Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-14i2c: i2c-stm32f4: use generic definition of speed enumPierre-Yves MORDRET2-11/+27
This patch uses a more generic definition of speed enum for i2c-stm32f4 driver. Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Reviewed-by: Ludovic BARRE <ludovic.barre@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-14dt-bindings: i2c-stm32: Document the STM32F7 I2C bindingsPierre-Yves MORDRET1-3/+26
This patch adds the documentation of device tree bindings for STM32F7 I2C Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-09-14Merge branch 'kvm-ppc-fixes' of ↵Radim Krčmář5-6/+22
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc Bug fixes for stable.
2017-09-14KVM: X86: Don't block vCPU if there is pending exceptionWanpeng Li1-0/+3
Don't block vCPU if there is pending exception. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-09-14KVM: SVM: Add irqchip_split() checks before enabling AVICSuravee Suthikulpanit1-5/+4
SVM AVIC hardware accelerates guest write to APIC_EOI register (for edge-trigger interrupt), which means it does not trap to KVM. So, only enable SVM AVIC only in split irqchip mode. (e.g. launching qemu w/ option '-machine kernel_irqchip=split'). Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Fixes: 44a95dae1d22 ("KVM: x86: Detect and Initialize AVIC support") [Removed pr_debug - Radim.] Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-09-14dmi: Mark all struct dmi_system_id instances constChristoph Hellwig48-52/+52
... and __initconst if applicable. Based on similar work for an older kernel in the Grsecurity patch. [JD: fix toshiba-wmi build] [JD: add htcpen] [JD: move __initconst where checkscript wants it] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2017-09-14mm, page_owner: skip unnecessary stack_trace entriesPrakash Gupta1-1/+1
The page_owner stacktrace always begin as follows: [<ffffff987bfd48f4>] save_stack+0x40/0xc8 [<ffffff987bfd4da8>] __set_page_owner+0x3c/0x6c These two entries do not provide any useful information and limits the available stacktrace depth. The page_owner stacktrace was skipping caller function from stack entries but this was missed with commit f2ca0b557107 ("mm/page_owner: use stackdepot to store stacktrace") Example page_owner entry after the patch: Page allocated via order 0, mask 0x8(ffffff80085fb714) PFN 654411 type Movable Block 639 type CMA Flags 0x0(ffffffbe5c7f12c0) [<ffffff9b64989c14>] post_alloc_hook+0x70/0x80 ... [<ffffff9b651216e8>] msm_comm_try_state+0x5f8/0x14f4 [<ffffff9b6512486c>] msm_vidc_open+0x5e4/0x7d0 [<ffffff9b65113674>] msm_v4l2_open+0xa8/0x224 Link: http://lkml.kernel.org/r/1504078343-28754-2-git-send-email-guptap@codeaurora.org Fixes: f2ca0b557107 ("mm/page_owner: use stackdepot to store stacktrace") Signed-off-by: Prakash Gupta <guptap@codeaurora.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14arm64: stacktrace: avoid listing stacktrace functions in stacktracePrakash Gupta1-5/+13
The stacktraces always begin as follows: [<c00117b4>] save_stack_trace_tsk+0x0/0x98 [<c0011870>] save_stack_trace+0x24/0x28 ... This is because the stack trace code includes the stack frames for itself. This is incorrect behaviour, and also leads to "skip" doing the wrong thing (which is the number of stack frames to avoid recording.) Perversely, it does the right thing when passed a non-current thread. Fix this by ensuring that we have a known constant number of frames above the main stack trace function, and always skip these. This was fixed for arch arm by commit 3683f44c42e9 ("ARM: stacktrace: avoid listing stacktrace functions in stacktrace") Link: http://lkml.kernel.org/r/1504078343-28754-1-git-send-email-guptap@codeaurora.org Signed-off-by: Prakash Gupta <guptap@codeaurora.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Michal Hocko <mhocko@suse.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Will Deacon <will.deacon@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14mm: treewide: remove GFP_TEMPORARY allocation flagMichal Hocko36-61/+57
GFP_TEMPORARY was introduced by commit e12ba74d8ff3 ("Group short-lived and reclaimable kernel allocations") along with __GFP_RECLAIMABLE. It's primary motivation was to allow users to tell that an allocation is short lived and so the allocator can try to place such allocations close together and prevent long term fragmentation. As much as this sounds like a reasonable semantic it becomes much less clear when to use the highlevel GFP_TEMPORARY allocation flag. How long is temporary? Can the context holding that memory sleep? Can it take locks? It seems there is no good answer for those questions. The current implementation of GFP_TEMPORARY is basically GFP_KERNEL | __GFP_RECLAIMABLE which in itself is tricky because basically none of the existing caller provide a way to reclaim the allocated memory. So this is rather misleading and hard to evaluate for any benefits. I have checked some random users and none of them has added the flag with a specific justification. I suspect most of them just copied from other existing users and others just thought it might be a good idea to use without any measuring. This suggests that GFP_TEMPORARY just motivates for cargo cult usage without any reasoning. I believe that our gfp flags are quite complex already and especially those with highlevel semantic should be clearly defined to prevent from confusion and abuse. Therefore I propose dropping GFP_TEMPORARY and replace all existing users to simply use GFP_KERNEL. Please note that SLAB users with shrinkers will still get __GFP_RECLAIMABLE heuristic and so they will be placed properly for memory fragmentation prevention. I can see reasons we might want some gfp flag to reflect shorterm allocations but I propose starting from a clear semantic definition and only then add users with proper justification. This was been brought up before LSF this year by Matthew [1] and it turned out that GFP_TEMPORARY really doesn't have a clear semantic. It seems to be a heuristic without any measured advantage for most (if not all) its current users. The follow up discussion has revealed that opinions on what might be temporary allocation differ a lot between developers. So rather than trying to tweak existing users into a semantic which they haven't expected I propose to simply remove the flag and start from scratch if we really need a semantic for short term allocations. [1] http://lkml.kernel.org/r/20170118054945.GD18349@bombadil.infradead.org [akpm@linux-foundation.org: fix typo] [akpm@linux-foundation.org: coding-style fixes] [sfr@canb.auug.org.au: drm/i915: fix up] Link: http://lkml.kernel.org/r/20170816144703.378d4f4d@canb.auug.org.au Link: http://lkml.kernel.org/r/20170728091904.14627-1-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Mel Gorman <mgorman@suse.de> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Matthew Wilcox <willy@infradead.org> Cc: Neil Brown <neilb@suse.de> Cc: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14IB/mlx4: fix sprintf format warningArnd Bergmann1-1/+1
gcc-7 points out that a negative port_num value would overflow the string buffer: drivers/infiniband/hw/mlx4/sysfs.c: In function 'mlx4_ib_device_register_sysfs': drivers/infiniband/hw/mlx4/sysfs.c:251:16: error: 'sprintf' may write a terminating nul past the end of the destination [-Werror=format-overflow=] drivers/infiniband/hw/mlx4/sysfs.c:251:2: note: 'sprintf' output between 2 and 11 bytes into a destination of size 10 drivers/infiniband/hw/mlx4/sysfs.c:303:17: error: 'sprintf' may write a terminating nul past the end of the destination [-Werror=format-overflow=] drivers/infiniband/hw/mlx4/sysfs.c:303:3: note: 'sprintf' output between 2 and 11 bytes into a destination of size 10 While we should be able to assume that port_num is positive here, making the buffer one byte longer has no downsides and avoids the warning. Fixes: c1e7e466120b ("IB/mlx4: Add iov directory in sysfs under the ib device") Link: http://lkml.kernel.org/r/20170714120720.906842-23-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14fscache: fix fscache_objlist_show format processingArnd Bergmann1-1/+2
gcc points out a minor bug in the handling of unknown cookie types, which could result in a string overflow when the integer is copied into a 3-byte string: fs/fscache/object-list.c: In function 'fscache_objlist_show': fs/fscache/object-list.c:265:19: error: 'sprintf' may write a terminating nul past the end of the destination [-Werror=format-overflow=] sprintf(_type, "%02u", cookie->def->type); ^~~~~~ fs/fscache/object-list.c:265:4: note: 'sprintf' output between 3 and 4 bytes into a destination of size 3 This is currently harmless as no code sets a type other than 0 or 1, but it makes sense to use snprintf() here to avoid overflowing the array if that changes. Link: http://lkml.kernel.org/r/20170714120720.906842-22-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14lib/test_bitmap.c: use ULL suffix for 64-bit constantsGeert Uytterhoeven1-4/+4
With gcc 4.1.2: lib/test_bitmap.c:189: warning: integer constant is too large for `long' type lib/test_bitmap.c:190: warning: integer constant is too large for `long' type lib/test_bitmap.c:194: warning: integer constant is too large for `long' type lib/test_bitmap.c:195: warning: integer constant is too large for `long' type Add the missing "ULL" suffix to fix this. Link: http://lkml.kernel.org/r/1505040523-31230-1-git-send-email-geert@linux-m68k.org Fixes: 60ef690018b262dd ("bitmap: introduce BITMAP_FROM_U64()") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Yury Norov <ynorov@caviumnetworks.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14procfs: remove unused variableArnd Bergmann1-1/+0
In NOMMU configurations, we get a warning about a variable that has become unused: fs/proc/task_nommu.c: In function 'nommu_vma_show': fs/proc/task_nommu.c:148:28: error: unused variable 'priv' [-Werror=unused-variable] Link: http://lkml.kernel.org/r/20170911200231.3171415-1-arnd@arndb.de Fixes: 1240ea0dc3bb ("fs, proc: remove priv argument from is_stack") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-14drivers/media/cec/cec-adap.c: fix build with gcc-4.4.4Andrew Morton1-1/+4
gcc-4.4.4 has issues with initialization of anonymous unions: drivers/media/cec/cec-adap.c: In function 'cec_queue_msg_fh': drivers/media/cec/cec-adap.c:184: error: unknown field 'lost_msgs' specified in initializer work around this. Fixes: 6b2bbb08747a5 ("media: cec: rework the cec event handling") Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hans Verkuil <hans.verkuil@cisco.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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