Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This code has never worked correctly, doesn't disable interrupts when
set as a module parameter, doesn't disable interrupts when set after
driver load time in sysfs node, etc.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Mask off flags in the ioctl path to prevent memory scribble with older MegaCLI
versions.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

The following patch for megaraid_sas fixes the reglockFlags field for
degraded raid5/6 for MR9360/9380, which will result in a performance
improvement.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Don't call kthread_stop with a spin lock held and interrupts
disabled because kthread_stop will sleep waiting for the thread
to stop.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Welcome to Arvind Kumar, our new pvscsi maintainer.
Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This patch fixes a bug where devloss is not called on fc_host teardown.
The issue is seen if the LLDD uses rport_rolechg to add the target role
to an rport.

When an rport goes away, the LLDD will call fc_remote_port_delete, which
will start the devloss timer.  If the timer expires, the transport will
call the devloss callback and set the FC_RPORT_DEVLOSS_CALLBK_DONE flag.
However, the rport structure is not deleted, it is retained to store the
SCSI id mappings for the rport in case it comes back. In the scenario
where it does come back, and the driver calls fc_remote_port_add, but does
not indicate the "target" role for the rport - the create will clear the
structure, but forgets to clear FC_RPORT_DEVLOSS_CALLBK_DONE flag (which
is cleared if it's added with the target role). The secondary call, of
fc_remote_port_rolechg to add the target role also does not clear the flag.
Thus, the next time the rport goes away, the resulting devloss timer
expiration will not call the driver callback as the flag is still set.

This patch adds the FC_RPORT_DEVLOSS_CALLBK_DONE flags to the list of
those that are cleared upon reuse of the rport structure.
Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This patch adds a check-condition in scsi_dh_alua handler for a retry.
Sometimes, I have seen attach failing due to this check-condition with
following error messages on NetApp E series storage.

Dec  7 15:31:01 nilgiris kernel: [102979.696673] scsi 3:0:2:9: alua: port group 00 rel port 01
Dec  7 15:31:01 nilgiris kernel: [102979.697082] scsi 3:0:2:9: alua: rtpg failed with 8000002
Dec  7 15:31:01 nilgiris kernel: [102979.697086] scsi 3:0:2:9: alua: rtpg sense code 06/2a/01
Dec  7 15:31:01 nilgiris kernel: [102979.697088] scsi 3:0:2:9: alua: not attached
Signed-off-by: Babu Moger <babu.moger@netapp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This patch re-implements LUN Masking feature using SCSI Slave Callouts.  With
the new design in the slave_alloc entry point; for each new LUN discovered we
check with our internal LUN Masking config whether to expose or to mask this
particular LUN. We return -ENXIO (No such device or address) from slave_alloc
for the LUNs we don't want to be exposed.  We also notify the SCSI mid-layer
to do a sequential LUN scan rather than REPORT_LUNS based scan if LUN masking
is enabled on our HBA port, since a -ENXIO from any LUN in REPORT_LUNS based
scan translates to a scan abort.  This patch also handles the dynamic lun
masking config change from enable to disable or vice-versa by resetting
sdev_bflags of LUN 0 appropriately.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

This patch reverts the current LUN Masking Implementation.  We re-implemented
this feature using the SCSI Slave Callout's as per the review comments.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Patch fixes the possible NULL pointer dereference when we try to add or delete
a rpwwn to the lunmask config which is not zoned to this port.  Check if the
FCS rport is not NULL before de-referencing it.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

skb_linearize already has a check for skb_is_nonlinear,
there is no need to duplicate the check in fcoe.c. This
patch simply removes the unnecessary check and calls
skb_linearize unconditionally.
Reported-by: patrick kelle <patrick.kelle81@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Acked-by: patrick kelle <patrick.kelle81@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

If ql4xdisablesysfsboot = 0 and sendtargets entry as boot index then
driver does export sendtarget entries in sysfs but iscsistart does not
do discovery. So in this case let driver do the discovery and
login to the targets.
Signed-off-by: Manish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

A wrong default timeout value programmed in the adapter causes driver
to wait for that much time while waiting for target discoveries to complete.
This could add huge delays during the driver load time. To avoid this,
limit the default timeout value to 12 seconds if the default timeout value
set in adapter is less than 12 seconds and greater than 120 seconds.
Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

Make qla4xxx_build_ddb_list shorter by adding more helper functions.
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

In alloc_pdu, libcxgbi tries to allocate a skb with GFP_ATOMIC, which
may potentially fail. When it happens, the current code prints a warning
message.

When the system is under IO stress, this failure may happen lots of
times and it usually scares users.

Instead of printing the warning message, the code now increases the
tx_dropped statistics for the ethernet interface wich is doing the iscsi
task.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Acked-by: Karen Xie <kxie@chelsio.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

sym53c8xx_slave_destroy unconditionally assumes that sym53c8xx_slave_alloc has
succesesfully allocated a sym_lcb. This can lead to a NULL pointer dereference
(exposed by commit 4e6c82b3).
Signed-off-by: Stratos Psomadakis <psomas@gentoo.org>
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

If create_singlethread_workqueue() failes, rdac_init should fail too.
Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: "Moger, Babu" <Babu.Moger@netapp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

MTD pull for 3.3

* tag 'for-linus-3.3' of git://git.infradead.org/mtd-2.6: (113 commits)
  mtd: Fix dependency for MTD_DOC200x
  mtd: do not use mtd->block_markbad directly
  logfs: do not use 'mtd->block_isbad' directly
  mtd: introduce mtd_can_have_bb helper
  mtd: do not use mtd->suspend and mtd->resume directly
  mtd: do not use mtd->lock, unlock and is_locked directly
  mtd: do not use mtd->sync directly
  mtd: harmonize mtd_writev usage
  mtd: do not use mtd->lock_user_prot_reg directly
  mtd: mtd->write_user_prot_reg directly
  mtd: do not use mtd->read_*_prot_reg directly
  mtd: do not use mtd->get_*_prot_info directly
  mtd: do not use mtd->read_oob directly
  mtd: mtdoops: do not use mtd->panic_write directly
  romfs: do not use mtd->get_unmapped_area directly
  mtd: do not use mtd->get_unmapped_area directly
  mtd: do use mtd->point directly
  mtd: introduce mtd_has_oob helper
  mtd: mtdcore: export symbols cleanup
  mtd: clean-up the default_mtd_writev function
  ...

Fix up trivial edit/remove conflict in drivers/staging/spectra/lld_mtd.c

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (53 commits)
  iommu/amd: Set IOTLB invalidation timeout
  iommu/amd: Init stats for iommu=pt
  iommu/amd: Remove unnecessary cache flushes in amd_iommu_resume
  iommu/amd: Add invalidate-context call-back
  iommu/amd: Add amd_iommu_device_info() function
  iommu/amd: Adapt IOMMU driver to PCI register name changes
  iommu/amd: Add invalid_ppr callback
  iommu/amd: Implement notifiers for IOMMUv2
  iommu/amd: Implement IO page-fault handler
  iommu/amd: Add routines to bind/unbind a pasid
  iommu/amd: Implement device aquisition code for IOMMUv2
  iommu/amd: Add driver stub for AMD IOMMUv2 support
  iommu/amd: Add stat counter for IOMMUv2 events
  iommu/amd: Add device errata handling
  iommu/amd: Add function to get IOMMUv2 domain for pdev
  iommu/amd: Implement function to send PPR completions
  iommu/amd: Implement functions to manage GCR3 table
  iommu/amd: Implement IOMMUv2 TLB flushing routines
  iommu/amd: Add support for IOMMUv2 domain mode
  iommu/amd: Add amd_iommu_domain_direct_map function
  ...

* 'drm-core-next' of git://people.freedesktop.org/~airlied/linux: (307 commits)
  drm/nouveau/pm: fix build with HWMON off
  gma500: silence gcc warnings in mid_get_vbt_data()
  drm/ttm: fix condition (and vs or)
  drm/radeon: double lock typo in radeon_vm_bo_rmv()
  drm/radeon: use after free in radeon_vm_bo_add()
  drm/sis|via: don't return stack garbage from free_mem ioctl
  drm/radeon/kms: remove pointless CS flags priority struct
  drm/radeon/kms: check if vm is supported in VA ioctl
  drm: introduce drm_can_sleep and use in intel/radeon drivers. (v2)
  radeon: Fix disabling PCI bus mastering on big endian hosts.
  ttm: fix agp since ttm tt rework
  agp: Fix multi-line warning message whitespace
  drm/ttm/dma: Fix accounting error when calling ttm_mem_global_free_page and don't try to free freed pages.
  drm/ttm/dma: Only call set_pages_array_wb when the page is not in WB pool.
  drm/radeon/kms: sync across multiple rings when doing bo moves v3
  drm/radeon/kms: Add support for multi-ring sync in CS ioctl (v2)
  drm/radeon: GPU virtual memory support v22
  drm: make DRM_UNLOCKED ioctls with their own mutex
  drm: no need to hold global mutex for static data
  drm/radeon/benchmark: common modes sweep ignores 640x480@32
  ...

Fix up trivial conflicts in radeon/evergreen.c and vmwgfx/vmwgfx_kms.c

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (64 commits)
  Input: tc3589x-keypad - add missing kerneldoc
  Input: ucb1400-ts - switch to using dev_xxx() for diagnostic messages
  Input: ucb1400_ts - convert to threaded IRQ
  Input: ucb1400_ts - drop inline annotations
  Input: usb1400_ts - add __devinit/__devexit section annotations
  Input: ucb1400_ts - set driver owner
  Input: ucb1400_ts - convert to use dev_pm_ops
  Input: psmouse - make sure we do not use stale methods
  Input: evdev - do not block waiting for an event if fd is nonblock
  Input: evdev - if no events and non-block, return EAGAIN not 0
  Input: evdev - only allow reading events if a full packet is present
  Input: add driver for pixcir i2c touchscreens
  Input: samsung-keypad - implement runtime power management support
  Input: tegra-kbc - report wakeup key for some platforms
  Input: tegra-kbc - add device tree bindings
  Input: add driver for AUO In-Cell touchscreens using pixcir ICs
  Input: mpu3050 - configure the sampling method
  Input: mpu3050 - ensure we enable interrupts
  Input: mpu3050 - add of_match table for device-tree probing
  Input: sentelic - document the latest hardware
  ...

Fix up fairly trivial conflicts (device tree matching conflicting with
some independent cleanups) in drivers/input/keyboard/samsung-keypad.c

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (68 commits)
  hid-input/battery: add FEATURE quirk
  hid-input/battery: remove battery_val
  hid-input/battery: power-supply type really *is* a battery
  hid-input/battery: make the battery setup common for INPUTs and FEATUREs
  hid-input/battery: deal with both FEATURE and INPUT report batteries
  hid-input/battery: add quirks for battery
  hid-input/battery: remove apparently redundant kmalloc
  hid-input: add support for HID devices reporting Battery Strength
  HID: hid-multitouch: add support 9 new Xiroku devices
  HID: multitouch: add support for 3M 32"
  HID: multitouch: add support of Atmel multitouch panels
  HID: usbhid: defer LED setting to a workqueue
  HID: usbhid: hid-core: submit queued urbs before suspend
  HID: usbhid: remove LED_ON
  HID: emsff: use symbolic name instead of hardcoded PID constant
  HID: Enable HID_QUIRK_MULTI_INPUT for Trio Linker Plus II
  HID: Kconfig: fix syntax
  HID: introduce proper dependency of HID_BATTERY on POWER_SUPPLY
  HID: multitouch: support PixArt optical touch screen
  HID: make parser more verbose about parsing errors by default
  ...

Fix up rename/delete conflict in drivers/hid/hid-hyperv.c (removed in
staging, moved in this branch) and similarly for the rules for same file
in drivers/staging/hv/{Kconfig,Makefile}.

SCSI updates for post 3.2 merge window

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (67 commits)
  [SCSI] lpfc 8.3.28: Update driver version to 8.3.28
  [SCSI] lpfc 8.3.28: Add Loopback support for SLI4 adapters
  [SCSI] lpfc 8.3.28: Critical Miscellaneous fixes
  [SCSI] Lpfc 8.3.28: FC and SCSI Discovery Fixes
  [SCSI] lpfc 8.3.28: Add support for ABTS failure handling
  [SCSI] lpfc 8.3.28: SLI fixes and added SLI4 support
  [SCSI] lpfc 8.3.28: Miscellaneous fixes in sysfs and mgmt interfaces
  [SCSI] mpt2sas: Removed redundant calling of _scsih_probe_devices() from _scsih_probe
  [SCSI] mac_scsi: Remove obsolete IRQ_FLG_* users
  [SCSI] qla4xxx: Update driver version to 5.02.00-k10
  [SCSI] qla4xxx: check for FW alive before calling chip_reset
  [SCSI] qla4xxx: Fix qla4xxx_dump_buffer to dump buffer correctly
  [SCSI] qla4xxx: Fix the IDC locking mechanism
  [SCSI] qla4xxx: Wait for disable_acb before doing set_acb
  [SCSI] qla4xxx: Don't recover adapter if device state is FAILED
  [SCSI] qla4xxx: fix call trace on rmmod with ql4xdontresethba=1
  [SCSI] qla4xxx: Fix CPU lockups when ql4xdontresethba set
  [SCSI] qla4xxx: Perform context resets in case of context failures.
  [SCSI] iscsi class: export pid of process that created
  [SCSI] mpt2sas: Remove unused duplicate diag_buffer_enable param
  ...

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: omap_wdt.c: fix the WDIOC_GETBOOTSTATUS ioctl if not implemented.
  watchdog: new driver for VIA chipsets
  watchdog: ath79_wdt: flush register writes
  drivers/watchdog/lantiq_wdt.c: drop iounmap for devm_ allocated data
  watchdog: documentation: describe nowayout in coversion-guide
  watchdog: documentation: update index file
  watchdog: Convert wm831x driver to devm_kzalloc()
  watchdog: add nowayout helpers to Watchdog Timer Driver Kernel API
  watchdog: convert drivers/watchdog/* to use module_platform_driver()
  watchdog: Use DEFINE_SPINLOCK() for static spinlocks
  watchdog: Convert Wolfson drivers to module_platform_driver

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (40 commits)
  regulator: set constraints.apply_uV to 0 in of_get_fixed_voltage_config
  regulator: max8925: fix enabled/disabled judgement mistake
  regulator: add regulator_bulk_force_disable function
  regulator: pass regulator_register of_node in fixed voltage driver
  regulator: add regulator_force_disable() definition for !CONFIG_REGULATOR
  regulator: Enable supply regulator if child rail is enabled.
  regulator: mc13892: Convert to devm_kzalloc()
  regulator: mc13783: Convert to devm_kzalloc()
  regulator: Fix checking return value of create_regulator
  regulator: Fix the error handling if create_regulator fails
  regulator: Export regulator_is_supported_voltage()
  regulator: mc13892: add device tree probe support
  regulator: mc13892: remove the unnecessary prefix from regulator name
  regulator: Convert wm831x regulator drivers to devm_kzalloc()
  regulator: da9052: Staticize non-exported symbols
  regulator: Replace kzalloc with devm_kzalloc and if-else with a switch-case for da9052-regulator
  regulator: Update da9052-regulator for DT changes
  regulator: DA9052/53 Regulator support
  regulator: pass device_node to of_get_regulator_init_data()
  regulator: If a single voltage is set with device tree then set apply_uV
  ...

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (31 commits)
  pinctrl: remove unnecessary max pin number
  pinctrl: correct a offset while enumerating pins
  pinctrl: some typo fixes
  pinctrl: rename U300 and SIRF pin controllers
  pinctrl: pass name instead of device to pin_config_*
  pinctrl: add "struct seq_file;" to pinconf.h
  pinctrl: conjure names for unnamed pins
  pinctrl: add a group-specific hog macro
  pinctrl: don't create a device for each pin controller
  arm/u300: don't use PINMUX_MAP_PRIMARY*
  pinctrl: implement PINMUX_MAP_SYS_HOG
  pinctrl: add a pin config interface
  pinctrl/coh901: driver to request its pins
  pinctrl: u300-pinmux: register proper GPIO ranges
  pinctrl: move the U300 GPIO driver to pinctrl
  ARM: u300: localize GPIO assignments
  pinctrl: make it possible to add multiple maps
  pinctrl: make a copy of pinmux map
  pinctrl: GPIO direction support for muxing
  pinctrl: print pin range in GPIO range debugs
  ...

* 'upstream-linus' of git://github.com/jgarzik/libata-dev:
  ahci: support the STA2X11 I/O Hub
  pata_bf54x: fix BMIDE status register emulation
  ata: add ata port hibernate callbacks
  ata: update ata port's runtime status during system resume
  [SCSI] runtime resume parent for child's system-resume
  ahci: platform support for suspend/resume
  libata-core: kill duplicate statement in ata_do_set_mode()
  pata_of_platform: remove direct dependency on OF_IRQ
  SATA/PATA: convert drivers/ata/* to use module_platform_driver()
  pata_cs5536: forward port changes from cs5536
  libata-sff: use ATAPI_{COD|IO}
  ata: add ata port runtime PM callbacks
  ata: add ata port system PM callbacks
  [SCSI] sd: check runtime PM status in sd_shutdown
  [SCSI] check runtime PM status in system PM
  [SCSI] add flag to skip the runtime PM calls on the host
  ata: make ata port as parent device of scsi host
  ahci: start engine only during soft/hard resets

* 'stable/for-linus-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (37 commits)
  xen/pciback: Expand the warning message to include domain id.
  xen/pciback: Fix "device has been assigned to X domain!" warning
  xen/pciback: Move the PCI_DEV_FLAGS_ASSIGNED ops to the "[un|]bind"
  xen/xenbus: don't reimplement kvasprintf via a fixed size buffer
  xenbus: maximum buffer size is XENSTORE_PAYLOAD_MAX
  xen/xenbus: Reject replies with payload > XENSTORE_PAYLOAD_MAX.
  Xen: consolidate and simplify struct xenbus_driver instantiation
  xen-gntalloc: introduce missing kfree
  xen/xenbus: Fix compile error - missing header for xen_initial_domain()
  xen/netback: Enable netback on HVM guests
  xen/grant-table: Support mappings required by blkback
  xenbus: Use grant-table wrapper functions
  xenbus: Support HVM backends
  xen/xenbus-frontend: Fix compile error with randconfig
  xen/xenbus-frontend: Make error message more clear
  xen/privcmd: Remove unused support for arch specific privcmp mmap
  xen: Add xenbus_backend device
  xen: Add xenbus device driver
  xen: Add privcmd device driver
  xen/gntalloc: fix reference counts on multi-page mappings
  ...

Merge branch 'stable/for-linus-fixes-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

* 'stable/for-linus-fixes-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/mmu: Fix compile errors introduced by x86/memblock mismerge.

* 'kvm-updates/3.3' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (74 commits)
  KVM: PPC: Whitespace fix for kvm.h
  KVM: Fix whitespace in kvm_para.h
  KVM: PPC: annotate kvm_rma_init as __init
  KVM: x86 emulator: implement RDPMC (0F 33)
  KVM: x86 emulator: fix RDPMC privilege check
  KVM: Expose the architectural performance monitoring CPUID leaf
  KVM: VMX: Intercept RDPMC
  KVM: SVM: Intercept RDPMC
  KVM: Add generic RDPMC support
  KVM: Expose a version 2 architectural PMU to a guests
  KVM: Expose kvm_lapic_local_deliver()
  KVM: x86 emulator: Use opcode::execute for Group 9 instruction
  KVM: x86 emulator: Use opcode::execute for Group 4/5 instructions
  KVM: x86 emulator: Use opcode::execute for Group 1A instruction
  KVM: ensure that debugfs entries have been created
  KVM: drop bsp_vcpu pointer from kvm struct
  KVM: x86: Consolidate PIT legacy test
  KVM: x86: Do not rely on implicit inclusions
  KVM: Make KVM_INTEL depend on CPU_SUP_INTEL
  KVM: Use memdup_user instead of kmalloc/copy_from_user
  ...

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Add a cast here to silence a Gcc warning.
drivers/gpu/drm/gma500/mid_bios.c:214:28: warning:
  cast from pointer to integer of different size [-Wpointer-to-int-cast]
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

The "if (!p && !p->dev)" condition isn't right because || was intended
instead of &&.  But actually, "p" is the list cursor and so it's always
non-NULL and we can just remove that bit.  We can remove the another
similar check as well.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  vfs: new helper - d_make_root()
  dcache: use a dispose list in select_parent
  ceph: d_alloc_root() may fail
  ext4: fix failure exits
  isofs: inode leak on mount failure

d_alloc_root() with iput() in case of allocation failure...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

select_parent currently abuses the dentry cache LRU to provide
cleanup features for child dentries that need to be freed. It moves
them to the tail of the LRU, then tells shrink_dcache_parent() to
calls __shrink_dcache_sb to unconditionally move them to a dispose
list (as DCACHE_REFERENCED is ignored). __shrink_dcache_sb() has to
relock the dentries to move them off the LRU onto the dispose list,
but otherwise does not touch the dentries that select_parent() moved
to the tail of the LRU. It then passses the dispose list to
shrink_dentry_list() which tries to free the dentries.

IOWs, the use of __shrink_dcache_sb() is superfluous - we can build
exactly the same list of dentries for disposal directly in
select_parent() and call shrink_dentry_list() instead of calling
__shrink_dcache_sb() to do that. This means that we avoid long holds
on the lru lock walking the LRU moving dentries to the dispose list
We also avoid the need to relock each dentry just to move it off the
LRU, reducing the numebr of times we lock each dentry to dispose of
them in shrink_dcache_parent() from 3 to 2 times.

Further, we remove one of the two callers of __shrink_dcache_sb().
This also means that __shrink_dcache_sb can be moved into back into
prune_dcache_sb() and we no longer have to handle referenced
dentries conditionally, simplifying the code.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next:
  sparc32: remove unused file: include/asm/pgtsun4.h
  sparc32: fix PAGE_SIZE definition
  sparc32: enable different preemptions models
  sparc32: support atomic64_t
  apbuart: fix section mismatch warning
  sparc32: drop useless preprocessor conditional in atomic_32.h
  sparc32: drop unused atomic24 support