Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Commits on Jul 5, 2015
  1. Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/lin…

    authored
    …ux/kernel/git/tytso/ext4
    
    Pull ext4 bugfixes from Ted Ts'o:
     "Bug fixes (all for stable kernels) for ext4:
    
       - address corner cases for indirect blocks->extent migration
    
       - fix reserved block accounting invalidate_page when
         page_size != block_size (i.e., ppc or 1k block size file systems)
    
       - fix deadlocks when a memcg is under heavy memory pressure
    
       - fix fencepost error in lazytime optimization"
    
    * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
      ext4: replace open coded nofail allocation in ext4_free_blocks()
      ext4: correctly migrate a file with a hole at the beginning
      ext4: be more strict when migrating to non-extent based file
      ext4: fix reservation release on invalidatepage for delalloc fs
      ext4: avoid deadlocks in the writeback path by using sb_getblk_gfp
      bufferhead: Add _gfp version for sb_getblk()
      ext4: fix fencepost error in lazytime optimization
  2. Linux 4.2-rc1

    authored
  3. Merge tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/us…

    authored
    …ers/dvhart/linux-platform-drivers-x86
    
    Pull late x86 platform driver updates from Darren Hart:
     "The following came in a bit later and I wanted them to bake in next a
      few more days before submitting, thus the second pull.
    
      A new intel_pmc_ipc driver, a symmetrical allocation and free fix in
      dell-laptop, a couple minor fixes, and some updated documentation in
      the dell-laptop comments.
    
      intel_pmc_ipc:
       - Add Intel Apollo Lake PMC IPC driver
    
      tc1100-wmi:
       - Delete an unnecessary check before the function call "kfree"
    
      dell-laptop:
       - Fix allocating & freeing SMI buffer page
       - Show info about WiGig and UWB in debugfs
       - Update information about wireless control"
    
    * tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
      intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver
      tc1100-wmi: Delete an unnecessary check before the function call "kfree"
      dell-laptop: Fix allocating & freeing SMI buffer page
      dell-laptop: Show info about WiGig and UWB in debugfs
      dell-laptop: Update information about wireless control
  4. @tytso

    ext4: replace open coded nofail allocation in ext4_free_blocks()

    Michal Hocko authored tytso committed
    ext4_free_blocks is looping around the allocation request and mimics
    __GFP_NOFAIL behavior without any allocation fallback strategy. Let's
    remove the open coded loop and replace it with __GFP_NOFAIL. Without the
    flag the allocator has no way to find out never-fail requirement and
    cannot help in any way.
    
    Signed-off-by: Michal Hocko <mhocko@suse.cz>
    Signed-off-by: Theodore Ts'o <tytso@mit.edu>
    Cc: stable@vger.kernel.org
  5. Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel…

    authored
    …/git/viro/vfs
    
    Pull more vfs updates from Al Viro:
     "Assorted VFS fixes and related cleanups (IMO the most interesting in
      that part are f_path-related things and Eric's descriptor-related
      stuff).  UFS regression fixes (it got broken last cycle).  9P fixes.
      fs-cache series, DAX patches, Jan's file_remove_suid() work"
    
    [ I'd say this is much more than "fixes and related cleanups".  The
      file_table locking rule change by Eric Dumazet is a rather big and
      fundamental update even if the patch isn't huge.   - Linus ]
    
    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits)
      9p: cope with bogus responses from server in p9_client_{read,write}
      p9_client_write(): avoid double p9_free_req()
      9p: forgetting to cancel request on interrupted zero-copy RPC
      dax: bdev_direct_access() may sleep
      block: Add support for DAX reads/writes to block devices
      dax: Use copy_from_iter_nocache
      dax: Add block size note to documentation
      fs/file.c: __fget() and dup2() atomicity rules
      fs/file.c: don't acquire files->file_lock in fd_install()
      fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
      vfs: avoid creation of inode number 0 in get_next_ino
      namei: make set_root_rcu() return void
      make simple_positive() public
      ufs: use dir_pages instead of ufs_dir_pages()
      pagemap.h: move dir_pages() over there
      remove the pointless include of lglock.h
      fs: cleanup slight list_entry abuse
      xfs: Correctly lock inode when removing suid and file capabilities
      fs: Call security_ops->inode_killpriv on truncate
      fs: Provide function telling whether file_remove_privs() will do anything
      ...
  6. bluetooth: fix list handling

    authored
    Commit 835a6a2 ("Bluetooth: Stop sabotaging list poisoning")
    thought that the code was sabotaging the list poisoning when NULL'ing
    out the list pointers and removed it.
    
    But what was going on was that the bluetooth code was using NULL
    pointers for the list as a way to mark it empty, and that commit just
    broke it (and replaced the test with NULL with a "list_empty()" test on
    a uninitialized list instead, breaking things even further).
    
    So fix it all up to use the regular and real list_empty() handling
    (which does not use NULL, but a pointer to itself), also making sure to
    initialize the list properly (the previous NULL case was initialized
    implicitly by the session being allocated with kzalloc())
    
    This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong
    An.
    
    [ I would normally expect to get this through the bt tree, but I'm going
      to release -rc1, so I'm just committing this directly   - Linus ]
    
    Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com>
    Cc: Alexey Dobriyan <adobriyan@gmail.com>
    Original-by: Tedd Ho-Jeong An <tedd.an@intel.com>
    Original-by: Marcel Holtmann <marcel@holtmann.org>:
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commits on Jul 4, 2015
  1. Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/…

    authored
    …git/nab/target-pending
    
    Pull SCSI target updates from Nicholas Bellinger:
     "It's been a busy development cycle for target-core in a number of
      different areas.
    
      The fabric API usage for se_node_acl allocation is now within
      target-core code, dropping the external API callers for all fabric
      drivers tree-wide.
    
      There is a new conversion to RCU hlists for se_node_acl and
      se_portal_group LUN mappings, that turns fast-past LUN lookup into a
      completely lockless code-path.  It also removes the original
      hard-coded limitation of 256 LUNs per fabric endpoint.
    
      The configfs attributes for backends can now be shared between core
      and driver code, allowing existing drivers to use common code while
      still allowing flexibility for new backend provided attributes.
    
      The highlights include:
    
       - Merge sbc_verify_dif_* into common code (sagi)
       - Remove iscsi-target support for obsolete IFMarker/OFMarker
         (Christophe Vu-Brugier)
       - Add bidi support in target/user backend (ilias + vangelis + agover)
       - Move se_node_acl allocation into target-core code (hch)
       - Add crc_t10dif_update common helper (akinobu + mkp)
       - Handle target-core odd SGL mapping for data transfer memory
         (akinobu)
       - Move transport ID handling into target-core (hch)
       - Move task tag into struct se_cmd + support 64-bit tags (bart)
       - Convert se_node_acl->device_list[] to RCU hlist (nab + hch +
         paulmck)
       - Convert se_portal_group->tpg_lun_list[] to RCU hlist (nab + hch +
         paulmck)
       - Simplify target backend driver registration (hch)
       - Consolidate + simplify target backend attribute implementations
         (hch + nab)
       - Subsume se_port + t10_alua_tg_pt_gp_member into se_lun (hch)
       - Drop lun_sep_lock for se_lun->lun_se_dev RCU usage (hch + nab)
       - Drop unnecessary core_tpg_register TFO parameter (nab)
       - Use 64-bit LUNs tree-wide (hannes)
       - Drop left-over TARGET_MAX_LUNS_PER_TRANSPORT limit (hannes)"
    
    * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (76 commits)
      target: Bump core version to v5.0
      target: remove target_core_configfs.h
      target: remove unused TARGET_CORE_CONFIG_ROOT define
      target: consolidate version defines
      target: implement WRITE_SAME with UNMAP bit using ->execute_unmap
      target: simplify UNMAP handling
      target: replace se_cmd->execute_rw with a protocol_data field
      target/user: Fix inconsistent kmap_atomic/kunmap_atomic
      target: Send UA when changing LUN inventory
      target: Send UA upon LUN RESET tmr completion
      target: Send UA on ALUA target port group change
      target: Convert se_lun->lun_deve_lock to normal spinlock
      target: use 'se_dev_entry' when allocating UAs
      target: Remove 'ua_nacl' pointer from se_ua structure
      target_core_alua: Correct UA handling when switching states
      xen-scsiback: Fix compile warning for 64-bit LUN
      target: Remove TARGET_MAX_LUNS_PER_TRANSPORT
      target: use 64-bit LUNs
      target: Drop duplicate + unused se_dev_check_wce
      target: Drop unnecessary core_tpg_register TFO parameter
      ...
  2. Merge tag 'ntb-4.2' of git://github.com/jonmason/ntb

    authored
    Pull NTB updates from Jon Mason:
     "This includes a pretty significant reworking of the NTB core code, but
      has already produced some significant performance improvements.
    
      An abstraction layer was added to allow the hardware and clients to be
      easily added.  This required rewriting the NTB transport layer for
      this abstraction layer.  This modification will allow future "high
      performance" NTB clients.
    
      In addition to this change, a number of performance modifications were
      added.  These changes include NUMA enablement, using CPU memcpy
      instead of asyncdma, and modification of NTB layer MTU size"
    
    * tag 'ntb-4.2' of git://github.com/jonmason/ntb: (22 commits)
      NTB: Add split BAR output for debugfs stats
      NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
      NTB: Print driver name and version in module init
      NTB: Increase transport MTU to 64k from 16k
      NTB: Rename Intel code names to platform names
      NTB: Default to CPU memcpy for performance
      NTB: Improve performance with write combining
      NTB: Use NUMA memory in Intel driver
      NTB: Use NUMA memory and DMA chan in transport
      NTB: Rate limit ntb_qp_link_work
      NTB: Add tool test client
      NTB: Add ping pong test client
      NTB: Add parameters for Intel SNB B2B addresses
      NTB: Reset transport QP link stats on down
      NTB: Do not advance transport RX on link down
      NTB: Differentiate transport link down messages
      NTB: Check the device ID to set errata flags
      NTB: Enable link for Intel root port mode in probe
      NTB: Read peer info from local SPAD in transport
      NTB: Split ntb_hw_intel and ntb_transport drivers
      ...
  3. 9p: cope with bogus responses from server in p9_client_{read,write}

    Al Viro authored
    if server claims to have written/read more than we'd told it to,
    warn and cap the claimed byte count to avoid advancing more than
    we are ready to.
  4. p9_client_write(): avoid double p9_free_req()

    Al Viro authored
    Braino in "9p: switch p9_client_write() to passing it struct iov_iter *";
    if response is impossible to parse and we discard the request, get the
    out of the loop right there.
    
    Cc: stable@vger.kernel.org
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
  5. 9p: forgetting to cancel request on interrupted zero-copy RPC

    Al Viro authored
    If we'd already sent a request and decide to abort it, we *must*
    issue TFLUSH properly and not just blindly reuse the tag, or
    we'll get seriously screwed when response eventually arrives
    and we confuse it for response to later request that had reused
    the same tag.
    
    Cc: stable@vger.kernel.org # v3.2 and later
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
  6. dax: bdev_direct_access() may sleep

    Matthew Wilcox authored Al Viro committed
    The brd driver is the only in-tree driver that may sleep currently.
    After some discussion on linux-fsdevel, we decided that any driver
    may choose to sleep in its ->direct_access method.  To ensure that all
    callers of bdev_direct_access() are prepared for this, add a call
    to might_sleep().
    
    Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
  7. block: Add support for DAX reads/writes to block devices

    Matthew Wilcox authored Al Viro committed
    If a block device supports the ->direct_access methods, bypass the normal
    DIO path and use DAX to go straight to memcpy() instead of allocating
    a DIO and a BIO.
    
    Includes support for the DIO_SKIP_DIO_COUNT flag in DAX, as is done in
    do_blockdev_direct_IO().
    
    Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
  8. dax: Use copy_from_iter_nocache

    Matthew Wilcox authored Al Viro committed
    When userspace does a write, there's no need for the written data to
    pollute the CPU cache.  This matches the original XIP code.
    
    Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
  9. dax: Add block size note to documentation

    Matthew Wilcox authored Al Viro committed
    For block devices which are small enough, mkfs will default to creating
    a filesystem with block sizes smaller than page size.
    
    Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
  10. Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

    authored
    Pull kvm fixes from Paolo Bonzini:
     "Except for the preempt notifiers fix, these are all small bugfixes
      that could have been waited for -rc2.  Sending them now since I was
      taking care of Peter's patch anyway"
    
    * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
      kvm: add hyper-v crash msrs values
      KVM: x86: remove data variable from kvm_get_msr_common
      KVM: s390: virtio-ccw: don't overwrite config space values
      KVM: x86: keep track of LVT0 changes under APICv
      KVM: x86: properly restore LVT0
      KVM: x86: make vapics_in_nmi_mode atomic
      sched, preempt_notifier: separate notifier registration from static_key inc/dec
  11. @jonmason

    NTB: Add split BAR output for debugfs stats

    Dave Jiang authored jonmason committed
    When split BAR is enabled, the driver needs to dump out the split BAR
    registers rather than the original 64bit BAR registers.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  12. @jonmason

    NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe

    Dave Jiang authored jonmason committed
    The unsafe doorbell and scratchpad access should display reason when
    WARN is called.  Otherwise we get a stack dump without any explanation.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  13. @jonmason

    NTB: Print driver name and version in module init

    Dave Jiang authored jonmason committed
    Printouts driver name and version to indicate what is being loaded.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  14. @jonmason

    NTB: Increase transport MTU to 64k from 16k

    Dave Jiang authored jonmason committed
    Benchmarking showed a significant performance increase with the MTU size
    to 64k instead of 16k.  Change the driver default to 64k.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  15. @jonmason

    NTB: Rename Intel code names to platform names

    Dave Jiang authored jonmason committed
    Instead of using the platform code names, use the correct platform names
    to identify the respective Intel NTB hardware.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  16. @jonmason

    NTB: Default to CPU memcpy for performance

    Dave Jiang authored jonmason committed
    Disable DMA usage by default, since the CPU provides much better
    performance with write combining.  Provide a module parameter to enable
    DMA usage when offloading the memcpy is preferred.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  17. @jonmason

    NTB: Improve performance with write combining

    Dave Jiang authored jonmason committed
    Changing the memory window BAR mappings to write combining significantly
    boosts the performance.  We will also use memcpy that uses non-temporal
    store, which showed performance improvement when doing non-cached
    memcpys.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  18. @allenbh @jonmason

    NTB: Use NUMA memory in Intel driver

    allenbh authored jonmason committed
    Allocate memory for the NUMA node of the NTB device.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  19. @allenbh @jonmason

    NTB: Use NUMA memory and DMA chan in transport

    allenbh authored jonmason committed
    Allocate memory and request the DMA channel for the same NUMA node as
    the NTB device.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  20. @allenbh @jonmason

    NTB: Rate limit ntb_qp_link_work

    allenbh authored jonmason committed
    When the ntb transport is connecting and waiting for the peer, the debug
    console receives lots of debug level messages about the remote qp link
    status being down.  Rate limit those messages.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  21. @allenbh @jonmason

    NTB: Add tool test client

    allenbh authored jonmason committed
    This is a simple debugging driver that enables the doorbell and
    scratch pad registers to be read and written from the debugfs.  This
    tool enables more complicated debugging to be scripted from user space.
    This driver may be used to test that your ntb hardware and drivers are
    functioning at a basic level.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  22. @allenbh @jonmason

    NTB: Add ping pong test client

    allenbh authored jonmason committed
    This is a simple ping pong driver that exercises the scratch pads and
    doorbells of the ntb hardware.  This driver may be used to test that
    your ntb hardware and drivers are functioning at a basic level.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  23. @allenbh @jonmason

    NTB: Add parameters for Intel SNB B2B addresses

    allenbh authored jonmason committed
    Add module parameters for the addresses to be used in B2B topology.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  24. @allenbh @jonmason

    NTB: Reset transport QP link stats on down

    allenbh authored jonmason committed
    Reset the link stats when the link goes down.  In particular, the TX and
    RX index and count must be reset, or else the TX side will be sending
    packets to the RX side where the RX side is not expecting them.  Reset
    all the stats, to be consistent.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  25. @allenbh @jonmason

    NTB: Do not advance transport RX on link down

    allenbh authored jonmason committed
    On link down, don't advance RX index to the next entry.  The next entry
    should never be valid after receiving the link down flag.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  26. @allenbh @jonmason

    NTB: Differentiate transport link down messages

    allenbh authored jonmason committed
    The same message "qp %d: Link Down\n" was printed at two locations in
    ntb_transport.  Change the messages so they are distinct.
    
    Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  27. @jonmason

    NTB: Check the device ID to set errata flags

    Dave Jiang authored jonmason committed
    Set errata flags for the specific device IDs to which they apply,
    instead of the whole Xeon hardware class.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  28. @jonmason

    NTB: Enable link for Intel root port mode in probe

    Dave Jiang authored jonmason committed
    Link training should be enabled in the driver probe for root port mode.
    We should not have to wait for transport to be loaded for this to
    happen.  Otherwise the ntb device will not show up on the transparent
    bridge side of the link.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
  29. @jonmason

    NTB: Read peer info from local SPAD in transport

    Dave Jiang authored jonmason committed
    The transport was writing and then reading the peer scratch pad,
    essentially reading what it just wrote instead of exchanging any
    information with the peer.  The transport expects the peer values to be
    the same as the local values, so this issue was not obvious.
    
    Signed-off-by: Dave Jiang <dave.jiang@intel.com>
    Signed-off-by: Jon Mason <jdmason@kudzu.us>
Something went wrong with that request. Please try again.