]> git.karo-electronics.de Git - karo-tx-linux.git/log
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12 years agoMerge remote-tracking branch 'ext4/dev'
Stephen Rothwell [Mon, 20 Aug 2012 02:19:07 +0000 (12:19 +1000)]
Merge remote-tracking branch 'ext4/dev'

12 years agoMerge remote-tracking branch 'ext3/for_next'
Stephen Rothwell [Mon, 20 Aug 2012 02:17:38 +0000 (12:17 +1000)]
Merge remote-tracking branch 'ext3/for_next'

12 years agoMerge remote-tracking branch 'cifs/for-next'
Stephen Rothwell [Mon, 20 Aug 2012 02:16:09 +0000 (12:16 +1000)]
Merge remote-tracking branch 'cifs/for-next'

12 years agoMerge remote-tracking branch 'xtensa/for_next'
Stephen Rothwell [Mon, 20 Aug 2012 02:14:44 +0000 (12:14 +1000)]
Merge remote-tracking branch 'xtensa/for_next'

12 years agoMerge remote-tracking branch 'unicore32/unicore32'
Stephen Rothwell [Mon, 20 Aug 2012 02:13:18 +0000 (12:13 +1000)]
Merge remote-tracking branch 'unicore32/unicore32'

12 years agoMerge remote-tracking branch 's390/features'
Stephen Rothwell [Mon, 20 Aug 2012 02:11:53 +0000 (12:11 +1000)]
Merge remote-tracking branch 's390/features'

12 years agoMerge remote-tracking branch 'galak/next'
Stephen Rothwell [Mon, 20 Aug 2012 02:09:27 +0000 (12:09 +1000)]
Merge remote-tracking branch 'galak/next'

12 years agoMerge remote-tracking branch 'mpc5xxx/next'
Stephen Rothwell [Mon, 20 Aug 2012 02:08:01 +0000 (12:08 +1000)]
Merge remote-tracking branch 'mpc5xxx/next'

12 years agoMerge remote-tracking branch 'parisc/for-next'
Stephen Rothwell [Mon, 20 Aug 2012 02:06:36 +0000 (12:06 +1000)]
Merge remote-tracking branch 'parisc/for-next'

12 years agoMerge remote-tracking branch 'mips/mips-for-linux-next'
Stephen Rothwell [Mon, 20 Aug 2012 02:05:13 +0000 (12:05 +1000)]
Merge remote-tracking branch 'mips/mips-for-linux-next'

12 years agoMerge remote-tracking branch 'm68knommu/for-next'
Stephen Rothwell [Mon, 20 Aug 2012 02:03:48 +0000 (12:03 +1000)]
Merge remote-tracking branch 'm68knommu/for-next'

12 years agoMerge remote-tracking branch 'm68k/for-next'
Stephen Rothwell [Mon, 20 Aug 2012 02:02:23 +0000 (12:02 +1000)]
Merge remote-tracking branch 'm68k/for-next'

12 years agoMerge remote-tracking branch 'cris/for-next'
Stephen Rothwell [Mon, 20 Aug 2012 02:00:57 +0000 (12:00 +1000)]
Merge remote-tracking branch 'cris/for-next'

12 years agoMerge remote-tracking branch 'arm-perf/for-next/perf'
Stephen Rothwell [Mon, 20 Aug 2012 01:59:27 +0000 (11:59 +1000)]
Merge remote-tracking branch 'arm-perf/for-next/perf'

12 years agoMerge remote-tracking branch 'arm/for-next'
Stephen Rothwell [Mon, 20 Aug 2012 01:58:02 +0000 (11:58 +1000)]
Merge remote-tracking branch 'arm/for-next'

12 years agoMerge remote-tracking branch 'spi-current/spi/merge'
Stephen Rothwell [Mon, 20 Aug 2012 01:54:30 +0000 (11:54 +1000)]
Merge remote-tracking branch 'spi-current/spi/merge'

12 years agoMerge remote-tracking branch 'devicetree-current/devicetree/merge'
Stephen Rothwell [Mon, 20 Aug 2012 01:54:29 +0000 (11:54 +1000)]
Merge remote-tracking branch 'devicetree-current/devicetree/merge'

12 years agoMerge remote-tracking branch 'crypto-current/master'
Stephen Rothwell [Mon, 20 Aug 2012 01:54:21 +0000 (11:54 +1000)]
Merge remote-tracking branch 'crypto-current/master'

12 years agoMerge remote-tracking branch 'usb.current/usb-linus'
Stephen Rothwell [Mon, 20 Aug 2012 01:54:17 +0000 (11:54 +1000)]
Merge remote-tracking branch 'usb.current/usb-linus'

12 years agoMerge remote-tracking branch 'driver-core.current/driver-core-linus'
Stephen Rothwell [Mon, 20 Aug 2012 01:54:16 +0000 (11:54 +1000)]
Merge remote-tracking branch 'driver-core.current/driver-core-linus'

12 years agoMerge remote-tracking branch 'pci-current/for-linus'
Stephen Rothwell [Mon, 20 Aug 2012 01:54:15 +0000 (11:54 +1000)]
Merge remote-tracking branch 'pci-current/for-linus'

12 years agoMerge remote-tracking branch 'sound-current/for-linus'
Stephen Rothwell [Mon, 20 Aug 2012 01:54:13 +0000 (11:54 +1000)]
Merge remote-tracking branch 'sound-current/for-linus'

12 years agoMerge remote-tracking branch 'net/master'
Stephen Rothwell [Mon, 20 Aug 2012 01:54:12 +0000 (11:54 +1000)]
Merge remote-tracking branch 'net/master'

12 years agoext4: remove duplicated declarations in inode.c
Zheng Liu [Sun, 19 Aug 2012 22:07:40 +0000 (18:07 -0400)]
ext4: remove duplicated declarations in inode.c

In patch cb20d5188366f04d96d2e07b1240cc92170ade40, ext4_set_bh_endio
and ext4_end_io_buffer_write are declared at the beginning of inode.c,
and again later on in the middle of the file.  Remove the second set
of duplicated function declarations.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agodyndbg: fix for SOH in logging messages
Markus Trippelsdorf [Sun, 19 Aug 2012 00:35:51 +0000 (18:35 -0600)]
dyndbg: fix for SOH in logging messages

commit af7f2158fde was done against master, and clashed with structured
logging's change of KERN_LEVEL to SOH.

Bisected and fixed by Markus Trippelsdorf.

Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Baron <jbaron@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoext4: fix trivial typo in comment
Wang Sheng-Hui [Sun, 19 Aug 2012 02:38:07 +0000 (22:38 -0400)]
ext4: fix trivial typo in comment

Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: no need to add inode to orphan list during hole punch
Ashish Sangwan [Sun, 19 Aug 2012 02:29:46 +0000 (22:29 -0400)]
ext4: no need to add inode to orphan list during hole punch

While performing punch hole for an inode, i_disksize is not changed.
So, there is no need to add the inode to orphan list.

Signed-off-by: Ashish Sangwan <ashish.sangwan2@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agojbd2: don't write superblock when if its empty
Eric Sandeen [Sun, 19 Aug 2012 02:29:40 +0000 (22:29 -0400)]
jbd2: don't write superblock when if its empty

This sequence:

# truncate --size=1g fsfile
# mkfs.ext4 -F fsfile
# mount -o loop,ro fsfile /mnt
# umount /mnt
# dmesg | tail

results in an IO error when unmounting the RO filesystem:

[  318.020828] Buffer I/O error on device loop1, logical block 196608
[  318.027024] lost page write due to I/O error on loop1
[  318.032088] JBD2: Error -5 detected when updating journal superblock for loop1-8.

This was a regression introduced by commit 24bcc89c7e7c: "jbd2: split
updating of journal superblock and marking journal empty".

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
12 years agoext4: replace plain integer with NULL in super.c
Sachin Kamat [Sun, 19 Aug 2012 02:29:18 +0000 (22:29 -0400)]
ext4: replace plain integer with NULL in super.c

Fixes the following sparse warning:
fs/ext4/super.c:1672:45: warning: Using plain integer as NULL pointer

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Sat, 18 Aug 2012 23:20:05 +0000 (16:20 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "The largest thing in this set of changes is bringing back some of the
  ARMv3 code to fix a compile problem noticed on RiscPC, which we still
  support, even though we only support ARMv4 there.

  (The reason is that the system bus doesn't support ARMv4 half-word
  accesses, so we need the ARMv3 library code for this platform.)

  The rest are all quite minor fixes."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7490/1: Drop duplicate select for GENERIC_IRQ_PROBE
  ARM: Bring back ARMv3 IO and user access code
  ARM: 7489/1: errata: fix workaround for erratum #720789 on UP systems
  ARM: 7488/1: mm: use 5 bits for swapfile type encoding
  ARM: 7487/1: mm: avoid setting nG bit for user mappings that aren't present
  ARM: 7486/1: sched_clock: update epoch_cyc on resume
  ARM: 7484/1: Don't enable GENERIC_LOCKBREAK with ticket spinlocks
  ARM: 7483/1: vfp: only advertise VFPv4 in hwcaps if CONFIG_VFPv3 is enabled
  ARM: 7482/1: topology: fix section mismatch warning for init_cpu_topology

12 years agoMerge tag 'pm-for-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sat, 18 Aug 2012 21:39:19 +0000 (14:39 -0700)]
Merge tag 'pm-for-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael J. Wysocki:
  - Fixes for three obscure problems in the runtime PM core code found
   recently.
 - Two fixes for the new "coupled" cpuidle code from Colin Cross and Jon
   Medhurst.
 - intel_idle driver fix from Konrad Rzeszutek Wilk.

* tag 'pm-for-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  intel_idle: Check cpu_idle_get_driver() for NULL before dereferencing it.
  cpuidle: Prevent null pointer dereference in cpuidle_coupled_cpu_notify
  cpuidle: coupled: fix sleeping while atomic in cpu notifier
  PM / Runtime: Check device PM QoS setting before "no callbacks" check
  PM / Runtime: Clear power.deferred_resume on success in rpm_suspend()
  PM / Runtime: Fix rpm_resume() return value for power.no_callbacks set

12 years agoMerge branch 'vfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Linus Torvalds [Sat, 18 Aug 2012 17:02:17 +0000 (10:02 -0700)]
Merge branch 'vfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs

Pull vfs fixes from Miklos Szeredi.

This mainly fixes some confusion about whether the open 'mode' variable
passed around should contain the full file type (S_IFREG etc)
information or just the permission mode.  In particular, the lack of
proper file type information had confused fuse.

* 'vfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  vfs: fix propagation of atomic_open create error on negative dentry
  fuse: check create mode in atomic open
  vfs: pass right create mode to may_o_create()
  vfs: atomic_open(): fix create mode usage
  vfs: canonicalize create mode in build_open_flags()

12 years agom68k: Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR
Thomas Meyer [Mon, 6 Aug 2012 17:51:16 +0000 (19:51 +0200)]
m68k: Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR

The semantic patch that makes this change is available
in scripts/coccinelle/api/ptr_ret.cocci.

More information about semantic patching is available at
http://coccinelle.lip6.fr/

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
12 years agom68k/q40: Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR
Thomas Meyer [Mon, 6 Aug 2012 17:51:16 +0000 (19:51 +0200)]
m68k/q40: Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR

The semantic patch that makes this change is available
in scripts/coccinelle/api/ptr_ret.cocci.

More information about semantic patching is available at
http://coccinelle.lip6.fr/

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
12 years agom68k/amiga: Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR
Thomas Meyer [Mon, 6 Aug 2012 17:51:16 +0000 (19:51 +0200)]
m68k/amiga: Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR

The semantic patch that makes this change is available
in scripts/coccinelle/api/ptr_ret.cocci.

More information about semantic patching is available at
http://coccinelle.lip6.fr/

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
12 years agom68k/apollo: Remove disabled definitions in apollohw.h
Geert Uytterhoeven [Fri, 20 Jul 2012 19:44:27 +0000 (21:44 +0200)]
m68k/apollo: Remove disabled definitions in apollohw.h

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
12 years agoUSB: CDC ACM: Fix NULL pointer dereference
Sven Schnelle [Fri, 17 Aug 2012 19:43:43 +0000 (21:43 +0200)]
USB: CDC ACM: Fix NULL pointer dereference

If a device specifies zero endpoints in its interface descriptor,
the kernel oopses in acm_probe(). Even though that's clearly an
invalid descriptor, we should test wether we have all endpoints.
This is especially bad as this oops can be triggered by just
plugging a USB device in.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: emi62: remove __devinit* from the struct usb_device_id table
Greg Kroah-Hartman [Sat, 18 Aug 2012 00:48:41 +0000 (17:48 -0700)]
USB: emi62: remove __devinit* from the struct usb_device_id table

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
CC: Paul Gortmaker <paul.gortmaker@windriver.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: winbond: remove __devinit* from the struct usb_device_id table
Greg Kroah-Hartman [Sat, 18 Aug 2012 00:48:37 +0000 (17:48 -0700)]
USB: winbond: remove __devinit* from the struct usb_device_id table

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
CC: Pavel Machek <pavel@ucw.cz>
CC: Paul Gortmaker <paul.gortmaker@windriver.com>
CC: "John W. Linville" <linville@tuxdriver.com>
CC: Eliad Peller <eliad@wizery.com>
CC: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: vt6656: remove __devinit* from the struct usb_device_id table
Greg Kroah-Hartman [Sat, 18 Aug 2012 00:48:33 +0000 (17:48 -0700)]
USB: vt6656: remove __devinit* from the struct usb_device_id table

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
CC: Forest Bond <forest@alittletooquiet.net>
CC: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Jesper Juhl <jj@chaosbits.net>
CC: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: rtl8187: remove __devinit* from the struct usb_device_id table
Greg Kroah-Hartman [Sat, 18 Aug 2012 00:48:29 +0000 (17:48 -0700)]
USB: rtl8187: remove __devinit* from the struct usb_device_id table

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
CC: Herton Ronaldo Krzesinski <herton@canonical.com>
CC: Hin-Tak Leung <htl10@users.sourceforge.net>
CC: Larry Finger <Larry.Finger@lwfinger.net>
CC: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: p54usb: remove __devinit* from the struct usb_device_id table
Greg Kroah-Hartman [Sat, 18 Aug 2012 00:48:28 +0000 (17:48 -0700)]
USB: p54usb: remove __devinit* from the struct usb_device_id table

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
CC: Christian Lamparter <chunkeey@googlemail.com>
CC: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: spca506: remove __devinit* from the struct usb_device_id table
Greg Kroah-Hartman [Sat, 18 Aug 2012 00:48:27 +0000 (17:48 -0700)]
USB: spca506: remove __devinit* from the struct usb_device_id table

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
CC: Hans de Goede <hdegoede@redhat.com>
CC: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: jl2005bcd: remove __devinit* from the struct usb_device_id table
Greg Kroah-Hartman [Sat, 18 Aug 2012 00:48:27 +0000 (17:48 -0700)]
USB: jl2005bcd: remove __devinit* from the struct usb_device_id table

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
CC: Hans de Goede <hdegoede@redhat.com>
CC: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: smsusb: remove __devinit* from the struct usb_device_id table
Greg Kroah-Hartman [Sat, 18 Aug 2012 00:48:26 +0000 (17:48 -0700)]
USB: smsusb: remove __devinit* from the struct usb_device_id table

This structure needs to always stick around, even if CONFIG_HOTPLUG
is disabled, otherwise we can oops when trying to probe a device that
was added after the structure is thrown away.

Thanks to Fengguang Wu and Bjørn Mork for tracking this issue down.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
CC: Mauro Carvalho Chehab <mchehab@infradead.org>
CC: Michael Krufky <mkrufky@linuxtv.org>
CC: Paul Gortmaker <paul.gortmaker@windriver.com>
CC: Doron Cohen <doronc@siano-ms.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoMerge tag 'md-3.6-fixes' of git://neil.brown.name/md
Linus Torvalds [Sat, 18 Aug 2012 00:47:32 +0000 (17:47 -0700)]
Merge tag 'md-3.6-fixes' of git://neil.brown.name/md

Pull md fixes from NeilBrown:
 "2 fixes for md, tagged for -stable"

* tag 'md-3.6-fixes' of git://neil.brown.name/md:
  md/raid10: fix problem with on-stack allocation of r10bio structure.
  md: Don't truncate size at 4TB for RAID0 and Linear

12 years agomd/raid10: fix problem with on-stack allocation of r10bio structure.
NeilBrown [Fri, 17 Aug 2012 23:51:42 +0000 (09:51 +1000)]
md/raid10: fix problem with on-stack allocation of r10bio structure.

A 'struct r10bio' has an array of per-copy information at the end.
This array is declared with size [0] and r10bio_pool_alloc allocates
enough extra space to store the per-copy information depending on the
number of copies needed.

So declaring a 'struct r10bio on the stack isn't going to work.  It
won't allocate enough space, and memory corruption will ensue.

So in the two places where this is done, declare a sufficiently large
structure and use that instead.

The two call-sites of this bug were introduced in 3.4 and 3.5
so this is suitable for both those kernels.  The patch will have to
be modified for 3.4 as it only has one bug.

Cc: stable@vger.kernel.org
Reported-by: Ivan Vasilyev <ivan.vasilyev@gmail.com>
Tested-by: Ivan Vasilyev <ivan.vasilyev@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agoext4: drop lock_super()/unlock_super()
Theodore Ts'o [Fri, 17 Aug 2012 23:08:42 +0000 (19:08 -0400)]
ext4: drop lock_super()/unlock_super()

We don't need lock_super()/unlock_super() any more, since the places
where it is used, we are protected by the s_umount r/w semaphore.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Marco Stornelli <marco.stornelli@gmail.com>
12 years agoMerge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Fri, 17 Aug 2012 18:45:58 +0000 (11:45 -0700)]
Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband/rdma fixes from Roland Dreier:
 "Grab bag of InfiniBand/RDMA fixes:
   - IPoIB fixes for regressions introduced by path database conversion
   - mlx4 fixes for bugs with large memory systems and regressions from
     SR-IOV patches
   - RDMA CM fix for passing bad event up to userspace
   - Other minor fixes"

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mlx4: Check iboe netdev pointer before dereferencing it
  mlx4_core: Clean up buddy bitmap allocation
  mlx4_core: Fix integer overflow issues around MTT table
  mlx4_core: Allow large mlx4_buddy bitmaps
  IB/srp: Fix a race condition
  IB/qib: Fix error return code in qib_init_7322_variables()
  IB: Fix typos in infiniband drivers
  IB/ipoib: Fix RCU pointer dereference of wrong object
  IB/ipoib: Add missing locking when CM object is deleted
  RDMA/ucma.c: Fix for events with wrong context on iWARP
  RDMA/ocrdma: Don't call vlan_dev_real_dev() for non-VLAN netdevs
  IB/mlx4: Fix possible deadlock on sm_lock spinlock

12 years agoMerge tag 'tty-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Fri, 17 Aug 2012 18:12:28 +0000 (11:12 -0700)]
Merge tag 'tty-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull TTY fixes from Greg Kroah-Hartman:
 "Here are 4 tiny patches, each fixing a serial driver problem that
  people have reported.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'tty-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  pmac_zilog,kdb: Fix console poll hook to return instead of loop
  serial: mxs-auart: fix the wrong RTS hardware flow control
  serial: ifx6x60: fix paging fault on spi_register_driver
  serial: Change Kconfig entry for CLPS711X-target

12 years agointel_idle: Check cpu_idle_get_driver() for NULL before dereferencing it.
Konrad Rzeszutek Wilk [Thu, 16 Aug 2012 20:06:55 +0000 (22:06 +0200)]
intel_idle: Check cpu_idle_get_driver() for NULL before dereferencing it.

If the machine is booted without any cpu_idle driver set
(b/c disable_cpuidle() has been called) we should follow
other users of cpu_idle API and check the return value
for NULL before using it.

Reported-and-tested-by: Mark van Dijk <mark@internecto.net>
Suggested-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agocpuidle: Prevent null pointer dereference in cpuidle_coupled_cpu_notify
Jon Medhurst (Tixy) [Wed, 15 Aug 2012 20:11:00 +0000 (22:11 +0200)]
cpuidle: Prevent null pointer dereference in cpuidle_coupled_cpu_notify

When a kernel is built to support multiple hardware types it's possible
that CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is set but the hardware the
kernel is run on doesn't support cpuidle and therefore doesn't load a
driver for it. In this case, when the system is shut down,
cpuidle_coupled_cpu_notify() gets called with cpuidle_devices set to
NULL. There are quite possibly other circumstances where this
situation can also occur and we should check for it.

Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agocpuidle: coupled: fix sleeping while atomic in cpu notifier
Colin Cross [Wed, 15 Aug 2012 20:10:50 +0000 (22:10 +0200)]
cpuidle: coupled: fix sleeping while atomic in cpu notifier

The cpu hotplug notifier gets called in both atomic and non-atomic
contexts, it is not always safe to lock a mutex.  Filter out all events
except the six necessary ones, which are all sleepable, before taking
the mutex.

Signed-off-by: Colin Cross <ccross@android.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoPM / Runtime: Check device PM QoS setting before "no callbacks" check
Rafael J. Wysocki [Wed, 15 Aug 2012 19:32:04 +0000 (21:32 +0200)]
PM / Runtime: Check device PM QoS setting before "no callbacks" check

If __dev_pm_qos_read_value(dev) returns a negative value,
rpm_suspend() should return -EPERM for dev even if its
power.no_callbacks flag is set.  For this to happen, the device's
power.no_callbacks flag has to be checked after the PM QoS check,
so move the PM QoS check to rpm_check_suspend_allowed() (this will
make it cover idle notifications as well as runtime suspend too).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable@vger.kernel.org
12 years agoPM / Runtime: Clear power.deferred_resume on success in rpm_suspend()
Rafael J. Wysocki [Wed, 15 Aug 2012 19:31:55 +0000 (21:31 +0200)]
PM / Runtime: Clear power.deferred_resume on success in rpm_suspend()

The power.deferred_resume can only be set if the runtime PM status
of device is RPM_SUSPENDING and it should be cleared after its
status has been changed, regardless of whether or not the runtime
suspend has been successful.  However, it only is cleared on
suspend failure, while it may remain set on successful suspend and
is happily leaked to rpm_resume() executed in that case.

That shouldn't happen, so if power.deferred_resume is set in
rpm_suspend() after the status has been changed to RPM_SUSPENDED,
clear it before calling rpm_resume().  Then, it doesn't need to be
cleared before changing the status to RPM_SUSPENDING any more,
because it's always cleared after the status has been changed to
either RPM_SUSPENDED (on success) or RPM_ACTIVE (on failure).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable@vger.kernel.org
12 years agoPM / Runtime: Fix rpm_resume() return value for power.no_callbacks set
Rafael J. Wysocki [Wed, 15 Aug 2012 19:31:45 +0000 (21:31 +0200)]
PM / Runtime: Fix rpm_resume() return value for power.no_callbacks set

For devices whose power.no_callbacks flag is set, rpm_resume()
should return 1 if the device's parent is already active, so that
the callers of pm_runtime_get() don't think that they have to wait
for the device to resume (asynchronously) in that case (the core
won't queue up an asynchronous resume in that case, so there's
nothing to wait for anyway).

Modify the code accordingly (and make sure that an idle notification
will be queued up on success, even if 1 is to be returned).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable@vger.kernel.org
12 years agoMerge tag 'staging-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 17 Aug 2012 17:17:03 +0000 (10:17 -0700)]
Merge tag 'staging-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging fixes from Greg Kroah-Hartman:
 "Here are some staging driver fixes (and iio driver fixes, they get
  lumped in with the staging stuff due to dependancies) for your 3.6-rc3
  tree.

  Nothing major, just a bunch of fixes that people have reported.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'staging-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (26 commits)
  iio: lm3533-als: Fix build warnings
  staging:iio:ad7780: Mark channels as unsigned
  staging:iio:ad7192: Report offset and scale for temperature channel
  staging:iio:ad7192: Report channel offset
  staging:iio:ad7192: Mark channels as unsigned
  staging:iio:ad7192: Fix setting ACX
  staging:iio:ad7192: Add missing break in switch statement
  staging:iio:ad7793: Fix internal reference value
  staging:iio:ad7793: Follow new IIO naming spec
  staging:iio:ad7793: Fix temperature scale and offset
  staging:iio:ad7793: Report channel offset
  staging:iio:ad7793: Mark channels as unsigned
  staging:iio:ad7793: Add missing break in switch statement
  iio/adjd_s311: Fix potential memory leak in adjd_s311_update_scan_mode()
  iio: frequency: ADF4350: Fix potential reference div factor overflow.
  iio: staging: ad7298_ring: Fix maybe-uninitialized warning
  staging: comedi: usbduxfast: Declare MODULE_FIRMWARE usage
  staging: comedi: usbdux: Declare MODULE_FIRMWARE usage
  staging: comedi: usbduxsigma: Declare MODULE_FIRMWARE usage
  staging: csr: add INET dependancy
  ...

12 years agoMerge tag 'driver-core-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 17 Aug 2012 17:16:30 +0000 (10:16 -0700)]
Merge tag 'driver-core-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg Kroah-Hartman:
 "Here are two tiny patches, one fixing a dynamic debug problem that the
  printk rework turned up, and the other one fixing an extcon problem
  that people reported.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'driver-core-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  extcon: extcon_gpio: Replace gpio_request_one by devm_gpio_request_one
  drivers-core: make structured logging play nice with dynamic-debug

12 years agoMerge tag 'char-misc-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 17 Aug 2012 17:15:57 +0000 (10:15 -0700)]
Merge tag 'char-misc-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull Char / Misc driver fixes from Greg Kroah-Hartman:
 "Here are some small misc and w1 driver fixes for 3.6-rc3.  Nothing
  major, just some some bugfixes and a new device id for a w1 driver.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'char-misc-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  1-Wire: Add support for the maxim ds1825 temperature sensor
  ti-st: Fix check for pdata->chip_awake function pointer
  mei: add mei_quirk_probe function
  mei: fix device stall after wd is stopped

12 years agoMerge tag 'usb-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Fri, 17 Aug 2012 17:14:53 +0000 (10:14 -0700)]
Merge tag 'usb-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB patches from Greg Kroah-Hartman:
 "Here are a number of small USB patches for 3.6-rc3.

  The "large" one is just a number of device id updates to the option
  driver, done by the manufacturer, properly fixing up the device ids
  based on shipping devices.

  Other than that, some gadget driver fixes, the obligitary XHCI
  patches, and some other device ids and bugs fixed.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'usb-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
  USB: qcserial: fix port handling on Gobi 1K and 2K+
  USB: serial: Fix mos7840 timeout
  USB: option: add ZTE K5006-Z
  usb: gadget: u_ether: fix kworker 100% CPU issue with still used interfaces in eth_stop
  usb: host: tegra: fix warning messages in ehci_remove
  usb: host: mips: sead3: Update for EHCI register structure.
  usb: renesas_usbhs: fixup resume method for autonomy mode
  usb: renesas_usbhs: mod_host: add missing .bus_suspend/resume
  update MAINTAINERS for Oliver Neukum
  usb: usb_wwan: resume/suspend can be called after port is gone
  usb: serial: prevent suspend/resume from racing against probe/remove
  usb: usb_wwan: replace release and disconnect with a port_remove hook
  usb: serial: mos7840: Fixup mos7840_chars_in_buffer()
  USB: isp1362-hcd.c: usb message always saved in case of underrun
  OMAP: USB : Fix the EHCI enumeration and core retention issue
  usb: chipidea: fix and improve dependencies if usb host or gadget support is built as module
  USB: support the new interfaces of Huawei Data Card devices in option driver
  USB: ftdi_sio: Add VID/PID for Kondo Serial USB
  xhci: Switch PPT ports to EHCI on shutdown.
  xhci: Fix bug after deq ptr set to link TRB.
  ...

12 years agoscripts/kernel-doc: fix fatal script error
Randy Dunlap [Thu, 16 Aug 2012 23:23:20 +0000 (16:23 -0700)]
scripts/kernel-doc: fix fatal script error

Fix fatal error in scripts/kernel-doc by ignoring the "__weak" attribute:

  Error(drivers/pci/pci.c:2820): cannot understand prototype: 'char * __weak pcibios_setup(char *str) '

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Fri, 17 Aug 2012 16:17:11 +0000 (09:17 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull a Yama bugfix from James Morris.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  Yama: access task_struct->comm directly

12 years agoMerge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming
Linus Torvalds [Fri, 17 Aug 2012 15:10:12 +0000 (08:10 -0700)]
Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

Pull C6X atomic64 support from Mark Salter:
 "Enable atomic64 ops in C6X
   - define L1_CACHE_SHIFT
   - select GENERIC_ATOMIC64"

* tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
  C6X: select GENERIC_ATOMIC64
  C6X: add Lx_CACHE_SHIFT defines

12 years agoMerge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 17 Aug 2012 15:04:47 +0000 (08:04 -0700)]
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 bug fixes from Ted Ts'o:
 "The following are all bug fixes and regressions.  The most notable are
  the ones which cause problems for ext4 on RAID --- a performance
  problem when mounting very large filesystems, and a kernel OOPS when
  doing an rm -rf on large directory hierarchies on fast devices."

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix kernel BUG on large-scale rm -rf commands
  ext4: fix long mount times on very big file systems
  ext4: don't call ext4_error while block group is locked
  ext4: avoid kmemcheck complaint from reading uninitialized memory
  ext4: make sure the journal sb is written in ext4_clear_journal_err()

12 years agopowerpc/mpc85xx: Add new ext fields to Integrated FLash Controller
Prabhakar Kushwaha [Thu, 16 Aug 2012 03:58:22 +0000 (09:28 +0530)]
powerpc/mpc85xx: Add new ext fields to Integrated FLash Controller

Freescale's Integrated Flash controller(IFC) v1.1.0 supports 40 bit
address bus width.
In case more than 32 bit address is used, the EXT registers should be set.

Add support of ext registers.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc: Update Integrated Flash controller device tree bindings
Prabhakar Kushwaha [Wed, 15 Aug 2012 15:13:52 +0000 (20:43 +0530)]
powerpc: Update Integrated Flash controller device tree bindings

Freescale's Integrated Flash controller (IFC) may have one or two
interrupts. In case of single interrupt line, it will cover all IFC
interrupts.

Update this information in IFC device tree bindings

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agoext4: return an error if kset_create_and_add fails in ext4_init_fs()
Theodore Ts'o [Fri, 17 Aug 2012 14:04:17 +0000 (10:04 -0400)]
ext4: return an error if kset_create_and_add fails in ext4_init_fs()

In the very unlikely case that kset_create_and_add() fails when the
ext4.ko module is being loaded (or during kernel startup) set err so
that it's clear that the module load failed.

https://bugzilla.kernel.org/show_bug.cgi?id=27912

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: remove unused function argument 'order' in mb_find_extent()
Robin Dong [Fri, 17 Aug 2012 14:02:17 +0000 (10:02 -0400)]
ext4: remove unused function argument 'order' in mb_find_extent()

All the routines call mb_find_extent are setting argument 'order' to 0
just like:

mb_find_extent(e4b, 0, ex.fe_start, ex.fe_len, &ex);

therefore the useless argument should be removed.

Signed-off-by: Robin Dong <sanbai@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: remove unused macro MB_DEFAULT_MAX_GROUPS_TO_SCAN
Robin Dong [Fri, 17 Aug 2012 14:00:17 +0000 (10:00 -0400)]
ext4: remove unused macro MB_DEFAULT_MAX_GROUPS_TO_SCAN

Signed-off-by: Robin Dong <sanbai@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: check return value of blkdev_issue_flush()
Theodore Ts'o [Fri, 17 Aug 2012 13:58:17 +0000 (09:58 -0400)]
ext4: check return value of blkdev_issue_flush()

blkdev_issue_flush() can fail; make sure the error gets properly
propagated.

This is a port of the equivalent ext3 patch from commit 44f4f729e7a1.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoautofs4 - fix expire check
Ian Kent [Fri, 17 Aug 2012 03:09:04 +0000 (11:09 +0800)]
autofs4 - fix expire check

In some cases when an autofs indirect mount is contained in a file
system that is marked as shared (such as when systemd does the
equivalent of "mount --make-rshared /" early in the boot), mounts
stop expiring.

When this happens the first expiry check on a mountpoint dentry in
autofs_expire_indirect() sees a mountpoint dentry with a higher
than minimal reference count. Consequently the dentry is condidered
busy and the actual expiry check is never done.

This particular check was originally meant as an optimisation to
detect a path walk in progress but with the addition of rcu-walk
it can be ineffective anyway.

Removing the test allows automounts to expire again since the
actual expire check doesn't rely on the dentry reference count.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agojbd2: check return value of blkdev_issue_flush()
Theodore Ts'o [Fri, 17 Aug 2012 13:56:17 +0000 (09:56 -0400)]
jbd2: check return value of blkdev_issue_flush()

blkdev_issue_flush() can fail; make sure the error gets properly
propagated.

This is a port of the equivalent jbd patch from commit 349ecd6a3c0e.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: make the zero-out chunk size tunable
Zheng Liu [Fri, 17 Aug 2012 13:54:17 +0000 (09:54 -0400)]
ext4: make the zero-out chunk size tunable

Currently in ext4 the length of zero-out chunk is set to 7 file system
blocks.  But if an inode has uninitailized extents from using
fallocate to preallocate space, and the workload issues many random
writes, this can cause a fragmented extent tree that will
unnecessarily grow the extent tree.

So create a new sysfs tunable, extent_max_zeroout_kb, which controls
the maximum size where blocks will be zeroed out instead of creating a
new uninitialized extent.  The default of this has been sent to 32kb.

CC: Zach Brown <zab@zabbo.net>
CC: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: add missing space to trace message
Anatol Pomozov [Fri, 17 Aug 2012 13:52:17 +0000 (09:52 -0400)]
ext4: add missing space to trace message

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: realign trace events structs to make it smaller
Anatol Pomozov [Fri, 17 Aug 2012 13:50:17 +0000 (09:50 -0400)]
ext4: realign trace events structs to make it smaller

Most hardware architectures require that data (including struct fields)
have to be aligned in memory. To make it happen compiler inserts padding
between struct fields if they are not aligned correctly.

Reorder fields to remove paddings and make structures denser. Making data
smaller saves some memory that is very important for trace events.
Tracing buffer has limited size and making objects smaller we can put more
of them without overflowing the tracing buffer.

To find data struct holes I used 'pahole -H 1 -E -I vmlinux.o' from
'dwarves' package.

Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: add max_dir_size_kb mount option
Theodore Ts'o [Fri, 17 Aug 2012 13:48:17 +0000 (09:48 -0400)]
ext4: add max_dir_size_kb mount option

Very large directories can cause significant performance problems, or
perhaps even invoke the OOM killer, if the process is running in a
highly constrained memory environment (whether it is VM's with a small
amount of memory or in a small memory cgroup).

So it is useful, in cloud server/data center environments, to be able
to set a filesystem-wide cap on the maximum size of a directory, to
ensure that directories never get larger than a sane size.  We do this
via a new mount option, max_dir_size_kb.  If there is an attempt to
grow the directory larger than max_dir_size_kb, the system call will
return ENOSPC instead.

Google-Bug-Id: 6863013

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: don't load the block bitmap for block groups which have no space
Theodore Ts'o [Fri, 17 Aug 2012 13:46:17 +0000 (09:46 -0400)]
ext4: don't load the block bitmap for block groups which have no space

Add a short circuit check to ext4_mb_group_group() so that we don't
bother to load the block bitmap for a block group which does not have
any space available.  (Or which does not have enough space until we
are in desperation mode, i.e., when cr == 3.)

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=45741
Reported-by: mirek@me.com
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: collapse a single extent tree block into the inode if possible
Theodore Ts'o [Fri, 17 Aug 2012 13:44:17 +0000 (09:44 -0400)]
ext4: collapse a single extent tree block into the inode if possible

If an inode has more than 4 extents, but then later some of the
extents are merged together, we can optimize the file system by moving
the extents up into the inode, and discarding the extent tree block.
This is important, because if there are a large number of inodes with
an external extent tree blocks where the contents could fit in the
inode, this can significantly increase the fsck time of the file
system.

Google-Bug-Id: 6801242

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
12 years agoext4: fix kernel BUG on large-scale rm -rf commands
Theodore Ts'o [Fri, 17 Aug 2012 12:54:52 +0000 (08:54 -0400)]
ext4: fix kernel BUG on large-scale rm -rf commands

Commit 968dee7722: "ext4: fix hole punch failure when depth is greater
than 0" introduced a regression in v3.5.1/v3.6-rc1 which caused kernel
crashes when users ran run "rm -rf" on large directory hierarchy on
ext4 filesystems on RAID devices:

    BUG: unable to handle kernel NULL pointer dereference at 0000000000000028

    Process rm (pid: 18229, threadinfo ffff8801276bc000, task ffff880123631710)
    Call Trace:
     [<ffffffff81236483>] ? __ext4_handle_dirty_metadata+0x83/0x110
     [<ffffffff812353d3>] ext4_ext_truncate+0x193/0x1d0
     [<ffffffff8120a8cf>] ? ext4_mark_inode_dirty+0x7f/0x1f0
     [<ffffffff81207e05>] ext4_truncate+0xf5/0x100
     [<ffffffff8120cd51>] ext4_evict_inode+0x461/0x490
     [<ffffffff811a1312>] evict+0xa2/0x1a0
     [<ffffffff811a1513>] iput+0x103/0x1f0
     [<ffffffff81196d84>] do_unlinkat+0x154/0x1c0
     [<ffffffff8118cc3a>] ? sys_newfstatat+0x2a/0x40
     [<ffffffff81197b0b>] sys_unlinkat+0x1b/0x50
     [<ffffffff816135e9>] system_call_fastpath+0x16/0x1b
    Code: 8b 4d 20 0f b7 41 02 48 8d 04 40 48 8d 04 81 49 89 45 18 0f b7 49 02 48 83 c1 01 49 89 4d 00 e9 ae f8 ff ff 0f 1f 00 49 8b 45 28 <48> 8b 40 28 49 89 45 20 e9 85 f8 ff ff 0f 1f 80 00 00 00

    RIP  [<ffffffff81233164>] ext4_ext_remove_space+0xa34/0xdf0

This could be reproduced as follows:

The problem in commit 968dee7722 was that caused the variable 'i' to
be left uninitialized if the truncate required more space than was
available in the journal.  This resulted in the function
ext4_ext_truncate_extend_restart() returning -EAGAIN, which caused
ext4_ext_remove_space() to restart the truncate operation after
starting a new jbd2 handle.

Reported-by: Maciej Żenczykowski <maze@google.com>
Reported-by: Marti Raudsepp <marti@juffo.org>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
12 years agoext4: fix long mount times on very big file systems
Theodore Ts'o [Thu, 16 Aug 2012 15:59:04 +0000 (11:59 -0400)]
ext4: fix long mount times on very big file systems

Commit 8aeb00ff85a: "ext4: fix overhead calculation used by
ext4_statfs()" introduced a O(n**2) calculation which makes very large
file systems take forever to mount.  Fix this with an optimization for
non-bigalloc file systems.  (For bigalloc file systems the overhead
needs to be set in the the superblock.)

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
12 years agoext4: don't call ext4_error while block group is locked
Theodore Ts'o [Fri, 10 Aug 2012 17:57:52 +0000 (13:57 -0400)]
ext4: don't call ext4_error while block group is locked

While in ext4_validate_block_bitmap(), if an block allocation bitmap
is found to be invalid, we call ext4_error() while the block group is
still locked.  This causes ext4_commit_super() to call a function
which might sleep while in an atomic context.

There's no need to keep the block group locked at this point, so hoist
the ext4_error() call up to ext4_validate_block_bitmap() and release
the block group spinlock before calling ext4_error().

The reported stack trace can be found at:

http://article.gmane.org/gmane.comp.file-systems.ext4/33731

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
12 years agoYama: access task_struct->comm directly
Kees Cook [Wed, 15 Aug 2012 18:41:55 +0000 (11:41 -0700)]
Yama: access task_struct->comm directly

The core ptrace access checking routine holds a task lock, and when
reporting a failure, Yama takes a separate task lock. To avoid a
potential deadlock with two ptracers taking the opposite locks, do not
use get_task_comm() and just use ->comm directly since accuracy is not
important for the report.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Suggested-by: Oleg Nesterov <oleg@redhat.com>
CC: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
12 years agoMerge branches 'next/ath79', 'next/for-linus', 'next/generic', 'next/lantiq' and...
Ralf Baechle [Fri, 17 Aug 2012 09:03:46 +0000 (11:03 +0200)]
Merge branches 'next/ath79', 'next/for-linus', 'next/generic', 'next/lantiq' and 'next/trace' into mips-for-linux-next

12 years agoMIPS: Implement remaining <asm/syscall.h> APIs.
Ralf Baechle [Fri, 17 Aug 2012 08:23:30 +0000 (10:23 +0200)]
MIPS: Implement remaining <asm/syscall.h> APIs.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: Add support for syscall tracepoints.
Ralf Baechle [Fri, 17 Aug 2012 08:22:36 +0000 (10:22 +0200)]
MIPS: Add support for syscall tracepoints.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: Add support for SECCOMP_FILTER.
Ralf Baechle [Fri, 17 Aug 2012 08:22:35 +0000 (10:22 +0200)]
MIPS: Add support for SECCOMP_FILTER.

Enable tasks to build secure computing environments defined in terms
of Berkeley Packet Filter programs which implement task-defined system
call filtering polices.

See Documentation/prctl/seccomp_filter.txt for details.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: ptrace: Switch syscall reporting to tracehook_report_syscall_entry().
Ralf Baechle [Fri, 17 Aug 2012 08:22:35 +0000 (10:22 +0200)]
MIPS: ptrace: Switch syscall reporting to tracehook_report_syscall_entry().

Set ret just so __must_check is satisfied but don't use the variable for
anything yet.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: Move audit_arch() helper function to __syscall_get_arch().
Ralf Baechle [Fri, 17 Aug 2012 08:22:35 +0000 (10:22 +0200)]
MIPS: Move audit_arch() helper function to __syscall_get_arch().

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: Enable HAVE_ARCH_TRACEHOOK.
Ralf Baechle [Fri, 17 Aug 2012 08:22:04 +0000 (10:22 +0200)]
MIPS: Enable HAVE_ARCH_TRACEHOOK.

This enables /proc/<pid>/syscall and the ptrace PTRACE_GETREGSET and
PTRACE_SETREGSET operations.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: ptrace.h: Add commit to #endif of long ifdef block.
Ralf Baechle [Thu, 2 Aug 2012 13:41:09 +0000 (15:41 +0200)]
MIPS: ptrace.h: Add commit to #endif of long ifdef block.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: Switch ELF core dumper to use regsets.
Ralf Baechle [Thu, 2 Aug 2012 13:18:32 +0000 (15:18 +0200)]
MIPS: Switch ELF core dumper to use regsets.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: Implement task_user_regset_view.
Ralf Baechle [Thu, 2 Aug 2012 12:44:11 +0000 (14:44 +0200)]
MIPS: Implement task_user_regset_view.

There are no users yet of task_user_regset_view. yet; users will be
implemented rsp activated in subsequent commits.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: ptrace: Use tracehook helpers.
Ralf Baechle [Tue, 17 Jul 2012 17:43:58 +0000 (19:43 +0200)]
MIPS: ptrace: Use tracehook helpers.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: O32 / 32-bit: Always copy 4 stack arguments.
Ralf Baechle [Sat, 14 Jul 2012 07:22:05 +0000 (09:22 +0200)]
MIPS: O32 / 32-bit: Always copy 4 stack arguments.

This gets us rid of the hard to maintain table of the number of syscall
arguments and paves the way for further restructuring of the syscall
code.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: Provide arch_syscall_addr.
Ralf Baechle [Fri, 13 Jul 2012 21:38:17 +0000 (23:38 +0200)]
MIPS: Provide arch_syscall_addr.

The generic version is wrong for MIPS.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: N32: Delete unused re-definition of SIGILL.
Ralf Baechle [Fri, 13 Jul 2012 19:16:37 +0000 (21:16 +0200)]
MIPS: N32: Delete unused re-definition of SIGILL.

Originally and unnecessarilly added in
dd8c35f40cda31dc8c027a62b73301a310b8b529 (lmo) [N32 ...]

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: N32: Kill definition PT_TRACESYS for good.
Ralf Baechle [Fri, 13 Jul 2012 19:01:12 +0000 (21:01 +0200)]
MIPS: N32: Kill definition PT_TRACESYS for good.

Originally killed in 75ddbae069832b2ef15fb9678347ce7f5fbbbf95 (lmo) [Merge
with Linux 2.5.3.] then unnecessarily added back in
dd8c35f40cda31dc8c027a62b73301a310b8b529 (lmo) [N32 ...]  This predates
Linus' git history ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: 32-bit: Remove unused gas macros fifty and mille.
Ralf Baechle [Fri, 13 Jul 2012 11:36:40 +0000 (13:36 +0200)]
MIPS: 32-bit: Remove unused gas macros fifty and mille.

These are a leftover of the IRIX compat code which was removed in
2957c9e61ee9c37e7ebf2c8acab03e073fe942fd (kernel.org) rsp.
b934da913f236bca00c41d9e386e980586000461 (lmo) [[MIPS] IRIX: Goodbye
and thanks for all the fish].

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: Enable entries for SIGSYS in struct siginfo.
Ralf Baechle [Thu, 12 Jul 2012 15:13:15 +0000 (17:13 +0200)]
MIPS: Enable entries for SIGSYS in struct siginfo.

This is necessary because MIPS doesn't use HAVE_ARCH_SIGINFO_T for
historical reasons.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoMIPS: 64-bit: Mark native syscall table as data object.
Ralf Baechle [Thu, 12 Jul 2012 12:06:46 +0000 (14:06 +0200)]
MIPS: 64-bit: Mark native syscall table as data object.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>