1. 21 Oct, 2015 10 commits
  2. 19 Oct, 2015 9 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 1099f860
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Account for extra headroom in ath9k driver, from Felix Fietkau.
      
       2) Fix OOPS in pppoe driver due to incorrect socket state transition,
          from Guillaume Nault.
      
       3) Kill memory leak in amd-xgbe debugfx, from Geliang Tang.
      
       4) Power management fixes for iwlwifi, from Johannes Berg.
      
       5) Fix races in reqsk_queue_unlink(), from Eric Dumazet.
      
       6) Fix dst_entry usage in ARP replies, from Jiri Benc.
      
       7) Cure OOPSes with SO_GET_FILTER, from Daniel Borkmann.
      
       8) Missing allocation failure check in amd-xgbe, from Tom Lendacky.
      
       9) Various resource allocation/freeing cures in DSA< from Neil
          Armstrong.
      
      10) A series of bug fixes in the openvswitch conntrack support, from
          Joe Stringer.
      
      11) Fix two cases (BPF and act_mirred) where we have to clean the sender
          cpu stored in the SKB before transmitting.  From WANG Cong and
          Alexei Starovoitov.
      
      12) Disable VLAN filtering in promiscuous mode in mlx5 driver, from
          Achiad Shochat.
      
      13) Older bnx2x chips cannot do 4-tuple UDP hashing, so prevent this
          configuration via ethtool.  From Yuval Mintz.
      
      14) Don't call rt6_uncached_list_flush_dev() from rt6_ifdown() when
          'dev' is NULL, from Eric Biederman.
      
      15) Prevent stalled link synchronization in tipc, from Jon Paul Maloy.
      
      16) kcalloc() gstrings ethtool buffer before having driver fill it in,
          in order to prevent kernel memory leaking.  From Joe Perches.
      
      17) Fix mixxing rt6_info initialization for blackhole routes, from
          Martin KaFai Lau.
      
      18) Kill VLAN regression in via-rhine, from Andrej Ota.
      
      19) Missing pfmemalloc check in sk_add_backlog(), from Eric Dumazet.
      
      20) Fix spurious MSG_TRUNC signalling in netlink dumps, from Ronen Arad.
      
      21) Scrube SKBs when pushing them between namespaces in openvswitch,
          from Joe Stringer.
      
      22) bcmgenet enables link interrupts too early, fix from Florian
          Fainelli.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (92 commits)
        net: bcmgenet: Fix early link interrupt enabling
        tunnels: Don't require remote endpoint or ID during creation.
        openvswitch: Scrub skb between namespaces
        xen-netback: correctly check failed allocation
        net: asix: add support for the Billionton GUSB2AM-1G-B USB adapter
        netlink: Trim skb to alloc size to avoid MSG_TRUNC
        net: add pfmemalloc check in sk_add_backlog()
        via-rhine: fix VLAN receive handling regression.
        ipv6: Initialize rt6_info properly in ip6_blackhole_route()
        ipv6: Move common init code for rt6_info to a new function rt6_info_init()
        Bluetooth: Fix initializing conn_params in scan phase
        Bluetooth: Fix conn_params list update in hci_connect_le_scan_cleanup
        Bluetooth: Fix remove_device behavior for explicit connects
        Bluetooth: Fix LE reconnection logic
        Bluetooth: Fix reference counting for LE-scan based connections
        Bluetooth: Fix double scan updates
        mlxsw: core: Fix race condition in __mlxsw_emad_transmit
        tipc: move fragment importance field to new header position
        ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
        tipc: eliminate risk of stalled link synchronization
        ...
      1099f860
    • Florian Fainelli's avatar
      net: bcmgenet: Fix early link interrupt enabling · 37850e37
      Florian Fainelli authored
      Link interrupts are enabled in init_umac(), which is too early for us to
      process them since we do not yet have a valid PHY device pointer. On
      BCM7425 chips for instance, we will crash calling phy_mac_interrupt()
      because phydev is NULL.
      
      Fix this by moving the link interrupts enabling in
      bcmgenet_netif_start(), under a specific function:
      bcmgenet_link_intr_enable() and while at it, update the comments
      surrounding the code.
      
      Fixes: 6cc8e6d4 ("net: bcmgenet: Delay PHY initialization to bcmgenet_open()")
      Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      37850e37
    • David S. Miller's avatar
      Merge tag 'wireless-drivers-for-davem-2015-10-17' of... · afc050dd
      David S. Miller authored
      Merge tag 'wireless-drivers-for-davem-2015-10-17' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
      
      Kalle Valo says:
      
      ====================
      iwlwifi:
      
      * mvm: flush fw_dump_wk when mvm fails to start
      * mvm: init card correctly on ctkill exit check
      * pci: add a few more PCI subvendor IDs for the 7265 series
      * fix firmware filename for 3160
      * mvm: clear csa countdown when AP is stopped
      * mvm: fix D3 firmware PN programming
      * dvm: fix D3 firmware PN programming
      * mvm: fix D3 CCMP TX PN assignment
      
      rtlwifi:
      
      * rtl8821ae: Fix system lockups on boot
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      afc050dd
    • Jesse Gross's avatar
      tunnels: Don't require remote endpoint or ID during creation. · e277de5f
      Jesse Gross authored
      Before lightweight tunnels existed, it really didn't make sense to
      create a tunnel that was not fully specified, such as without a
      destination IP address - the resulting packets would go nowhere.
      However, with lightweight tunnels, the opposite is true - it doesn't
      make sense to require this information when it will be provided later
      on by the route. This loosens the requirements for this information.
      
      An alternative would be to allow the relaxed version only when
      COLLECT_METADATA is enabled. However, since there are several
      variations on this theme (such as NBMA tunnels in GRE), just dropping
      the restrictions seems the most consistent across tunnels and with
      the existing configuration.
      
      CC: John Linville <linville@tuxdriver.com>
      Signed-off-by: default avatarJesse Gross <jesse@nicira.com>
      Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e277de5f
    • Joe Stringer's avatar
      openvswitch: Scrub skb between namespaces · 740dbc28
      Joe Stringer authored
      If OVS receives a packet from another namespace, then the packet should
      be scrubbed. However, people have already begun to rely on the behaviour
      that skb->mark is preserved across namespaces, so retain this one field.
      
      This is mainly to address information leakage between namespaces when
      using OVS internal ports, but by placing it in ovs_vport_receive() it is
      more generally applicable, meaning it should not be overlooked if other
      port types are allowed to be moved into namespaces in future.
      Signed-off-by: default avatarJoe Stringer <joestringer@nicira.com>
      Acked-by: default avatarPravin B Shelar <pshelar@nicira.com>
      Acked-by: default avatarThomas Graf <tgraf@suug.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      740dbc28
    • David S. Miller's avatar
      Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth · a5d6f7dd
      David S. Miller authored
      Johan Hedberg says:
      
      ====================
      pull request: bluetooth 2015-10-16
      
      First of all, sorry for the late set of patches for the 4.3 cycle. We
      just finished an intensive week of testing at the Bluetooth UnPlugFest
      and discovered (and fixed) issues there. Unfortunately a few issues
      affect 4.3-rc5 in a way that they break existing Bluetooth LE mouse and
      keyboard support.
      
      The regressions result from supporting LE privacy in conjunction with
      scanning for Resolvable Private Addresses before connecting. A feature
      that has been tested heavily (including automated unit tests), but sadly
      some regressions slipped in. The UnPlugFest with its multitude of test
      platforms is a good battle testing ground for uncovering every corner
      case.
      
      The patches in this pull request focus only on fixing the regressions in
      4.3-rc5. The patches look a bit larger since we also added comments in
      the critical sections of the fixes to improve clarity.
      
      I would appreciate if we can get these regression fixes to Linus
      quickly. Please let me know if there are any issues pulling. Thanks.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a5d6f7dd
    • Insu Yun's avatar
      xen-netback: correctly check failed allocation · 833b8f18
      Insu Yun authored
      Since vzalloc can be failed in memory pressure,
      writes -ENOMEM to xenstore to indicate error.
      Signed-off-by: default avatarInsu Yun <wuninsu@gmail.com>
      Acked-by: default avatarWei Liu <wei.liu2@citrix.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      833b8f18
    • Chia-Sheng Chang's avatar
      net: asix: add support for the Billionton GUSB2AM-1G-B USB adapter · 80083a3c
      Chia-Sheng Chang authored
      Just another AX88178-based 10/100/1000 USB-to-Ethernet dongle. This one
      shows up in lsusb as: "ID 08dd:0114 Billionton Systems, Inc".
      Signed-off-by: default avatarChia-Sheng Chang <changchias@gmail.com>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Luca Ceresoli <luca@lucaceresoli.net>
      Cc: Christoph Jaeger <cj@linux.com>
      Cc: "Woojung.Huh@microchip.com" <Woojung.Huh@microchip.com>
      Cc: Matthew Garrett <mjg59@srcf.ucam.org>
      Cc: Markus Elfring <elfring@users.sourceforge.net>
      Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
      Cc: netdev@vger.kernel.org
      Cc: linux-usb@vger.kernel.org
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      80083a3c
    • Arad, Ronen's avatar
      netlink: Trim skb to alloc size to avoid MSG_TRUNC · db65a3aa
      Arad, Ronen authored
      netlink_dump() allocates skb based on the calculated min_dump_alloc or
      a per socket max_recvmsg_len.
      min_alloc_size is maximum space required for any single netdev
      attributes as calculated by rtnl_calcit().
      max_recvmsg_len tracks the user provided buffer to netlink_recvmsg.
      It is capped at 16KiB.
      The intention is to avoid small allocations and to minimize the number
      of calls required to obtain dump information for all net devices.
      
      netlink_dump packs as many small messages as could fit within an skb
      that was sized for the largest single netdev information. The actual
      space available within an skb is larger than what is requested. It could
      be much larger and up to near 2x with align to next power of 2 approach.
      
      Allowing netlink_dump to use all the space available within the
      allocated skb increases the buffer size a user has to provide to avoid
      truncaion (i.e. MSG_TRUNG flag set).
      
      It was observed that with many VLANs configured on at least one netdev,
      a larger buffer of near 64KiB was necessary to avoid "Message truncated"
      error in "ip link" or "bridge [-c[ompressvlans]] vlan show" when
      min_alloc_size was only little over 32KiB.
      
      This patch trims skb to allocated size in order to allow the user to
      avoid truncation with more reasonable buffer size.
      Signed-off-by: default avatarRonen Arad <ronen.arad@intel.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      db65a3aa
  3. 18 Oct, 2015 3 commits
    • Linus Torvalds's avatar
      Linux 4.3-rc6 · 7379047d
      Linus Torvalds authored
      7379047d
    • Linus Torvalds's avatar
      Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · c44b3255
      Linus Torvalds authored
      Pull i2c fixes from Wolfram Sang:
       "Here are some bugfixes for the I2C subsystem.
      
        Kieran found a flaw in the recently renewed wake irq handling.  Mika
        handled a user bug report where the ACPI info turned out to be
        unusable.  I updated MAINTAINERS so that such bug reports will sooner
        get to the right people.  Geert pointed me to a problem of some i2c
        drivers regarding PM which I fixed"
      
      * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        i2c: designware: Do not use parameters from ACPI on Dell Inspiron 7348
        MAINTAINERS: add maintainers for Synopsis Designware I2C drivers
        i2c: designware-platdrv: enable RuntimePM before registering to the core
        i2c: s3c2410: enable RuntimePM before registering to the core
        i2c: rcar: enable RuntimePM before registering to the core
        i2c: return probe deferred status on dev_pm_domain_attach
      c44b3255
    • Mika Westerberg's avatar
      i2c: designware: Do not use parameters from ACPI on Dell Inspiron 7348 · 56d4b8a2
      Mika Westerberg authored
      ACPI SSCN/FMCN methods were originally added because then the platform can
      provide the most accurate HCNT/LCNT values to the driver. However, this
      seems not to be true for Dell Inspiron 7348 where using these causes the
      touchpad to fail in boot:
      
        i2c_hid i2c-DLL0675:00: failed to retrieve report from device.
        i2c_designware INT3433:00: i2c_dw_handle_tx_abort: lost arbitration
        i2c_hid i2c-DLL0675:00: failed to retrieve report from device.
        i2c_designware INT3433:00: controller timed out
      
      The values received from ACPI are (in fast mode):
      
        HCNT: 72
        LCNT: 160
      
      this translates to following timings (input clock is 100MHz on Broadwell):
      
        tHIGH: 720 ns (spec min 600 ns)
        tLOW: 1600 ns (spec min 1300 ns)
        Bus period: 2920 ns (assuming 300 ns tf and tr)
        Bus speed: 342.5 kHz
      
      Both tHIGH and tLOW are within the I2C specification.
      
      The calculated values when ACPI parameters are not used are (in fast mode):
      
        HCNT: 87
        LCNT: 159
      
      which translates to:
      
        tHIGH: 870 ns (spec min 600 ns)
        tLOW: 1590 ns (spec min 1300 ns)
        Bus period 3060 ns (assuming 300 ns tf and tr)
        Bus speed 326.8 kHz
      
      These values are also within the I2C specification.
      
      Since both ACPI and calculated values meet the I2C specification timing
      requirements it is hard to say why the touchpad does not function properly
      with the ACPI values except that the bus speed is higher in this case (but
      still well below the max 400kHz).
      
      Solve this by adding DMI quirk to the driver that disables using ACPI
      parameters on this particulare machine.
      Reported-by: default avatarPavel Roskin <plroskin@gmail.com>
      Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
      Tested-by: default avatarPavel Roskin <plroskin@gmail.com>
      Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
      Cc: stable@kernel.org
      56d4b8a2
  4. 17 Oct, 2015 4 commits
  5. 16 Oct, 2015 14 commits
    • Linus Torvalds's avatar
      Merge tag 'dm-4.3-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm · 045ce743
      Linus Torvalds authored
      Pull device mapper fixes from Mike Snitzer:
       "Two DM target error path cleanup fixes (one for stable in DM thinp and
        one for a v4.3-rc5 thinko in DM snapshot)"
      
      * tag 'dm-4.3-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
        dm thin: fix missing pool reference count decrement in pool_ctr error path
        dm snapshot persistent: fix missing cleanup in persistent_ctr error path
      045ce743
    • Linus Torvalds's avatar
      Merge branch 'for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs · 6aa8ca4d
      Linus Torvalds authored
      Pull btrfs fixes from Chris Mason:
       "I have two more bug fixes for btrfs.
      
        My commit fixes a bug we hit last week at FB, a combination of lots of
        hard links and an admin command to resolve inode numbers.
      
        Dave is adding checks to make sure balance on current kernels ignores
        filters it doesn't understand.  The penalty for being wrong is just
        doing more work (not crashing etc), but it's a good fix"
      
      * 'for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
        btrfs: fix use after free iterating extrefs
        btrfs: check unsupported filters in balance arguments
      6aa8ca4d
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client · 59bcce12
      Linus Torvalds authored
      Pull Ceph fixes from Sage Weil:
       "Just two small items from Ilya:
      
        The first patch fixes the RBD readahead to grab full objects.  The
        second fixes the write ops to prevent undue promotion when a cache
        tier is configured on the server side"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
        rbd: use writefull op for object size writes
        rbd: set max_sectors explicitly
      59bcce12
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-4.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · a4c4c49a
      Linus Torvalds authored
      Pull power management and ACPI fixes from Rafael Wysocki:
       "These fix two recent regressions (ACPICA, the generic power domains
        framework) and one crash that may happen on specific hardware
        supported since 4.1 (intel_pstate).
      
        Specifics:
      
         - Fix a regression introduced by a recent ACPICA cleanup that
           uncovered a latent bug (Lv Zheng).
      
         - Fix a recent regression in the generic power domains framework that
           may cause it to violate PM QoS latency constraints in some cases
           (Ulf Hansson).
      
         - Fix an intel_pstate driver crash on the Knights Landing chips that
           do not update the MPERF counter as often as expected by the driver
           which may result in a divide by 0 (Srinivas Pandruvada)"
      
      * tag 'pm+acpi-4.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        cpufreq: intel_pstate: Fix divide by zero on Knights Landing (KNL)
        ACPICA: Tables: Fix FADT dependency regression
        PM / Domains: Fix validation of latency constraints in genpd governor
      a4c4c49a
    • Linus Torvalds's avatar
      Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux · 8b7b56f3
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Nothing too crazy or exciting:
      
         - two MAINTAINERS entries that I didn't see the point in delaying.
         - one drm mst fix to stop sending uninitialised data to monitors
         - two amdgpu fixes
         - one radeon mst tiling fix
         - one vmwgfx regression fix
         - one virtio warning fix.
      
        I have found one locking problem that needs a bit of reorg to fix, but
        I'm not sure it's worth putting in -fixes as I don't think we've seen
        it hit in the real world ever, I just found it using the virtio-gpu
        driver when working on it.  I'll possibly send it next week once I've
        time to discuss with Daniel"
      
      * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
        drm/virtio: use %llu format string form atomic64_t
        MAINTAINERS: Add myself as maintainer for the gma500 driver
        MAINTAINERS: add a maintainer for the atmel-hlcdc DRM driver
        drm/amdgpu: Keep the pflip interrupts always enabled v7
        drm/amdgpu: adjust default dispclk (v2)
        drm/dp/mst: make mst i2c transfer code more robust.
        drm/radeon: attach tile property to mst connector
        drm/vmwgfx: Fix kernel NULL pointer dereference on older hardware
      8b7b56f3
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · ebb65c81
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       - Re-enable CONFIG_SCSI_DH in our defconfigs
       - Remove unused os_area_db_id_video_mode
       - cxl: fix leak of IRQ names in cxl_free_afu_irqs() from Andrew
       - cxl: fix leak of ctx->irq_bitmap when releasing context via kernel API from Andrew
       - cxl: fix leak of ctx->mapping when releasing kernel API contexts from Andrew
       - cxl: Workaround malformed pcie packets on some cards from Philippe
       - cxl: Fix number of allocated pages in SPA from Christophe Lombard
       - Fix checkstop in native_hpte_clear() with lockdep from Cyril
       - Panic on unhandled Machine Check on powernv from Daniel
       - selftests/powerpc: Fix build failure of load_unaligned_zeropad test
      
      * tag 'powerpc-4.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        selftests/powerpc: Fix build failure of load_unaligned_zeropad test
        powerpc/powernv: Panic on unhandled Machine Check
        powerpc: Fix checkstop in native_hpte_clear() with lockdep
        cxl: Fix number of allocated pages in SPA
        cxl: Workaround malformed pcie packets on some cards
        cxl: fix leak of ctx->mapping when releasing kernel API contexts
        cxl: fix leak of ctx->irq_bitmap when releasing context via kernel API
        cxl: fix leak of IRQ names in cxl_free_afu_irqs()
        powerpc/ps3: Remove unused os_area_db_id_video_mode
        powerpc/configs: Re-enable CONFIG_SCSI_DH
      ebb65c81
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 3d875182
      Linus Torvalds authored
      Merge misc fixes from Andrew Morton:
       "6 fixes"
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>:
        sh: add copy_user_page() alias for __copy_user()
        lib/Kconfig: ZLIB_DEFLATE must select BITREVERSE
        mm, dax: fix DAX deadlocks
        memcg: convert threshold to bytes
        builddeb: remove debian/files before build
        mm, fs: obey gfp_mapping for add_to_page_cache()
      3d875182
    • Ross Zwisler's avatar
      sh: add copy_user_page() alias for __copy_user() · 934ed25e
      Ross Zwisler authored
      copy_user_page() is needed by DAX.  Without this we get a compile error
      for DAX on SH:
      
        fs/dax.c:280:2: error: implicit declaration of function `copy_user_page' [-Werror=implicit-function-declaration]
          copy_user_page(vto, (void __force *)vfrom, vaddr, to);
            ^
      
      This was done with a random config that happened to include DAX support.
      
      This patch has only been compile tested.
      Signed-off-by: default avatarRoss Zwisler <ross.zwisler@linux.intel.com>
      Reported-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
      Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
      Cc: Matthew Wilcox <willy@linux.intel.com>
      Cc: Matt Fleming <matt@codeblueprint.co.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      934ed25e
    • Andrew Morton's avatar
      lib/Kconfig: ZLIB_DEFLATE must select BITREVERSE · 1fd4e5c3
      Andrew Morton authored
      lib/built-in.o: In function `__bitrev32':
      deftree.c:(.text+0x1e799): undefined reference to `byte_rev_table'
      deftree.c:(.text+0x1e7a0): undefined reference to `byte_rev_table'
      deftree.c:(.text+0x1e7b4): undefined reference to `byte_rev_table'
      deftree.c:(.text+0x1e7c1): undefined reference to `byte_rev_table'
      
      Anything which uses bitrevX() has to select BITREVERSE, to grab
      lib/bitrev.o.
      Reported-by: default avatarJim Davis <jim.epost@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      1fd4e5c3
    • Ross Zwisler's avatar
      mm, dax: fix DAX deadlocks · 0f90cc66
      Ross Zwisler authored
      The following two locking commits in the DAX code:
      
      commit 84317297 ("dax: fix race between simultaneous faults")
      commit 46c043ed ("mm: take i_mmap_lock in unmap_mapping_range() for DAX")
      
      introduced a number of deadlocks and other issues which need to be fixed
      for the v4.3 kernel.  The list of issues in DAX after these commits
      (some newly introduced by the commits, some preexisting) can be found
      here:
      
        https://lkml.org/lkml/2015/9/25/602 (Subject: "Re: [PATCH] dax: fix deadlock in __dax_fault").
      
      This undoes most of the changes introduced by those two commits,
      essentially returning us to the DAX locking scheme that was used in
      v4.2.
      Signed-off-by: default avatarRoss Zwisler <ross.zwisler@linux.intel.com>
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Cc: Dan Williams <dan.j.williams@intel.com>
      Tested-by: default avatarDave Chinner <dchinner@redhat.com>
      Cc: Jan Kara <jack@suse.com>
      Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
      Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0f90cc66
    • Shaohua Li's avatar
      memcg: convert threshold to bytes · 424cdc14
      Shaohua Li authored
      page_counter_memparse() returns pages for the threshold, while
      mem_cgroup_usage() returns bytes for memory usage.  Convert the
      threshold to bytes.
      
      Fixes: 3e32cb2e ("memcg: rename cgroup_event to mem_cgroup_event").
      Signed-off-by: default avatarShaohua Li <shli@fb.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Acked-by: default avatarMichal Hocko <mhocko@suse.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      424cdc14
    • Riku Voipio's avatar
      builddeb: remove debian/files before build · 8d740a37
      Riku Voipio authored
      Commit 3716001b ("deb-pkg: add source package") added the ability to
      create a debian changelog file.  This exposed that previously the
      builddeb script hasn't cleared debian/files between builds.
      
      As debian/files keeps accumulating entries, the changes file will end up
      growing indefinelty.  With outdated entries in debian/files, builddeb
      script will exit with failure.  This regression impacts those who use
      "make deb-pkg" target to build kernel into a .deb package and never use
      "make mrproper" or other means to clean kernel tree from generated
      directories.
      
      To fix the regression, remove debian/files before starting build and in
      the generated clean rule.
      
      Fixes: 3716001b ("deb-pkg: add source package")
      Signed-off-by: default avatarRiku Voipio <riku.voipio@linaro.org>
      Reported-by: default avatarDoug Smythies <dsmythies@telus.net>
      Tested-by: default avatarDoug Smythies <dsmythies@telus.net>
      Tested-by: default avatarKalle Valo <kvalo@codeaurora.org>
      Acked-by: default avatarBen Hutchings <ben@decadent.org.uk>
      Cc: Michal Marek <mmarek@suse.cz>
      Cc: maximilian attems <maks@stro.at>
      Cc: Chris J Arges <chris.j.arges@canonical.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8d740a37
    • Michal Hocko's avatar
      mm, fs: obey gfp_mapping for add_to_page_cache() · 063d99b4
      Michal Hocko authored
      Commit 6afdb859 ("mm: do not ignore mapping_gfp_mask in page cache
      allocation paths") has caught some users of hardcoded GFP_KERNEL used in
      the page cache allocation paths.  This, however, wasn't complete and
      there were others which went unnoticed.
      
      Dave Chinner has reported the following deadlock for xfs on loop device:
      : With the recent merge of the loop device changes, I'm now seeing
      : XFS deadlock on my single CPU, 1GB RAM VM running xfs/073.
      :
      : The deadlocked is as follows:
      :
      : kloopd1: loop_queue_read_work
      :       xfs_file_iter_read
      :       lock XFS inode XFS_IOLOCK_SHARED (on image file)
      :       page cache read (GFP_KERNEL)
      :       radix tree alloc
      :       memory reclaim
      :       reclaim XFS inodes
      :       log force to unpin inodes
      :       <wait for log IO completion>
      :
      : xfs-cil/loop1: <does log force IO work>
      :       xlog_cil_push
      :       xlog_write
      :       <loop issuing log writes>
      :               xlog_state_get_iclog_space()
      :               <blocks due to all log buffers under write io>
      :               <waits for IO completion>
      :
      : kloopd1: loop_queue_write_work
      :       xfs_file_write_iter
      :       lock XFS inode XFS_IOLOCK_EXCL (on image file)
      :       <wait for inode to be unlocked>
      :
      : i.e. the kloopd, with it's split read and write work queues, has
      : introduced a dependency through memory reclaim. i.e. that writes
      : need to be able to progress for reads make progress.
      :
      : The problem, fundamentally, is that mpage_readpages() does a
      : GFP_KERNEL allocation, rather than paying attention to the inode's
      : mapping gfp mask, which is set to GFP_NOFS.
      :
      : The didn't used to happen, because the loop device used to issue
      : reads through the splice path and that does:
      :
      :       error = add_to_page_cache_lru(page, mapping, index,
      :                       GFP_KERNEL & mapping_gfp_mask(mapping));
      
      This has changed by commit aa4d8616 ("block: loop: switch to VFS
      ITER_BVEC").
      
      This patch changes mpage_readpage{s} to follow gfp mask set for the
      mapping.  There are, however, other places which are doing basically the
      same.
      
      lustre:ll_dir_filler is doing GFP_KERNEL from the function which
      apparently uses GFP_NOFS for other allocations so let's make this
      consistent.
      
      cifs:readpages_get_pages is called from cifs_readpages and
      __cifs_readpages_from_fscache called from the same path obeys mapping
      gfp.
      
      ramfs_nommu_expand_for_mapping is hardcoding GFP_KERNEL as well
      regardless it uses mapping_gfp_mask for the page allocation.
      
      ext4_mpage_readpages is the called from the page cache allocation path
      same as read_pages and read_cache_pages
      
      As I've noticed in my previous post I cannot say I would be happy about
      sprinkling mapping_gfp_mask all over the place and it sounds like we
      should drop gfp_mask argument altogether and use it internally in
      __add_to_page_cache_locked that would require all the filesystems to use
      mapping gfp consistently which I am not sure is the case here.  From a
      quick glance it seems that some file system use it all the time while
      others are selective.
      Signed-off-by: default avatarMichal Hocko <mhocko@suse.com>
      Reported-by: default avatarDave Chinner <david@fromorbit.com>
      Cc: "Theodore Ts'o" <tytso@mit.edu>
      Cc: Ming Lei <ming.lei@canonical.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Oleg Drokin <oleg.drokin@intel.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Christoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      063d99b4
    • Ilya Dryomov's avatar
      rbd: use writefull op for object size writes · e30b7577
      Ilya Dryomov authored
      This covers only the simplest case - an object size sized write, but
      it's still useful in tiering setups when EC is used for the base tier
      as writefull op can be proxied, saving an object promotion.
      
      Even though updating ceph_osdc_new_request() to allow writefull should
      just be a matter of fixing an assert, I didn't do it because its only
      user is cephfs.  All other sites were updated.
      
      Reflects ceph.git commit 7bfb7f9025a8ee0d2305f49bf0336d2424da5b5b.
      Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
      Reviewed-by: default avatarAlex Elder <elder@linaro.org>
      e30b7577