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Kaushal Kumar 4a36e44c45 This is the 3.10.84 stable release
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Merge upstream tag 'v3.10.84' into LA.BR.1.3.3

This merge brings us up-to-date as of upstream tag v3.10.84

* tag 'v3.10.84' (317 commits):
  Linux 3.10.84
  fs: Fix S_NOSEC handling
  KVM: x86: make vapics_in_nmi_mode atomic
  MIPS: Fix KVM guest fixmap address
  x86/PCI: Use host bridge _CRS info on Foxconn K8M890-8237A
  powerpc/perf: Fix book3s kernel to userspace backtraces
  arm: KVM: force execution of HCPTR access on VM exit
  Revert "crypto: talitos - convert to use be16_add_cpu()"
  crypto: talitos - avoid memleak in talitos_alg_alloc()
  sctp: Fix race between OOTB responce and route removal
  packet: avoid out of bounds read in round robin fanout
  packet: read num_members once in packet_rcv_fanout()
  bridge: fix br_stp_set_bridge_priority race conditions
  bridge: fix multicast router rlist endless loop
  sparc: Use GFP_ATOMIC in ldc_alloc_exp_dring() as it can be called in softirq context
  Linux 3.10.83
  bus: mvebu: pass the coherency availability information at init time
  KVM: nSVM: Check for NRIPS support before updating control field
  ARM: clk-imx6q: refine sata's parent
  d_walk() might skip too much
  ipv6: update ip6_rt_last_gc every time GC is run
  ipv6: prevent fib6_run_gc() contention
  xfrm: Increase the garbage collector threshold
  Btrfs: make xattr replace operations atomic
  x86/microcode/intel: Guard against stack overflow in the loader
  fs: take i_mutex during prepare_binprm for set[ug]id executables
  hpsa: add missing pci_set_master in kdump path
  hpsa: refine the pci enable/disable handling
  sb_edac: Fix erroneous bytes->gigabytes conversion
  ACPICA: Utilities: Cleanup to remove useless ACPI_PRINTF/FORMAT_xxx helpers.
  ACPICA: Utilities: Cleanup to convert physical address printing formats.
  __ptrace_may_access() should not deny sub-threads
  include/linux/sched.h: don't use task->pid/tgid in same_thread_group/has_group_leader_pid
  netfilter: Zero the tuple in nfnl_cthelper_parse_tuple()
  netfilter: nfnetlink_cthelper: Remove 'const' and '&' to avoid warnings
  config: Enable NEED_DMA_MAP_STATE by default when SWIOTLB is selected
  get rid of s_files and files_lock
  fput: turn "list_head delayed_fput_list" into llist_head
  Linux 3.10.82
  lpfc: Add iotag memory barrier
  pipe: iovec: Fix memory corruption when retrying atomic copy as non-atomic
  drm/mgag200: Reject non-character-cell-aligned mode widths
  tracing: Have filter check for balanced ops
  crypto: caam - fix RNG buffer cache alignment
  Linux 3.10.81
  btrfs: cleanup orphans while looking up default subvolume
  btrfs: incorrect handling for fiemap_fill_next_extent return
  cfg80211: wext: clear sinfo struct before calling driver
  mm/memory_hotplug.c: set zone->wait_table to null after freeing it
  drm/i915: Fix DDC probe for passive adapters
  pata_octeon_cf: fix broken build
  ozwpan: unchecked signed subtraction leads to DoS
  ozwpan: divide-by-zero leading to panic
  ozwpan: Use proper check to prevent heap overflow
  MIPS: Fix enabling of DEBUG_STACKOVERFLOW
  ring-buffer-benchmark: Fix the wrong sched_priority of producer
  USB: serial: ftdi_sio: Add support for a Motion Tracker Development Board
  USB: cp210x: add ID for HubZ dual ZigBee and Z-Wave dongle
  block: fix ext_dev_lock lockdep report
  Input: elantech - fix detection of touchpads where the revision matches a known rate
  ALSA: usb-audio: add MAYA44 USB+ mixer control names
  ALSA: usb-audio: Add mic volume fix quirk for Logitech Quickcam Fusion
  ALSA: hda/realtek - Add a fixup for another Acer Aspire 9420
  iio: adis16400: Compute the scan mask from channel indices
  iio: adis16400: Use != channel indices for the two voltage channels
  iio: adis16400: Report pressure channel scale
  xen: netback: read hotplug script once at start of day.
  udp: fix behavior of wrong checksums
  net_sched: invoke ->attach() after setting dev->qdisc
  unix/caif: sk_socket can disappear when state is unlocked
  net: dp83640: fix broken calibration routine.
  bridge: fix parsing of MLDv2 reports
  ipv4: Avoid crashing in ip_error
  net: phy: Allow EEE for all RGMII variants
  Linux 3.10.80
  fs/binfmt_elf.c:load_elf_binary(): return -EINVAL on zero-length mappings
  vfs: read file_handle only once in handle_to_path
  ACPI / init: Fix the ordering of acpi_reserve_resources()
  Input: elantech - fix semi-mt protocol for v3 HW
  rtlwifi: rtl8192cu: Fix kernel deadlock
  md/raid5: don't record new size if resize_stripes fails.
  svcrpc: fix potential GSSX_ACCEPT_SEC_CONTEXT decoding failures
  ARM: fix missing syscall trace exit
  ARM: dts: imx27: only map 4 Kbyte for fec registers
  crypto: s390/ghash - Fix incorrect ghash icv buffer handling.
  rt2x00: add new rt2800usb device DWA 130
  libata: Ignore spurious PHY event on LPM policy change
  libata: Add helper to determine when PHY events should be ignored
  ext4: check for zero length extent explicitly
  ext4: convert write_begin methods to stable_page_writes semantics
  mmc: atmel-mci: fix bad variable type for clkdiv
  powerpc: Align TOC to 256 bytes
  usb: gadget: configfs: Fix interfaces array NULL-termination
  usb-storage: Add NO_WP_DETECT quirk for Lacie 059f:0651 devices
  USB: cp210x: add ID for KCF Technologies PRN device
  USB: pl2303: Remove support for Samsung I330
  USB: visor: Match I330 phone more precisely
  xhci: gracefully handle xhci_irq dead device
  xhci: Solve full event ring by increasing TRBS_PER_SEGMENT to 256
  xhci: fix isoc endpoint dequeue from advancing too far on transaction error
  target/pscsi: Don't leak scsi_host if hba is VIRTUAL_HOST
  ASoC: wm8994: correct BCLK DIV 348 to 384
  ASoC: wm8960: fix "RINPUT3" audio route error
  ASoC: mc13783: Fix wrong mask value used in mc13xxx_reg_rmw() calls
  ALSA: hda - Add headphone quirk for Lifebook E752
  ALSA: hda - Add Conexant codecs CX20721, CX20722, CX20723 and CX20724
  d_walk() might skip too much
  lib: Fix strnlen_user() to not touch memory after specified maximum
  hwmon: (ntc_thermistor) Ensure iio channel is of type IIO_VOLTAGE
  libceph: request a new osdmap if lingering request maps to no osd
  lguest: fix out-by-one error in address checking.
  fs, omfs: add NULL terminator in the end up the token list
  KVM: MMU: fix CR4.SMEP=1, CR0.WP=0 with shadow pages
  net: socket: Fix the wrong returns for recvmsg and sendmsg
  kernel: use the gnu89 standard explicitly
  staging, rtl8192e, LLVMLinux: Remove unused inline prototype
  staging: rtl8712, rtl8712: avoid lots of build warnings
  staging, rtl8192e, LLVMLinux: Change extern inline to static inline
  drm/i915: Fix declaration of intel_gmbus_{is_forced_bit/is_port_falid}
  staging: wlags49_h2: fix extern inline functions
  Linux 3.10.79
  ACPICA: Utilities: Cleanup to enforce ACPI_PHYSADDR_TO_PTR()/ACPI_PTR_TO_PHYSADDR().
  ACPICA: Tables: Change acpi_find_root_pointer() to use acpi_physical_address.
  revert "softirq: Add support for triggering softirq work on softirqs"
  sound/oss: fix deadlock in sequencer_ioctl(SNDCTL_SEQ_OUTOFBAND)
  mmc: card: Don't access RPMB partitions for normal read/write
  pinctrl: Don't just pretend to protect pinctrl_maps, do it for real
  drm/i915: Add missing MacBook Pro models with dual channel LVDS
  ARM: mvebu: armada-xp-openblocks-ax3-4: Disable internal RTC
  ARM: dts: imx23-olinuxino: Fix dr_mode of usb0
  ARM: dts: imx28: Fix AUART4 TX-DMA interrupt name
  ARM: dts: imx25: Add #pwm-cells to pwm4
  gpio: sysfs: fix memory leaks and device hotplug
  gpio: unregister gpiochip device before removing it
  xen/console: Update console event channel on resume
  mm/memory-failure: call shake_page() when error hits thp tail page
  nilfs2: fix sanity check of btree level in nilfs_btree_root_broken()
  ocfs2: dlm: fix race between purge and get lock resource
  Linux 3.10.78
  ARC: signal handling robustify
  UBI: fix soft lockup in ubi_check_volume()
  Drivers: hv: vmbus: Don't wait after requesting offers
  ARM: dts: dove: Fix uart[23] reg property
  staging: panel: fix lcd type
  usb: gadget: printer: enqueue printer's response for setup request
  usb: host: oxu210hp: use new USB_RESUME_TIMEOUT
  3w-sas: fix command completion race
  3w-9xxx: fix command completion race
  3w-xxxx: fix command completion race
  ext4: fix data corruption caused by unwritten and delayed extents
  rbd: end I/O the entire obj_request on error
  serial: of-serial: Remove device_type = "serial" registration
  ALSA: hda - Fix mute-LED fixed mode
  ALSA: emu10k1: Emu10k2 32 bit DMA mode
  ALSA: emu10k1: Fix card shortname string buffer overflow
  ALSA: emux: Fix mutex deadlock in OSS emulation
  ALSA: emux: Fix mutex deadlock at unloading
  ipv4: Missing sk_nulls_node_init() in ping_unhash().
  Linux 3.10.77
  s390: Fix build error
  nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
  memstick: mspro_block: add missing curly braces
  C6x: time: Ensure consistency in __init
  wl18xx: show rx_frames_per_rates as an array as it really is
  lib: memzero_explicit: use barrier instead of OPTIMIZER_HIDE_VAR
  e1000: add dummy allocator to fix race condition between mtu change and netpoll
  ksoftirqd: Enable IRQs and call cond_resched() before poking RCU
  RCU pathwalk breakage when running into a symlink overmounting something
  drm/i915: cope with large i2c transfers
  drm/radeon: fix doublescan modes (v2)
  i2c: core: Export bus recovery functions
  IB/mlx4: Fix WQE LSO segment calculation
  IB/core: don't disallow registering region starting at 0x0
  IB/core: disallow registering 0-sized memory region
  stk1160: Make sure current buffer is released
  mvsas: fix panic on expander attached SATA devices
  Drivers: hv: vmbus: Fix a bug in the error path in vmbus_open()
  xtensa: provide __NR_sync_file_range2 instead of __NR_sync_file_range
  xtensa: xtfpga: fix hardware lockup caused by LCD driver
  ACPICA: Utilities: split IO address types from data type models.
  drivers: parport: Kconfig: exclude arm64 for PARPORT_PC
  scsi: storvsc: Fix a bug in copy_from_bounce_buffer()
  UBI: fix check for "too many bytes"
  UBI: initialize LEB number variable
  UBI: fix out of bounds write
  UBI: account for bitflips in both the VID header and data
  tools/power turbostat: Use $(CURDIR) instead of $(PWD) and add support for O= option in Makefile
  powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH
  ext4: make fsync to sync parent dir in no-journal for real this time
  arm64: kernel: compiling issue, need delete read_current_timer()
  video: vgacon: Don't build on arm64
  console: Disable VGA text console support on cris
  drivers: parport: Kconfig: exclude h8300 for PARPORT_PC
  parport: disable PC-style parallel port support on cris
  rtlwifi: rtl8192cu: Add new device ID
  rtlwifi: rtl8192cu: Add new USB ID
  ptrace: fix race between ptrace_resume() and wait_task_stopped()
  fs/binfmt_elf.c: fix bug in loading of PIE binaries
  Input: elantech - fix absolute mode setting on some ASUS laptops
  ALSA: emu10k1: don't deadlock in proc-functions
  usb: core: hub: use new USB_RESUME_TIMEOUT
  usb: host: sl811: use new USB_RESUME_TIMEOUT
  usb: host: xhci: use new USB_RESUME_TIMEOUT
  usb: host: isp116x: use new USB_RESUME_TIMEOUT
  usb: host: r8a66597: use new USB_RESUME_TIMEOUT
  usb: define a generic USB_RESUME_TIMEOUT macro
  usb: phy: Find the right match in devm_usb_phy_match
  ARM: S3C64XX: Use fixed IRQ bases to avoid conflicts on Cragganmore
  ARM: 8320/1: fix integer overflow in ELF_ET_DYN_BASE
  power_supply: lp8788-charger: Fix leaked power supply on probe fail
  ring-buffer: Replace this_cpu_*() with __this_cpu_*()
  spi: spidev: fix possible arithmetic overflow for multi-transfer message
  cdc-wdm: fix endianness bug in debug statements
  MIPS: Hibernate: flush TLB entries earlier
  KVM: use slowpath for cross page cached accesses
  s390/hibernate: fix save and restore of kernel text section
  KVM: s390: Zero out current VMDB of STSI before including level3 data.
  usb: gadget: composite: enable BESL support
  Btrfs: fix inode eviction infinite loop after cloning into it
  Btrfs: fix log tree corruption when fs mounted with -o discard
  tcp: avoid looping in tcp_send_fin()
  tcp: fix possible deadlock in tcp_send_fin()
  ip_forward: Drop frames with attached skb->sk
  Linux 3.10.76
  dcache: Fix locking bugs in backported "deal with deadlock in d_walk()"
  arc: mm: Fix build failure
  sb_edac: avoid INTERNAL ERROR message in EDAC with unspecified channel
  x86: mm: move mmap_sem unlock from mm_fault_error() to caller
  vm: make stack guard page errors return VM_FAULT_SIGSEGV rather than SIGBUS
  vm: add VM_FAULT_SIGSEGV handling support
  deal with deadlock in d_walk()
  move d_rcu from overlapping d_child to overlapping d_alias
  kconfig: Fix warning "‘jump’ may be used uninitialized"
  KVM: x86: SYSENTER emulation is broken
  netfilter: conntrack: disable generic tracking for known protocols
  Bluetooth: Ignore isochronous endpoints for Intel USB bootloader
  Bluetooth: Add support for Intel bootloader devices
  Bluetooth: btusb: Add IMC Networks (Broadcom based)
  Bluetooth: Add firmware update for Atheros 0cf3:311f
  Bluetooth: Enable Atheros 0cf3:311e for firmware upload
  mm: Fix NULL pointer dereference in madvise(MADV_WILLNEED) support
  splice: Apply generic position and size checks to each write
  jfs: fix readdir regression
  serial: 8250_dw: Fix deadlock in LCR workaround
  benet: Call dev_kfree_skby_any instead of kfree_skb.
  ixgb: Call dev_kfree_skby_any instead of dev_kfree_skb.
  tg3: Call dev_kfree_skby_any instead of dev_kfree_skb.
  bnx2: Call dev_kfree_skby_any instead of dev_kfree_skb.
  r8169: Call dev_kfree_skby_any instead of dev_kfree_skb.
  8139too: Call dev_kfree_skby_any instead of dev_kfree_skb.
  8139cp: Call dev_kfree_skby_any instead of kfree_skb.
  tcp: tcp_make_synack() should clear skb->tstamp
  tcp: fix FRTO undo on cumulative ACK of SACKed range
  ipv6: Don't reduce hop limit for an interface
  tcp: prevent fetching dst twice in early demux code
  remove extra definitions of U32_MAX
  conditionally define U32_MAX
  Linux 3.10.75
  pagemap: do not leak physical addresses to non-privileged userspace
  console: Fix console name size mismatch
  IB/mlx4: Saturate RoCE port PMA counters in case of overflow
  kernel.h: define u8, s8, u32, etc. limits
  net: llc: use correct size for sysctl timeout entries
  net: rds: use correct size for max unacked packets and bytes
  ipc: fix compat msgrcv with negative msgtyp
  core, nfqueue, openvswitch: fix compilation warning
  media: s5p-mfc: fix mmap support for 64bit arch
  iscsi target: fix oops when adding reject pdu
  ocfs2: _really_ sync the right range
  be2iscsi: Fix kernel panic when device initialization fails
  cifs: fix use-after-free bug in find_writable_file
  usb: xhci: apply XHCI_AVOID_BEI quirk to all Intel xHCI controllers
  cpuidle: ACPI: do not overwrite name and description of C0
  dmaengine: omap-dma: Fix memory leak when terminating running transfer
  iio: imu: Use iio_trigger_get for indio_dev->trig assignment
  iio: inv_mpu6050: Clear timestamps fifo while resetting hardware fifo
  Defer processing of REQ_PREEMPT requests for blocked devices
  USB: ftdi_sio: Use jtag quirk for SNAP Connect E10
  USB: ftdi_sio: Added custom PID for Synapse Wireless product
  radeon: Do not directly dereference pointers to BIOS area.
  writeback: fix possible underflow in write bandwidth calculation
  writeback: add missing INITIAL_JIFFIES init in global_update_bandwidth()
  mm/memory hotplug: postpone the reset of obsolete pgdat
  nbd: fix possible memory leak
  iwlwifi: dvm: run INIT firmware again upon .start()
  IB/uverbs: Prevent integer overflow in ib_umem_get address arithmetic
  IB/core: Avoid leakage from kernel to user space
  tcp: Fix crash in TCP Fast Open
  selinux: fix sel_write_enforce broken return value
  ALSA: hda - Fix headphone pin config for Lifebook T731
  ALSA: usb - Creative USB X-Fi Pro SB1095 volume knob support
  ALSA: hda - Add one more node in the EAPD supporting candidate list
  Linux 3.10.74
  net: ethernet: pcnet32: Setup the SRAM and NOUFLO on Am79C97{3, 5}
  powerpc/mpc85xx: Add ranges to etsec2 nodes
  hfsplus: fix B-tree corruption after insertion at position 0
  dm: hold suspend_lock while suspending device during device deletion
  vt6655: RFbSetPower fix missing rate RATE_12M
  perf: Fix irq_work 'tail' recursion
  Revert "iwlwifi: mvm: fix failure path when power_update fails in add_interface"
  mac80211: drop unencrypted frames in mesh fwding
  mac80211: disable u-APSD queues by default
  nl80211: ignore HT/VHT capabilities without QoS/WMM
  tcm_qla2xxx: Fix incorrect use of __transport_register_session
  tcm_fc: missing curly braces in ft_invl_hw_context()
  ASoC: wm8955: Fix wrong value references for boolean kctl
  ASoC: adav80x: Fix wrong value references for boolean kctl
  ASoC: ak4641: Fix wrong value references for boolean kctl
  ASoC: wm8904: Fix wrong value references for boolean kctl
  ASoC: wm8903: Fix wrong value references for boolean kctl
  ASoC: wm2000: Fix wrong value references for boolean kctl
  ASoC: wm8731: Fix wrong value references for boolean kctl
  ASoC: tas5086: Fix wrong value references for boolean kctl
  ASoC: wm8960: Fix wrong value references for boolean kctl
  ASoC: cs4271: Fix wrong value references for boolean kctl
  ASoC: sgtl5000: remove useless register write clearing CHRGPUMP_POWERUP

Change-Id: Ib7976ee2c7224e39074157e28db4158db40b00db
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>
2015-09-30 13:25:40 +05:30
Al Viro dc404456eb constify ->actor
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Git-commit: b2497fc3057ae27db9aa29579f16ae5afb6d6d08
Git-repo: https://android.googlesource.com/kernel/common.git
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>
2015-09-16 18:20:09 +05:30
Al Viro bf531f8b92 introduce ->iterate(), ctx->pos, dir_emit()
New method - ->iterate(file, ctx).  That's the replacement for ->readdir();
it takes callback from ctx->actor, uses ctx->pos instead of file->f_pos and
calls dir_emit(ctx, ...) instead of filldir(data, ...).  It does *not*
update file->f_pos (or look at it, for that matter); iterate_dir() does the
update.

Note that dir_emit() takes the offset from ctx->pos (and eventually
filldir_t will lose that argument).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Git-commit: 83fd542759010949ac7d9638b615fac1bb9744e1
Git-repo: https://android.googlesource.com/kernel/common.git
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>
2015-09-16 18:20:09 +05:30
Al Viro c4696ecbc4 introduce iterate_dir() and dir_context
iterate_dir(): new helper, replacing vfs_readdir().

struct dir_context: contains the readdir callback (and will get more stuff
in it), embedded into whatever data that callback wants to deal with;
eventually, we'll be passing it to ->readdir() replacement instead of
(data,filldir) pair.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Git-commit: c301a0e047e401d41b26db1009d08e088ae2365a
Git-repo: https://android.googlesource.com/kernel/common.git
Signed-off-by: Kaushal Kumar <kaushalk@codeaurora.org>
2015-09-16 18:20:08 +05:30
Al Viro 6637ecd306 move d_rcu from overlapping d_child to overlapping d_alias
commit 946e51f2bf37f1656916eb75bd0742ba33983c28 upstream.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ben Hutchings <ben@decadent.org.uk>
[hujianyang: Backported to 3.10 refer to the work of Ben Hutchings in 3.2:
 - Apply name changes in all the different places we use d_alias and d_child
 - Move the WARN_ON() in __d_free() to d_free() as we don't have dentry_free()]
Signed-off-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-29 10:34:00 +02:00
Sasha Levin b67bfe0d42 hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived

        list_for_each_entry(pos, head, member)

The hlist ones were greedy and wanted an extra parameter:

        hlist_for_each_entry(tpos, pos, head, member)

Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.

Besides the semantic patch, there was some manual work required:

 - Fix up the actual hlist iterators in linux/list.h
 - Fix up the declaration of other iterators based on the hlist ones.
 - A very small amount of places were using the 'node' parameter, this
 was modified to use 'obj->member' instead.
 - Coccinelle didn't handle the hlist_for_each_entry_safe iterator
 properly, so those had to be fixed up manually.

The semantic patch which is mostly the work of Peter Senna Tschudin is here:

@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;

type T;
expression a,c,d,e;
identifier b;
statement S;
@@

-T b;
    <+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
    ...+>

[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:24 -08:00
Linus Torvalds 982197277c Merge branch 'for-3.8' of git://linux-nfs.org/~bfields/linux
Pull nfsd update from Bruce Fields:
 "Included this time:

   - more nfsd containerization work from Stanislav Kinsbursky: we're
     not quite there yet, but should be by 3.9.

   - NFSv4.1 progress: implementation of basic backchannel security
     negotiation and the mandatory BACKCHANNEL_CTL operation.  See

       http://wiki.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues

     for remaining TODO's

   - Fixes for some bugs that could be triggered by unusual compounds.
     Our xdr code wasn't designed with v4 compounds in mind, and it
     shows.  A more thorough rewrite is still a todo.

   - If you've ever seen "RPC: multiple fragments per record not
     supported" logged while using some sort of odd userland NFS client,
     that should now be fixed.

   - Further work from Jeff Layton on our mechanism for storing
     information about NFSv4 clients across reboots.

   - Further work from Bryan Schumaker on his fault-injection mechanism
     (which allows us to discard selective NFSv4 state, to excercise
     rarely-taken recovery code paths in the client.)

   - The usual mix of miscellaneous bugs and cleanup.

  Thanks to everyone who tested or contributed this cycle."

* 'for-3.8' of git://linux-nfs.org/~bfields/linux: (111 commits)
  nfsd4: don't leave freed stateid hashed
  nfsd4: free_stateid can use the current stateid
  nfsd4: cleanup: replace rq_resused count by rq_next_page pointer
  nfsd: warn on odd reply state in nfsd_vfs_read
  nfsd4: fix oops on unusual readlike compound
  nfsd4: disable zero-copy on non-final read ops
  svcrpc: fix some printks
  NFSD: Correct the size calculation in fault_inject_write
  NFSD: Pass correct buffer size to rpc_ntop
  nfsd: pass proper net to nfsd_destroy() from NFSd kthreads
  nfsd: simplify service shutdown
  nfsd: replace boolean nfsd_up flag by users counter
  nfsd: simplify NFSv4 state init and shutdown
  nfsd: introduce helpers for generic resources init and shutdown
  nfsd: make NFSd service structure allocated per net
  nfsd: make NFSd service boot time per-net
  nfsd: per-net NFSd up flag introduced
  nfsd: move per-net startup code to separated function
  nfsd: pass net to __write_ports() and down
  nfsd: pass net to nfsd_set_nrthreads()
  ...
2012-12-20 14:04:11 -08:00
Cyrill Gorcunov 711c7bf991 fs, exportfs: add exportfs_encode_inode_fh() helper
We will need this helper in the next patch to provide a file handle for
inotify marks in /proc/pid/fdinfo output.

The patch is rather providing the way to use inodes directly when dentry
is not available (like in case of inotify system).

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: James Bottomley <jbottomley@parallels.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matthew Helsley <matt.helsley@gmail.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17 17:15:27 -08:00
Cyrill Gorcunov ab49bdecc3 fs, exportfs: escape nil dereference if no s_export_op present
This routine will be used to generate a file handle in fdinfo output for
inotify subsystem, where if no s_export_op present the general
export_encode_fh should be used.  Thus add a test if s_export_op present
inside exportfs_encode_fh itself.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: James Bottomley <jbottomley@parallels.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matthew Helsley <matt.helsley@gmail.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17 17:15:27 -08:00
Namjae Jeon 216b6cbdcb exportfs: add FILEID_INVALID to indicate invalid fid_type
This commit adds FILEID_INVALID = 0xff in fid_type to
indicate invalid fid_type

It avoids using magic number 255

Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Vivek Trivedi <vtrivedi018@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-11-07 19:22:30 -05:00
Al Viro 765927b2d5 switch dentry_open() to struct path, make it grab references itself
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-23 00:01:29 +04:00
Al Viro b3d9b7a3c7 vfs: switch i_dentry/d_alias to hlist
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-14 16:32:55 +04:00
Al Viro b0b0382bb4 ->encode_fh() API change
pass inode + parent's inode or NULL instead of dentry + bool saying
whether we want the parent or not.

NOTE: that needs ceph fix folded in.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-29 23:28:33 -04:00
Aneesh Kumar K.V becfd1f375 vfs: Add open by file handle support
[AV: duplicate of open() guts removed; file_open_root() used instead]

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-15 02:21:44 -04:00
Aneesh Kumar K.V 5fe0c23788 exportfs: Return the minimum required handle size
The exportfs encode handle function should return the minimum required
handle size. This helps user to find out the handle size by passing 0
handle size in the first step and then redoing to the call again with
the returned handle size value.

Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-14 09:15:28 -04:00
Nick Piggin 873feea09e fs: dcache per-inode inode alias locking
dcache_inode_lock can be replaced with per-inode locking. Use existing
inode->i_lock for this. This is slightly non-trivial because we sometimes
need to find the inode from the dentry, which requires d_inode to be
stabilised (either with refcount or d_lock).

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07 17:50:31 +11:00
Nick Piggin dc0474be3e fs: dcache rationalise dget variants
dget_locked was a shortcut to avoid the lazy lru manipulation when we already
held dcache_lock (lru manipulation was relatively cheap at that point).
However, how that the lru lock is an innermost one, we never hold it at any
caller, so the lock cost can now be avoided. We already have well working lazy
dcache LRU, so it should be fine to defer LRU manipulations to scan time.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07 17:50:24 +11:00
Nick Piggin b5c84bf6f6 fs: dcache remove dcache_lock
dcache_lock no longer protects anything. remove it.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07 17:50:23 +11:00
Nick Piggin b23fb0a603 fs: scale inode alias list
Add a new lock, dcache_inode_lock, to protect the inode's i_dentry list
from concurrent modification. d_alias is also protected by d_lock.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07 17:50:22 +11:00
Christoph Hellwig 0461ee2616 exportfs: use dget_parent
Use dget_parent instead of opencoding it.  This simplifies the code, but
more importanly prepares for the more complicated locking for a parent
dget in the dcache scale patch series.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-25 21:26:13 -04:00
J. Bruce Fields dc7a08166f nfs: new subdir Documentation/filesystems/nfs
We're adding enough nfs documentation that it may as well have its own
subdirectory.

Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-10-27 19:34:04 -04:00
James Morris cbacc2c7f0 Merge branch 'next' into for-linus 2008-12-25 11:40:09 +11:00
J. Bruce Fields a4f4d6df53 EXPORTFS: handle NULL returns from fh_to_dentry()/fh_to_parent()
While 440037287c "[PATCH] switch all filesystems over to
d_obtain_alias" removed some cases where fh_to_dentry() and
fh_to_parent() could return NULL, there are still a few NULL returns
left in individual filesystems.  Thus it was a mistake for that commit
to remove the handling of NULL returns in the callers.

Revert those parts of 440037287c which removed the NULL handling.

(We could, alternatively, modify all implementations to return -ESTALE
instead of NULL, but that proves to require fixing a number of
filesystems, and in some cases it's arguably more natural to return
NULL.)

Thanks to David for original patch and Linus, Christoph, and Hugh for
review.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Cc: David Howells <dhowells@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-08 19:49:32 -08:00
David Howells 745ca2475a CRED: Pass credentials through dentry_open()
Pass credentials through dentry_open() so that the COW creds patch can have
SELinux's flush_unauthorized_files() pass the appropriate creds back to itself
when it opens its null chardev.

The security_dentry_open() call also now takes a creds pointer, as does the
dentry_open hook in struct security_operations.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: James Morris <jmorris@namei.org>
2008-11-14 10:39:22 +11:00
Al Viro 53c9c5c0e3 [PATCH] prepare vfs_readdir() callers to returning filldir result
It's not the final state, but it allows moving ->readdir() instances
to passing filldir return value to caller of vfs_readdir().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-23 05:13:10 -04:00
Al Viro f3f8e17571 [PATCH] reduce the stack footprint of exportfs_decode_fh()
no need to have _two_ 256-byte arrays on stack...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-23 05:13:03 -04:00
Christoph Hellwig 440037287c [PATCH] switch all filesystems over to d_obtain_alias
Switch all users of d_alloc_anon to d_obtain_alias.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-23 05:13:01 -04:00
Harvey Harrison 8e24eea728 fs: replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30 08:29:54 -07:00
Christoph Hellwig e38f981758 exportfs: update documentation
Update documentation to the current state of affairs.  Remove duplicated
method descruptions in exportfs.h and point to Documentation/filesystems/
Exporting instead.  Add a little file header comment in expfs.c describing
what's going on and mentioning Neils and my copyright [1].

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Neil Brown <neilb@suse.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: <linux-ext4@vger.kernel.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: David Chinner <dgc@sgi.com>
Cc: Timothy Shimmin <tes@sgi.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Chris Mason <mason@suse.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-22 08:13:21 -07:00
Christoph Hellwig 3965516440 exportfs: make struct export_operations const
Now that nfsd has stopped writing to the find_exported_dentry member we an
mark the export_operations const

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Neil Brown <neilb@suse.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: <linux-ext4@vger.kernel.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: David Chinner <dgc@sgi.com>
Cc: Timothy Shimmin <tes@sgi.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Chris Mason <mason@suse.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-22 08:13:21 -07:00
Christoph Hellwig cfaea787c0 exportfs: remove old methods
Now that all filesystems are converted remove support for the old methods.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Neil Brown <neilb@suse.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: <linux-ext4@vger.kernel.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: David Chinner <dgc@sgi.com>
Cc: Timothy Shimmin <tes@sgi.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Chris Mason <mason@suse.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-22 08:13:21 -07:00
Christoph Hellwig 2596110a39 exportfs: add new methods
Add the guts for the new filesystem API to exportfs.

There's now a fh_to_dentry method that returns a dentry for the object looked
for given a filehandle fragment, and a fh_to_parent operation that returns the
dentry for the encoded parent directory in case the file handle contains it.

There are default implementations for these methods that only take a callback
for an nfs-enhanced iget variant and implement the rest of the semantics.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Neil Brown <neilb@suse.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: <linux-ext4@vger.kernel.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: David Chinner <dgc@sgi.com>
Cc: Timothy Shimmin <tes@sgi.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Chris Mason <mason@suse.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-22 08:13:19 -07:00
Christoph Hellwig 6e91ea2bb0 exportfs: add fid type
This patchset is a medium scale rewrite of the export operations interface.
The goal is to make the interface less complex, and easier to understand from
the filesystem side, aswell as preparing generic support for exporting of
64bit inode numbers.

This touches all nfs exporting filesystems, and I've done testing on all of
the filesystems I have here locally (xfs, ext2, ext3, reiserfs, jfs)

This patch:

Add a structured fid type so that we don't have to pass an array of u32 values
around everywhere.  It's a union of possible layouts.

As a start there's only the u32 array and the traditional 32bit inode format,
but there will be more in one of my next patchset when I start to document the
various filehandle formats we have in lowlevel filesystems better.

Also add an enum that gives the various filehandle types human- readable
names.

Note: Some people might think the struct containing an anonymous union is
ugly, but I didn't want to pass around a raw union type.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Neil Brown <neilb@suse.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: <linux-ext4@vger.kernel.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: David Chinner <dgc@sgi.com>
Cc: Timothy Shimmin <tes@sgi.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Chris Mason <mason@suse.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-22 08:13:19 -07:00
Christoph Hellwig 019ab801cf knfsd: exportfs: split out reconnecting a dentry from find_exported_dentry
There's a clear subfunctionality of reconnecting a given dentry to the main
dentry tree in find_exported_dentry, that can be called both for the dentry
we're looking for or it's parent directory.

This patch splits the subfunctionality out into a separate helper to make the
code more readable and document it's intent.  As a nice side-optimization we
can avoid getting a superfluous dentry reference count in the case we need to
reconnect a directory on it's own.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Christoph Hellwig dd90b50906 knfsd: exportfs: add find_disconnected_root helper
Break the loop that finds the root of a disconnected subtree into a helper of
its own to make reading easier and document the intent.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Christoph Hellwig fb66a1989c knfsd: exportfs: move acceptable check into find_acceptable_alias
All callers of find_acceptable_alias check if the current dentry is acceptable
before looking for other acceptable aliases using find_acceptable_alias.  Move
the check into find_acceptable_alias to make the code a little more dense and
add a comment to find_acceptable_alias that documents its intent.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Christoph Hellwig d7dd618a59 knfsd: exportfs: untangle ISDIR logic in find_exported_dentry
Rework some logic in find_exported_dentry so that we only have a single
S_ISDIR check and logic that makes clear to the reader what we're really doing
here.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Christoph Hellwig 10f11c341d knfsd: exportfs: remove CALL macro
Currently exportfs uses a way to call methods very differently from the rest
of the kernel.  This patch changes it to the standard conventions for method
calls.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Christoph Hellwig d37065cd6d knfsd: exportfs: add procedural interface for NFSD
Currently NFSD calls directly into filesystems through the export_operations
structure.  I plan to change this interface in various ways in later patches,
and want to avoid the export of the default operations to NFSD, so this patch
adds two simple exportfs_encode_fh/exportfs_decode_fh helpers for NFSD to call
instead of poking into exportfs guts.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Christoph Hellwig 5ca2960733 knfsd: exportfs: remove iget abuse
When the exportfs interface was added the expectation was that filesystems
provide an operation to convert from a file handle to an inode/dentry, but it
kept a backwards compat option that still calls into iget.

Calling into iget from non-filesystem code is very bad, because it gives too
little information to filesystem, and simply crashes if the filesystem doesn't
implement the ->read_inode routine.

Fortunately there are only two filesystems left using this fallback: efs and
jfs.  This patch moves a copy of export_iget to each of those to implement the
get_dentry method.

While this is a temporary increase of lines of code in the kernel it allows
for a much cleaner interface and important code restructuring in later
patches.

[akpm@linux-foundation.org: add jfs_get_inode_flags() declaration]
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Christoph Hellwig a569425512 knfsd: exportfs: add exportfs.h header
currently the export_operation structure and helpers related to it are in
fs.h.  fs.h is already far too large and there are very few places needing the
export bits, so split them off into a separate header.

[akpm@linux-foundation.org: fix cifs build]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:06 -07:00
Randy Dunlap e63340ae6b header cleaning: don't include smp_lock.h when not used
Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
David Howells afefdbb28a [PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers
These patches make the kernel pass 64-bit inode numbers internally when
communicating to userspace, even on a 32-bit system.  They are required
because some filesystems have intrinsic 64-bit inode numbers: NFS3+ and XFS
for example.  The 64-bit inode numbers are then propagated to userspace
automatically where the arch supports it.

Problems have been seen with userspace (eg: ld.so) using the 64-bit inode
number returned by stat64() or getdents64() to differentiate files, and
failing because the 64-bit inode number space was compressed to 32-bits, and
so overlaps occur.

This patch:

Make filldir_t take a 64-bit inode number and struct kstat carry a 64-bit
inode number so that 64-bit inode numbers can be passed back to userspace.

The stat functions then returns the full 64-bit inode number where
available and where possible.  If it is not possible to represent the inode
number supplied by the filesystem in the field provided by userspace, then
error EOVERFLOW will be issued.

Similarly, the getdents/readdir functions now pass the full 64-bit inode
number to userspace where possible, returning EOVERFLOW instead when a
directory entry is encountered that can't be properly represented.

Note that this means that some inodes will not be stat'able on a 32-bit
system with old libraries where they were before - but it does mean that
there will be no ambiguity over what a 32-bit inode number refers to.

Note similarly that directory scans may be cut short with an error on a
32-bit system with old libraries where the scan would work before for the
same reasons.

It is judged unlikely that this situation will occur because modern glibc
uses 64-bit capable versions of stat and getdents class functions
exclusively, and that older systems are unlikely to encounter
unrepresentable inode numbers anyway.

[akpm: alpha build fix]
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03 08:03:40 -07:00
Peter Staubach 8c7b389e53 [PATCH] NFS server subtree_check returns dubious value
Address a problem found when a Linux NFS server uses the "subtree_check"
export option.

The "subtree_check" NFS export option was designed to prohibit a client
from using a file handle for which it should not have permission.  The
algorithm used is to ensure that the entire path to the file being
referenced is accessible to the user attempting to use the file handle.  If
some part of the path is not accessible, then the operation is aborted and
the appropriate version of ESTALE is returned to the NFS client.

The error, ESTALE, is unfortunate in that it causes NFS clients to make
certain assumptions about the continued existence of the file.  They assume
that the file no longer exists and refuse to attempt to access it again.
In this case, the file really does exist, but access was denied by the
server for a particular user.

A better error to return would be an EACCES sort of error.  This would
inform the client that the particular operation that it was attempting was
not allowed, without the nasty side effects of the ESTALE error.

Signed-off-by: Peter Staubach <staubach@redhat.com>
Acked-By: NeilBrown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-05-21 12:59:16 -07:00
Christoph Hellwig e2f99018eb [PATCH] exportfs: add find_acceptable_alias helper
find_exported_dentry contains two duplicate loops to find an alias that the
acceptable callback likes.  Split this out to a new helper and switch from
list_for_each to list_for_each_entry to make it more readable.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-18 19:20:28 -08:00
Jes Sorensen 1b1dcc1b57 [PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
This patch converts the inode semaphore to a mutex. I have tested it on
XFS and compiled as much as one can consider on an ia64. Anyway your
luck with it might be different.

Modified-by: Ingo Molnar <mingo@elte.hu>

(finished the conversion)

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2006-01-09 15:59:24 -08:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00