1. 29 Oct, 2011 2 commits
    • Grant Likely's avatar
      gpio: Fix ARM versatile-express build failure · 041af835
      Grant Likely authored
      A missing mach/gpio.h prevents building gpiolib on versatile express.
      
        CC      drivers/gpio/gpiolib.o
      In file included from /.../linux/include/linux/gpio.h:18:0,
                       from /.../linux/drivers/gpio/gpiolib.c:10:
      /.../linux/arch/arm/include/asm/gpio.h:5:23: fatal error: mach/gpio.h: No such file or directory
      compilation terminated.
      make[3]: *** [drivers/gpio/gpiolib.o] Error 1
      make[2]: *** [drivers/gpio] Error 2
      make[1]: *** [drivers] Error 2
      make: *** [sub-make] Error 2
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      041af835
    • Kalle Valo's avatar
      of: include errno.h · e51130c0
      Kalle Valo authored
      When compiling ath6kl for beagleboard (omap2plus_defconfig plus
      CONFIG_ATH6KL, CONFIG_OF disable) with current linux-next compilation
      fails:
      
      include/linux/of.h:269: error: 'ENOSYS' undeclared (first use in this function)
      include/linux/of.h:276: error: 'ENOSYS' undeclared (first use in this function)
      include/linux/of.h:289: error: 'ENOSYS' undeclared (first use in this function)
      
      Fix this by including errno.h from of.h.
      Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
      Acked-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      e51130c0
  2. 28 Oct, 2011 38 commits
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 · ec7ae517
      Linus Torvalds authored
      * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (204 commits)
        [SCSI] qla4xxx: export address/port of connection (fix udev disk names)
        [SCSI] ipr: Fix BUG on adapter dump timeout
        [SCSI] megaraid_sas: Fix instance access in megasas_reset_timer
        [SCSI] hpsa: change confusing message to be more clear
        [SCSI] iscsi class: fix vlan configuration
        [SCSI] qla4xxx: fix data alignment and use nl helpers
        [SCSI] iscsi class: fix link local mispelling
        [SCSI] iscsi class: Replace iscsi_get_next_target_id with IDA
        [SCSI] aacraid: use lower snprintf() limit
        [SCSI] lpfc 8.3.27: Change driver version to 8.3.27
        [SCSI] lpfc 8.3.27: T10 additions for SLI4
        [SCSI] lpfc 8.3.27: Fix queue allocation failure recovery
        [SCSI] lpfc 8.3.27: Change algorithm for getting physical port name
        [SCSI] lpfc 8.3.27: Changed worst case mailbox timeout
        [SCSI] lpfc 8.3.27: Miscellanous logic and interface fixes
        [SCSI] megaraid_sas: Changelog and version update
        [SCSI] megaraid_sas: Add driver workaround for PERC5/1068 kdump kernel panic
        [SCSI] megaraid_sas: Add multiple MSI-X vector/multiple reply queue support
        [SCSI] megaraid_sas: Add support for MegaRAID 9360/9380 12GB/s controllers
        [SCSI] megaraid_sas: Clear FUSION_IN_RESET before enabling interrupts
        ...
      ec7ae517
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://ceph.newdream.net/git/ceph-client · 97d2eb13
      Linus Torvalds authored
      * 'for-linus' of git://ceph.newdream.net/git/ceph-client:
        libceph: fix double-free of page vector
        ceph: fix 32-bit ino numbers
        libceph: force resend of osd requests if we skip an osdmap
        ceph: use kernel DNS resolver
        ceph: fix ceph_monc_init memory leak
        ceph: let the set_layout ioctl set single traits
        Revert "ceph: don't truncate dirty pages in invalidate work thread"
        ceph: replace leading spaces with tabs
        libceph: warn on msg allocation failures
        libceph: don't complain on msgpool alloc failures
        libceph: always preallocate mon connection
        libceph: create messenger with client
        ceph: document ioctls
        ceph: implement (optional) max read size
        ceph: rename rsize -> rasize
        ceph: make readpages fully async
      97d2eb13
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 68d99b2c
      Linus Torvalds authored
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (549 commits)
        ALSA: hda - Fix ADC input-amp handling for Cx20549 codec
        ALSA: hda - Keep EAPD turned on for old Conexant chips
        ALSA: hda/realtek - Fix missing volume controls with ALC260
        ASoC: wm8940: Properly set codec->dapm.bias_level
        ALSA: hda - Fix pin-config for ASUS W90V
        ALSA: hda - Fix surround/CLFE headphone and speaker pins order
        ALSA: hda - Fix typo
        ALSA: Update the sound git tree URL
        ALSA: HDA: Add new revision for ALC662
        ASoC: max98095: Convert codec->hw_write to snd_soc_write
        ASoC: keep pointer to resource so it can be freed
        ASoC: sgtl5000: Fix wrong mask in some snd_soc_update_bits calls
        ASoC: wm8996: Fix wrong mask for setting WM8996_AIF_CLOCKING_2
        ASoC: da7210: Add support for line out and DAC
        ASoC: da7210: Add support for DAPM
        ALSA: hda/realtek - Fix DAC assignments of multiple speakers
        ASoC: Use SGTL5000_LINREG_VDDD_MASK instead of hardcoded mask value
        ASoC: Set sgtl5000->ldo in ldo_regulator_register
        ASoC: wm8996: Use SND_SOC_DAPM_AIF_OUT for AIF2 Capture
        ASoC: wm8994: Use SND_SOC_DAPM_AIF_OUT for AIF3 Capture
        ...
      68d99b2c
    • Linus Torvalds's avatar
      Merge branch 'next-rebase' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci · 0e59e7e7
      Linus Torvalds authored
      * 'next-rebase' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci:
        PCI: Clean-up MPS debug output
        pci: Clamp pcie_set_readrq() when using "performance" settings
        PCI: enable MPS "performance" setting to properly handle bridge MPS
        PCI: Workaround for Intel MPS errata
        PCI: Add support for PASID capability
        PCI: Add implementation for PRI capability
        PCI: Export ATS functions to modules
        PCI: Move ATS implementation into own file
        PCI / PM: Remove unnecessary error variable from acpi_dev_run_wake()
        PCI hotplug: acpiphp: Prevent deadlock on PCI-to-PCI bridge remove
        PCI / PM: Extend PME polling to all PCI devices
        PCI quirk: mmc: Always check for lower base frequency quirk for Ricoh 1180:e823
        PCI: Make pci_setup_bridge() non-static for use by arch code
        x86: constify PCI raw ops structures
        PCI: Add quirk for known incorrect MPSS
        PCI: Add Solarflare vendor ID and SFC4000 device IDs
      0e59e7e7
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc · 46b51ea2
      Linus Torvalds authored
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (83 commits)
        mmc: fix compile error when CONFIG_BLOCK is not enabled
        mmc: core: Cleanup eMMC4.5 conditionals
        mmc: omap_hsmmc: if multiblock reads are broken, disable them
        mmc: core: add workaround for controllers with broken multiblock reads
        mmc: core: Prevent too long response times for suspend
        mmc: recognise SDIO cards with SDIO_CCCR_REV 3.00
        mmc: sd: Handle SD3.0 cards not supporting UHS-I bus speed mode
        mmc: core: support HPI send command
        mmc: core: Add cache control for eMMC4.5 device
        mmc: core: Modify the timeout value for writing power class
        mmc: core: new discard feature support at eMMC v4.5
        mmc: core: mmc sanitize feature support for v4.5
        mmc: dw_mmc: modify DATA register offset
        mmc: sdhci-pci: add flag for devices that can support runtime PM
        mmc: omap_hsmmc: ensure pbias configuration is always done
        mmc: core: Add Power Off Notify Feature eMMC 4.5
        mmc: sdhci-s3c: fix potential NULL dereference
        mmc: replace printk with appropriate display macro
        mmc: core: Add default timeout value for CMD6
        mmc: sdhci-pci: add runtime pm support
        ...
      46b51ea2
    • Linus Torvalds's avatar
      Merge branch 'devel-stable' of... · 1fdb24e9
      Linus Torvalds authored
      Merge branch 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
      
      * 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (178 commits)
        ARM: 7139/1: fix compilation with CONFIG_ARM_ATAG_DTB_COMPAT and large TEXT_OFFSET
        ARM: gic, local timers: use the request_percpu_irq() interface
        ARM: gic: consolidate PPI handling
        ARM: switch from NO_MACH_MEMORY_H to NEED_MACH_MEMORY_H
        ARM: mach-s5p64x0: remove mach/memory.h
        ARM: mach-s3c64xx: remove mach/memory.h
        ARM: plat-mxc: remove mach/memory.h
        ARM: mach-prima2: remove mach/memory.h
        ARM: mach-zynq: remove mach/memory.h
        ARM: mach-bcmring: remove mach/memory.h
        ARM: mach-davinci: remove mach/memory.h
        ARM: mach-pxa: remove mach/memory.h
        ARM: mach-ixp4xx: remove mach/memory.h
        ARM: mach-h720x: remove mach/memory.h
        ARM: mach-vt8500: remove mach/memory.h
        ARM: mach-s5pc100: remove mach/memory.h
        ARM: mach-tegra: remove mach/memory.h
        ARM: plat-tcc: remove mach/memory.h
        ARM: mach-mmp: remove mach/memory.h
        ARM: mach-cns3xxx: remove mach/memory.h
        ...
      
      Fix up mostly pretty trivial conflicts in:
       - arch/arm/Kconfig
       - arch/arm/include/asm/localtimer.h
       - arch/arm/kernel/Makefile
       - arch/arm/mach-shmobile/board-ap4evb.c
       - arch/arm/mach-u300/core.c
       - arch/arm/mm/dma-mapping.c
       - arch/arm/mm/proc-v7.S
       - arch/arm/plat-omap/Kconfig
      largely due to some CONFIG option renaming (ie CONFIG_PM_SLEEP ->
      CONFIG_ARM_CPU_SUSPEND for the arm-specific suspend code etc) and
      addition of NEED_MACH_MEMORY_H next to HAVE_IDE.
      1fdb24e9
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue · f362f98e
      Linus Torvalds authored
      * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/vfs-queue: (21 commits)
        leases: fix write-open/read-lease race
        nfs: drop unnecessary locking in llseek
        ext4: replace cut'n'pasted llseek code with generic_file_llseek_size
        vfs: add generic_file_llseek_size
        vfs: do (nearly) lockless generic_file_llseek
        direct-io: merge direct_io_walker into __blockdev_direct_IO
        direct-io: inline the complete submission path
        direct-io: separate map_bh from dio
        direct-io: use a slab cache for struct dio
        direct-io: rearrange fields in dio/dio_submit to avoid holes
        direct-io: fix a wrong comment
        direct-io: separate fields only used in the submission path from struct dio
        vfs: fix spinning prevention in prune_icache_sb
        vfs: add a comment to inode_permission()
        vfs: pass all mask flags check_acl and posix_acl_permission
        vfs: add hex format for MAY_* flag values
        vfs: indicate that the permission functions take all the MAY_* flags
        compat: sync compat_stats with statfs.
        vfs: add "device" tag to /proc/self/mountstats
        cleanup: vfs: small comment fix for block_invalidatepage
        ...
      
      Fix up trivial conflict in fs/gfs2/file.c (llseek changes)
      f362f98e
    • Linus Torvalds's avatar
      Merge http://sucs.org/~rohan/git/gfs2-3.0-nmw · f793f296
      Linus Torvalds authored
      * http://sucs.org/~rohan/git/gfs2-3.0-nmw: (24 commits)
        GFS2: Move readahead of metadata during deallocation into its own function
        GFS2: Remove two unused variables
        GFS2: Misc fixes
        GFS2: rewrite fallocate code to write blocks directly
        GFS2: speed up delete/unlink performance for large files
        GFS2: Fix off-by-one in gfs2_blk2rgrpd
        GFS2: Clean up ->page_mkwrite
        GFS2: Correctly set goal block after allocation
        GFS2: Fix AIL flush issue during fsync
        GFS2: Use cached rgrp in gfs2_rlist_add()
        GFS2: Call do_strip() directly from recursive_scan()
        GFS2: Remove obsolete assert
        GFS2: Cache the most recently used resource group in the inode
        GFS2: Make resource groups "append only" during life of fs
        GFS2: Use rbtree for resource groups and clean up bitmap buffer ref count scheme
        GFS2: Fix lseek after SEEK_DATA, SEEK_HOLE have been added
        GFS2: Clean up gfs2_create
        GFS2: Use ->dirty_inode()
        GFS2: Fix bug trap and journaled data fsync
        GFS2: Fix inode allocation error path
        ...
      f793f296
    • Linus Torvalds's avatar
      Merge branch '3.2-without-smb2' of git://git.samba.org/sfrench/cifs-2.6 · dabcbb1b
      Linus Torvalds authored
      * '3.2-without-smb2' of git://git.samba.org/sfrench/cifs-2.6: (52 commits)
        Fix build break when freezer not configured
        Add definition for share encryption
        CIFS: Make cifs_push_locks send as many locks at once as possible
        CIFS: Send as many mandatory unlock ranges at once as possible
        CIFS: Implement caching mechanism for posix brlocks
        CIFS: Implement caching mechanism for mandatory brlocks
        CIFS: Fix DFS handling in cifs_get_file_info
        CIFS: Fix error handling in cifs_readv_complete
        [CIFS] Fixup trivial checkpatch warning
        [CIFS] Show nostrictsync and noperm mount options in /proc/mounts
        cifs, freezer: add wait_event_freezekillable and have cifs use it
        cifs: allow cifs_max_pending to be readable under /sys/module/cifs/parameters
        cifs: tune bdi.ra_pages in accordance with the rsize
        cifs: allow for larger rsize= options and change defaults
        cifs: convert cifs_readpages to use async reads
        cifs: add cifs_async_readv
        cifs: fix protocol definition for READ_RSP
        cifs: add a callback function to receive the rest of the frame
        cifs: break out 3rd receive phase into separate function
        cifs: find mid earlier in receive codepath
        ...
      dabcbb1b
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs · 5619a693
      Linus Torvalds authored
      * 'for-linus' of git://oss.sgi.com/xfs/xfs: (69 commits)
        xfs: add AIL pushing tracepoints
        xfs: put in missed fix for merge problem
        xfs: do not flush data workqueues in xfs_flush_buftarg
        xfs: remove XFS_bflush
        xfs: remove xfs_buf_target_name
        xfs: use xfs_ioerror_alert in xfs_buf_iodone_callbacks
        xfs: clean up xfs_ioerror_alert
        xfs: clean up buffer allocation
        xfs: remove buffers from the delwri list in xfs_buf_stale
        xfs: remove XFS_BUF_STALE and XFS_BUF_SUPER_STALE
        xfs: remove XFS_BUF_SET_VTYPE and XFS_BUF_SET_VTYPE_REF
        xfs: remove XFS_BUF_FINISH_IOWAIT
        xfs: remove xfs_get_buftarg_list
        xfs: fix buffer flushing during unmount
        xfs: optimize fsync on directories
        xfs: reduce the number of log forces from tail pushing
        xfs: Don't allocate new buffers on every call to _xfs_buf_find
        xfs: simplify xfs_trans_ijoin* again
        xfs: unlock the inode before log force in xfs_change_file_space
        xfs: unlock the inode before log force in xfs_fs_nfs_commit_metadata
        ...
      5619a693
    • J. Bruce Fields's avatar
      leases: fix write-open/read-lease race · f3c7691e
      J. Bruce Fields authored
      In setlease, we use i_writecount to decide whether we can give out a
      read lease.
      
      In open, we break leases before incrementing i_writecount.
      
      There is therefore a window between the break lease and the i_writecount
      increment when setlease could add a new read lease.
      
      This would leave us with a simultaneous write open and read lease, which
      shouldn't happen.
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      f3c7691e
    • Andi Kleen's avatar
      nfs: drop unnecessary locking in llseek · 79835a71
      Andi Kleen authored
      This makes NFS follow the standard generic_file_llseek locking scheme.
      
      Cc: Trond.Myklebust@netapp.com
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      79835a71
    • Andi Kleen's avatar
      ext4: replace cut'n'pasted llseek code with generic_file_llseek_size · 4cce0e28
      Andi Kleen authored
      This gives ext4 the benefits of unlocked llseek.
      
      Cc: tytso@mit.edu
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      4cce0e28
    • Andi Kleen's avatar
      vfs: add generic_file_llseek_size · 5760495a
      Andi Kleen authored
      Add a generic_file_llseek variant to the VFS that allows passing in
      the maximum file size of the file system, instead of always
      using maxbytes from the superblock.
      
      This can be used to eliminate some cut'n'paste seek code in ext4.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      5760495a
    • Andi Kleen's avatar
      vfs: do (nearly) lockless generic_file_llseek · ef3d0fd2
      Andi Kleen authored
      The i_mutex lock use of generic _file_llseek hurts.  Independent processes
      accessing the same file synchronize over a single lock, even though
      they have no need for synchronization at all.
      
      Under high utilization this can cause llseek to scale very poorly on larger
      systems.
      
      This patch does some rethinking of the llseek locking model:
      
      First the 64bit f_pos is not necessarily atomic without locks
      on 32bit systems. This can already cause races with read() today.
      This was discussed on linux-kernel in the past and deemed acceptable.
      The patch does not change that.
      
      Let's look at the different seek variants:
      
      SEEK_SET: Doesn't really need any locking.
      If there's a race one writer wins, the other loses.
      
      For 32bit the non atomic update races against read()
      stay the same. Without a lock they can also happen
      against write() now.  The read() race was deemed
      acceptable in past discussions, and I think if it's
      ok for read it's ok for write too.
      
      => Don't need a lock.
      
      SEEK_END: This behaves like SEEK_SET plus it reads
      the maximum size too. Reading the maximum size would have the
      32bit atomic problem. But luckily we already have a way to read
      the maximum size without locking (i_size_read), so we
      can just use that instead.
      
      Without i_mutex there is no synchronization with write() anymore,
      however since the write() update is atomic on 64bit it just behaves
      like another racy SEEK_SET.  On non atomic 32bit it's the same
      as SEEK_SET.
      
      => Don't need a lock, but need to use i_size_read()
      
      SEEK_CUR: This has a read-modify-write race window
      on the same file. One could argue that any application
      doing unsynchronized seeks on the same file is already broken.
      But for the sake of not adding a regression here I'm
      using the file->f_lock to synchronize this. Using this
      lock is much better than the inode mutex because it doesn't
      synchronize between processes.
      
      => So still need a lock, but can use a f_lock.
      
      This patch implements this new scheme in generic_file_llseek.
      I dropped generic_file_llseek_unlocked and changed all callers.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      ef3d0fd2
    • Andi Kleen's avatar
      direct-io: merge direct_io_walker into __blockdev_direct_IO · 847cc637
      Andi Kleen authored
      This doesn't change anything for the compiler, but hch thought it would
      make the code clearer.
      
      I moved the reference counting into its own little inline.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Acked-by: default avatarJeff Moyer <jmoyer@redhat.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      847cc637
    • Andi Kleen's avatar
      direct-io: inline the complete submission path · ba253fbf
      Andi Kleen authored
      Add inlines to all the submission path functions. While this increases
      code size it also gives gcc a lot of optimization opportunities
      in this critical hotpath.
      
      In particular -- together with some other changes -- this
      allows gcc to get rid of the unnecessary clearing of
      sdio at the beginning and optimize the messy parameter passing.
      Any non inlining of a function which takes a sdio parameter
      would break this optimization because they cannot be done if the
      address of a structure is taken.
      
      Note that benefits are only seen with CONFIG_OPTIMIZE_INLINING
      and CONFIG_CC_OPTIMIZE_FOR_SIZE both set to off.
      
      This gives about 2.2% improvement on a large database benchmark
      with a high IOPS rate.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      ba253fbf
    • Andi Kleen's avatar
      direct-io: separate map_bh from dio · 18772641
      Andi Kleen authored
      Only a single b_private field in the map_bh buffer head is needed after
      the submission path. Move map_bh separately to avoid storing
      this information in the long term slab.
      
      This avoids the weird 104 byte hole in struct dio_submit which also needed
      to be memseted early.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      18772641
    • Andi Kleen's avatar
      direct-io: use a slab cache for struct dio · 6e8267f5
      Andi Kleen authored
      A direct slab call is slightly faster than kmalloc and can be better cached
      per CPU. It also avoids rounding to the next kmalloc slab.
      
      In addition this enforces cache line alignment for struct dio to avoid
      any false sharing.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Acked-by: default avatarJeff Moyer <jmoyer@redhat.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      6e8267f5
    • Andi Kleen's avatar
      direct-io: rearrange fields in dio/dio_submit to avoid holes · 0dc2bc49
      Andi Kleen authored
      Fix most problems reported by pahole.
      
      There is still a weird 104 byte hole after map_bh. I'm not sure what
      causes this.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Acked-by: default avatarJeff Moyer <jmoyer@redhat.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      0dc2bc49
    • Andi Kleen's avatar
      direct-io: fix a wrong comment · cde1ecb3
      Andi Kleen authored
      There's nothing on the stack, even before my changes.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Acked-by: default avatarJeff Moyer <jmoyer@redhat.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      cde1ecb3
    • Andi Kleen's avatar
      direct-io: separate fields only used in the submission path from struct dio · eb28be2b
      Andi Kleen authored
      This large, but largely mechanic, patch moves all fields in struct dio
      that are only used in the submission path into a separate on stack
      data structure. This has the advantage that the memory is very likely
      cache hot, which is not guaranteed for memory fresh out of kmalloc.
      
      This also gives gcc more optimization potential because it can easier
      determine that there are no external aliases for these variables.
      
      The sdio initialization is a initialization now instead of memset.
      This allows gcc to break sdio into individual fields and optimize
      away unnecessary zeroing (after all the functions are inlined)
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Acked-by: default avatarJeff Moyer <jmoyer@redhat.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      eb28be2b
    • Christoph Hellwig's avatar
      vfs: fix spinning prevention in prune_icache_sb · 62a3ddef
      Christoph Hellwig authored
      We need to move the inode to the end of the list to actually make the
      spinning prevention explained in the comment above it work.  With a
      plain list_move it will simply stay in place as we're always reclaiming
      from the head of the list.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      62a3ddef
    • Andreas Gruenbacher's avatar
    • Andreas Gruenbacher's avatar
    • Aneesh Kumar K.V's avatar
      vfs: add hex format for MAY_* flag values · 8522ca58
      Aneesh Kumar K.V authored
      We are going to add more flags and having them in hex format
      make it simpler
      Acked-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      Acked-by: default avatarDavid Howells <dhowells@redhat.com>
      Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      8522ca58
    • Andreas Gruenbacher's avatar
    • Eric W. Biederman's avatar
      compat: sync compat_stats with statfs. · 1448c721
      Eric W. Biederman authored
      This was found by inspection while tracking a similar
      bug in compat_statfs64, that has been fixed in mainline
      since decemeber.
      
      - This fixes a bug where not all of the f_spare fields
        were cleared on mips and s390.
      - Add the f_flags field to struct compat_statfs
      - Copy f_flags to userspace in case someone cares.
      - Use __clear_user to copy the f_spare field to userspace
        to ensure that all of the elements of f_spare are cleared.
        On some architectures f_spare is has 5 ints and on some
        architectures f_spare only has 4 ints.  Which makes
        the previous technique of clearing each int individually
        broken.
      
      I don't expect anyone actually uses the old statfs system
      call anymore but if they do let them benefit from having
      the compat and the native version working the same.
      Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      1448c721
    • Linus Torvalds's avatar
      Merge branch 'drm-core-next' of git://people.freedesktop.org/~airlied/linux · 37be944a
      Linus Torvalds authored
      * 'drm-core-next' of git://people.freedesktop.org/~airlied/linux: (290 commits)
        Revert "drm/ttm: add a way to bo_wait for either the last read or last write"
        Revert "drm/radeon/kms: add a new gem_wait ioctl with read/write flags"
        vmwgfx: Don't pass unused arguments to do_dirty functions
        vmwgfx: Emulate depth 32 framebuffers
        drm/radeon: Lower the severity of the radeon lockup messages.
        drm/i915/dp: Fix eDP on PCH DP on CPT/PPT
        drm/i915/dp: Introduce is_cpu_edp()
        drm/i915: use correct SPD type value
        drm/i915: fix ILK+ infoframe support
        drm/i915: add DP test request handling
        drm/i915: read full receiver capability field during DP hot plug
        drm/i915/dp: Remove eDP special cases from bandwidth checks
        drm/i915/dp: Fix the math in intel_dp_link_required
        drm/i915/panel: Always record the backlight level again (but cleverly)
        i915: Move i915_read/write out of line
        drm/i915: remove transcoder PLL mashing from mode_set per specs
        drm/i915: if transcoder disable fails, say which
        drm/i915: set watermarks for third pipe on IVB
        drm/i915: export a CPT mode set verification function
        drm/i915: fix transcoder PLL select masking
        ...
      37be944a
    • Linus Torvalds's avatar
      Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · ca836a25
      Linus Torvalds authored
      * 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86-64, doc: Remove int 0xcc from entry_64.S documentation
        x86, vsyscall: Add missing <asm/fixmap.h> to arch/x86/mm/fault.c
      
      Fix up trivial conflicts in arch/x86/mm/fault.c (asm/fixmap.h vs
      asm/vsyscall.h: both work, which to use? Whatever..)
      ca836a25
    • Linus Torvalds's avatar
      Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · d630ba56
      Linus Torvalds authored
      * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86: uv2: Workaround for UV2 Hub bug (system global address format)
      d630ba56
    • Linus Torvalds's avatar
      Merge branch 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 5fd862f1
      Linus Torvalds authored
      * 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86, ticketlock: remove obsolete comment
        x86, cmpxchg: Use __compiletime_error() to make usage messages a bit nicer
        x86, ticketlock: Make __ticket_spin_trylock common
        x86, ticketlock: Convert __ticket_spin_lock to use xadd()
        x86, ticketlock: Convert spin loop to C
        x86, ticketlock: Clean up types and accessors
        x86: Use xadd helper more widely
        x86: Add xadd helper macro
        x86, cmpxchg: Unify cmpxchg into cmpxchg.h
        x86, cmpxchg: Move 64-bit set64_bit() to match 32-bit
        x86, cmpxchg: Move 32-bit __cmpxchg_wrong_size to match 64 bit.
        x86, cmpxchg: <linux/alternative.h> has LOCK_PREFIX
      5fd862f1
    • Linus Torvalds's avatar
      Merge branch 'x86-rdrand-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 8e6d539e
      Linus Torvalds authored
      * 'x86-rdrand-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86, random: Verify RDRAND functionality and allow it to be disabled
        x86, random: Architectural inlines to get random integers with RDRAND
        random: Add support for architectural random hooks
      
      Fix up trivial conflicts in drivers/char/random.c: the architectural
      random hooks touched "get_random_int()" that was simplified to use MD5
      and not do the keyptr thing any more (see commit 6e5714ea: "net:
      Compute protocol sequence numbers and fragment IDs using MD5").
      8e6d539e
    • Linus Torvalds's avatar
      Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 8237eb94
      Linus Torvalds authored
      * 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86, microcode, AMD: Add microcode revision to /proc/cpuinfo
        x86, microcode: Correct microcode revision format
        coretemp: Get microcode revision from cpu_data
        x86, intel: Use c->microcode for Atom errata check
        x86, intel: Output microcode revision in /proc/cpuinfo
        x86, microcode: Don't request microcode from userspace unnecessarily
      
      Fix up trivial conflicts in arch/x86/kernel/cpu/amd.c (conflict between
      moving AMD BSP code to cpu_dev helper function and adding AMD microcode
      revision to /proc/cpuinfo code)
      8237eb94
    • Linus Torvalds's avatar
      Merge branch 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · cc21fe51
      Linus Torvalds authored
      * 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86: Hyper-V: Integrate the clocksource with Hyper-V detection code
      
      Fix up conflicts in drivers/staging/hv/Makefile manually (some of the hv
      code has moved out of staging to drivers/hv/)
      cc21fe51
    • Linus Torvalds's avatar
      Merge branch 'x86-geode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · a93f3e9f
      Linus Torvalds authored
      * 'x86-geode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86: geode: New PCEngines Alix system driver
      a93f3e9f
    • Linus Torvalds's avatar
      Merge branch 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 107095a9
      Linus Torvalds authored
      * 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86, cpu: Add cpufeature flag for PCIDs
      107095a9
    • Linus Torvalds's avatar
      Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · e34eb39c
      Linus Torvalds authored
      * 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86, amd: Include linux/elf.h since we use stuff from asm/elf.h
        x86: cache_info: Update calculation of AMD L3 cache indices
        x86: cache_info: Kill the atomic allocation in amd_init_l3_cache()
        x86: cache_info: Kill the moronic shadow struct
        x86: cache_info: Remove bogus free of amd_l3_cache data
        x86, amd: Include elf.h explicitly, prepare the code for the module.h split
        x86-32, amd: Move va_align definition to unbreak 32-bit build
        x86, amd: Move BSP code to cpu_dev helper
        x86: Add a BSP cpu_dev helper
        x86, amd: Avoid cache aliasing penalties on AMD family 15h
      e34eb39c