1. 11 Mar, 2015 1 commit
  2. 02 Mar, 2015 2 commits
  3. 23 Feb, 2015 4 commits
  4. 18 Feb, 2015 1 commit
    • Antonio Ospite's avatar
      HID: sony: Fix a WARNING shown when rmmod-ing the driver · 6c40065f
      Antonio Ospite authored
      ida_destroy() must be called _after_ all the devices have been
      unregistered; otherwise, when calling "rmmod hid_sony" with devices
      still plugged in, the following warning would show up because of calls
      to ida_simple_remove() on a destroyed ID allocator:
      
      ------------[ cut here ]------------
      WARNING: CPU: 0 PID: 5509 at lib/idr.c:1052 ida_simple_remove+0x26/0x50()
      ida_remove called for id=0 which is not allocated.
      Modules linked in: ...
      CPU: 0 PID: 5509 Comm: rmmod Not tainted 3.19.0-rc6-ao2 #35
      Hardware name: System manufacturer System Product Name/M2N-MX SE, BIOS 0501    03/20/2008
       0000000000000000 ffffffff8176320d ffffffff815b3a88 ffff880036f7fdd8
       ffffffff8106ce01 0000000000000000 ffffffffa07658e0 0000000000000246
       ffff88005077d8b8 ffff88005077d8d0 ffffffff8106ce7a ffffffff81763260
      Call Trace:
       [<ffffffff815b3a88>] ? dump_stack+0x40/0x50
       [<ffffffff8106ce01>] ? warn_slowpath_common+0x81/0xb0
       [<ffffffff8106ce7a>] ? warn_slowpath_fmt+0x4a/0x50
       [<ffffffff812ccb86>] ? ida_simple_remove+0x26/0x50
       [<ffffffffa0762dc8>] ? sony_remove+0x58/0xe0 [hid_sony]
       [<ffffffffa00fff15>] ? hid_device_remove+0x65/0xd0 [hid]
       [<ffffffff8140425e>] ? __device_release_driver+0x7e/0x100
       [<ffffffff81404c70>] ? driver_detach+0xa0/0xb0
       [<ffffffff81403ee5>] ? bus_remove_driver+0x55/0xe0
       [<ffffffffa01000ff>] ? hid_unregister_driver+0x2f/0xa0 [hid]
       [<ffffffff810e45bf>] ? SyS_delete_module+0x1bf/0x270
       [<ffffffff81014089>] ? do_notify_resume+0x69/0xa0
       [<ffffffff815b952d>] ? system_call_fastpath+0x16/0x1b
      ---[ end trace bc794b3d22c30ede ]---
      Signed-off-by: default avatarAntonio Ospite <ao2@ao2.it>
      Acked-by: default avatarFrank Praznik <frank.praznik@oh.rr.com>
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
      6c40065f
  5. 17 Feb, 2015 4 commits
  6. 12 Feb, 2015 1 commit
  7. 11 Feb, 2015 5 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid · 870fd0f5
      Linus Torvalds authored
      Pull HID updates from Jiri Kosina:
       "Updates for HID code
      
         - improveements of Logitech HID++ procotol implementation, from
           Benjamin Tissoires
      
         - support for composite RMI devices, from Andrew Duggan
      
         - new driver for BETOP controller, from Huang Bo
      
         - fixup for conflicting mapping in HID core between PC-101/103/104
           and PC-102/105 keyboards from David Herrmann
      
         - new hardware support and fixes in Wacom driver, from Ping Cheng
      
         - assorted small fixes and device ID additions all over the place"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (33 commits)
        HID: wacom: add support for Cintiq 27QHD and 27QHD touch
        HID: wacom: consolidate input capability settings for pen and touch
        HID: wacom: make sure touch arbitration is applied consistently
        HID: pidff: Fix initialisation forMicrosoft Sidewinder FF Pro 2
        HID: hyperv: match wait_for_completion_timeout return type
        HID: wacom: Report ABS_MISC event for Cintiq Companion Hybrid
        HID: Use Kbuild idiom in Makefiles
        HID: do not bind to Microchip Pick16F1454
        HID: hid-lg4ff: use DEVICE_ATTR_RW macro
        HID: hid-lg4ff: fix sysfs attribute permission
        HID: wacom: peport In Range event according to the spec
        HID: wacom: process invalid Cintiq and Intuos data in wacom_intuos_inout()
        HID: rmi: Add support for the touchpad in the Razer Blade 14 laptop
        HID: rmi: Support touchpads with external buttons
        HID: rmi: Use hid_report_len to compute the size of reports
        HID: logitech-hidpp: store the name of the device in struct hidpp
        HID: microsoft: add support for Japanese Surface Type Cover 3
        HID: fixup the conflicting keyboard mappings quirk
        HID: apple: fix battery support for the 2009 ANSI wireless keyboard
        HID: fix Kconfig text
        ...
      870fd0f5
    • Linus Torvalds's avatar
      sata_dwc_460ex: disable COMPILE_TEST again · 06cc01a0
      Linus Torvalds authored
      Commit 84683a7e ("sata_dwc_460ex: enable COMPILE_TEST for the
      driver") enabled this driver for non-ppc460-ex platforms, but it was
      then disabled for ARM and ARM64 by commit 2de5a9c0 ("sata_dwc_460ex:
      disable compilation on ARM and ARM64") because it's too noisy and
      broken.
      
      This disabled is entirely, because it's too noisy on x86-64 too, and
      there's no point in disabling architectures one by one.  At a minimum,
      the code isn't 64-bit clean, and even on 32-bit it is questionable
      whether it makes sense.
      
      Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
      Cc: Tejun Heo <tj@kernel.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      06cc01a0
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 992de5a8
      Linus Torvalds authored
      Merge misc updates from Andrew Morton:
       "Bite-sized chunks this time, to avoid the MTA ratelimiting woes.
      
         - fs/notify updates
      
         - ocfs2
      
         - some of MM"
      
      That laconic "some MM" is mainly the removal of remap_file_pages(),
      which is a big simplification of the VM, and which gets rid of a *lot*
      of random cruft and special cases because we no longer support the
      non-linear mappings that it used.
      
      From a user interface perspective, nothing has changed, because the
      remap_file_pages() syscall still exists, it's just done by emulating the
      old behavior by creating a lot of individual small mappings instead of
      one non-linear one.
      
      The emulation is slower than the old "native" non-linear mappings, but
      nobody really uses or cares about remap_file_pages(), and simplifying
      the VM is a big advantage.
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits)
        memcg: zap memcg_slab_caches and memcg_slab_mutex
        memcg: zap memcg_name argument of memcg_create_kmem_cache
        memcg: zap __memcg_{charge,uncharge}_slab
        mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check
        mm: hugetlb: fix type of hugetlb_treat_as_movable variable
        mm, hugetlb: remove unnecessary lower bound on sysctl handlers"?
        mm: memory: merge shared-writable dirtying branches in do_wp_page()
        mm: memory: remove ->vm_file check on shared writable vmas
        xtensa: drop _PAGE_FILE and pte_file()-related helpers
        x86: drop _PAGE_FILE and pte_file()-related helpers
        unicore32: drop pte_file()-related helpers
        um: drop _PAGE_FILE and pte_file()-related helpers
        tile: drop pte_file()-related helpers
        sparc: drop pte_file()-related helpers
        sh: drop _PAGE_FILE and pte_file()-related helpers
        score: drop _PAGE_FILE and pte_file()-related helpers
        s390: drop pte_file()-related helpers
        parisc: drop _PAGE_FILE and pte_file()-related helpers
        openrisc: drop _PAGE_FILE and pte_file()-related helpers
        nios2: drop _PAGE_FILE and pte_file()-related helpers
        ...
      992de5a8
    • Linus Torvalds's avatar
      Merge tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw · b2718bff
      Linus Torvalds authored
      Pull gfs2 updates from Steven Whitehouse:
       "This time we have mostly clean ups.  There is a bug fix for a NULL
        dereference relating to ACLs, and another which improves (but does not
        fix entirely) an allocation fall-back code path.  The other three
        patches are small clean ups"
      
      * tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw:
        GFS2: Fix crash during ACL deletion in acl max entry check in gfs2_set_acl()
        GFS2: use __vmalloc GFP_NOFS for fs-related allocations.
        GFS2: Eliminate a nonsense goto
        GFS2: fix sprintf format specifier
        GFS2: Eliminate __gfs2_glock_remove_from_lru
      b2718bff
    • Linus Torvalds's avatar
      Merge tag 'xfs-for-linus-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs · ae90fb14
      Linus Torvalds authored
      Pull xfs update from Dave Chinner:
       "This update contains:
      
         - RENAME_EXCHANGE support
      
         - Rework of the superblock logging infrastructure
      
         - Rework of the XFS_IOCTL_SETXATTR implementation
             * enables use inside user namespaces
             * fixes inconsistencies setting extent size hints
      
         - fixes for missing buffer type annotations used in log recovery
      
         - more consolidation of libxfs headers
      
         - preparation patches for block based PNFS support
      
         - miscellaneous bug fixes and cleanups"
      
      * tag 'xfs-for-linus-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (37 commits)
        xfs: only trace buffer items if they exist
        xfs: report proper f_files in statfs if we overshoot imaxpct
        xfs: fix panic_mask documentation
        xfs: xfs_ioctl_setattr_check_projid can be static
        xfs: growfs should use synchronous transactions
        xfs: fix behaviour of XFS_IOC_FSSETXATTR on directories
        xfs: factor projid hint checking out of xfs_ioctl_setattr
        xfs: factor extsize hint checking out of xfs_ioctl_setattr
        xfs: XFS_IOCTL_SETXATTR can run in user namespaces
        xfs: kill xfs_ioctl_setattr behaviour mask
        xfs: disaggregate xfs_ioctl_setattr
        xfs: factor out xfs_ioctl_setattr transaciton preamble
        xfs: separate xflags from xfs_ioctl_setattr
        xfs: FSX_NONBLOCK is not used
        xfs: don't allocate an ioend for direct I/O completions
        xfs: change kmem_free to use generic kvfree()
        xfs: factor out a xfs_update_prealloc_flags() helper
        xfs: remove incorrect error negation in attr_multi ioctl
        xfs: set superblock buffer type correctly
        xfs: set buf types when converting extent formats
        ...
      ae90fb14
  8. 10 Feb, 2015 22 commits
    • Linus Torvalds's avatar
      Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs · c5452a58
      Linus Torvalds authored
      Pull quota interface unification and misc cleanups from Jan Kara:
       "The first part of the series unifying XFS and VFS quota interfaces.
      
        This part unifies turning quotas on and off so quota-tools and
        xfs_quota can be used to manage any filesystem.  This is useful so
        that userspace doesn't have to distinguish which filesystem it is
        working with.  As a result we can then easily reuse tests for project
        quotas in XFS for ext4.
      
        This also contains minor cleanups and fixes for udf, isofs, and ext3"
      
      * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (23 commits)
        udf: remove bool assignment to 0/1
        udf: use bool for done
        quota: Store maximum space limit in bytes
        quota: Remove quota_on_meta callback
        ocfs2: Use generic helpers for quotaon and quotaoff
        ext4: Use generic helpers for quotaon and quotaoff
        quota: Add ->quota_{enable,disable} callbacks for VFS quotas
        quota: Wire up ->quota_{enable,disable} callbacks into Q_QUOTA{ON,OFF}
        quota: Split ->set_xstate callback into two
        xfs: Remove some pointless quota checks
        xfs: Remove some useless flags tests
        xfs: Remove useless test
        quota: Verify flags passed to Q_SETINFO
        quota: Cleanup flags definitions
        ocfs2: Move OLQF_CLEAN flag out of generic quota flags
        quota: Don't store flags for v2 quota format
        jbd: drop jbd_ENOSYS debug
        udf: destroy sbi mutex in put_super
        udf: Check length of extended attributes and allocation descriptors
        udf: Remove repeated loads blocksize
        ...
      c5452a58
    • Linus Torvalds's avatar
      Merge tag 'locks-v3.20-1' of git://git.samba.org/jlayton/linux · 4b4f8580
      Linus Torvalds authored
      Pull file locking related changes #1 from Jeff Layton:
       "This patchset contains a fairly major overhaul of how file locks are
        tracked within the inode.  Rather than a single list, we now create a
        per-inode "lock context" that contains individual lists for the file
        locks, and a new dedicated spinlock for them.
      
        There are changes in other trees that are based on top of this set so
        it may be easiest to pull this in early"
      
      * tag 'locks-v3.20-1' of git://git.samba.org/jlayton/linux:
        locks: update comments that refer to inode->i_flock
        locks: consolidate NULL i_flctx checks in locks_remove_file
        locks: keep a count of locks on the flctx lists
        locks: clean up the lm_change prototype
        locks: add a dedicated spinlock to protect i_flctx lists
        locks: remove i_flock field from struct inode
        locks: convert lease handling to file_lock_context
        locks: convert posix locks to file_lock_context
        locks: move flock locks to file_lock_context
        ceph: move spinlocking into ceph_encode_locks_to_buffer and ceph_count_locks
        locks: add a new struct file_locking_context pointer to struct inode
        locks: have locks_release_file use flock_lock_file to release generic flock locks
        locks: add new struct list_head to struct file_lock
      4b4f8580
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 87291235
      Linus Torvalds authored
      Pull ACPI and power management updates from Rafael Wysocki:
       "We have a few new features this time, including a new SFI-based
        cpufreq driver, a new devfreq driver for Tegra Activity Monitor, a new
        devfreq class for providing its governors with raw utilization data
        and a new ACPI driver for AMD SoCs.
      
        Still, the majority of changes here are reworks of existing code to
        make it more straightforward or to prepare it for implementing new
        features on top of it.  The primary example is the rework of ACPI
        resources handling from Jiang Liu, Thomas Gleixner and Lv Zheng with
        support for IOAPIC hotplug implemented on top of it, but there is
        quite a number of changes of this kind in the cpufreq core, ACPICA,
        ACPI EC driver, ACPI processor driver and the generic power domains
        core code too.
      
        The most active developer is Viresh Kumar with his cpufreq changes.
      
        Specifics:
      
         - Rework of the core ACPI resources parsing code to fix issues in it
           and make using resource offsets more convenient and consolidation
           of some resource-handing code in a couple of places that have grown
           analagous data structures and code to cover the the same gap in the
           core (Jiang Liu, Thomas Gleixner, Lv Zheng).
      
         - ACPI-based IOAPIC hotplug support on top of the resources handling
           rework (Jiang Liu, Yinghai Lu).
      
         - ACPICA update to upstream release 20150204 including an interrupt
           handling rework that allows drivers to install raw handlers for
           ACPI GPEs which then become entirely responsible for the given GPE
           and the ACPICA core code won't touch it (Lv Zheng, David E Box,
           Octavian Purdila).
      
         - ACPI EC driver rework to fix several concurrency issues and other
           problems related to events handling on top of the ACPICA's new
           support for raw GPE handlers (Lv Zheng).
      
         - New ACPI driver for AMD SoCs analogous to the LPSS (Low-Power
           Subsystem) driver for Intel chips (Ken Xue).
      
         - Two minor fixes of the ACPI LPSS driver (Heikki Krogerus, Jarkko
           Nikula).
      
         - Two new blacklist entries for machines (Samsung 730U3E/740U3E and
           510R) where the native backlight interface doesn't work correctly
           while the ACPI one does (Hans de Goede).
      
         - Rework of the ACPI processor driver's handling of idle states to
           make the code more straightforward and less bloated overall (Rafael
           J Wysocki).
      
         - Assorted minor fixes related to ACPI and SFI (Andreas Ruprecht,
           Andy Shevchenko, Hanjun Guo, Jan Beulich, Rafael J Wysocki, Yaowei
           Bai).
      
         - PCI core power management modification to avoid resuming (some)
           runtime-suspended devices during system suspend if they are in the
           right states already (Rafael J Wysocki).
      
         - New SFI-based cpufreq driver for Intel platforms using SFI
           (Srinidhi Kasagar).
      
         - cpufreq core fixes, cleanups and simplifications (Viresh Kumar,
           Doug Anderson, Wolfram Sang).
      
         - SkyLake CPU support and other updates for the intel_pstate driver
           (Kristen Carlson Accardi, Srinivas Pandruvada).
      
         - cpufreq-dt driver cleanup (Markus Elfring).
      
         - Init fix for the ARM big.LITTLE cpuidle driver (Sudeep Holla).
      
         - Generic power domains core code fixes and cleanups (Ulf Hansson).
      
         - Operating Performance Points (OPP) core code cleanups and kernel
           documentation update (Nishanth Menon).
      
         - New dabugfs interface to make the list of PM QoS constraints
           available to user space (Nishanth Menon).
      
         - New devfreq driver for Tegra Activity Monitor (Tomeu Vizoso).
      
         - New devfreq class (devfreq_event) to provide raw utilization data
           to devfreq governors (Chanwoo Choi).
      
         - Assorted minor fixes and cleanups related to power management
           (Andreas Ruprecht, Krzysztof Kozlowski, Rickard Strandqvist, Pavel
           Machek, Todd E Brandt, Wonhong Kwon).
      
         - turbostat updates (Len Brown) and cpupower Makefile improvement
           (Sriram Raghunathan)"
      
      * tag 'pm+acpi-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (151 commits)
        tools/power turbostat: relax dependency on APERF_MSR
        tools/power turbostat: relax dependency on invariant TSC
        Merge branch 'pci/host-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci into acpi-resources
        tools/power turbostat: decode MSR_*_PERF_LIMIT_REASONS
        tools/power turbostat: relax dependency on root permission
        ACPI / video: Add disable_native_backlight quirk for Samsung 510R
        ACPI / PM: Remove unneeded nested #ifdef
        USB / PM: Remove unneeded #ifdef and associated dead code
        intel_pstate: provide option to only use intel_pstate with HWP
        ACPI / EC: Add GPE reference counting debugging messages
        ACPI / EC: Add query flushing support
        ACPI / EC: Refine command storm prevention support
        ACPI / EC: Add command flushing support.
        ACPI / EC: Introduce STARTED/STOPPED flags to replace BLOCKED flag
        ACPI: add AMD ACPI2Platform device support for x86 system
        ACPI / table: remove duplicate NULL check for the handler of acpi_table_parse()
        ACPI / EC: Update revision due to raw handler mode.
        ACPI / EC: Reduce ec_poll() by referencing the last register access timestamp.
        ACPI / EC: Fix several GPE handling issues by deploying ACPI_GPE_DISPATCH_RAW_HANDLER mode.
        ACPICA: Events: Enable APIs to allow interrupt/polling adaptive request based GPE handling model
        ...
      87291235
    • Linus Torvalds's avatar
      Merge tag 'pci-v3.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · c08f8467
      Linus Torvalds authored
      Pull PCI changes from Bjorn Helgaas:
       "Enumeration
          - Move domain assignment from arm64 to generic code (Lorenzo Pieralisi)
          - ARM: Remove artificial dependency on pci_sys_data domain (Lorenzo Pieralisi)
          - ARM: Move to generic PCI domains (Lorenzo Pieralisi)
          - Generate uppercase hex for modalias var in uevent (Ricardo Ribalda Delgado)
          - Add and use generic config accessors on ARM, PowerPC (Rob Herring)
      
        Resource management
          - Free resources on failure in of_pci_get_host_bridge_resources() (Lorenzo Pieralisi)
          - Fix infinite loop with ROM image of size 0 (Michel Dänzer)
      
        PCI device hotplug
          - Handle surprise add even if surprise removal isn't supported (Bjorn Helgaas)
      
        Virtualization
          - Mark AMD/ATI VGA devices that don't reset on D3hot->D0 transition (Alex Williamson)
          - Add DMA alias quirk for Adaptec 3405 (Alex Williamson)
          - Add Wellsburg (X99) to Intel PCH root port ACS quirk (Alex Williamson)
          - Add ACS quirk for Emulex NICs (Vasundhara Volam)
      
        MSI
          - Fail MSI-X mappings if there's no space assigned to MSI-X BAR (Yijing Wang)
      
        Freescale Layerscape host bridge driver
          - Fix platform_no_drv_owner.cocci warnings (Julia Lawall)
      
        NVIDIA Tegra host bridge driver
          - Remove unnecessary tegra_pcie_fixup_bridge() (Lucas Stach)
      
        Renesas R-Car host bridge driver
          - Fix error handling of irq_of_parse_and_map() (Dmitry Torokhov)
      
        TI Keystone host bridge driver
          - Fix error handling of irq_of_parse_and_map() (Dmitry Torokhov)
          - Fix misspelling of current function in debug output (Julia Lawall)
      
        Xilinx AXI host bridge driver
          - Fix harmless format string warning (Arnd Bergmann)
      
        Miscellaneous
          - Use standard parsing functions for ASPM sysfs setters (Chris J Arges)
          - Add pci_device_to_OF_node() stub for !CONFIG_OF (Kevin Hao)
          - Delete unnecessary NULL pointer checks (Markus Elfring)
          - Add and use defines for PCIe Max_Read_Request_Size (Rafał Miłecki)
          - Include clk.h instead of clk-private.h (Stephen Boyd)"
      
      * tag 'pci-v3.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits)
        PCI: Add pci_device_to_OF_node() stub for !CONFIG_OF
        PCI: xilinx: Convert to use generic config accessors
        PCI: xgene: Convert to use generic config accessors
        PCI: tegra: Convert to use generic config accessors
        PCI: rcar: Convert to use generic config accessors
        PCI: generic: Convert to use generic config accessors
        powerpc/powermac: Convert PCI to use generic config accessors
        powerpc/fsl_pci: Convert PCI to use generic config accessors
        ARM: ks8695: Convert PCI to use generic config accessors
        ARM: sa1100: Convert PCI to use generic config accessors
        ARM: integrator: Convert PCI to use generic config accessors
        PCI: versatile: Add DT-based ARM Versatile PB PCIe host driver
        ARM: dts: versatile: add PCI controller binding
        of/pci: Free resources on failure in of_pci_get_host_bridge_resources()
        PCI: versatile: Add DT docs for ARM Versatile PB PCIe driver
        PCI: Fail MSI-X mappings if there's no space assigned to MSI-X BAR
        r8169: use PCI define for Max_Read_Request_Size
        [SCSI] esas2r: use PCI define for Max_Read_Request_Size
        tile: use PCI define for Max_Read_Request_Size
        rapidio/tsi721: use PCI define for Max_Read_Request_Size
        ...
      c08f8467
    • Vladimir Davydov's avatar
      memcg: zap memcg_slab_caches and memcg_slab_mutex · d5b3cf71
      Vladimir Davydov authored
      mem_cgroup->memcg_slab_caches is a list of kmem caches corresponding to
      the given cgroup.  Currently, it is only used on css free in order to
      destroy all caches corresponding to the memory cgroup being freed.  The
      list is protected by memcg_slab_mutex.  The mutex is also used to protect
      kmem_cache->memcg_params->memcg_caches arrays and synchronizes
      kmem_cache_destroy vs memcg_unregister_all_caches.
      
      However, we can perfectly get on without these two.  To destroy all caches
      corresponding to a memory cgroup, we can walk over the global list of kmem
      caches, slab_caches, and we can do all the synchronization stuff using the
      slab_mutex instead of the memcg_slab_mutex.  This patch therefore gets rid
      of the memcg_slab_caches and memcg_slab_mutex.
      
      Apart from this nice cleanup, it also:
      
       - assures that rcu_barrier() is called once at max when a root cache is
         destroyed or a memory cgroup is freed, no matter how many caches have
         SLAB_DESTROY_BY_RCU flag set;
      
       - fixes the race between kmem_cache_destroy and kmem_cache_create that
         exists, because memcg_cleanup_cache_params, which is called from
         kmem_cache_destroy after checking that kmem_cache->refcount=0,
         releases the slab_mutex, which gives kmem_cache_create a chance to
         make an alias to a cache doomed to be destroyed.
      Signed-off-by: default avatarVladimir Davydov <vdavydov@parallels.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Michal Hocko <mhocko@suse.cz>
      Acked-by: default avatarChristoph Lameter <cl@linux.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d5b3cf71
    • Vladimir Davydov's avatar
      memcg: zap memcg_name argument of memcg_create_kmem_cache · 3e0350a3
      Vladimir Davydov authored
      Instead of passing the name of the memory cgroup which the cache is
      created for in the memcg_name_argument, let's obtain it immediately in
      memcg_create_kmem_cache.
      Signed-off-by: default avatarVladimir Davydov <vdavydov@parallels.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Michal Hocko <mhocko@suse.cz>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3e0350a3
    • Vladimir Davydov's avatar
      memcg: zap __memcg_{charge,uncharge}_slab · dbf22eb6
      Vladimir Davydov authored
      They are simple wrappers around memcg_{charge,uncharge}_kmem, so let's
      zap them and call these functions directly.
      Signed-off-by: default avatarVladimir Davydov <vdavydov@parallels.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Michal Hocko <mhocko@suse.cz>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      dbf22eb6
    • Weijie Yang's avatar
      mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check · 4c5018ce
      Weijie Yang authored
      If the freeing page and its buddy page are not at the same zone, the
      current holding zone->lock for the freeing page cann't prevent buddy page
      getting allocated, this could trigger VM_BUG_ON_PAGE in page_is_buddy() at
      a very tiny chance, such as:
      
      cpu 0:						cpu 1:
      hold zone_1 lock
      check page and it buddy
      PageBuddy(buddy) is true			hold zone_2 lock
      page_order(buddy) == order is true		alloc buddy
      trigger VM_BUG_ON_PAGE(page_count(buddy) != 0)
      
      zone_1->lock prevents the freeing page getting allocated
      zone_2->lock prevents the buddy page getting allocated
      they are not the same zone->lock.
      
      If we can't remove the zone_id check statement, it's better handle this
      rare race.  This patch fixes this by placing the zone_id check before the
      VM_BUG_ON_PAGE check.
      Signed-off-by: default avatarWeijie Yang <weijie.yang@samsung.com>
      Acked-by: default avatarMel Gorman <mgorman@suse.de>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Rik van Riel <riel@redhat.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4c5018ce
    • Andrey Ryabinin's avatar
      mm: hugetlb: fix type of hugetlb_treat_as_movable variable · 753162cd
      Andrey Ryabinin authored
      hugetlb_treat_as_movable declared as unsigned long, but
      proc_dointvec() used for parsing it:
      
      static struct ctl_table vm_table[] = {
      ...
              {
                      .procname	= "hugepages_treat_as_movable",
                      .data		= &hugepages_treat_as_movable,
                      .maxlen		= sizeof(int),
                      .mode		= 0644,
                      .proc_handler	= proc_dointvec,
              },
      
      This seems harmless, but it's better to use int type here.
      Signed-off-by: default avatarAndrey Ryabinin <a.ryabinin@samsung.com>
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Manfred Spraul <manfred@colorfullife.com>
      Acked-by: default avatarDavid Rientjes <rientjes@google.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      753162cd
    • Andrey Ryabinin's avatar
      mm, hugetlb: remove unnecessary lower bound on sysctl handlers"? · 3cd7645d
      Andrey Ryabinin authored
      Commit ed4d4902 ("mm, hugetlb: remove hugetlb_zero and
      hugetlb_infinity") replaced 'unsigned long hugetlb_zero' with 'int zero'
      leading to out-of-bounds access in proc_doulongvec_minmax().  Use
      '.extra1 = NULL' instead of '.extra1 = &zero'.  Passing NULL is
      equivalent to passing minimal value, which is 0 for unsigned types.
      
      Fixes: ed4d4902 ("mm, hugetlb: remove hugetlb_zero and hugetlb_infinity")
      Signed-off-by: default avatarAndrey Ryabinin <a.ryabinin@samsung.com>
      Reported-by: default avatarDmitry Vyukov <dvyukov@google.com>
      Suggested-by: default avatarManfred Spraul <manfred@colorfullife.com>
      Acked-by: default avatarDavid Rientjes <rientjes@google.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3cd7645d
    • Johannes Weiner's avatar
      mm: memory: merge shared-writable dirtying branches in do_wp_page() · f38b4b31
      Johannes Weiner authored
      Whether there is a vm_ops->page_mkwrite or not, the page dirtying is
      pretty much the same.  Make sure the page references are the same in both
      cases, then merge the two branches.
      
      It's tempting to go even further and page-lock the !page_mkwrite case, to
      get it in line with everybody else setting the page table and thus further
      simplify the model.  But that's not quite compelling enough to justify
      dropping the pte lock, then relocking and verifying the entry for
      filesystems without ->page_mkwrite, which notably includes tmpfs.  Leave
      it for now and lock the page late in the !page_mkwrite case.
      Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
      Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Reviewed-by: default avatarJan Kara <jack@suse.cz>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      f38b4b31
    • Johannes Weiner's avatar
      mm: memory: remove ->vm_file check on shared writable vmas · 74ec6751
      Johannes Weiner authored
      Shared anonymous mmaps are implemented with shmem files, so all VMAs with
      shared writable semantics also have an underlying backing file.
      Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
      Reviewed-by: default avatarJan Kara <jack@suse.cz>
      Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      74ec6751
    • Kirill A. Shutemov's avatar
      xtensa: drop _PAGE_FILE and pte_file()-related helpers · d9ecee28
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Acked-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d9ecee28
    • Kirill A. Shutemov's avatar
      x86: drop _PAGE_FILE and pte_file()-related helpers · 0a191362
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0a191362
    • Kirill A. Shutemov's avatar
      unicore32: drop pte_file()-related helpers · 40171798
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      40171798
    • Kirill A. Shutemov's avatar
      um: drop _PAGE_FILE and pte_file()-related helpers · 3513006a
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Richard Weinberger <richard@nod.at>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3513006a
    • Kirill A. Shutemov's avatar
      tile: drop pte_file()-related helpers · eb12f487
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Acked-by: default avatarChris Metcalf <cmetcalf@ezchip.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      eb12f487
    • Kirill A. Shutemov's avatar
      sparc: drop pte_file()-related helpers · 6a8c4820
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      
      This patch also increase number of bits availble for swap offset.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6a8c4820
    • Kirill A. Shutemov's avatar
      sh: drop _PAGE_FILE and pte_file()-related helpers · 8b70beac
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8b70beac
    • Kirill A. Shutemov's avatar
      score: drop _PAGE_FILE and pte_file()-related helpers · 917e401e
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.
      Nobody creates non-linear mapping anymore.
      
      This patch also increase number of bits availble for swap offset.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Chen Liqin <liqin.linux@gmail.com>
      Cc: Lennox Wu <lennox.wu@gmail.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      917e401e
    • Kirill A. Shutemov's avatar
      s390: drop pte_file()-related helpers · 6e76d4b2
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Acked-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6e76d4b2
    • Kirill A. Shutemov's avatar
      parisc: drop _PAGE_FILE and pte_file()-related helpers · 8d55da81
      Kirill A. Shutemov authored
      We've replaced remap_file_pages(2) implementation with emulation.  Nobody
      creates non-linear mapping anymore.
      Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
      Cc: Helge Deller <deller@gmx.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      8d55da81