Граф коммитов

243473 Коммитов

Автор SHA1 Сообщение Дата
Gustavo F. Padovan 48454079c2 Bluetooth: Create struct l2cap_chan
struct l2cap_chan cames to create a clear separation between what
properties and data belongs to the L2CAP channel and what belongs to the
socket. By now we just fold the struct sock * in struct l2cap_chan as all
the channel info is struct l2cap_pinfo today.

In the next commits we will see a move of channel stuff to struct
l2cap_chan.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-07 18:06:25 -03:00
Alexey Dobriyan db940cb0db Bluetooth: convert net/bluetooth/ to kstrtox
Convert from strict_strto*() interfaces to kstrto*() interfaces.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-05 13:21:11 -03:00
Gustavo F. Padovan e63a15ec0f Bluetooth: Use GFP_KERNEL in user context
The allocation in mgmt_control() code are in user context and not locked
by any spinlock, so it's not recommended the use of GFP_ATOMIC there.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-05 13:03:10 -03:00
Gustavo F. Padovan 1322901da5 Bluetooth: Don't use spin_lock_bh in user context
spin_lock() and spin_unlock() are more apropiated for user context.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-05 12:58:40 -03:00
Szymon Janc fada4ac339 Bluetooth: Use kthread API in cmtp
kernel_thread() is a low-level implementation detail and
EXPORT_SYMBOL(kernel_thread) is scheduled for removal.
Use the <linux/kthread.h> API instead.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-05 12:40:47 -03:00
Szymon Janc f4d7cd4a4c Bluetooth: Use kthread API in bnep
kernel_thread() is a low-level implementation detail and
EXPORT_SYMBOL(kernel_thread) is scheduled for removal.
Use the <linux/kthread.h> API instead.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-05 12:40:47 -03:00
Szymon Janc aabf6f897e Bluetooth: Use kthread API in hidp
kernel_thread() is a low-level implementation detail and
EXPORT_SYMBOL(kernel_thread) is scheduled for removal.
Use the <linux/kthread.h> API instead.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-05 12:40:46 -03:00
Johan Hedberg a88a9652d2 Bluetooth: Add mgmt_remote_name event
This patch adds a new remote_name event to the Management interface
which is sent every time the name of a remote device is resolved (over
BR/EDR).

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-04 18:47:38 -03:00
Johan Hedberg e17acd40f6 Bluetooth: Add mgmt_device_found event
This patch adds a device_found event to the Management interface. For
now the event only maps to BR/EDR inquiry result HCI events, but in the
future the plan is to also use it for the LE device discovery process.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-04 18:47:06 -03:00
Gustavo F. Padovan 1e429f3842 Bluetooth: Remove gfp_mask param from hci_reassembly()
It is unnecessary, once we are always in interrupt context.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-04 18:25:14 -03:00
Gustavo F. Padovan 220b881a77 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-2.6 2011-03-31 16:26:01 -03:00
Thomas Gleixner 6f5ef998b7 Bluetooth: Fix warning with hci_cmd_timer
After we made debugobjects working again, we got the following:

WARNING: at lib/debugobjects.c:262 debug_print_object+0x8e/0xb0()
Hardware name: System Product Name
ODEBUG: free active (active state 0) object type: timer_list hint: hci_cmd_timer+0x0/0x60
Pid: 2125, comm: dmsetup Tainted: G        W   2.6.38-06707-gc62b389 #110375
Call Trace:
 [<ffffffff8104700a>] warn_slowpath_common+0x7a/0xb0
 [<ffffffff810470b6>] warn_slowpath_fmt+0x46/0x50
 [<ffffffff812d3a5e>] debug_print_object+0x8e/0xb0
 [<ffffffff81bd8810>] ? hci_cmd_timer+0x0/0x60
 [<ffffffff812d4685>] debug_check_no_obj_freed+0x125/0x230
 [<ffffffff810f1063>] ? check_object+0xb3/0x2b0
 [<ffffffff810f3630>] kfree+0x150/0x190
 [<ffffffff81be4d06>] ? bt_host_release+0x16/0x20
 [<ffffffff81be4d06>] bt_host_release+0x16/0x20
 [<ffffffff813a1907>] device_release+0x27/0xa0
 [<ffffffff812c519c>] kobject_release+0x4c/0xa0
 [<ffffffff812c5150>] ? kobject_release+0x0/0xa0
 [<ffffffff812c61f6>] kref_put+0x36/0x70
 [<ffffffff812c4d37>] kobject_put+0x27/0x60
 [<ffffffff813a21f7>] put_device+0x17/0x20
 [<ffffffff81bda4f9>] hci_free_dev+0x29/0x30
 [<ffffffff81928be6>] vhci_release+0x36/0x70
 [<ffffffff810fb366>] fput+0xd6/0x1f0
 [<ffffffff810f8fe6>] filp_close+0x66/0x90
 [<ffffffff810f90a9>] sys_close+0x99/0xf0
 [<ffffffff81d4c96b>] system_call_fastpath+0x16/0x1b

That timer was introduced with commit 6bd32326cda(Bluetooth: Use
proper timer for hci command timout)

Timer seems to be running when the thing is closed. Removing the timer
unconditionally fixes the problem. And yes, it needs to be fixed
before the HCI_UP check.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:25:26 -03:00
Andrei Emeltchenko 34bd0273b6 Bluetooth: delete hanging L2CAP channel
Sometimes L2CAP connection remains hanging. Make sure that
L2CAP channel is deleted.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:25:26 -03:00
Johan Hedberg 08ba53824a Bluetooth: Fix missing hci_dev_lock_bh in user_confirm_reply
The code was correctly calling _unlock at the end of the function but
there was no actual _lock call anywhere.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:25:25 -03:00
Vinicius Costa Gomes 8693ac900e Bluetooth: Fix sending LE data over USB
Now that we have support for LE connections, before discarding a
frame we must check if there's a LE connection over that transport.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:25:25 -03:00
Gustavo F. Padovan 105721328f Bluetooth: Fix HCI_RESET command synchronization
We can't send new commands before a cmd_complete for the HCI_RESET command
shows up.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Reported-by: Ed Tomlinson <edt@aei.ca>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Tested-by: Justin P. Mattock <justinmattock@gmail.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Ed Tomlinson <edt@aei.ca>
2011-03-31 14:25:25 -03:00
Suraj Sumangala 23e9fde2b3 Bluetooth: Increment unacked_frames count only the first transmit
This patch lets 'l2cap_pinfo.unacked_frames' be incremented only
the first time a frame is transmitted.

Previously it was being incremented for retransmitted packets
too resulting the value to cross the transmit window size.

Signed-off-by: Suraj Sumangala <suraj@atheros.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:25:25 -03:00
Marc-Antoine Perennou 88d377b6c3 Bluetooth: add support for Apple MacBook Pro 8,2
Just adding the vendor details makes it work fine.

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:25:25 -03:00
Johan Hedberg 80a1e1dbf6 Bluetooth: Add local Extended Inquiry Response (EIR) support
This patch adds automated creation of the local EIR data based on what
16-bit UUIDs are registered and what the device name is. This should
cover the majority use cases, however things like 32/128-bit UUIDs, TX
power and Device ID will need to be added later to be on par with what
bluetoothd is capable of doing (without the Management interface).

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:58 -03:00
Andrei Emeltchenko e90165be9a Bluetooth: check L2CAP info_rsp ident and state
Information requests/responses are unbound to L2CAP channel. Patch
fixes issue arising when two devices connects at the same time to
each other. This way we do not process out of the context messages.
We are safe dropping info_rsp since info_timer is left running.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:58 -03:00
Gustavo F. Padovan d1010240fa Bluetooth: Move bt_accept_enqueue() to outside __l2cap_chan_add
bt_accept_enqueue() is not really a channel action, so do it outside.
This patch is part of a set of patches to create an struct l2cap_chan to
have a clear separation between the struct sock and the L2CAP channel
stuff.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:57 -03:00
Gustavo F. Padovan f3dd4f0f58 Bluetooth: Remove unused struct l2cap_conn item
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:57 -03:00
Szymon Janc ce85ee13e6 Bluetooth: Enable support for out of band association model
If remote side reports oob availability or we are pairing initiator
use oob data for pairing if available.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:57 -03:00
Szymon Janc 2763eda6cc Bluetooth: Add add/remove_remote_oob_data management commands
This patch adds commands to add and remove remote OOB data to the managment
interface. Remote data is stored in kernel and can be used by corresponding
HCI commands and events when needed.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:57 -03:00
Szymon Janc c35938b2f5 Bluetooth: Add read_local_oob_data management command
This patch adds a command to read local OOB data to the managment interface.
The command maps directly to the Read Local OOB Data HCI command.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:57 -03:00
Szymon Janc 8fce6357a9 Bluetooth: Allow for NULL data in mgmt_pending_add
Since index is in mgmt_hdr it is possible to have mgmt command with
no parameters that still needs to add itself to pending list.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:57 -03:00
Szymon Janc c68fb7ff29 Bluetooth: Rename cmd to param in pending_cmd
This field holds not whole command but only command specific
parameters.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:56 -03:00
Szymon Janc e0e185efba Bluetooth: Fix checkpatch error in cmtp.h
Do not use C99 // comments.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:56 -03:00
Szymon Janc ffd13320aa Bluetooth: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
As warned by checkpatch.pl, use #include <linux/uaccess.h> instead of
<asm/uaccess.h>

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:56 -03:00
Szymon Janc 58aac468be Bluetooth: Do not use assignments in IF conditions
Fix checkpatch warnings concerning assignments in if conditions.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:56 -03:00
Szymon Janc 17f09a7e4e Bluetooth: Fix checkpatch errors, code style issues and typos in hidp
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:56 -03:00
Szymon Janc 8c20aa9ffc Bluetooth: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
As warned by checkpatch.pl, use #include <linux/uaccess.h> instead of
<asm/uaccess.h>

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:55 -03:00
Szymon Janc 3aad75a128 Bluetooth: Fix checkpatch errors and some code style issues in bnep
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:55 -03:00
Szymon Janc a3d9bd4c00 Bluetooth: Opencode macros in bnep/core.c
BNEP_RX_TYPES and INCA macros have only one user each and don't provide
any benefits compared to opencoding them.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:55 -03:00
Gustavo F. Padovan 2c6d1a2eec Bluetooth: Improve error message on wrong link type
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:54 -03:00
Gustavo F. Padovan b0d2199d6f Bluetooth: Remove unused struct item
num in struct l2cap_chan_list isn't used anywhere.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:54 -03:00
Johan Hedberg b312b161ec Bluetooth: mgmt: Add support for setting the local name
This patch adds a new set_local_name management command as well as a
local_name_changed management event. With these user space can both
change the local name as well as monitor changes to it by others.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:54 -03:00
Johan Hedberg dc4fe30b86 Bluetooth: mgmt: Add local name information to read_info reply
This patch adds the name of the adapter to the reply of the read_info
management command.

The management messages reserve 249 bytes for the name instead of 248
(like in the HCI spec) so that there is always a guarantee that it is
nul-terminated. That way it can safely be passed onto string
manipulation functions.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:54 -03:00
Johan Hedberg 1f6c6378c5 Bluetooth: Add define for the maximum name length on HCI level
This patch adds a clear define for the maximum device name length in HCI
messages and thereby avoids magic numbers in the code.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:54 -03:00
Gustavo F. Padovan f0681a68dd Bluetooth: remove unnecessary function declaration
hci_notify() doesn't need declaration first.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-03-31 14:22:53 -03:00
Linus Torvalds 0ce790e7d7 Linux 2.6.39-rc1 2011-03-29 12:09:47 -07:00
Linus Torvalds 6b2a4f7a5b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (26 commits)
  mmc: SDHI should depend on SUPERH || ARCH_SHMOBILE
  mmc: tmio_mmc: Move some defines into a shared header
  mmc: tmio: support aggressive clock gating
  mmc: tmio: fix power-mode interpretation
  mmc: tmio: remove work-around for unmasked SDIO interrupts
  sh: fix SDHI IO address-range
  ARM: mach-shmobile: fix SDHI IO address-range
  mmc: tmio: only access registers above 0xff, if available
  mfd: remove now redundant sh_mobile_sdhi.h header
  sh: convert boards to use linux/mmc/sh_mobile_sdhi.h
  ARM: mach-shmobile: convert boards to use linux/mmc/sh_mobile_sdhi.h
  mmc: tmio: convert the SDHI MMC driver from MFD to a platform driver
  sh: ecovec: use the CONFIG_MMC_TMIO symbols instead of MFD
  mmc: tmio: split core functionality, DMA and MFD glue
  mmc: tmio: use PIO for short transfers
  mmc: tmio-mmc: Improve DMA stability on sh-mobile
  mmc: fix mmc_app_send_scr() for dma transfer
  mmc: sdhci-esdhc: enable esdhc on imx53
  mmc: sdhci-esdhc: use writel/readl as general APIs
  mmc: sdhci: add the abort CMDTYPE bits definition
  ...
2011-03-29 12:09:30 -07:00
Linus Torvalds eefbab5995 Merge branch 'frv' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-frv
* 'frv' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-frv:
  FRV: Use generic show_interrupts()
  FRV: Convert genirq namespace
  frv: Select GENERIC_HARDIRQS_NO_DEPRECATED
  frv: Convert cpu irq_chip to new functions
  frv: Convert mb93493 irq_chip to new functions
  frv: Convert mb93093 irq_chip to new function
  frv: Convert mb93091 irq_chip to new functions
  frv: Fix typo from __do_IRQ overhaul
  frv: Remove stale irq_chip.end
  FRV: Do some cleanups
  FRV: Missing node arg in alloc_thread_info_node() macro
  NOMMU: implement access_remote_vm
  NOMMU: support SMP dynamic percpu_alloc
  NOMMU: percpu should use is_vmalloc_addr().
2011-03-29 11:43:30 -07:00
Linus Torvalds 90f1e7481e Merge branch 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: Use new irq_move functions
  xen: Convert genirq namespace
  xen: fix p2m section mismatches
  xen/p2m: Allocate p2m tracking pages on override
  xen-gntdev: unlock on error path in gntdev_mmap()
  xen-gntdev: return -EFAULT on copy_to_user failure
2011-03-29 11:36:52 -07:00
Linus Torvalds d6ae0c63f0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  watchdog: softdog.c: enhancement to optionally invoke panic instead of reboot on timer expiry
  watchdog: fix nv_tco section mismatch
  watchdog: sp5100_tco.c: Check if firmware has set correct value in tcobase.
  watchdog: Convert release_resource to release_region/release_mem_region
  watchdog: s3c2410_wdt.c: Convert release_resource to release_region/release_mem_region
2011-03-29 11:20:09 -07:00
Linus Torvalds 8c82840e54 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  amd64_edac: Fix potential memleak
2011-03-29 11:11:18 -07:00
Linus Torvalds c86defc82c Merge branch 'irq-final-for-linus-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-final-for-linus-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (111 commits)
  gpio: ab8500: Mark broken
  genirq: Remove move_*irq leftovers
  genirq: Remove compat code
  drivers: Final irq namespace conversion
  mn10300: Use generic show_interrupts()
  mn10300: Cleanup irq_desc access
  mn10300: Convert genirq namespace
  frv: Use generic show_interrupts()
  frv: Convert genirq namespace
  frv: Select GENERIC_HARDIRQS_NO_DEPRECATED
  frv: Convert cpu irq_chip to new functions
  frv: Convert mb93493 irq_chip to new functions
  frv: Convert mb93093 irq_chip to new function
  frv: Convert mb93091 irq_chip to new functions
  frv: Fix typo from __do_IRQ overhaul
  frv: Remove stale irq_chip.end
  m68k: Convert irq function namespace
  xen: Use new irq_move functions
  xen: Cleanup genirq namespace
  unicore32: Use generic show_interrupts()
  ...
2011-03-29 10:46:15 -07:00
Peter Huewe 1309d7afbe char/tpm: Fix unitialized usage of data buffer
This patch fixes information leakage to the userspace by initializing
the data buffer to zero.

Reported-by: Peter Huewe <huewe.external@infineon.com>
Signed-off-by: Peter Huewe <huewe.external@infineon.com>
Signed-off-by: Marcel Selhorst <m.selhorst@sirrix.com>
[ Also removed the silly "* sizeof(u8)".  If that isn't 1, we have way
  deeper problems than a simple multiplication can fix.   - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-29 09:45:34 -07:00
Borislav Petkov a9f0fbe2bb amd64_edac: Fix potential memleak
We check the pointers together but at least one of them could be invalid
due to failed allocation. Since we cannot continue if either of the two
allocations has failed, exit early by freeing them both.

Cc: <stable@kernel.org> # 38.x
Reported-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2011-03-29 18:19:06 +02:00
Dave Chinner 0444d76ae6 fs: don't use igrab() while holding i_lock
Fix the incorrect use of igrab() inside the i_lock in NFS and Ceph‥

If we are already holding the i_lock, we have a reference to the
inode so we can safely use ihold() to gain an extra reference. This
avoids hangs due to lock recursion on the i_lock now that the
inode_lock is gone and igrab() uses the i_lock itself.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Cc: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-29 07:50:34 -07:00