510553 Commits

Author SHA1 Message Date
Linus Torvalds
49d2953c72 Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler changes from Ingo Molnar:
 "Major changes:

   - Reworked CPU capacity code, for better SMP load balancing on
     systems with assymetric CPUs. (Vincent Guittot, Morten Rasmussen)

   - Reworked RT task SMP balancing to be push based instead of pull
     based, to reduce latencies on large CPU count systems. (Steven
     Rostedt)

   - SCHED_DEADLINE support updates and fixes. (Juri Lelli)

   - SCHED_DEADLINE task migration support during CPU hotplug. (Wanpeng Li)

   - x86 mwait-idle optimizations and fixes. (Mike Galbraith, Len Brown)

   - sched/numa improvements. (Rik van Riel)

   - various cleanups"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
  sched/core: Drop debugging leftover trace_printk call
  sched/deadline: Support DL task migration during CPU hotplug
  sched/core: Check for available DL bandwidth in cpuset_cpu_inactive()
  sched/deadline: Always enqueue on previous rq when dl_task_timer() fires
  sched/core: Remove unused argument from init_[rt|dl]_rq()
  sched/deadline: Fix rt runtime corruption when dl fails its global constraints
  sched/deadline: Avoid a superfluous check
  sched: Improve load balancing in the presence of idle CPUs
  sched: Optimize freq invariant accounting
  sched: Move CFS tasks to CPUs with higher capacity
  sched: Add SD_PREFER_SIBLING for SMT level
  sched: Remove unused struct sched_group_capacity::capacity_orig
  sched: Replace capacity_factor by usage
  sched: Calculate CPU's usage statistic and put it into struct sg_lb_stats::group_usage
  sched: Add struct rq::cpu_capacity_orig
  sched: Make scale_rt invariant with frequency
  sched: Make sched entity usage tracking scale-invariant
  sched: Remove frequency scaling from cpu_capacity
  sched: Track group sched_entity usage contributions
  sched: Add sched_avg::utilization_avg_contrib
  ...
2015-04-13 10:47:34 -07:00
Linus Torvalds
cc76ee75a9 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core locking changes from Ingo Molnar:
 "Main changes:

   - jump label asm preparatory work for PowerPC (Anton Blanchard)

   - rwsem optimizations and cleanups (Davidlohr Bueso)

   - mutex optimizations and cleanups (Jason Low)

   - futex fix (Oleg Nesterov)

   - remove broken atomicity checks from {READ,WRITE}_ONCE() (Peter
     Zijlstra)"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  powerpc, jump_label: Include linux/jump_label.h to get HAVE_JUMP_LABEL define
  jump_label: Allow jump labels to be used in assembly
  jump_label: Allow asm/jump_label.h to be included in assembly
  locking/mutex: Further simplify mutex_spin_on_owner()
  locking: Remove atomicy checks from {READ,WRITE}_ONCE
  locking/rtmutex: Rename argument in the rt_mutex_adjust_prio_chain() documentation as well
  locking/rwsem: Fix lock optimistic spinning when owner is not running
  locking: Remove ACCESS_ONCE() usage
  locking/rwsem: Check for active lock before bailing on spinning
  locking/rwsem: Avoid deceiving lock spinners
  locking/rwsem: Set lock ownership ASAP
  locking/rwsem: Document barrier need when waking tasks
  locking/futex: Check PF_KTHREAD rather than !p->mm to filter out kthreads
  locking/mutex: Refactor mutex_spin_on_owner()
  locking/mutex: In mutex_spin_on_owner(), return true when owner changes
2015-04-13 10:27:28 -07:00
Linus Torvalds
9c65e12a55 Merge branch 'core-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI update from Ingo Molnar:
 "This tree includes various fixes, cleanups, a new efi=debug boot
  option and EFI boot stub memory allocation optimizations"

* 'core-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/libstub: Retrieve FDT size when loaded from UEFI config table
  efi: Clean up the efi_call_phys_[prolog|epilog]() save/restore interaction
  efi: Disable interrupts around EFI calls, not in the epilog/prolog calls
  x86/efi: Add a "debug" option to the efi= cmdline
  firmware: dmi_scan: Use direct access to static vars
  firmware: dmi_scan: Use full dmi version for SMBIOS3
2015-04-13 10:22:30 -07:00
Linus Torvalds
67dbb3a099 md fixes for 4.0-rc7
Revert recent change which broke IO accounting.
 Fix bug with RAID0 arrays with non-power-of-2 chunk size.
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Merge tag 'md/4.0-rc7-fix' of git://neil.brown.name/md

Pull md fixes from Neil Brown:
 "Two regression fixes for md, one fairly recent and minor (diskstats
  has confusing data) and one older and more serious - RAID0 with
  non-power-of-2 chunksize corrupts data.

  I guess (almost) no-one uses non-power-of-2 chunks.

  Summary:

   - Revert recent change which broke IO accounting.

   - Fix bug with RAID0 arrays with non-power-of-2 chunk size"

* tag 'md/4.0-rc7-fix' of git://neil.brown.name/md:
  md/raid0: fix bug with chunksize not a power of 2.
  md: fix md io stats accounting broken
2015-04-13 10:11:18 -07:00
Andrey Ryabinin
940db9e654 avr32: fix integer overflow in ELF_ET_DYN_BASE
Almost all arches define ELF_ET_DYN_BASE as 2/3 of TASK_SIZE.
Though it seems that some architectures do this in a wrong way.
The problem is that 2*TASK_SIZE may overflow 32-bits so
the real ELF_ET_DYN_BASE becomes wrong.
Fix this overflow by dividing TASK_SIZE prior to multiplying:
	 (TASK_SIZE / 3 * 2)

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
2015-04-13 18:48:55 +02:00
Linus Torvalds
9003601310 The most interesting bit here is irqfd/ioeventfd support for ARM and ARM64.
ARM/ARM64: fixes for live migration, irqfd and ioeventfd support (enabling
 vhost, too), page aging
 
 s390: interrupt handling rework, allowing to inject all local interrupts
 via new ioctl and to get/set the full local irq state for migration
 and introspection.  New ioctls to access memory by virtual address,
 and to get/set the guest storage keys.  SIMD support.
 
 MIPS: FPU and MIPS SIMD Architecture (MSA) support.  Includes some patches
 from Ralf Baechle's MIPS tree.
 
 x86: bugfixes (notably for pvclock, the others are small) and cleanups.
 Another small latency improvement for the TSC deadline timer.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "First batch of KVM changes for 4.1

  The most interesting bit here is irqfd/ioeventfd support for ARM and
  ARM64.

  Summary:

  ARM/ARM64:
     fixes for live migration, irqfd and ioeventfd support (enabling
     vhost, too), page aging

  s390:
     interrupt handling rework, allowing to inject all local interrupts
     via new ioctl and to get/set the full local irq state for migration
     and introspection.  New ioctls to access memory by virtual address,
     and to get/set the guest storage keys.  SIMD support.

  MIPS:
     FPU and MIPS SIMD Architecture (MSA) support.  Includes some
     patches from Ralf Baechle's MIPS tree.

  x86:
     bugfixes (notably for pvclock, the others are small) and cleanups.
     Another small latency improvement for the TSC deadline timer"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (146 commits)
  KVM: use slowpath for cross page cached accesses
  kvm: mmu: lazy collapse small sptes into large sptes
  KVM: x86: Clear CR2 on VCPU reset
  KVM: x86: DR0-DR3 are not clear on reset
  KVM: x86: BSP in MSR_IA32_APICBASE is writable
  KVM: x86: simplify kvm_apic_map
  KVM: x86: avoid logical_map when it is invalid
  KVM: x86: fix mixed APIC mode broadcast
  KVM: x86: use MDA for interrupt matching
  kvm/ppc/mpic: drop unused IRQ_testbit
  KVM: nVMX: remove unnecessary double caching of MAXPHYADDR
  KVM: nVMX: checks for address bits beyond MAXPHYADDR on VM-entry
  KVM: x86: cache maxphyaddr CPUID leaf in struct kvm_vcpu
  KVM: vmx: pass error code with internal error #2
  x86: vdso: fix pvclock races with task migration
  KVM: remove kvm_read_hva and kvm_read_hva_atomic
  KVM: x86: optimize delivery of TSC deadline timer interrupt
  KVM: x86: extract blocking logic from __vcpu_run
  kvm: x86: fix x86 eflags fixed bit
  KVM: s390: migrate vcpu interrupt state
  ...
2015-04-13 09:47:01 -07:00
Linus Torvalds
4541fec310 linux-kselftest-4.1-rc1
This update adds install and packaging tools developed on top
 of back-end shared logic enhancemnets to run and install tests.
 In addition several timer tests are added.
 
 - New timer tests from John Stultz
 - rtc test from Prarit Bhargava
 - Enhancements to un and install tests from Michael Ellerman
 - Install and packaging tools from Shuah Khan
 - Cross-compilation enablement from Tyler Baker
 - A couple of bug fixes.
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Merge tag 'linux-kselftest-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:
 "This is a milestone update in a sense.  Several new tests and install
  and packaging support is added in this update.

  This update adds install and packaging tools developed on top of
  back-end shared logic enhancemnets to run and install tests.  In
  addition several timer tests are added.

   - New timer tests from John Stultz

   - rtc test from Prarit Bhargava

   - Enhancements to un and install tests from Michael Ellerman

   - Install and packaging tools from Shuah Khan

   - Cross-compilation enablement from Tyler Baker

   - A couple of bug fixes"

* tag 'linux-kselftest-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (42 commits)
  ftracetest: Do not use usleep directly
  selftest/mqueue: enable cross compilation
  selftest/ipc: enable cross compilation
  selftest/memfd: include default header install path
  selftest/mount: enable cross compilation
  selftest/memfd: enable cross compilation
  kselftests: timers: Make set-timer-lat fail more gracefully for !CAP_WAKE_ALARM
  selftests: Change memory on-off-test.sh name to be unique
  selftests: change cpu on-off-test.sh name to be unique
  selftests/mount: Make git ignore all binaries in mount test suite
  kselftests: timers: Reduce default runtime on inconsistency-check and set-timer-lat
  ftracetest: Convert exit -1 to exit $FAIL
  ftracetest: Cope properly with stack tracer not being enabled
  tools, update rtctest.c to verify passage of time
  Documentation, split up rtc.txt into documentation and test file
  selftests: Add tool to generate kselftest tar archive
  selftests: Add kselftest install tool
  selftests: Set CC using CROSS_COMPILE once in lib.mk
  selftests: Add install support for the powerpc tests
  selftests/timers: Use shared logic to run and install tests
  ...
2015-04-13 08:59:21 -07:00
Ingo Molnar
590ee7dbd5 cpu: Provide smpboot_thread_init() on !CONFIG_SMP kernels as well
Now that we are using smpboot_thread_init() in init/main.c as well,
provide it for !CONFIG_SMP as well.

This addresses a !CONFIG_SMP build failure.

Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-13 10:19:30 +02:00
Paul E. McKenney
00df35f991 cpu: Defer smpboot kthread unparking until CPU known to scheduler
Currently, smpboot_unpark_threads() is invoked before the incoming CPU
has been added to the scheduler's runqueue structures.  This might
potentially cause the unparked kthread to run on the wrong CPU, since the
correct CPU isn't fully set up yet.

That causes a sporadic, hard to debug boot crash triggering on some
systems, reported by Borislav Petkov, and bisected down to:

  2a442c9c6453 ("x86: Use common outgoing-CPU-notification code")

This patch places smpboot_unpark_threads() in a CPU hotplug
notifier with priority set so that these kthreads are unparked just after
the CPU has been added to the runqueues.

Reported-and-tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-13 08:25:16 +02:00
Anand Moon
f354169e0f hwmon: (pwm-fan) Update the duty cycle inorder to control the pwm-fan
pwm_config() must be called with a duty cycle of 0 prior to calling
pwm_disable() to ensure that the pwm signal is set to low.

Reported-by: Markus Reichl <m.reichl@fivetechno.de>
Tested-by: Markus Reichl <m.reichl@fivetechno.de>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
Reviewed-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-12 15:59:11 -07:00
Linus Torvalds
39a8804455 Linux 4.0 v4.0 2015-04-12 15:12:50 -07:00
Linus Torvalds
6a23b45f1d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs and fs fixes from Al Viro:
 "Several AIO and OCFS2 fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ocfs2: _really_ sync the right range
  ocfs2_file_write_iter: keep return value and current position update in sync
  [regression] ocfs2: do *not* increment ->ki_pos twice
  ioctx_alloc(): fix vma (and file) leak on failure
  fix mremap() vs. ioctx_kill() race
2015-04-12 10:56:12 -07:00
Linus Torvalds
54d8ccc302 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
Pull last minute thermal-SoC management fixes from Eduardo Valentin:
 "Specifics:

   - Minor fixes on ST and RCAR thermal drivers.
   - Avoid flooding kernel log when driver returns -EAGAIN.

  Note: I am sending this pull on Rui's behalf while he fixes issues in
  his Linux box"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
  drivers: thermal: st: remove several sparse warnings
  thermal: constify of_device_id array
  thermal: Do not log an error if thermal_zone_get_temp returns -EAGAIN
  thermal: rcar: Fix typo in r8a73a4 SoC name
2015-04-12 10:43:30 -07:00
Ingo Molnar
066450be41 perf/x86/intel/pt: Clean up the control flow in pt_pmu_hw_init()
Dan Carpenter pointed out that the control flow in pt_pmu_hw_init()
is a bit messy: for example the kfree(de_attrs) is entirely
superfluous.

Another problem is the inconsistent mixing of label based and
direct return error handling.

Add modern, label based error handling instead and clean up the code
a bit as well.

Note that we'll still do a kfree(NULL) in the normal case - this does
not matter as this is an init path and kfree() returns early if it
sees a NULL.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20150409090805.GG17605@mwanda
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-12 11:21:15 +02:00
Al Viro
fdc81f45e9 sg_start_req(): use import_iovec()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:14 -04:00
Al Viro
451a2886b6 sg_start_req(): make sure that there's not too many elements in iovec
unfortunately, allowing an arbitrary 16bit value means a possibility of
overflow in the calculation of total number of pages in bio_map_user_iov() -
we rely on there being no more than PAGE_SIZE members of sum in the
first loop there.  If that sum wraps around, we end up allocating
too small array of pointers to pages and it's easy to overflow it in
the second loop.

X-Coverup: TINC (and there's no lumber cartel either)
Cc: stable@vger.kernel.org # way, way back
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:13 -04:00
Al Viro
8f7e885a4c blk_rq_map_user(): use import_single_range()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:13 -04:00
Al Viro
e272b89ff8 sg_io(): use import_iovec()
... and don't skip access_ok() validation.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:13 -04:00
Al Viro
17d17e7282 process_vm_access: switch to {compat_,}import_iovec()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:12 -04:00
Al Viro
b353a1f7bb switch keyctl_instantiate_key_common() to iov_iter
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:12 -04:00
Al Viro
0504c074b5 switch {compat_,}do_readv_writev() to {compat_,}import_iovec()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:12 -04:00
Al Viro
32a56afa23 aio_setup_vectored_rw(): switch to {compat_,}import_iovec()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:11 -04:00
Al Viro
345995fa48 vmsplice_to_user(): switch to import_iovec()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:11 -04:00
Al Viro
d4fb392f4c kill aio_setup_single_vector()
identical to import_single_range()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:27:10 -04:00
Al Viro
36e9f6535f Merge branch 'iov_iter' into for-next 2015-04-11 22:26:51 -04:00
Al Viro
a96114fa1a aio: simplify arguments of aio_setup_..._rw()
We don't need req in either of those.  We don't need nr_segs in caller.
We don't really need len in caller either - iov_iter_count(&iter) will do.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:26:45 -04:00
Al Viro
4c185ce06d aio: lift iov_iter_init() into aio_setup_..._rw()
the only non-trivial detail is that we do it before rw_verify_area(),
so we'd better cap the length ourselves in aio_setup_single_rw()
case (for vectored case rw_copy_check_uvector() will do that for us).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:26:45 -04:00
Al Viro
ac15ac0669 lift iov_iter into {compat_,}do_readv_writev()
get it closer to matching {compat_,}rw_copy_check_uvector().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:26:45 -04:00
Al Viro
c0fec3a98b Merge branch 'iocb' into for-next 2015-04-11 22:24:41 -04:00
Andrew Elble
c1b8940b42 NFS: fix BUG() crash in notify_change() with patch to chown_common()
We have observed a BUG() crash in fs/attr.c:notify_change(). The crash
occurs during an rsync into a filesystem that is exported via NFS.

1.) fs/attr.c:notify_change() modifies the caller's version of attr.
2.) 6de0ec00ba8d ("VFS: make notify_change pass ATTR_KILL_S*ID to
    setattr operations") introduced a BUG() restriction such that "no
    function will ever call notify_change() with both ATTR_MODE and
    ATTR_KILL_S*ID set". Under some circumstances though, it will have
    assisted in setting the caller's version of attr to this very
    combination.
3.) 27ac0ffeac80 ("locks: break delegations on any attribute
    modification") introduced code to handle breaking
    delegations. This can result in notify_change() being re-called. attr
    _must_ be explicitly reset to avoid triggering the BUG() established
    in #2.
4.) The path that that triggers this is via fs/open.c:chmod_common().
    The combination of attr flags set here and in the first call to
    notify_change() along with a later failed break_deleg_wait()
    results in notify_change() being called again via retry_deleg
    without resetting attr.

Solution is to move retry_deleg in chmod_common() a bit further up to
ensure attr is completely reset.

There are other places where this seemingly could occur, such as
fs/utimes.c:utimes_common(), but the attr flags are not initially
set in such a way to trigger this.

Fixes: 27ac0ffeac80 ("locks: break delegations on any attribute modification")
Reported-by: Eric Meddaugh <etmsys@rit.edu>
Tested-by: Eric Meddaugh <etmsys@rit.edu>
Signed-off-by: Andrew Elble <aweits@rit.edu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:34 -04:00
J. Bruce Fields
3d330dc175 dcache: return -ESTALE not -EBUSY on distributed fs race
On a distributed filesystem it's possible for lookup to discover that a
directory it just found is already cached elsewhere in the directory
heirarchy.  The dcache won't let us keep the directory in both places,
so we have to move the dentry to the new location from the place we
previously had it cached.

If the parent has changed, then this requires all the same locks as we'd
need to do a cross-directory rename.  But we're already in lookup
holding one parent's i_mutex, so it's too late to acquire those locks in
the right order.

The (unreliable) solution in __d_unalias is to trylock() the required
locks and return -EBUSY if it fails.

I see no particular reason for returning -EBUSY, and -ESTALE is already
the result of some other lookup races on NFS.  I think -ESTALE is the
more helpful error return.  It also allows us to take advantage of the
logic Jeff Layton added in c6a9428401c0 "vfs: fix renameat to retry on
ESTALE errors" and ancestors, which hopefully resolves some of these
errors before they're returned to userspace.

I can reproduce these cases using NFS with:

	ssh root@$client '
		mount -olookupcache=pos '$server':'$export' /mnt/
		mkdir /mnt/TO
		mkdir /mnt/DIR
		touch /mnt/DIR/test.txt
		while true; do
			strace -e open cat /mnt/DIR/test.txt 2>&1 | grep EBUSY
		done
	'
	ssh root@$server '
		while true; do
			mv $export/DIR $export/TO/DIR
			mv $export/TO/DIR $export/DIR
		done
	'

It also helps to add some other concurrent use of the directory on the
client (e.g., "ls /mnt/TO").  And you can replace the server-side mv's
by client-side mv's that are repeatedly killed.  (If the client is
interrupted while waiting for the RENAME response then it's left with a
dentry that has to go under one parent or the other, but it doesn't yet
know which.)

Acked-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:33 -04:00
Anton Altaparmakov
a632f55930 NTFS: Version 2.1.32 - Update file write from aio_write to write_iter.
Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:33 -04:00
Anton Altaparmakov
171a02032b VFS: Add iov_iter_fault_in_multipages_readable()
simillar to iov_iter_fault_in_readable() but differs in that it is
not limited to faulting in the first iovec and instead faults in
"bytes" bytes iterating over the iovecs as necessary.

Also, instead of only faulting in the first and last page of the
range, all pages are faulted in.

This function is needed by NTFS when it does multi page file
writes.

Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:32 -04:00
Al Viro
e5b811e38a drop bogus check in file_open_root()
For one thing, LOOKUP_DIRECTORY will be dealt with in do_last().
For another, name can be an empty string, but not NULL - no callers
pass that and it would oops immediately if they would.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:32 -04:00
Al Viro
3f7036a071 switch security_inode_getattr() to struct path *
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:32 -04:00
Al Viro
2247386243 constify tomoyo_realpath_from_path()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:31 -04:00
Al Viro
74008b365d whack-a-mole: there's no point doing set_fs(USER_DS) in sigframe setup
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:31 -04:00
Al Viro
a555ad450f whack-a-mole: no need to set_fs(USER_DS) in {start,flush}_thread()
flush_old_exec() has already done that.  Back on 2011 a bunch of
instances like that had been kicked out, but that hadn't taken
care of then-out-of-tree architectures, obviously, and they served
as reinfection vector...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:31 -04:00
Al Viro
9e7543e939 remove incorrect comment in lookup_one_len()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:30 -04:00
Al Viro
74eb8cc5a5 namei.c: fold do_path_lookup() into both callers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:24:30 -04:00
Al Viro
fd2f7cb5bc kill struct filename.separate
just make const char iname[] the last member and compare name->name with
name->iname instead of checking name->separate

We need to make sure that out-of-line name doesn't end up allocated adjacent
to struct filename refering to it; fortunately, it's easy to achieve - just
allocate that struct filename with one byte in ->iname[], so that ->iname[0]
will be inside the same object and thus have an address different from that
of out-of-line name [spotted by Boqun Feng <boqun.feng@gmail.com>]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11 22:21:24 -04:00
Linus Torvalds
56fd85b5dd ASoC: Last minute fix for v4.0
This patch backs out a change that came in during the merge window which
 selects a configuration for GPIO4 on pcm512x CODECs that may not be
 suitable for all systems using the device.  Changes for v4.1 will make
 this properly configurable but for now it's safest to revert to the
 v3.19 behaviour and leave the pin configuration alone.
 
 Sorry for sending this direct at the last minute but due to the GPIO
 misuse it'd be really good to get it in the release and I'd not realised
 it hadn't been sent yet - between some travel, a job change and other
 non-urgent fixes coming in I'd lost track of the urgency.  It's been in
 -next for several weeks now, is isolated to the driver and fairly clear
 to inspection.
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Merge tag 'asoc-fix-v4.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound

Pull last-minute ASoC fix from Mark Brown:
 "This patch backs out a change that came in during the merge window
  which selects a configuration for GPIO4 on pcm512x CODECs that may not
  be suitable for all systems using the device.  Changes for v4.1 will
  make this properly configurable but for now it's safest to revert to
  the v3.19 behaviour and leave the pin configuration alone.

  Sorry for sending this direct at the last minute but due to the GPIO
  misuse it'd be really good to get it in the release and I'd not
  realised it hadn't been sent yet - between some travel, a job change
  and other non-urgent fixes coming in I'd lost track of the urgency.

  It's been in -next for several weeks now, is isolated to the driver
  and fairly clear to inspection"

* tag 'asoc-fix-v4.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound:
  ASoC: pcm512x: Remove hardcoding of pll-lock to GPIO4
2015-04-11 15:57:36 -07:00
Mark Brown
56afdb70ca Merge remote-tracking branches 'spi/topic/spidev' and 'spi/topic/spidev-test' into spi-next 2015-04-11 23:09:31 +01:00
Mark Brown
165f2288e1 Merge remote-tracking branches 'spi/topic/qup', 'spi/topic/rockchip', 'spi/topic/rspi', 'spi/topic/s3c64xx' and 'spi/topic/sc18is602' into spi-next 2015-04-11 23:09:25 +01:00
Mark Brown
8afba181b9 Merge remote-tracking branches 'spi/topic/omap-100k', 'spi/topic/omap-uwire', 'spi/topic/pl022', 'spi/topic/pm' and 'spi/topic/pxa2xx' into spi-next 2015-04-11 23:09:18 +01:00
Mark Brown
35fbf8452c Merge remote-tracking branches 'spi/topic/fsl-cspi', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/of-id' into spi-next 2015-04-11 23:09:14 +01:00
Mark Brown
431959c079 Merge remote-tracking branches 'spi/topic/blackfin', 'spi/topic/cadence', 'spi/topic/dw' and 'spi/topic/err' into spi-next 2015-04-11 23:09:09 +01:00
Mark Brown
f9de73426c Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm2385', 'spi/topic/bcm2835', 'spi/topic/bcm53xx' and 'spi/topic/bitbang' into spi-next 2015-04-11 23:09:03 +01:00
Mark Brown
19655dd083 Merge remote-tracking branch 'spi/topic/img-spfi' into spi-next 2015-04-11 23:09:01 +01:00
Mark Brown
e897f795a9 Merge remote-tracking branch 'spi/topic/core' into spi-next 2015-04-11 23:09:00 +01:00