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2015-07-03KVM: x86: make vapics_in_nmi_mode atomicRadim Krčmář
Writes were a bit racy, but hard to turn into a bug at the same time. (Particularly because modern Linux doesn't use this feature anymore.) Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> [Actually the next patch makes it much, much easier to trigger the race so I'm including this one for stable@ as well. - Paolo] Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-03sched, preempt_notifier: separate notifier registration from static_key inc/decPeter Zijlstra
Commit 1cde2930e154 ("sched/preempt: Add static_key() to preempt_notifiers") had two problems. First, the preempt-notifier API needs to sleep with the addition of the static_key, we do however need to hold off preemption while modifying the preempt notifier list, otherwise a preemption could observe an inconsistent list state. KVM correctly registers and unregisters preempt notifiers with preemption disabled, so the sleep caused dmesg splats. Second, KVM registers and unregisters preemption notifiers very often (in vcpu_load/vcpu_put). With a single uniprocessor guest the static key would move between 0 and 1 continuously, hitting the slow path on every userspace exit. To fix this, wrap the static_key inc/dec in a new API, and call it from KVM. Fixes: 1cde2930e154 ("sched/preempt: Add static_key() to preempt_notifiers") Reported-by: Pontus Fuchs <pontus.fuchs@gmail.com> Reported-by: Takashi Iwai <tiwai@suse.de> Tested-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-03ARM: pgtable: document mapping typesRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-07-03ARM: io: convert ioremap*() to functionsRussell King
Convert the ioremap*() preprocessor macros to real functions, moving them out of line. This allows us to kill off __arm_ioremap(), and __arm_iounmap() helpers, and remove __arm_ioremap_pfn_caller() from global view. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-07-03arm64: Fix show_unhandled_signal_ratelimited usageSuzuki K. Poulose
Commit 86dca36e6ba introduced ratelimited usage for 'unhandled_signal' messages. The commit checks the ratelimit irrespective of whether the signal is handled or not, which is wrong and leads to false reports like the below in dmesg : __do_user_fault: 127 callbacks suppressed Do the ratelimit check only if the signal is unhandled. Fixes: 86dca36e6ba0 ("arm64: use private ratelimit state along with show_unhandled_signals") Cc: Vladimir Murzin <Vladimir.Murzin@arm.com> Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-07-03ARM: io: fix ioremap_wt() implementationRussell King
ioremap_wt() was added by aliasing it to ioremap_nocache(), which is a device mapping. Device mappings do not allow unaligned accesses, but it appears that GCC is able to inline its own memcpy() implementation which may use such accesses. The only user of this is pmem, which uses memcpy() on the region. Therefore, this is unsafe. We must implement ioremap_wt() correctly for ARM, or not at all. This patch adds a more correct implementation by re-using ioremap_wc() to provide a normal-memory non-cacheable mapping. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-07-03ARM: io: document ARM specific behaviour of ioremap*() implementationsRussell King
Add documentation of the ARM specific behaviour of the mappings setup by the ioremap() series of macros. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-07-03hwmon: (w83627ehf) Use swap() in w82627ehf_swap_tempreg()Fabian Frederick
Use kernel.h macro definition. Thanks to Julia Lawall for Coccinelle scripting support. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2015-07-03hwmon: Document which I2C addresses can be probedJean Delvare
Add an item to the checklist when submitting a new hwmon driver: only some I2C addresses can be probed, others should not for safety reasons. Signed-off-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
2015-07-03hwmon: (w83792d) Additional PWM outputs supportRoger Lucas
Add pwm[4-7] and the associated pwm[4-7]_mode attributes. Signed-off-by: Roger Lucas <vt8231@hiddenengine.co.uk> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2015-07-03ARM: fix lockdep unannotated irqs-off warningRussell King
Wolfram Sang reported an unannotated irqs-off warning from lockdep: WARNING: CPU: 0 PID: 282 at kernel/locking/lockdep.c:3557 check_flags+0x84/0x1f4() DEBUG_LOCKS_WARN_ON(current->hardirqs_enabled) CPU: 0 PID: 282 Comm: rcS Tainted: G W 4.1.0-00002-g5b076054611833 #179 Hardware name: Generic Emma Mobile EV2 (Flattened Device Tree) Backtrace: [<c0012c94>] (dump_backtrace) from [<c0012e3c>] (show_stack+0x18/0x1c) r6:c02dcc67 r5:00000009 r4:00000000 r3:00400000 [<c0012e24>] (show_stack) from [<c02510c8>] (dump_stack+0x20/0x28) [<c02510a8>] (dump_stack) from [<c0022c44>] (warn_slowpath_common+0x8c/0xb4) [<c0022bb8>] (warn_slowpath_common) from [<c0022cd8>] (warn_slowpath_fmt+0x38/0x40) r8:c780f470 r7:00000000 r6:00000000 r5:c03b0570 r4:c0b7ec04 [<c0022ca4>] (warn_slowpath_fmt) from [<c004cd38>] (check_flags+0x84/0x1f4) r3:c02e13d8 r2:c02dceaa [<c004ccb4>] (check_flags) from [<c0050e50>] (lock_acquire+0x4c/0xbc) r5:00000000 r4:60000193 [<c0050e04>] (lock_acquire) from [<c0256000>] (_raw_spin_lock+0x34/0x44) r9:000a8d5c r8:00000001 r7:c7806000 r6:c780f460 r5:c03b06a0 r4:c780f460 [<c0255fcc>] (_raw_spin_lock) from [<c005a8cc>] (handle_fasteoi_irq+0x20/0x11c) r4:c780f400 [<c005a8ac>] (handle_fasteoi_irq) from [<c0057a4c>] (generic_handle_irq+0x28/0x38) r6:00000000 r5:c03b038c r4:00000012 r3:c005a8ac [<c0057a24>] (generic_handle_irq) from [<c0057ae4>] (__handle_domain_irq+0x88/0xa8) r4:00000000 r3:00000026 [<c0057a5c>] (__handle_domain_irq) from [<c000a3cc>] (gic_handle_irq+0x40/0x58) r8:10c5347d r7:10c5347d r6:c35b1fb0 r5:c03a6304 r4:c8802000 r3:c35b1fb0 [<c000a38c>] (gic_handle_irq) from [<c0013bc8>] (__irq_usr+0x48/0x60) Exception stack(0xc35b1fb0 to 0xc35b1ff8) 1fa0: 00000061 00000000 000ab736 00000066 1fc0: 00000061 000aa1f0 000a8d54 000a8d54 000a8d88 000a8d5c 000a8cc8 000a8d68 1fe0: 72727272 bef8a528 000398c0 00031334 20000010 ffffffff r6:ffffffff r5:20000010 r4:00031334 r3:00000061 ---[ end trace cb88537fdc8fa202 ]--- possible reason: unannotated irqs-off. irq event stamp: 769 hardirqs last enabled at (769): [<c000f82c>] ret_fast_syscall+0x2c/0x54 hardirqs last disabled at (768): [<c000f80c>] ret_fast_syscall+0xc/0x54 softirqs last enabled at (0): [<c0020ec4>] copy_process.part.65+0x2e8/0x11dc softirqs last disabled at (0): [< (null)>] (null) His kernel configuration had: CONFIG_PROVE_LOCKING=y CONFIG_TRACE_IRQFLAGS=y but no IRQSOFF_TRACER, which means entry from userspace can result in the kernel seeing IRQs off without being notified of that change of state. Change the IRQSOFF ifdef in the usr_entry macro to TRACE_IRQFLAGS instead. Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-07-03ARM64 / SMP: Switch pr_err() to pr_debug() for disabled GICC entryHanjun Guo
It is normal that firmware presents GICC entry or entries (processors) with disabled flag in ACPI MADT, taking a system of 16 cpus for example, ACPI firmware may present 8 ebabled first with another 8 cpus disabled in MADT, the disabled cpus can be hot-added later. Firmware may also present more cpus than the hardware actually has, but disabled the unused ones, and easily enable it when the hardware has such cpus to make the firmware code scalable. So that's not an error for disabled cpus in MADT, we can switch pr_err() to pr_debug() to make the boot a little quieter by default. Since hwid for disabled cpus often are invalid, and we check invalid hwid first in the code, for use case that hot add cpus later will be filtered out and will not be counted in possible cups, so move this check before the hwid one to prepare the code to count for disabeld cpus when cpu hot-plug is introduced. Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Reviewed-by: Al Stone <ahs3@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-07-03ARM: 8397/1: fix vdsomunge not to depend on glibc specific error.hSzabolcs Nagy
If the host toolchain is not glibc based then the arm kernel build fails with arch/arm/vdso/vdsomunge.c:53:19: fatal error: error.h: No such file or directory error.h is a glibc only header (ie not available in musl, newlib and bsd libcs). Changed the error reporting to standard conforming code to avoid depending on specific C implementations. Signed-off-by: Szabolcs Nagy <szabolcs.nagy@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Fixes: 8512287a8165 ("ARM: 8330/1: add VDSO user-space code") Cc: stable@vger.kernel.org Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-07-02Merge tag 'acpica-4.2-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPICA updates from Rafael Wysocki: "Additional ACPICA material for v4.2-rc1 This will update the ACPICA code in the kernel to upstream revision 20150619 (a bug-fix release mostly including stable-candidate fixes) and restore an earlier ACPICA commit that had to be reverted due to a regression introduced by it (the regression is addressed by blacklisting the only known system affected by it to date). The only new feature added by this update is the support for overriding objects in the ACPI namespace and a new ACPI table that can be used for that called the Override System Definition Table (OSDT). That should allow us to "patch" the ACPI namespace built from incomplete or incorrect ACPI System Definition tables (DSDT, SSDT) during system startup without the need to provide replacements for all of those tables in the future. Specifics: - Fix system resume problems related to 32-bit and 64-bit versions of the Firmware ACPI Control Structure (FACS) in the firmare (Lv Zheng) - Fix double initialization of the FACS (Lv Zheng) - Add _CLS object processing code to ACPICA (Suravee Suthikulpanit) - Add support for the (currently missing) new GIC version field in the Multiple APIC Description Table (MADT) (Hanjun Guo) - Add support for overriding objects in the ACPI namespace to ACPICA and OSDT support (Lv Zheng, Bob Moore, Zhang Rui) - Updates related to the TCPA and TPM2 ACPI tables (Bob Moore) - Restore the commit modifying _REV to always return "2" (as required by ACPI 6) and add a blacklisting mechanism for systems that may be affected by that change (Rafael J Wysocki) - Assorted fixes and cleanups (Bob Moore, Lv Zheng, Sascha Wildner)" * tag 'acpica-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (28 commits) Revert 'Revert "ACPICA: Permanently set _REV to the value '2'."' ACPI / init: Make it possible to override _REV ACPICA: Update version to 20150619 ACPICA: Comment update, no functional change ACPICA: Update TPM2 ACPI table ACPICA: Update definitions for the TCPA and TPM2 ACPI tables ACPICA: Split C library prototypes to new header ACPICA: De-macroize calls to standard C library functions ACPI / acpidump: Update acpidump manual ACPICA: acpidump: Convert the default behavior to dump from /sys/firmware/acpi/tables ACPICA: acpidump: Allow customized tables to be dumped without accessing /dev/mem ACPICA: Cleanup output for the ASL Debug object ACPICA: Update for acpi_install_table memory types ACPICA: Namespace: Change namespace override to avoid node deletion ACPICA: Namespace: Add support of OSDT table ACPICA: Namespace: Add support to allow overriding objects ACPICA: ACPI 6.0: Add values for MADT GIC version field ACPICA: Utilities: Add _CLS processing ACPICA: Add dragon_fly support to unix file mapping file ACPICA: EFI: Add EFI interface definitions to eliminate dependency of GNU EFI ...
2015-07-02make certificate list change message more usefulLinus Torvalds
It's a bug in our Makefile rules, make it show what the changing certificate list was, and make it a warning so that people actually see it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-07-03Revert 'Revert "ACPICA: Permanently set _REV to the value '2'."'Rafael J. Wysocki
Revert commit ff284f37fc0e (Revert "ACPICA: Permanently set _REV to the value '2'.) as the regression introduced by commit b1ef29725865 reverted by it is now addressed via a blacklist entry. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-03ACPI / init: Make it possible to override _REVRafael J. Wysocki
The platform firmware on some systems expects Linux to return "5" as the supported ACPI revision which makes it expose system configuration information in a special way. For example, based on what ACPI exports as the supported revision, Dell XPS 13 (2015) configures its audio device to either work in HDA mode or in I2S mode, where the former is supposed to be used on Linux until the latter is fully supported (in the kernel as well as in user space). Since ACPI 6 mandates that _REV should return "2" if ACPI 2 or later is supported by the OS, a subsequent change will make that happen, so make it possible to override that on systems where "5" is expected to be returned for Linux to work correctly one them (such as the Dell machine mentioned above). Original-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-02Merge branch 'kbuild' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kbuild updates from Michal Marek: "Just a few kbuild core commits this time: - kallsyms fix for CONFIG_XIP_KERNEL - bashisms in scripts/link-vmlinux.sh fixed - workaround to make DEBUG_INFO_REDUCED more useful yet still space efficient - clang is not wrongly detected when cross-compiling" * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: include core debug info when DEBUG_INFO_REDUCED scripts: link-vmlinux: Don't pass page offset to kallsyms if XIP Kernel scripts: fix link-vmlinux.sh bash-ism Makefile: Fix detection of clang when cross-compiling
2015-07-02Merge branch 'kconfig' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild Pull kconfig updates from Michal Marek: - kconfig conditions can use usual less/greater than comparisons - kconfig warns about stray characters in Kconfig files - bogus expression simplification removed - some minor fixes * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kconfig: re-generate *.c_shipped files after previous change kconfig: allow use of relations other than (in)equality kconfig: don't silently ignore unhandled characters kconfig: Wrap long "make help" text lines scripts/kconfig/Makefile: Cosmetic fixes scripts/kconfig/Makefile: Fix spelling of Qt Kconfig: Remove bad inference rules expr_eliminate_dups2()
2015-07-02Merge tag 'hwmon-for-linus-v4.2-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: "Two patches headed for stable: - Fix broken output scaling in mcp3021 driver - Fix attribute visibility in nct7802 driver One regression: - Fix name attribute in dell-smm-hwmon driver" * tag 'hwmon-for-linus-v4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (mcp3021) Fix broken output scaling hwmon: (nct7802) fix visibility of temp3 hwmon: (dell-smm-hwmon) Use a valid name attribute
2015-07-02Merge tag 'please-pull-put_kernel_page' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull ia64 boot noise reduction fix from Tony Luck: "Remove some boot noise from a now-invalid check that pages are reserved" * tag 'please-pull-put_kernel_page' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: [IA64] Drop debug test/printk that some special pages are marked reserved
2015-07-02Merge tag 'armsoc-late' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC late fixes and dependencies from Kevin Hilman: "This is a collection of a few late fixes and other misc stuff that had dependencies on things being merged from other trees. Other than the fixes, the primary feature being added is the conversion of some OMAP drivers to the new generic wakeirq interface" * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: multi_v7_defconfig: Enable BRCMNAND driver ARM: BCM: Do not select CONFIG_MTD_NAND_BRCMNAND ARM: at91/dt: update udc compatible strings ARM: at91/dt: trivial: fix USB udc compatible string arm64: dts: Add APM X-Gene standby GPIO controller DTS entries soc: qcom: spm: Fix idle on THUMB2 kernels ARM: dove: fix legacy dove IRQ numbers ARM: mvebu: fix suspend to RAM on big-endian configurations ARM: mvebu: adjust Armada XP DT spi muxing after pinctrl function rename serial: 8250_omap: Move wake-up interrupt to generic wakeirq serial: omap: Switch wake-up interrupt to generic wakeirq mmc: omap_hsmmc: Change wake-up interrupt to use generic wakeirq
2015-07-02Merge branch 'drm-next-4.2' of git://people.freedesktop.org/~agd5f/linuxLinus Torvalds
Pull radeon and amdgpu fixes from Alex Deucher: "First round of fixes for 4.2 for radeon and amdgpu. Stuff all over the place: - hibernation, suspend fixes for radeon and amdgpu - radeon audio fix - amdgpu ioctl optimzations and fixes - amdgpu VCE cs checker improvements - misc bug fixes" [ Dave on vacation, pulling directly ] * 'drm-next-4.2' of git://people.freedesktop.org/~agd5f/linux: (30 commits) drm/radeon: only check the sink type on DP connectors drm/amdgpu: add flag to delay VM updates drm/amdgpu: add optional dependencies to the CS IOCTL v2 drm/amdgpu: recreate fence from user seq gpu/drm/amdgpu: Fix build when CONFIG_DEBUG_FS is not set Revert "drm/radeon: dont switch vt on suspend" drm/amdgpu: disable enable_nb_ps_policy temporarily drm/amdgpu: correct define SMU_EnabledFeatureScoreboard_SclkDpmOn drm/amdgpu: allocate ip_block_enabled memory in common code drm/amdgpu: remove unnecessary check before kfree drm/amdgpu: use kzalloc for allocating one thing drm/radeon: fix adding all VAs to the freed list on remove v2 drm/amdgpu: add chunk id validity check drm/amdgpu: fix crash on invalid CS IOCTL drm/amdgpu: reset wptr at cp compute resume (v2) drm/amdgpu: check VCE feedback and bitstream index drm/amdgpu: make VCE handle check more strict drm/amdgpu: check VCE relocation buffer range drm/amdgpu: silence invalid error message drm/amdgpu: fix wrong type ...
2015-07-02Merge tag 'drm-intel-next-fixes-2015-07-02' of ↵Linus Torvalds
git://anongit.freedesktop.org/drm-intel Pull intel drm fixes from Jani Nikula: "Almost all of it is regression fixes all around, with cc: stable, and then there's Ander's fix for one of the warnings you reported. We're still working on the rest" [ Dave is on vacation, and Jani is heading out on vacation too ] * tag 'drm-intel-next-fixes-2015-07-02' of git://anongit.freedesktop.org/drm-intel: drm/i915: Clear pipe's pll hw state in hsw_dp_set_ddi_pll_sel() drm/i915: fix backlight after resume on 855gm agp/intel: Fix typo in needs_ilk_vtd_wa() drm/i915/ppgtt: Break loop in gen8_ppgtt_clear_range failure path drm/i915: Fix IPS related flicker
2015-07-02[IA64] Drop debug test/printk that some special pages are marked reservedTony Luck
In commit 92923ca3aace "mm: meminit: only set page reserved in the memblock region" we dropped setting the reserved bits for all pages. This results in some warnings on ia64: put_kernel_page: page at 0xe000000005588000 not in reserved memory put_kernel_page: page at 0xe000000005588000 not in reserved memory put_kernel_page: page at 0xe000000005580000 not in reserved memory put_kernel_page: page at 0xe000000005580000 not in reserved memory put_kernel_page: page at 0xe000000005580000 not in reserved memory put_kernel_page: page at 0xe000000005580000 not in reserved memory the two different pages match up with two objects from the loaded kernel that get mapped by arch/ia64/mm/init.c:setup_gate() a000000101588000 D __start_gate_section a000000101580000 D empty_zero_page In a discussion with Mel Gorman: http://lkml.kernel.org/r/20150526102219.GB13750%40suse.de he suggested that while the preferred approach might be to set the reserved bit for these pages, it would also be OK to just drop the test: "as it's a debugging check that is ia-64 specific" After hunting around a bit and failin to find a good place to mark these pages as reserved - I decided to just delete the test. Signed-off-by: Tony Luck <tony.luck@intel.com>
2015-07-02irqchip: Move IRQCHIP_DECLARE macro to include/linux/irqchip.hJoel Porquet
At the moment the IRQCHIP_DECLARE macro is only declared locally in drivers/irqchip/irqchip.h. It prevents from using it directly in arch/* directories whenever irqchip drivers only exist there, which happens in a few cases (e.g. arc, arm, microblaze and mips). This patch makes the macro to be globally defined, i.e. in include/linux/irqchip.h, and thus usable for arch-specific declarations of irqchip drivers. In this way, it is very similar to what clocksource does (ie CLOCKSOURCE_OF_DECLARE is defined in include/linux/clocksource.h). For now, this patch only moves the declaration of the macro IRQCHIP_DECLARE to the global header 'include/linux/irqchip.h' and make 'drivers/irqchip/irqchip.h' include 'include/linux/irqchip.h'. Later, other patches will get rid of 'drivers/irqchip/irqchip.h' and modify all the impacted irqchip drivers. Signed-off-by: Joel Porquet <joel@porquet.org> Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1435865565-14114-1-git-send-email-joel@porquet.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-07-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "We have a pile of bug fixes from Ilya, including a few patches that sync up the CRUSH code with the latest from userspace. There is also a long series from Zheng that fixes various issues with snapshots, inline data, and directory fsync, some simplification and improvement in the cap release code, and a rework of the caching of directory contents. To top it off there are a few small fixes and cleanups from Benoit and Hong" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (40 commits) rbd: use GFP_NOIO in rbd_obj_request_create() crush: fix a bug in tree bucket decode libceph: Fix ceph_tcp_sendpage()'s more boolean usage libceph: Remove spurious kunmap() of the zero page rbd: queue_depth map option rbd: store rbd_options in rbd_device rbd: terminate rbd_opts_tokens with Opt_err ceph: fix ceph_writepages_start() rbd: bump queue_max_segments ceph: rework dcache readdir crush: sync up with userspace crush: fix crash from invalid 'take' argument ceph: switch some GFP_NOFS memory allocation to GFP_KERNEL ceph: pre-allocate data structure that tracks caps flushing ceph: re-send flushing caps (which are revoked) in reconnect stage ceph: send TID of the oldest pending caps flush to MDS ceph: track pending caps flushing globally ceph: track pending caps flushing accurately libceph: fix wrong name "Ceph filesystem for Linux" ceph: fix directory fsync ...
2015-07-02Merge tag 'nfs-for-4.2-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds
Pull NFS client updates from Trond Myklebust: "Highlights include: Stable patches: - Fix a crash in the NFSv4 file locking code. - Fix an fsync() regression, where we were failing to retry I/O in some circumstances. - Fix an infinite loop in NFSv4.0 OPEN stateid recovery - Fix a memory leak when an attempted pnfs fails. - Fix a memory leak in the backchannel code - Large hostnames were not supported correctly in NFSv4.1 - Fix a pNFS/flexfiles bug that was impeding error reporting on I/O. - Fix a couple of credential issues in pNFS/flexfiles Bugfixes + cleanups: - Open flag sanity checks in the NFSv4 atomic open codepath - More NFSv4 delegation related bugfixes - Various NFSv4.1 backchannel bugfixes and cleanups - Fix the NFS swap socket code - Various cleanups of the NFSv4 SETCLIENTID and EXCHANGE_ID code - Fix a UDP transport deadlock issue Features: - More RDMA client transport improvements - NFSv4.2 LAYOUTSTATS functionality for pnfs flexfiles" * tag 'nfs-for-4.2-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (87 commits) nfs: Remove invalid tk_pid from debug message nfs: Remove invalid NFS_ATTR_FATTR_V4_REFERRAL checking in nfs4_get_rootfh nfs: Drop bad comment in nfs41_walk_client_list() nfs: Remove unneeded micro checking of CONFIG_PROC_FS nfs: Don't setting FILE_CREATED flags always nfs: Use remove_proc_subtree() instead remove_proc_entry() nfs: Remove unused argument in nfs_server_set_fsinfo() nfs: Fix a memory leak when meeting an unsupported state protect nfs: take extra reference to fl->fl_file when running a LOCKU operation NFSv4: When returning a delegation, don't reclaim an incompatible open mode. NFSv4.2: LAYOUTSTATS is optional to implement NFSv4.2: Fix up a decoding error in layoutstats pNFS/flexfiles: Fix the reset of struct pgio_header when resending pNFS/flexfiles: Turn off layoutcommit for servers that don't need it pnfs/flexfiles: protect ktime manipulation with mirror lock nfs: provide pnfs_report_layoutstat when NFS42 is disabled nfs: verify open flags before allowing open nfs: always update creds in mirror, even when we have an already connected ds nfs: fix potential credential leak in ff_layout_update_mirror_cred pnfs/flexfiles: report layoutstat regularly ...
2015-07-02Merge branch 'overlayfs-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull overlayfs updates from Miklos Szeredi: "This relaxes the requirements on the lower layer filesystem: now ones that implement .d_revalidate, such as NFS, can be used. Upper layer filesystems still has the "no .d_revalidate" requirement. Also a bad interaction with jffs2 locking has been fixed" * 'overlayfs-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: lookup whiteouts outside iterate_dir() ovl: allow distributed fs as lower layer ovl: don't traverse automount points
2015-07-02Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse updates from Miklos Szeredi: "This is the start of improving fuse scalability. An input queue and a processing queue is split out from the monolithic fuse connection, each of those having their own spinlock. The end of the patchset adds the ability to clone a fuse connection. This means, that instead of having to read/write requests/answers on a single fuse device fd, the fuse daemon can have multiple distinct file descriptors open. Each of those can be used to receive requests and send answers, currently the only constraint is that a request must be answered on the same fd as it was read from. This can be extended further to allow binding a device clone to a specific CPU or NUMA node. Based on a patchset by Srinivas Eeda and Ashish Samant. Thanks to Ashish for the review of this series" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (40 commits) fuse: update MAINTAINERS entry fuse: separate pqueue for clones fuse: introduce per-instance fuse_dev structure fuse: device fd clone fuse: abort: no fc->lock needed for request ending fuse: no fc->lock for pqueue parts fuse: no fc->lock in request_end() fuse: cleanup request_end() fuse: request_end(): do once fuse: add req flag for private list fuse: pqueue locking fuse: abort: group pqueue accesses fuse: cleanup fuse_dev_do_read() fuse: move list_del_init() from request_end() into callers fuse: duplicate ->connected in pqueue fuse: separate out processing queue fuse: simplify request_wait() fuse: no fc->lock for iqueue parts fuse: allow interrupt queuing without fc->lock fuse: iqueue locking ...
2015-07-02Merge tag 'module-misc-v4.1-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull init.h/module.h fragility fixes from Paul Gortmaker: "Fixup various init.h misuses that are fragile wrt code moving to module.h What started as a removal of no longer required include <linux/init.h> due to the earlier __cpuinit and __devinit removal led to the observation that some module specfic support was living in init.h itself, thus preventing the full removal from introducing compile regressions. This series includes a few final fixups needed prior to the relocation of the modular init code from <init.h> to <module.h>. These are things that weren't easily categorized into any of the other previous series categories already requested for pull. That said, each fixup branch (including this one) is independent and there are no ordering constraints. Only the final code relocation (which is NOT in this pull) requires that all my cleanup branches be merged first" * tag 'module-misc-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: tile: add init.h to usb.c to avoid compile failure arm: fix implicit #include <linux/init.h> in entry asm. x86: replace __init_or_module with __init in non-modular vsmp_64.c
2015-07-02Merge tag 'module-builtin_driver-v4.1-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull module_platform_driver replacement from Paul Gortmaker: "Replace module_platform_driver with builtin_platform driver in non modules. We see an increasing number of non-modular drivers using modular_driver() type register functions. There are several downsides to letting this continue unchecked: - The code can appear modular to a reader of the code, and they won't know if the code really is modular without checking the Makefile and Kconfig to see if compilation is governed by a bool or tristate. - Coders of drivers may be tempted to code up an __exit function that is never used, just in order to satisfy the required three args of the modular registration function. - Non-modular code ends up including the <module.h> which increases CPP overhead that they don't need. - It hinders us from performing better separation of the module init code and the generic init code. So here we introduce similar macros for builtin drivers. Then we convert builtin drivers (controlled by a bool Kconfig) by making the following type of mapping: module_platform_driver() ---> builtin_platform_driver() module_platform_driver_probe() ---> builtin_platform_driver_probe(). The set of drivers that are converted here are just the ones that showed up as relying on an implicit include of <module.h> during a pending header cleanup. So we convert them here vs adding an include of <module.h> to non-modular code to avoid compile fails. Additonal conversions can be done asynchronously at any time. Once again, an unused module_exit function that is removed here appears in the diffstat as an outlier wrt all the other changes" * tag 'module-builtin_driver-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: drivers/clk: convert sunxi/clk-mod0.c to use builtin_platform_driver drivers/power: Convert non-modular syscon-reboot to use builtin_platform_driver drivers/soc: Convert non-modular soc-realview to use builtin_platform_driver drivers/soc: Convert non-modular tegra/pmc to use builtin_platform_driver drivers/cpufreq: Convert non-modular s5pv210-cpufreq.c to use builtin_platform_driver drivers/cpuidle: Convert non-modular drivers to use builtin_platform_driver drivers/platform: Convert non-modular pdev_bus to use builtin_platform_driver platform_device: better support builtin boilerplate avoidance
2015-07-02Merge tag 'module_init-alternate_initcall-v4.1-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull module_init replacement part two from Paul Gortmaker: "Replace module_init with appropriate alternate initcall in non modules. This series converts non-modular code that is using the module_init() call to hook itself into the system to instead use one of our alternate priority initcalls. Unlike the previous series that used device_initcall and hence was a runtime no-op, these commits change to one of the alternate initcalls, because (a) we have them and (b) it seems like the right thing to do. For example, it would seem logical to use arch_initcall for arch specific setup code and fs_initcall for filesystem setup code. This does mean however, that changes in the init ordering will be taking place, and so there is a small risk that some kind of implicit init ordering issue may lie uncovered. But I think it is still better to give these ones sensible priorities than to just assign them all to device_initcall in order to exactly preserve the old ordering. Thad said, we have already made similar changes in core kernel code in commit c96d6660dc65 ("kernel: audit/fix non-modular users of module_init in core code") without any regressions reported, so this type of change isn't without precedent. It has also got the same local testing and linux-next coverage as all the other pull requests that I'm sending for this merge window have got. Once again, there is an unused module_exit function removal that shows up as an outlier upon casual inspection of the diffstat" * tag 'module_init-alternate_initcall-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: x86: perf_event_intel_pt.c: use arch_initcall to hook in enabling x86: perf_event_intel_bts.c: use arch_initcall to hook in enabling mm/page_owner.c: use late_initcall to hook in enabling lib/list_sort: use late_initcall to hook in self tests arm: use subsys_initcall in non-modular pl320 IPC code powerpc: don't use module_init for non-modular core hugetlb code powerpc: use subsys_initcall for Freescale Local Bus x86: don't use module_init for non-modular core bootflag code netfilter: don't use module_init/exit in core IPV4 code fs/notify: don't use module_init for non-modular inotify_user code mm: replace module_init usages with subsys_initcall in nommu.c
2015-07-02Merge tag 'module_init-device_initcall-v4.1-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull module_init replacement part one from Paul Gortmaker: "Replace module_init with equivalent device_initcall in non modules. This series of commits converts non-modular code that is using the module_init() call to hook itself into the system to instead use device_initcall(). The conversion is a runtime no-op, since module_init actually becomes __initcall in the non-modular case, and that in turn gets mapped onto device_initcall. A couple files show a larger negative diffstat, representing ones that had a module_exit function that we remove here vs previously relying on the linker to dispose of it. We make this conversion now, so that we can relocate module_init from init.h into module.h in the future. The files changed here are just limited to those that would otherwise have to add module.h to obviously non-modular code, in order to avoid a compile fail, as testing has shown" * tag 'module_init-device_initcall-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: MIPS: don't use module_init in non-modular cobalt/mtd.c file drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c cris: don't use module_init for non-modular core eeprom.c code tty/metag_da: Avoid module_init/module_exit in non-modular code drivers/clk: don't use module_init in clk-nomadik.c which is non-modular xtensa: don't use module_init for non-modular core network.c code sh: don't use module_init in non-modular psw.c code mn10300: don't use module_init in non-modular flash.c code parisc64: don't use module_init for non-modular core perf code parisc: don't use module_init for non-modular core pdc_cons code cris: don't use module_init for non-modular core intmem.c code ia64: don't use module_init in non-modular sim/simscsi.c code ia64: don't use module_init for non-modular core kernel/mca.c code arm: don't use module_init in non-modular mach-vexpress/spc.c code powerpc: don't use module_init in non-modular 83xx suspend code powerpc: use device_initcall for registering rtc devices x86: don't use module_init in non-modular devicetree.c code x86: don't use module_init in non-modular intel_mid_vrtc.c
2015-07-02Merge tag 'module-implicit-v4.1-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull implicit module.h fixes from Paul Gortmaker: "Fix up implicit <module.h> users that will break later. The files changed here are simply modular source files that are implicitly relying on <module.h> being present. We fix them up now, so that we can decouple some of the module related init code from the core init code in the future. The addition of the module.h include to several files here is also a no-op from a code generation point of view, else there would already be compile issues with these files today. There may be lots more implicit includes of <module.h> in tree, but these are the ones that extensive build test coverage has shown that must be fixed in order to avoid build breakage fallout for the pending module.h <---> init.h code relocation we desire to complete" * tag 'module-implicit-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: frv: add module.h to mb93090-mb00/flash.c to avoid compile fail drivers/cpufreq: include <module.h> for modular exynos-cpufreq.c code drivers/staging: include <module.h> for modular android tegra_ion code crypto/asymmetric_keys: pkcs7_key_type needs module.h sh: mach-highlander/psw.c is tristate and should use module.h drivers/regulator: include <module.h> for modular max77802 code drivers/pcmcia: include <module.h> for modular xxs1500_ss code drivers/hsi: include <module.h> for modular omap_ssi code drivers/gpu: include <module.h> for modular rockchip code drivers/gpio: include <module.h> for modular crystalcove code drivers/clk: include <module.h> for clk-max77xxx modular code
2015-07-02Merge tag 'cpuinit-v4.1-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull __cpuinit removal from Paul Gortmaker: "Remove __cpuinit macros and users. We removed the __cpuinit stuff in 3.11-rc1 with commit 22f0a2736774 ("init.h: remove __cpuinit sections from the kernel") but we left some no-op stubs as a courtesy to unmerged code. Here we get rid of the stubs as well, since (as can be seen in these changes) they are enabling use cases to sneak back in, primarily from older BSP code that has been living out of tree for some time prior to getting mainlined. So we get rid of these "new" users 1st and then get rid of the stubs. Obviously, getting rid of the stubs can't happen until all the users are gone, so I had to keep this together as a series, even though some of these commits since got picked up into maintainers trees as well. The nature of this change is such that it should have zero impact on the generated runtime. This is one of several independent cleanup branches aimed at enabling better organization in the init.h and module.h code. They have been getting coverage in the linux-next tree for the last month, in addition to my local testing, which also covers approximately a half dozen or more architectures" * tag 'cpuinit-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: init: delete the __cpuinit related stubs kernel/cpu.c: remove new instance of __cpuinit that crept back in sched/core: remove __cpuinit section tag that crept back in. mips/mm/tlbex: remove new instance of __cpuinit that crept back in mips/c-r4k: remove legacy __cpuinit section that crept in mips/bcm77xx: remove legacy __cpuinit sections that crept in mips/ath25: remove legacy __cpuinit section that crept in arm/mach-hisi: remove legacy __CPUINIT section that crept in arm/mach-rockchip: remove legacy __cpuinit section that crept in arm/mach-mvebu: remove legacy __cpuinit sections that crept in arm/mach-keystone: remove legacy __cpuinit sections that crept in
2015-07-02arm64: cpuidle: add __init section marker to arm_cpuidle_initJisheng Zhang
It is not needed after booting, this patch moves the arm_cpuidle_init() function to the __init section. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-07-02NVMe: Fix irq freeing when queue_request_irq failsJon Derrick
Fixes an issue when queue_reuest_irq fails in nvme_setup_io_queues. This patch initializes all vectors to -1 and resets the vector to -1 in the case of a failure in queue_request_irq. This avoids the free_irq in nvme_suspend_queue if the queue did not get an irq. Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-07-02writeback: don't drain bdi_writeback_congested on bdi destructionTejun Heo
52ebea749aae ("writeback: make backing_dev_info host cgroup-specific bdi_writebacks") made bdi (backing_dev_info) host per-cgroup wb's (bdi_writeback's). As the congested state needs to be per-wb and referenced from blkcg side and multiple wbs, the patch made all non-root cong's (bdi_writeback_congested's) reference counted and indexed on bdi. When a bdi is destroyed, cgwb_bdi_destroy() tries to drain all non-root cong's; however, this can hang indefinitely because wb's can also be referenced from blkcg_gq's which are destroyed after bdi destruction is complete. This patch fixes the bug by updating bdi destruction to not wait for cong's to drain. A cong is unlinked from bdi->cgwb_congested_tree on bdi destuction regardless of its reference count as the bdi may go away any point after destruction. wb_congested_put() checks whether the cong is already unlinked on release. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Jon Christopherson <jon@jons.org> Link: https://bugzilla.kernel.org/show_bug.cgi?id=100681 Fixes: 52ebea749aae ("writeback: make backing_dev_info host cgroup-specific bdi_writebacks") Tested-by: Jon Christopherson <jon@jons.org> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-07-02writeback: don't embed root bdi_writeback_congested in bdi_writebackTejun Heo
52ebea749aae ("writeback: make backing_dev_info host cgroup-specific bdi_writebacks") made bdi (backing_dev_info) host per-cgroup wb's (bdi_writeback's). As the congested state needs to be per-wb and referenced from blkcg side and multiple wbs, the patch made all non-root cong's (bdi_writeback_congested's) reference counted and indexed on bdi. When a bdi is destroyed, cgwb_bdi_destroy() tries to drain all non-root cong's; however, this can hang indefinitely because wb's can also be referenced from blkcg_gq's which are destroyed after bdi destruction is complete. To fix the bug, bdi destruction will be updated to not wait for cong's to drain, which naturally means that cong's may outlive the associated bdi. This is fine for non-root cong's but is problematic for the root cong's which are embedded in their bdi's as they may end up getting dereferenced after the containing bdi's are freed. This patch makes root cong's behave the same as non-root cong's. They are no longer embedded in their bdi's but allocated separately during bdi initialization, indexed and reference counted the same way. * As cong handling is the same for all wb's, wb->congested initialization is moved into wb_init(). * When !CONFIG_CGROUP_WRITEBACK, there was no indexing or refcnting. bdi->wb_congested is now a pointer pointing to the root cong allocated during bdi init and minimal refcnting operations are implemented. * The above makes root wb init paths diverge depending on CONFIG_CGROUP_WRITEBACK. root wb init is moved to cgwb_bdi_init(). This patch in itself shouldn't cause any consequential behavior differences but prepares for the actual fix. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Jon Christopherson <jon@jons.org> Link: https://bugzilla.kernel.org/show_bug.cgi?id=100681 Tested-by: Jon Christopherson <jon@jons.org> Added <linux/slab.h> include to backing-dev.h for kfree() definition. Signed-off-by: Jens Axboe <axboe@fb.com>
2015-07-02NTB: Move files in preparation for NTB abstractionAllen Hubbe
This patch only moves files to their new locations, before applying the next two patches adding the NTB Abstraction layer. Splitting this patch from the next is intended make distinct which code is changed only due to moving the files, versus which are substantial code changes in adding the NTB Abstraction layer. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-02OMAPDSS: fix probing if rfbi device is enabledTomi Valkeinen
After the commit 736e60ddc215b85e73bbf7da26e1cde84cc9500f ("OMAPDSS: componentize omapdss") the dss core device will wait until all the subdevices have been successfully probed. However, we don't have a working driver for RFBI, so if RFBI device exists, omapdss will never get probed. All the .dtsi files set RFBI as disabled, except am4372.dtsi. This causes omapdss probe to not finish on AM4 devices. This patch makes omapdss driver skip adding rfbi device as a subcomponent, solving the issue. This should be reverted when we have a working RFBI driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reported-by: Felipe Balbi <balbi@ti.com>
2015-07-02x86/asm/entry/64: Update path namesJames C Boyd
The paths mentioned in this file weren't updated through some file rename commits. Fix them to refer to the correct path. Signed-off-by: James C Boyd <jcboyd.dev@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: corbet@lwn.net Cc: trivial@kernel.org Link: http://lkml.kernel.org/r/1435781606-3037-1-git-send-email-jcboyd.dev@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-07-02Merge tag 'perf-core-for-mingo' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core fixes from Arnaldo Carvalho de Melo: Build fixes: - Create config.detected into OUTPUT directory, fixing parallel builds sharing the same source directory (Aaro Kiskinen) - Allow to specify custom linker command, fixing some MIPS64 builds. (Aaro Kiskinen) Infrastructure fixes: - Add missing break for PERF_RECORD_ITRACE_START, which caused those events samples to be parsed as well as PERF_RECORD_LOST_SAMPLES. ITRACE_START only appears when Intel PT or BTS are present, so (Jiri Olsa) - Call the perf_session destructor when bailing out in the inject, kmem, report, kvm and mem tools (Taeung Song) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-07-02EDAC, octeon: Fix broken build due to model helper renamesAaro Koskinen
Commit debe6a623d3c ("MIPS: OCTEON: Update octeon-model.h code for new SoCs.") renamed some SoC model helper functions, but forgot to update the EDAC drivers resulting in build failures. Fix that. Cc: stable@vger.kernel.org # v4.0+ Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Acked-by: David Daney <david.daney@cavium.com> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: linux-mips@linux-mips.org Link: http://lkml.kernel.org/r/1435747132-10954-1-git-send-email-aaro.koskinen@nokia.com Signed-off-by: Borislav Petkov <bp@suse.de>
2015-07-02ext4: avoid deadlocks in the writeback path by using sb_getblk_gfpNikolay Borisov
Switch ext4 to using sb_getblk_gfp with GFP_NOFS added to fix possible deadlocks in the page writeback path. Signed-off-by: Nikolay Borisov <kernel@kyup.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
2015-07-02bufferhead: Add _gfp version for sb_getblk()Nikolay Borisov
sb_getblk() is used during ext4 (and possibly other FSes) writeback paths. Sometimes such path require allocating memory and guaranteeing that such allocation won't block. Currently, however, there is no way to provide user flags for sb_getblk which could lead to deadlocks. This patch implements a sb_getblk_gfp with the only difference it can accept user-provided GFP flags. Signed-off-by: Nikolay Borisov <kernel@kyup.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
2015-07-01ext4: fix fencepost error in lazytime optimizationTheodore Ts'o
Commit 8f4d8558391: "ext4: fix lazytime optimization" was not a complete fix. In the case where the inode number is a multiple of 16, and we could still end up updating an inode with dirty timestamps written to the wrong inode on disk. Oops. This can be easily reproduced by using generic/005 with a file system with metadata_csum and lazytime enabled. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
2015-07-01Merge tag 'devicetree-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux Pull devicetree updates from Grant Likely: "A whole lot of bug fixes. Nothing stands out here except the ability to enable CONFIG_OF on every architecture, and an import of a newer version of dtc" * tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux: (22 commits) of/irq: Rename "intc_desc" to "of_intc_desc" to fix OF on sh of/irq: Fix pSeries boot failure Documentation: DT: Fix a typo in the filename "lantiq,<chip>-pinumx.txt" of: define of_find_node_by_phandle for !CONFIG_OF of/address: use atomic allocation in pci_register_io_range() of: Add vendor prefix for Zodiac Inflight Innovations dt/fdt: add empty versions of early_init_dt_*_memory_arch of: clean-up unnecessary libfdt include paths of: make unittest select OF_EARLY_FLATTREE instead of depend on it of: make CONFIG_OF user selectable MIPS: prepare for user enabling of CONFIG_OF of/fdt: fix argument name and add comments of unflatten_dt_node() of: return NUMA_NO_NODE from fallback of_node_to_nid() tps6507x.txt: Remove executable permission of/overlay: Grammar s/an negative/a negative/ of/fdt: Make fdt blob input parameters of unflatten functions const of: add helper function to retrive match data of: Grammar s/property exist/property exists/ of: Move OF flags to be visible even when !CONFIG_OF scripts/dtc: Update to upstream version 9d3649bd3be245c9 ...
2015-07-01Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds
Pull watchdog updates from Wim Van Sebroeck: "This contains: - new driver for ST's LPC Watchdog - new driver for Conexant Digicolor CX92755 SoC - new driver for DA9062 watchdog - Addition of the watchdog registration deferral mechanism - several improvements on omap_wdt - several improvements and reboot-support for imgpdc_wdt - max63xx_wdt improvements - imx2_wdt improvements - dw_wdt improvements - and other small improvements and fixes" * git://www.linux-watchdog.org/linux-watchdog: (37 commits) watchdog: omap_wdt: early_enable module parameter watchdog: gpio_wdt: Add option for early registration watchdog: watchdog_core: Add watchdog registration deferral mechanism watchdog: max63xx: dynamically allocate device watchdog: imx2_wdt: Disable previously acquired clock on error path watchdog: imx2_wdt: Check for clk_prepare_enable() error watchdog: hpwdt: Add support for WDIOC_SETOPTIONS watchdog: docs: omap_wdt also understands nowayout watchdog: omap_wdt: implement get_timeleft watchdog: da9062: DA9062 watchdog driver watchdog: imx2_wdt: set watchdog parent device watchdog: mena21_wdt: Fix possible NULL pointer dereference watchdog: dw_wdt: keepalive the watchdog at write time watchdog: dw_wdt: No need for a spinlock watchdog: imx2_wdt: also set wdog->timeout to new_timeout watchdog: Allow compile test of GPIO consumers if !GPIOLIB watchdog: cadence: Add dependency on HAS_IOMEM watchdog: max63xx_wdt: Constify platform_device_id watchdog: MAX63XX_WATCHDOG does not depend on ARM watchdog: imgpdc: Add some documentation about the timeout ...