1. 07 Oct, 2015 1 commit
  2. 23 Sep, 2015 1 commit
    • Roger Pau Monne's avatar
      xen/blkback: free requests on disconnection · f929d42c
      Roger Pau Monne authored
      This is due to  commit 86839c56
      "xen/block: add multi-page ring support"
      
      When using an guest under UEFI - after the domain is destroyed
      the following warning comes from blkback.
      
      ------------[ cut here ]------------
      WARNING: CPU: 2 PID: 95 at
      /home/julien/works/linux/drivers/block/xen-blkback/xenbus.c:274
      xen_blkif_deferred_free+0x1f4/0x1f8()
      Modules linked in:
      CPU: 2 PID: 95 Comm: kworker/2:1 Tainted: G        W       4.2.0 #85
      Hardware name: APM X-Gene Mustang board (DT)
      Workqueue: events xen_blkif_deferred_free
      Call trace:
      [<ffff8000000890a8>] dump_backtrace+0x0/0x124
      [<ffff8000000891dc>] show_stack+0x10/0x1c
      [<ffff8000007653bc>] dump_stack+0x78/0x98
      [<ffff800000097e88>] warn_slowpath_common+0x9c/0xd4
      [<ffff800000097f80>] warn_slowpath_null+0x14/0x20
      [<ffff800000557a0c>] xen_blkif_deferred_free+0x1f0/0x1f8
      [<ffff8000000ad020>] process_one_work+0x160/0x3b4
      [<ffff8000000ad3b4>] worker_thread+0x140/0x494
      [<ffff8000000b2e34>] kthread+0xd8/0xf0
      ---[ end trace 6f859b7883c88cdd ]---
      
      Request allocation has been moved to connect_ring, which is called every
      time blkback connects to the frontend (this can happen multiple times during
      a blkback instance life cycle). On the other hand, request freeing has not
      been moved, so it's only called when destroying the backend instance. Due to
      this mismatch, blkback can allocate the request pool multiple times, without
      freeing it.
      
      In order to fix it, move the freeing of requests to xen_blkif_disconnect to
      restore the symmetry between request allocation and freeing.
      Reported-by: default avatarJulien Grall <julien.grall@citrix.com>
      Signed-off-by: default avatarRoger Pau Monné <roger.pau@citrix.com>
      Tested-by: default avatarJulien Grall <julien.grall@citrix.com>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: David Vrabel <david.vrabel@citrix.com>
      Cc: xen-devel@lists.xenproject.org
      CC: stable@vger.kernel.org # 4.2
      Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      f929d42c
  3. 26 Aug, 2015 1 commit
  4. 19 Aug, 2015 1 commit
  5. 18 Aug, 2015 3 commits
  6. 17 Aug, 2015 11 commits
  7. 21 Jul, 2015 3 commits
  8. 17 Jul, 2015 7 commits
    • Jens Axboe's avatar
      block: make /sys/block/<dev>/queue/discard_max_bytes writeable · 0034af03
      Jens Axboe authored
      Lots of devices support huge discard sizes these days. Depending
      on how the device handles them internally, huge discards can
      introduce massive latencies (hundreds of msec) on the device side.
      
      We have a sysfs file, discard_max_bytes, that advertises the max
      hardware supported discard size. Make this writeable, and split
      the settings into a soft and hard limit. This can be set from
      'discard_granularity' and up to the hardware limit.
      
      Add a new sysfs file, 'discard_max_hw_bytes', that shows the hw
      set limit.
      Reviewed-by: default avatarJeff Moyer <jmoyer@redhat.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      0034af03
    • Jens Axboe's avatar
      block: have drivers use blk_queue_max_discard_sectors() · 2bb4cd5c
      Jens Axboe authored
      Some drivers use it now, others just set the limits field manually.
      But in preparation for splitting this into a hard and soft limit,
      ensure that they all call the proper function for setting the hw
      limit for discards.
      Reviewed-by: default avatarJeff Moyer <jmoyer@redhat.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      2bb4cd5c
    • Ming Lei's avatar
      block: partition: convert percpu ref · 6c71013e
      Ming Lei authored
      Percpu refcount is the perfect match for partition's case,
      and the conversion is quite straight.
      
      With the convertion, one pair of atomic inc/dec can be saved
      for accounting block I/O, which is run in hot path of block I/O.
      Signed-off-by: default avatarMing Lei <tom.leiming@gmail.com>
      Acked-by: default avatarTejun Heo <tj@kernel.org>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      6c71013e
    • Ming Lei's avatar
      block: partition: introduce hd_free_part() · b54e5ed8
      Ming Lei authored
      So the helper can be used in both generic partition
      case and part0 case.
      Signed-off-by: default avatarMing Lei <tom.leiming@gmail.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      b54e5ed8
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 21bdb584
      Linus Torvalds authored
      Pull power management and ACPI fixes from Rafael Wysocki:
       "These fix two bugs in the cpufreq core (including one recent
        regression), fix a 4.0 PCI regression related to the ACPI resources
        management and quieten an RCU-related lockdep complaint about a
        tracepoint in the suspend-to-idle code.
      
        Specifics:
      
         - Fix a recently introduced issue in the cpufreq policy object
           reinitialization that leads to CPU offline/online breakage (Viresh
           Kumar)
      
         - Make it possible to access frequency tables of offline CPUs which
           is needed by thermal management code among other things (Viresh
           Kumar)
      
         - Fix an ACPI resource management regression introduced during the
           4.0 cycle that may cause incorrect resource validation results to
           appear in 32-bit x86 kernels due to silent truncation of 64-bit
           values to 32-bit (Jiang Liu)
      
         - Fix up an RCU-related lockdep complaint about suspicious RCU usage
           in idle caused by using a suspend tracepoint in the core suspend-
           to-idle code (Rafael J Wysocki)"
      
      * tag 'pm+acpi-4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        ACPI / PCI: Fix regressions caused by resource_size_t overflow with 32-bit kernel
        cpufreq: Allow freq_table to be obtained for offline CPUs
        cpufreq: Initialize the governor again while restoring policy
        suspend-to-idle: Prevent RCU from complaining about tick_freeze()
      21bdb584
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v4.2-3' of... · 3e87ee06
      Linus Torvalds authored
      Merge tag 'platform-drivers-x86-v4.2-3' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
      
      Pull x86 platform driver fixes from Darren Hart:
       "Fix SMBIOS call handling and hwswitch state coherency in the
        dell-laptop driver.  Cleanups for intel_*_ipc drivers.  Details:
      
        dell-laptop:
         - Do not cache hwswitch state
         - Check return value of each SMBIOS call
         - Clear buffer before each SMBIOS call
      
        intel_scu_ipc:
         - Move local memory initialization out of a mutex
      
        intel_pmc_ipc:
         - Update kerneldoc formatting
         - Fix compiler casting warnings"
      
      * tag 'platform-drivers-x86-v4.2-3' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
        intel_scu_ipc: move local memory initialization out of a mutex
        intel_pmc_ipc: Update kerneldoc formatting
        dell-laptop: Do not cache hwswitch state
        dell-laptop: Check return value of each SMBIOS call
        dell-laptop: Clear buffer before each SMBIOS call
        intel_pmc_ipc: Fix compiler casting warnings
      3e87ee06
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu · f85c7124
      Linus Torvalds authored
      Pull m68knommu/coldfire fixes from Greg Ungerer:
       "Contains build fixes and updates for the ColdFire defconfigs.
      
        Specifically there is a couple of fixes that address problems building
        allnoconfig.  Also fix for enabling PCI bus on the M54xx family of
        ColdFire"
      
      * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
        m68k: enable PCI support for m5475evb defconfig
        m68k: fix io functions for ColdFire/MMU/PCI case
        m68knommu: update defconfig for ColdFire m5475evb
        m68knommu: update defconfig for ColdFire m5407c3
        m68knommu: update defconfig for ColdFire m5307c3
        m68knommu: update defconfig for ColdFire m5275evb
        m68knommu: update defconfig for ColdFire m5272c3
        m68knommu: update defconfig for ColdFire m5249evb
        m68knommu: update defconfig for m5208evb
        m68knommu: make ColdFire SoC selection a choice
        m68knommu: improve the clock configuration defaults
        m68knommu: force setting of CONFIG_CLOCK_FREQ for ColdFire
      f85c7124
  9. 16 Jul, 2015 6 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 761ab766
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A collection of fixes from the last few weeks that should go into the
        current series.  This contains:
      
         - Various fixes for the per-blkcg policy data, fixing regressions
           since 4.1.  From Arianna and Tejun
      
         - Code cleanup for bcache closure macros from me.  Really just
           flushing this out, it's been sitting in another branch for months
      
         - FIELD_SIZEOF cleanup from Maninder Singh
      
         - bio integrity oops fix from Mike
      
         - Timeout regression fix for blk-mq from Ming Lei"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        blk-mq: set default timeout as 30 seconds
        NVMe: Reread partitions on metadata formats
        bcache: don't embed 'return' statements in closure macros
        blkcg: fix blkcg_policy_data allocation bug
        blkcg: implement all_blkcgs list
        blkcg: blkcg_css_alloc() should grab blkcg_pol_mutex while iterating blkcg_policy[]
        blkcg: allow blkcg_pol_mutex to be grabbed from cgroup [file] methods
        block/blk-cgroup.c: free per-blkcg data when freeing the blkcg
        block: use FIELD_SIZEOF to calculate size of a field
        bio integrity: do not assume bio_integrity_pool exists if bioset exists
      761ab766
    • Linus Torvalds's avatar
      Merge tag 'jfs-4.2' of git://github.com/kleikamp/linux-shaggy · f76d94de
      Linus Torvalds authored
      Pull jfs fixes from David Kleikamp:
       "A couple trivial fixes and an error path fix"
      
      * tag 'jfs-4.2' of git://github.com/kleikamp/linux-shaggy:
        jfs: clean up jfs_rename and fix out of order unlock
        jfs: fix indentation on if statement
        jfs: removed a prohibited space after opening parenthesis
      f76d94de
    • Rafael J. Wysocki's avatar
      Merge branches 'pm-cpuidle', 'pm-cpufreq' and 'acpi-resources' · 17ffc8b0
      Rafael J. Wysocki authored
      * pm-cpuidle:
        suspend-to-idle: Prevent RCU from complaining about tick_freeze()
      
      * pm-cpufreq:
        cpufreq: Allow freq_table to be obtained for offline CPUs
        cpufreq: Initialize the governor again while restoring policy
      
      * acpi-resources:
        ACPI / PCI: Fix regressions caused by resource_size_t overflow with 32-bit kernel
      17ffc8b0
    • Ming Lei's avatar
      blk-mq: set default timeout as 30 seconds · e56f698b
      Ming Lei authored
      It is reasonable to set default timeout of request as 30 seconds instead of
      30000 ticks, which may be 300 seconds if HZ is 100, for example, some arm64
      based systems may choose 100 HZ.
      Signed-off-by: default avatarMing Lei <ming.lei@canonical.com>
      Fixes: c76cbbcf ("blk-mq: put blk_queue_rq_timeout together in blk_mq_init_queue()"
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      e56f698b
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security · 3aa20508
      Linus Torvalds authored
      Pull TPM bugfixes from James Morris.
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
        tpm, tpm_crb: fail when TPM2 ACPI table contents look corrupted
        tpm: Fix initialization of the cdev
      3aa20508
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma · 9090fdb9
      Linus Torvalds authored
      Pull rdma fixes from Doug Ledford:
       "Mainly fix-ups for the various 4.2 items"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (24 commits)
        IB/core: Destroy ocrdma_dev_id IDR on module exit
        IB/core: Destroy multcast_idr on module exit
        IB/mlx4: Optimize do_slave_init
        IB/mlx4: Fix memory leak in do_slave_init
        IB/mlx4: Optimize freeing of items on error unwind
        IB/mlx4: Fix use of flow-counters for process_mad
        IB/ipath: Convert use of __constant_<foo> to <foo>
        IB/ipoib: Set MTU to max allowed by mode when mode changes
        IB/ipoib: Scatter-Gather support in connected mode
        IB/ucm: Fix bitmap wrap when devnum > IB_UCM_MAX_DEVICES
        IB/ipoib: Prevent lockdep warning in __ipoib_ib_dev_flush
        IB/ucma: Fix lockdep warning in ucma_lock_files
        rds: rds_ib_device.refcount overflow
        RDMA/nes: Fix for incorrect recording of the MAC address
        RDMA/nes: Fix for resolving the neigh
        RDMA/core: Fixes for port mapper client registration
        IB/IPoIB: Fix bad error flow in ipoib_add_port()
        IB/mlx4: Do not attemp to report HCA clock offset on VFs
        IB/cm: Do not queue work to a device that's going away
        IB/srp: Avoid using uninitialized variable
        ...
      9090fdb9
  10. 15 Jul, 2015 6 commits
    • Keith Busch's avatar
      NVMe: Reread partitions on metadata formats · 7bee6074
      Keith Busch authored
      This patch has the driver automatically reread partitions if a namespace
      has a separate metadata format. Previously revalidating a disk was
      sufficient to get the correct capacity set on such formatted drives,
      but partitions that may exist would not have been surfaced.
      Reported-by: default avatarPaul Grabinar <paul.grabinar@ranbarg.com>
      Signed-off-by: default avatarKeith Busch <keith.busch@intel.com>
      Cc: Matthew Wilcox <willy@linux.intel.com>
      Tested-by: default avatarPaul Grabinar <paul.grabinar@ranbarg.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      7bee6074
    • Linus Torvalds's avatar
      Merge tag 'locks-v4.2-1' of git://git.samba.org/jlayton/linux · 16ff49a0
      Linus Torvalds authored
      Pull file locking updates from Jeff Layton:
       "I had thought that I was going to get away without a pull request this
        cycle.  There was a NFSv4 file locking problem that cropped up that I
        tried to fix in the NFSv4 code alone, but that fix has turned out to
        be problematic.  These patches fix this in the correct way.
      
        Note that this touches some NFSv4 code as well.  Ordinarily I'd wait
        for Trond to ACK this, but he's on holiday right now and the bug is
        rather nasty.  So I suggest we merge this and if he raises issues with
        it we can sort it out when he gets back"
      Acked-by: default avatarBruce Fields <bfields@fieldses.org>
      Acked-by: default avatarDan Williams <dan.j.williams@intel.com>
       [ +1 to this series fixing a 100% reproducible slab corruption +
         general protection fault in my nfs-root test environment. - Dan ]
      Acked-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
      
      * tag 'locks-v4.2-1' of git://git.samba.org/jlayton/linux:
        locks: inline posix_lock_file_wait and flock_lock_file_wait
        nfs4: have do_vfs_lock take an inode pointer
        locks: new helpers - flock_lock_inode_wait and posix_lock_inode_wait
        locks: have flock_lock_file take an inode pointer instead of a filp
        Revert "nfs: take extra reference to fl->fl_file when running a LOCKU operation"
      16ff49a0
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · df14a68d
      Linus Torvalds authored
      Pull KVM fixes from Paolo Bonzini:
      
       - Fix FPU refactoring ("kvm: x86: fix load xsave feature warning")
      
       - Fix eager FPU mode (Cc stable)
      
       - AMD bits of MTRR virtualization
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        kvm: x86: fix load xsave feature warning
        KVM: x86: apply guest MTRR virtualization on host reserved pages
        KVM: SVM: Sync g_pat with guest-written PAT value
        KVM: SVM: use NPT page attributes
        KVM: count number of assigned devices
        KVM: VMX: fix vmwrite to invalid VMCS
        KVM: x86: reintroduce kvm_is_mmio_pfn
        x86: hyperv: add CPUID bit for crash handlers
      df14a68d
    • Linus Torvalds's avatar
      Merge tag 'arc-v4.2-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc · bec33cd2
      Linus Torvalds authored
      Pull ARC fixes from Vineet Gupta:
       - Makefile changes (top-level+ARC) reinstates -O3 builds (regression
         since 3.16)
       - IDU intc related fixes, IRQ affinity
       - patch to make bitops safer for ARC
       - perf fix from Alexey to remove signed PC braino
       - Futex backend gets llock/scond support
      
      * tag 'arc-v4.2-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
        ARCv2: support HS38 releases
        ARC: make sure instruction_pointer() returns unsigned value
        ARC: slightly refactor macros for boot logging
        ARC: Add llock/scond to futex backend
        arc:irqchip: prepare for drivers/irqchip/irqchip.h removal
        ARC: Make ARC bitops "safer" (add anti-optimization)
        ARCv2: [axs103] bump CPU frequency from 75 to 90 MHZ
        ARCv2: intc: IDU: Fix potential race in installing a chained IRQ handler
        ARCv2: intc: IDU: support irq affinity
        ARC: fix unused var wanring
        ARC: Don't memzero twice in dma_alloc_coherent for __GFP_ZERO
        ARC: Override toplevel default -O2 with -O3
        kbuild: Allow arch Makefiles to override {cpp,ld,c}flags
        ARCv2: guard SLC DMA ops with spinlock
        ARC: Kconfig: better way to disable ARC_HAS_LLSC for ARC_CPU_750D
      bec33cd2
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux · 9c69481e
      Linus Torvalds authored
      Pull s390 fixes from Martin Schwidefsky:
       "One improvement for the zcrypt driver, the quality attribute for the
        hwrng device has been missing.  Without it the kernel entropy seeding
        will not happen automatically.
      
        And six bug fixes, the most important one is the fix for the vector
        register corruption due to machine checks"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
        s390/nmi: fix vector register corruption
        s390/process: fix sfpc inline assembly
        s390/dasd: fix kernel panic when alias is set offline
        s390/sclp: clear upper register halves in _sclp_print_early
        s390/oprofile: fix compile error
        s390/sclp: fix compile error
        s390/zcrypt: enable s390 hwrng to seed kernel entropy
      9c69481e
    • Dave Kleikamp's avatar
      jfs: clean up jfs_rename and fix out of order unlock · 26456955
      Dave Kleikamp authored
      The end of jfs_rename(), which is also used by the error paths,
      included a call to IWRITE_UNLOCK(new_ip) after labels out1, out2
      and out3. If we come in through these labels, IWRITE_LOCK() has not
      been called yet.
      
      In moving that call to the correct spot, I also moved some
      exceptional truncate code earlier as well, since the early error
      paths don't need to deal with it, and I renamed out4: to out_tx: so
      a future patch by Jan Kara doesn't need to deal with renumbering or
      confusing out-of-order labels.
      Signed-off-by: default avatarDave Kleikamp <dave.kleikamp@oracle.com>
      26456955