Commit graph

240844 commits

Author SHA1 Message Date
Stephen Wilson
375906f876 x86: mark associated mm when running a task in 32 bit compatibility mode
This patch simply follows the same practice as for setting the TIF_IA32 flag.
In particular, an mm is marked as holding 32-bit tasks when a 32-bit binary is
exec'ed.  Both ELF and a.out formats are updated.

Signed-off-by: Stephen Wilson <wilsons@start.ca>
Reviewed-by: Michel Lespinasse <walken@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-23 16:36:53 -04:00
Stephen Wilson
c2ef45df3b x86: add context tag to mark mm when running a task in 32-bit compatibility mode
This tag is intended to mirror the thread info TIF_IA32 flag.  Will be used to
identify mm's which support 32 bit tasks running in compatibility mode without
requiring a reference to the task itself.

Signed-off-by: Stephen Wilson <wilsons@start.ca>
Reviewed-by: Michel Lespinasse <walken@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-23 16:36:52 -04:00
Al Viro
2fadaef412 auxv: require the target to be tracable (or yourself)
same as for environ, except that we didn't do any checks to
prevent access after suid execve

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-23 16:36:52 -04:00
Al Viro
d6f64b89d7 close race in /proc/*/environ
Switch to mm_for_maps().  Maybe we ought to make it r--r--r--,
since we do checks on IO anyway...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-23 16:36:51 -04:00
Al Viro
ec6fd8a435 report errors in /proc/*/*map* sanely
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-23 16:36:50 -04:00
Al Viro
ca6b0bf0e0 pagemap: close races with suid execve
just use mm_for_maps()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-23 16:36:50 -04:00
Al Viro
26ec3c646e make sessionid permissions in /proc/*/task/* match those in /proc/*
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-23 16:36:49 -04:00
Al Viro
bd23a539d0 fix leaks in path_lookupat()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-23 09:56:55 -04:00
Linus Torvalds
eddecbb601 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  kbuild: Make DEBUG_SECTION_MISMATCH selectable, but not on by default
  genksyms: Regenerate lexer and parser
  genksyms: Track changes to enum constants
  genksyms: simplify usage of find_symbol()
  genksyms: Add helpers for building string lists
  genksyms: Simplify printing of symbol types
  genksyms: Simplify lexer
  genksyms: Do not paste the bison header file to lex.c
  modpost: fix trailing comma
  KBuild: silence "'scripts/unifdef' is up to date."
  kbuild: Add extra gcc checks
  kbuild: reenable section mismatch analysis
  unifdef: update to upstream version 2.5
2011-03-21 15:55:26 -07:00
Jesper Juhl
0bf8c86970 Reduce sequential pointer derefs in scsi_error.c and reduce size as well
This patch reduces the number of sequential pointer derefs in
drivers/scsi/scsi_error.c

This has been submitted a number of times over a couple of years.  I
believe this version adresses all comments it has gathered over time.
Please apply or reject with a reason.

The benefits are:

 - makes the code easier to read.  Lots of sequential derefs of the same
   pointers is not easy on the eye.

 - theoretically at least, just dereferencing the pointers once can
   allow the compiler to generally slightly faster code, so in theory
   this could also be a micro speed optimization.

 - reduces size of object file (tiny effect: on x86-64, in at least one
   configuration, the text size decreased from 9439 bytes to 9400)

 - removes some pointless (mostly trailing) whitespace.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-21 15:54:35 -07:00
Gary Hade
38f7aa23c4 matroxfb: remove incorrect Matrox G200eV support
Remove incorrect Matrox G200eV support that was previously added by
commit e3a1938805

A serious issue with the incorrect G200eV support that reproduces on the
Matrox G200eV equipped IBM x3650 M2 is the total lack of text (login
banner, login prompt, etc) on the console when X is not running and
total lack of text on all of the virtual consoles after X is started.

Any concerns that the incorrect code (upstream since October 2008) has
been successfully used on non-IBM G200eV equipped system(s) appear to be
unwarranted.  In addition to the serious/non-intermittent nature of
issues that have been spotted on IBM systems, complete removal of the
incorrect code is clearly supported by the following Matrox (Yannick
Heneault) provided input:
 "It impossible that this patch should have work on a system.
 The patch only declare the G200eV as a regular G200 which is
 not case. Many registers are different, including at least the
 PLL programming sequence. If the G200eV is programmed like a
 regular G200, it will not display anything."

v1 - Initial patch that removed the incorrect code for _all_
     G200eV equipped systems.
v2 - Darrick Wong provided patch that blacklisted the incorrect
     code on G200eV equipped IBM systems leaving it enabled on
     all G200eV equipped non-IBM systems.
v3 - Same code changes included with v1 plus additional
     justification for complete removal of the incorrect code.

Signed-off-by: Gary Hade <garyhade@us.ibm.com>
Cc: Darrick J. Wong <djwong@us.ibm.com>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Petr Vandrovec <vandrove@vc.cvut.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Yannick Heneault <yannick_heneault@matrox.com>
Cc: Christian Toutant <ctoutant@matrox.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-21 15:50:30 -07:00
Linus Torvalds
3155fe6df5 Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs: (23 commits)
  xfs: don't name variables "panic"
  xfs: factor agf counter updates into a helper
  xfs: clean up the xfs_alloc_compute_aligned calling convention
  xfs: kill support/debug.[ch]
  xfs: Convert remaining cmn_err() callers to new API
  xfs: convert the quota debug prints to new API
  xfs: rename xfs_cmn_err_fsblock_zero()
  xfs: convert xfs_fs_cmn_err to new error logging API
  xfs: kill xfs_fs_mount_cmn_err() macro
  xfs: kill xfs_fs_repair_cmn_err() macro
  xfs: convert xfs_cmn_err to xfs_alert_tag
  xfs: Convert xlog_warn to new logging interface
  xfs: Convert linux-2.6/ files to new logging interface
  xfs: introduce new logging API.
  xfs: zero proper structure size for geometry calls
  xfs: enable delaylog by default
  xfs: more sensible inode refcounting for ialloc
  xfs: stop using xfs_trans_iget in the RT allocator
  xfs: check if device support discard in xfs_ioc_trim()
  xfs: prevent leaking uninitialized stack memory in FSGEOMETRY_V1
  ...
2011-03-21 14:24:56 -07:00
Julien Tinnes
da48524eb2 Prevent rt_sigqueueinfo and rt_tgsigqueueinfo from spoofing the signal code
Userland should be able to trust the pid and uid of the sender of a
signal if the si_code is SI_TKILL.

Unfortunately, the kernel has historically allowed sigqueueinfo() to
send any si_code at all (as long as it was negative - to distinguish it
from kernel-generated signals like SIGILL etc), so it could spoof a
SI_TKILL with incorrect siginfo values.

Happily, it looks like glibc has always set si_code to the appropriate
SI_QUEUE, so there are probably no actual user code that ever uses
anything but the appropriate SI_QUEUE flag.

So just tighten the check for si_code (we used to allow any negative
value), and add a (one-time) warning in case there are binaries out
there that might depend on using other si_code values.

Signed-off-by: Julien Tinnes <jln@google.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-21 14:23:43 -07:00
Linus Torvalds
b52307ca14 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktest
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-ktest:
  ktest: Add STOP_TEST_AFTER to stop the test after a period of time
  ktest: Monitor kernel while running of user tests
  ktest: Fix bug where the test would not end after failure
  ktest: Add BISECT_FILES to run git bisect on paths
  ktest: Add BISECT_SKIP
  ktest: Add manual bisect
  ktest: Handle kernels before make oldnoconfig
  ktest: Start failure timeout on panic too
  ktest: Print logfile name on failure
2011-03-21 14:13:48 -07:00
Linus Torvalds
afd8c40431 Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (ads1015) Make gain and datarate configurable
  hwmon: (ads1015) Drop dynamic attribute group
  hwmon: Add support for Texas Instruments ADS1015
  hwmon: New driver for SMSC SCH5627
  hwmon: (abituguru*) Update my email address
  hwmon: (lm75) Speed up detection
  hwmon: (lm75) Add detection of the National Semiconductor LM75A
  hp_accel: Fix driver name
  Move lis3lv02d drivers to drivers/misc
  Move hp_accel to drivers/platform/x86
  Let Kconfig handle lis3lv02d dependencies
  hwmon: (sht15) Fix integer overflow in humidity calculation
  hwmon: (sht15) Spelling fix
  hwmon: (w83795) Document pin mapping
2011-03-21 14:02:55 -07:00
Luck, Tony
366f7e7a79 pstore: use mount option instead sysfs to tweak kmsg_bytes
/sys/fs is a somewhat strange way to tweak what could more
obviously be tuned with a mount option.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-21 13:50:05 -07:00
Linus Torvalds
10effcb548 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  FS: lookup_mnt() is only used in the core fs routines now
  bfs: fix bitmap size argument to find_first_zero_bit()
  fs: Use BUG_ON(!mnt) at dentry_open().
  fs: devpts_pty_new() return -ENOMEM if dentry allocation failed
  nfs: lock() vs unlock() typo
  pstore: fix leaking ->i_private
  introduce sys_syncfs to sync a single file system
  Small typo fix...
  Filesystem: fifo: Fixed coding style issue.
  fs/inode: Fix kernel-doc format for inode_init_owner
  select: remove unused MAX_SELECT_SECONDS
  vfs: cleanup do_vfs_ioctl()
2011-03-21 10:06:51 -07:00
Linus Torvalds
c3ca48f062 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: core: ignore link-active bit of new nodes, fix device recognition
  firewire: sbp2: revert obsolete 'fix stall with "Unsolicited response"'
  firewire: core: increase default SPLIT_TIMEOUT value
  firewire: ohci: Misleading kfree in ohci.c::pci_probe/remove
  firewire: ohci: omit IntEvent.busReset check rom AT queueing
  firewire: ohci: prevent starting of iso contexts with empty queue
  firewire: ohci: prevent iso completion callbacks after context stop
  firewire: core: rename some variables
  firewire: nosy: should work on Power Mac G4 PCI too
  firewire: core: fix card->reset_jiffies overflow
  firewire: cdev: remove unneeded reference
  firewire: cdev: always wait for outbound transactions to complete
  firewire: cdev: remove unneeded idr_find() from complete_transaction()
  firewire: ohci: log dead DMA contexts
2011-03-21 10:05:22 -07:00
Linus Torvalds
4e76ae4406 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6:
  [PARISC] Convert to new irq_chip functions
  [PARISC] fix per-cpu flag problem in the cpu affinity checkers
  [PARISC] fix vmap flush/invalidate
  eliminate special FLUSH flag from page table
  parisc: flush pages through tmpalias space
2011-03-21 10:04:53 -07:00
Dirk Eibach
c0046867f3 hwmon: (ads1015) Make gain and datarate configurable
Configuration for ads1015 gain and datarate is possible via
devicetree or platform data.

This is a followup patch to previous ads1015 patches on Jean Delvares
tree.

Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-21 17:59:37 +01:00
Jean Delvare
fdf241a8ed hwmon: (ads1015) Drop dynamic attribute group
It is cheaper to handle attributes individually.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Dirk Eibach <eibach@gdsys.de>
2011-03-21 17:59:37 +01:00
Dirk Eibach
8c22a8f575 hwmon: Add support for Texas Instruments ADS1015
Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-21 17:59:36 +01:00
Hans de Goede
a98d506c08 hwmon: New driver for SMSC SCH5627
SMSC SCH5627 Super I/O chips include complete hardware monitoring
capabilities. They can monitor up to 5 voltages, 4 fans and 8
temperatures.

The hardware monitoring part of the SMSC SCH5627 is accessed by talking
through an embedded microcontroller. An application note describing the
protocol for communicating with the microcontroller is available upon
request. Please mail me if you want a copy.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-21 17:59:36 +01:00
Hans de Goede
93d0cc5883 hwmon: (abituguru*) Update my email address
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-21 17:59:36 +01:00
Jean Delvare
e76f67b5ba hwmon: (lm75) Speed up detection
Make the LM75/LM75A device detection faster:

* Don't read the current temperature value when we don't use it.
* Check for unused bits in the configuration register as soon as we
  have read its value.
* Don't use word reads, not all devices support this, and some which
  don't misbehave when you try.
* Check for cycling register values every 40 register addresses
  instead of every 8, it's 5 times faster and just as efficient.

Some of these improvements come straight from the user-space
sensors-detect script, so both detection routines are in line now.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-03-21 17:59:36 +01:00
Len Sorensen
05e82fe40f hwmon: (lm75) Add detection of the National Semiconductor LM75A
Add support for detection of the National Semiconductor LM75A using the ID
register value.

Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-03-21 17:59:36 +01:00
Jean Delvare
96b4b9bfea hp_accel: Fix driver name
I suspect that the "lis3lv02d" driver name is a legacy from before
the split into several modules. Use a specific name for the hp_accel
driver, for better error messages and easier investigation of issues.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Tested-by: Eric Piel <eric.piel@tremplin-utc.net>
Tested-by: Takashi Iwai <tiwai@suse.de>
2011-03-21 17:59:36 +01:00
Jean Delvare
ff606677f6 Move lis3lv02d drivers to drivers/misc
The lis3lv02d drivers aren't hardware monitoring drivers, so the don't
belong to drivers/hwmon. Move them to drivers/misc, short of a better
home.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Tested-by: Eric Piel <eric.piel@tremplin-utc.net>
Tested-by: Takashi Iwai <tiwai@suse.de>
2011-03-21 17:59:36 +01:00
Jean Delvare
efcfed9bad Move hp_accel to drivers/platform/x86
The hp_accel driver isn't a hardware monitoring driver, so it doesn't
belong to drivers/hwmon. Move it to drivers/platform/x86, assuming HP
doesn't ship non-x86 laptops.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Tested-by: Eric Piel <eric.piel@tremplin-utc.net>
Tested-by: Takashi Iwai <tiwai@suse.de>
2011-03-21 17:59:36 +01:00
Jean Delvare
39c3e721d6 Let Kconfig handle lis3lv02d dependencies
The dependencies between the various lis3lv02d drivers make it
impossible to split them to different directories, while we really
want to do this. Move handling of dependencies from Makefile to
Kconfig, to make the move possible at all.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Eric Piel <eric.piel@tremplin-utc.net>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Tested-by: Eric Piel <eric.piel@tremplin-utc.net>
Tested-by: Takashi Iwai <tiwai@suse.de>
2011-03-21 17:59:35 +01:00
Vivien Didelot
ccd32e735d hwmon: (sht15) Fix integer overflow in humidity calculation
An integer overflow occurs in the calculation of RHlinear when the
relative humidity is greater than around 30%. The consequence is a subtle
(but noticeable) error in the resulting humidity measurement.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
Cc: Jonathan Cameron <jic23@cam.ac.uk>
2011-03-21 17:59:35 +01:00
Justin P. Mattock
396bd766a6 hwmon: (sht15) Spelling fix
Remove one too many "n" in a word.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
2011-03-21 17:59:35 +01:00
Jean Delvare
bfcd415dcb hwmon: (w83795) Document pin mapping
Apparently users are interested in this information, so let's provide
it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-03-21 17:59:35 +01:00
Linus Torvalds
f19ade4dfb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc: Add {open_by,name_to}_handle_at and clock_adjtime syscalls.
  sparc: Implement of_iomap().
  sparc: Implement of_address_to_resource().
  sparc: Provide NO_IRQ definition.
2011-03-21 09:53:04 -07:00
Linus Torvalds
111f4268bd Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/ptrace: Remove BUG_ON when full register set not available
  powerpc: Factoring mpic cpu id fetching into a function
  powerpc: Make MPIC honor the "pic-no-reset" device tree property
  powerpc: Document the Open PIC device tree binding
  powerpc/pci: Fix crash in PCI code on ppc64 when matching device nodes
2011-03-21 09:52:27 -07:00
David Howells
0f60f240d5 FS: lookup_mnt() is only used in the core fs routines now
lookup_mnt() is only used in the core fs routines now, so it doesn't need to
be globally declared anymore.  It isn't exported to modules at the moment, so
nothing that can be modularised seems to be using it.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 12:13:10 -04:00
Akinobu Mita
69b195be51 bfs: fix bitmap size argument to find_first_zero_bit()
The usage of find_first_zero_bit() in bfs_create() is wrong for two
reasons.

The bitmap size argument to find_first_zero_bit() is info->si_lasti but
the correct bitmap size is info->si_lasti + 1 as info->si_lasti is the
last valid index in info->si_imap bitmap.

Another problem is that it is impossible to detect that info->si_imap
bitmap is full because there is an off-by-one bug in the return value
check for find_first_zero_bit().  If no zero bits exist in info->si_imap,
find_first_zero_bit() returns info->si_lasti.  But the check can't catch
it due to the off-by-one.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: "Tigran A. Aivazian" <tigran@aivazian.fsnet.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 08:35:12 -04:00
Michal Marek
f2c23f65f6 kbuild: Make DEBUG_SECTION_MISMATCH selectable, but not on by default
CONFIG_DEBUG_SECTION_MISMATCH has also runtime effects due to the
-fno-inline-functions-called-once compiler flag, so forcing it on
everyone is not a good idea.

Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-03-21 10:47:58 +01:00
Tetsuo Handa
c212f9aaf9 fs: Use BUG_ON(!mnt) at dentry_open().
dentry_open() requires callers to pass a valid vfsmount.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 01:10:41 -04:00
Andrey Vagin
aa597bc1f9 fs: devpts_pty_new() return -ENOMEM if dentry allocation failed
In this case nobody can open a slave point, so will be better return
from devpts_pty_new()

Now we should not check error code from d_find_alias() in
devpts_pty_kill(), because the dentry exists all times.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:59:24 -04:00
Dan Carpenter
1c34092adf nfs: lock() vs unlock() typo
These should be spin_unlock() instead of spin_lock().  It's a typo.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:45:50 -04:00
Tony Luck
a872d51010 pstore: fix leaking ->i_private
Move kfree() of i_private out of ->unlink() and into ->evict_inode()

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:45:38 -04:00
Sage Weil
b7ed78f565 introduce sys_syncfs to sync a single file system
It is frequently useful to sync a single file system, instead of all
mounted file systems via sync(2):

 - On machines with many mounts, it is not at all uncommon for some of
   them to hang (e.g. unresponsive NFS server).  sync(2) will get stuck on
   those and may never get to the one you do care about (e.g., /).
 - Some applications write lots of data to the file system and then
   want to make sure it is flushed to disk.  Calling fsync(2) on each
   file introduces unnecessary ordering constraints that result in a large
   amount of sub-optimal writeback/flush/commit behavior by the file
   system.

There are currently two ways (that I know of) to sync a single super_block:

 - BLKFLSBUF ioctl on the block device: That also invalidates the bdev
   mapping, which isn't usually desirable, and doesn't work for non-block
   file systems.
 - 'mount -o remount,rw' will call sync_filesystem as an artifact of the
   current implemention.  Relying on this little-known side effect for
   something like data safety sounds foolish.

Both of these approaches require root privileges, which some applications
do not have (nor should they need?) given that sync(2) is an unprivileged
operation.

This patch introduces a new system call syncfs(2) that takes an fd and
syncs only the file system it references.  Maybe someday we can

 $ sync /some/path

and not get

 sync: ignoring all arguments

The syscall is motivated by comments by Al and Christoph at the last LSF.
syncfs(2) seems like an appropriate name given statfs(2).

A similar ioctl was also proposed a while back, see
	http://marc.info/?l=linux-fsdevel&m=127970513829285&w=2

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:40:29 -04:00
Holger Hans Peter Freyther
1bef82917c Small typo fix...
Hi,

I was backporting the coredump over pipe feature and noticed this small typo,
I wish I would have something bigger to contribute...

>From 15d6080e0ed4267da103c706917a33b1015e8804 Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <holger@moiji-mobile.com>
Date: Thu, 24 Feb 2011 17:42:50 +0100
Subject: [PATCH] fs: Fix a small typo in the comment

The function is called umh_pipe_setup not uhm_pipe_setup.

Signed-off-by: Holger Hans Peter Freyther <holger@moiji-mobile.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:16:09 -04:00
David Jenni
ff38c083ad Filesystem: fifo: Fixed coding style issue.
Fixed coding style issue.

Signed-off-by: David Jenni <dave.j@gmx.ch>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:16:09 -04:00
Ben Hutchings
eaae668d01 fs/inode: Fix kernel-doc format for inode_init_owner
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:16:08 -04:00
Namhyung Kim
2c3d44dc4a select: remove unused MAX_SELECT_SECONDS
Remove the leftover from the commit 8ff3e8e85f ("select:
switch select() and poll() over to hrtimers").

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:16:08 -04:00
Namhyung Kim
27a4f7e61e vfs: cleanup do_vfs_ioctl()
Move declaration of 'inode' to beginning of the function. Since it
is referenced directly or indirectly (in case of FIFREEZE/FITHAW/
FS_IOC_FIEMAP) it's not harmful IMHO. And remove unnecessary casts
using 'argp' instead.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-03-21 00:16:08 -04:00
Linus Torvalds
a44f99c7ef Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: (25 commits)
  video: change to new flag variable
  scsi: change to new flag variable
  rtc: change to new flag variable
  rapidio: change to new flag variable
  pps: change to new flag variable
  net: change to new flag variable
  misc: change to new flag variable
  message: change to new flag variable
  memstick: change to new flag variable
  isdn: change to new flag variable
  ieee802154: change to new flag variable
  ide: change to new flag variable
  hwmon: change to new flag variable
  dma: change to new flag variable
  char: change to new flag variable
  fs: change to new flag variable
  xtensa: change to new flag variable
  um: change to new flag variables
  s390: change to new flag variable
  mips: change to new flag variable
  ...

Fix up trivial conflict in drivers/hwmon/Makefile
2011-03-20 18:14:55 -07:00
Linus Torvalds
b87a2d3e31 Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  scripts/extract-ikconfig: add xz compression support
  kbuild: add GNU GLOBAL tags generation
  setlocalversion: update mercurial tag parsing
2011-03-20 18:13:09 -07:00