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Commit Graph

76142 Commits

Author SHA1 Message Date
Michael Krufky
1dde7a4fa2 V4L/DVB (6436): tuner: move analog_tuner_ops into dvb_frontend_ops
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:07 -02:00
Michael Krufky
5bea1cd387 V4L/DVB (6435): tda8290: add support for NXP TDA18271 tuner and TDA8295 analog demod
Add basic support for NXP TDA8295 analog demod and TDA18271 tuner silicon.

TDA8295 + TDA8275a not yet tested.
TDA8290 + TDA18271 not yet supported.

Digital mode of TDA18271 not yet tested & needs more work.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:06 -02:00
Michael Krufky
ce1f8bdb0c V4L/DVB (6434): tda827x: fix GPL export on attach function
EXPORT_SYMBOL should have been EXPORT_SYMBOL_GPL

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:06 -02:00
Michael Krufky
746d9732db V4L/DVB (6433): Move all tda8275/8275a tuning code from tda8290 module into tda827x module
Add analog tuning support to tda827x dvb_frontend tuner module.

Convert tda8290 module back to native tuner interface.

The tda8290 analog demodulator will be handled the same way as tda9887.
The tuner.ko module (tuner-core) will pass commands to tda8290 via the
tuner_operations interface.  tda8290 will communicate with tda827x via
the dvb_frontend interface, while passing a pointer to a private data
structure.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:05 -02:00
Mauro Carvalho Chehab
de3fe21ba2 V4L/DVB (6431): Improve firmware format
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:05 -02:00
Mauro Carvalho Chehab
215b95baf9 V4L/DVB (6430): Convert tuner-xc2028 driver to the newer hybrid approach
This changeset converts tuner-xc2028 to the newer hybrid approach. It also
prevents creating twice the xc3028 private struct by both DVB and V4L parts.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:05 -02:00
Mauro Carvalho Chehab
3b20532c79 V4L/DVB (6429): Avoid having two tuner commands happening at the same time
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:04 -02:00
Michel Ludwig
ff7326d4f0 V4L/DVB (6428): Make the naming of the DTV firmware files more consistent
Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:04 -02:00
Mauro Carvalho Chehab
d4e7668104 V4L/DVB (6427): Some cleanups at tuner-xc2028 driver
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:04 -02:00
Mauro Carvalho Chehab
2e4160ca80 V4L/DVB (6426): Some fixes on tuner-xc2028
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:04 -02:00
Michel Ludwig
701672eb73 V4L/DVB (6425): Add experimental DVB frontend tuner interface to xc2028/3028
Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:03 -02:00
Michel Ludwig
c2622e5f8e V4L/DVB (6424): Improve tuner-xc2028 script
Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:03 -02:00
Mauro Carvalho Chehab
6cb45879dc V4L/DVB (6423): Add tuner-xc2028 driver
Add support for Xceive XC2028/XC3028 tuner driver

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:02 -02:00
Mauro Carvalho Chehab
1246657785 V4L/DVB (6422): Add the pending entries for xc2028/3028 based boards
Also replaces all occurrences of TUNER_XCEIVE_XC3028 to TUNER_XC2028.

Some work is still may be required to make sure that non-tm6000 drivers will
be capable of using tuner-xc2028.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:01 -02:00
Mauro Carvalho Chehab
07533b6a80 V4L/DVB (6421): Make Kconfig reflect the changes at audio helper modules
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:01 -02:00
Mauro Carvalho Chehab
5eba35714e V4L/DVB (6420): V4L2 conversion for tda9875 from V4L1 API
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:00 -02:00
Mauro Carvalho Chehab
7a00d45cf0 V4L/DVB (6419): V4L2 port of tda7432 from V4L1 api
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:00 -02:00
Mauro Carvalho Chehab
dc3d75da05 V4L/DVB (6418): Converted tvaudio from V4L1 to V4L2
V4L1 ioctls were replaced to V4L2 were applicable. The older ones
already implemented were removed.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:01:00 -02:00
Nickolay V. Shmyrev
155c6ab9ed V4L/DVB (6417): Report detected sound carrier into rxsubchans
Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:59 -02:00
Nickolay V. Shmyrev
4b9b936f27 V4L/DVB (6416): Split hooks on volume and audio mode and rework their handling
Also convert audio_mode_gpio functions from audio_hook

Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:59 -02:00
Nickolay V. Shmyrev
40c6e683a2 V4L/DVB (6415): Restructurize volume hook and drop unused mute hook
Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:59 -02:00
Nickolay V. Shmyrev
de5bec6bb5 V4L/DVB (6414): Remove bass, treble and balance from audio hook since they are unused
Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:59 -02:00
Nickolay V. Shmyrev
5b261016f0 V4L/DVB (6413): Forward VIDIOCGAUDIO and VIDIOCSAUDIO through v4l1-compat
Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:58 -02:00
Mauro Carvalho Chehab
c2806d03c0 V4L/DVB (6412): Audio hooks moved to another file
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:58 -02:00
Mauro Carvalho Chehab
c96dd07106 V4L/DVB (6411): remove V4L1 from being compiled when V4L2 only is selected
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:57 -02:00
Nickolay V. Shmyrev
e84619b174 V4L/DVB (6410): Partial conversion from V4L1 to V4L2
This is part of the old V4L1->V4L2 bttv patch, ported to current tree
by Mauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:57 -02:00
Nickolay V. Shmyrev
302f61ad5d V4L/DVB (6409): Cleanup: removed i2c_vidiocschan
This is part of the old V4L1->V4L2 bttv patch, ported to current tree
by Mauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:56 -02:00
Nickolay V. Shmyrev
012cf21975 V4L/DVB (6408): Cleanup: Removed obsoleted code from bttv-cards
This is part of the old V4L1->V4L2 bttv patch, ported to current tree
by Mauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: Nickolay V. Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:56 -02:00
Steven Toth
e92adc2c39 V4L/DVB (6404): cx23885: i2c 16bit reg/val read/write fix
Fix i2c reads and writes of 16bit register address / values

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:56 -02:00
Matthias Kaehlcke
289d4d2f07 V4L/DVB (6400): usbvision: Convert the usbvision->lock semaphore to the mutex API
Convert the usbvision->lock semaphore to the mutex API

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Reviewed-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:55 -02:00
Adrian Bunk
b02044d81f V4L/DVB (6399): saa7134/: make 2 functions static
saa7134_buffer_requeue() and set_tvnorm() can become static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:55 -02:00
Mauro Carvalho Chehab
55c88610fe V4L/DVB (6386): Add support for radio on CX88_BOARD_MSI_TVANYWHERE_MASTER
This board has some special tea5767 configuration. Basically, radio 
XTAL uses a different frequency than the other supported radios. It 
uses a 13 MHz XTAL.

This patch adds the proper radio gpio and tea5767 configurations for 
the board.

Also, with PAL/BG, the board requires some special init for tda9887:
port1=0 port2=0 qss=1

Thanks to Serge Kolotylo and MIDImaster for their help on identifying 
the proper needs for this driver.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:55 -02:00
Mauro Carvalho Chehab
0e1165e8d0 V4L/DVB (6385): Adds the capability of configuring tea5767 support
tea5767 has several possible configurations. Before the patch, the
driver were assuming the more common configuration. However, some newer
cards, like MSI @nyware Master requires other configurations, like
de-activating a gpio port and changing chip Xtal.

This patch adds the capability of altering device configuration at
runtime. This may also be used later to activate some features like
auto-mute when signal is weak.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:54 -02:00
Mauro Carvalho Chehab
7f1711234e V4L/DVB (6384): Replace TDA9887_SET_CONFIG by TUNER_SET_CONFIG
Currently, the only tuner-specific device that allows special
configurations is tda9887. However, tea5767 also may require some
special configurations (for example, to specify a different Xtal freq).

This patch replaces TDA9887_SET_CONFIG by a more generic internal ioctl
(TUNER_SET_CONFIG). The newer one allows specifying what tuner is
appliable to a configuration set, and allows an arbitrary configuration
struct.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-01-25 19:00:54 -02:00
Linus Torvalds
2d94dfc8c3 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6:
  mount options: fix jfs
  JFS: simplify types to get rid of sparse warning
  JFS: FIx one more plain integer as NULL pointer warning
  JFS: Remove defconfig ptr comparison to 0
  JFS: use DIV_ROUND_UP where appropriate
  Remove unnecessary kmalloc casts in the jfs filesystem
  JFS is missing a memory barrier
  JFS: Make sure special inode data is written after journal is flushed
  JFS: clear PAGECACHE_TAG_DIRTY for no-write pages
2008-01-25 12:20:32 -08:00
Linus Torvalds
b47711bfbc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  selinux: make mls_compute_sid always polyinstantiate
  security/selinux: constify function pointer tables and fields
  security: add a secctx_to_secid() hook
  security: call security_file_permission from rw_verify_area
  security: remove security_sb_post_mountroot hook
  Security: remove security.h include from mm.h
  Security: remove security_file_mmap hook sparse-warnings (NULL as 0).
  Security: add get, set, and cloning of superblock security information
  security/selinux: Add missing "space"
2008-01-25 08:44:29 -08:00
Linus Torvalds
7556afa0e0 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  [AVR32] extint: Set initial irq type to low level
  [AVR32] extint: change set_irq_type() handling
  [AVR32] NMI debugging
  [AVR32] constify function pointer tables
  [AVR32] ATNGW100: Update defconfig
  [AVR32] ATSTK1002: Update defconfig
  [AVR32] Kconfig: Choose daughterboard instead of CPU
  [AVR32] Add support for ATSTK1003 and ATSTK1004
  [AVR32] Clean up external DAC setup code
  [AVR32] ATSTK1000: Move gpio-leds setup to setup.c
  [AVR32] Add support for AT32AP7001 and AT32AP7002
  [AVR32] Provide more CPU information in /proc/cpuinfo and dmesg
  [AVR32] Oprofile support
  [AVR32] Include instrumentation menu
  Disable VGA text console for AVR32 architecture
  [AVR32] Enable debugging only when needed
  ptrace: Call arch_ptrace_attach() when request=PTRACE_TRACEME
  [AVR32] Remove redundant try_to_freeze() call from do_signal()
  [AVR32] Drop GFP_COMP for DMA memory allocations
2008-01-25 08:40:02 -08:00
Linus Torvalds
e07dd2ad30 Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (56 commits)
  [GFS2] Allow journal recovery on read-only mount
  [GFS2] Lockup on error
  [GFS2] Fix page_mkwrite truncation race path
  [GFS2] Fix typo
  [GFS2] Fix write alloc required shortcut calculation
  [GFS2] gfs2_alloc_required performance
  [GFS2] Remove unneeded i_spin
  [GFS2] Reduce inode size by moving i_alloc out of line
  [GFS2] Fix assert in log code
  [GFS2] Fix problems relating to execution of files on GFS2
  [GFS2] Initialize extent_list earlier
  [GFS2] Allow page migration for writeback and ordered pages
  [GFS2] Remove unused variable
  [GFS2] Fix log block mapper
  [GFS2] Minor correction
  [GFS2] Eliminate the no longer needed sd_statfs_mutex
  [GFS2] Incremental patch to fix compiler warning
  [GFS2] Function meta_read optimization
  [GFS2] Only fetch the dinode once in block_map
  [GFS2] Reorganize function gfs2_glmutex_lock
  ...
2008-01-25 08:39:18 -08:00
Linus Torvalds
eba0e319c1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (125 commits)
  [CRYPTO] twofish: Merge common glue code
  [CRYPTO] hifn_795x: Fixup container_of() usage
  [CRYPTO] cast6: inline bloat--
  [CRYPTO] api: Set default CRYPTO_MINALIGN to unsigned long long
  [CRYPTO] tcrypt: Make xcbc available as a standalone test
  [CRYPTO] xcbc: Remove bogus hash/cipher test
  [CRYPTO] xcbc: Fix algorithm leak when block size check fails
  [CRYPTO] tcrypt: Zero axbuf in the right function
  [CRYPTO] padlock: Only reset the key once for each CBC and ECB operation
  [CRYPTO] api: Include sched.h for cond_resched in scatterwalk.h
  [CRYPTO] salsa20-asm: Remove unnecessary dependency on CRYPTO_SALSA20
  [CRYPTO] tcrypt: Add select of AEAD
  [CRYPTO] salsa20: Add x86-64 assembly version
  [CRYPTO] salsa20_i586: Salsa20 stream cipher algorithm (i586 version)
  [CRYPTO] gcm: Introduce rfc4106
  [CRYPTO] api: Show async type
  [CRYPTO] chainiv: Avoid lock spinning where possible
  [CRYPTO] seqiv: Add select AEAD in Kconfig
  [CRYPTO] scatterwalk: Handle zero nbytes in scatterwalk_map_and_copy
  [CRYPTO] null: Allow setkey on digest_null 
  ...
2008-01-25 08:38:25 -08:00
Linus Torvalds
df8dc74e8a Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6
This can be broken down into these major areas:
 - Documentation updates (language translations and fixes, as
   well as kobject and kset documenatation updates.)
 - major kset/kobject/ktype rework and fixes.  This cleans up the
   kset and kobject and ktype relationship and architecture,
   making sense of things now, and good documenation and samples
   are provided for others to use.  Also the attributes for
   kobjects are much easier to handle now.  This cleaned up a LOT
   of code all through the kernel, making kobjects easier to use
   if you want to.
 - struct bus_type has been reworked to now handle the lifetime
   rules properly, as the kobject is properly dynamic.
 - struct driver has also been reworked, and now the lifetime
   issues are resolved.
 - the block subsystem has been converted to use struct device
   now, and not "raw" kobjects.  This patch has been in the -mm
   tree for over a year now, and finally all the issues are
   worked out with it.  Older distros now properly work with new
   kernels, and no userspace updates are needed at all.
 - nozomi driver is added.  This has also been in -mm for a long
   time, and many people have asked for it to go in.  It is now
   in good enough shape to do so.
 - lots of class_device conversions to use struct device instead.
   The tree is almost all cleaned up now, only SCSI and IB is the
   remaining code to fix up...

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (196 commits)
  Driver core: coding style fixes
  Kobject: fix coding style issues in kobject c files
  Kobject: fix coding style issues in kobject.h
  Driver core: fix coding style issues in device.h
  spi: use class iteration api
  scsi: use class iteration api
  rtc: use class iteration api
  power supply : use class iteration api
  ieee1394: use class iteration api
  Driver Core: add class iteration api
  Driver core: Cleanup get_device_parent() in device_add() and device_move()
  UIO: constify function pointer tables
  Driver Core: constify the name passed to platform_device_register_simple
  driver core: fix build with SYSFS=n
  sysfs: make SYSFS_DEPRECATED depend on SYSFS
  Driver core: use LIST_HEAD instead of call to INIT_LIST_HEAD in __init
  kobject: add sample code for how to use ksets/ktypes/kobjects
  kobject: add sample code for how to use kobjects in a simple manner.
  kobject: update the kobject/kset documentation
  kobject: remove old, outdated documentation.
  ...
2008-01-25 08:35:13 -08:00
Pekka Enberg
556a169dab slab: fix bootstrap on memoryless node
If the node we're booting on doesn't have memory, bootstrapping kmalloc()
caches resorts to fallback_alloc() which requires ->nodelists set for all
nodes.  Fix that by calling set_up_list3s() for CACHE_CACHE in
kmem_cache_init().

As kmem_getpages() is called with GFP_THISNODE set, this used to work before
because of breakage in 2.6.22 and before with GFP_THISNODE returning pages from
the wrong node if a node had no memory. So it may have worked accidentally and
in an unsafe manner because the pages would have been associated with the wrong
node which could trigger bug ons and locking troubles.

Tested-by: Mel Gorman <mel@csn.ul.ie>
Tested-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
[ With additional one-liner by Olaf Hering  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-25 08:30:36 -08:00
Karsten Keil
eb36f4fc01 fix oops on rmmod capidrv
Fix overwriting the stack with the version string
(it is currently 10 bytes + zero) when unloading the
capidrv module. Safeguard against overwriting it
should the version string grow in the future.

Should fix Kernel Bug Tracker Bug 9696.

Signed-off-by: Gerd v. Egidy <gerd.von.egidy@intra2net.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-25 08:26:10 -08:00
Abhijith Das
7bc5c414fe [GFS2] Allow journal recovery on read-only mount
This patch allows gfs2 to perform journal recovery even if it is mounted
read-only. Strictly speaking, a read-only mount should not be writing to
the filesystem, but we do this only to perform journal recovery. A
read-only mount will fail if we don't recover the dirty journal. Also,
when gfs2 is used as a root filesystem, it will be mounted read-only
before being mounted read-write during the boot sequence. A failed
read-only mount will panic the machine during bootup.

Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:21:22 +00:00
Bob Peterson
1b8177ec1e [GFS2] Lockup on error
I spotted this bug while I was digging around.  Looks like it could cause
a lockup in some rare error condition.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:21:04 +00:00
Steven Whitehouse
b7fe2e391e [GFS2] Fix page_mkwrite truncation race path
There was a bug in the truncation/invalidation race path for
->page_mkwrite for gfs2. It ought to return 0 so that the effect is the
same as if the page was truncated at any of the other points at which
the page_lock is dropped. This will result in the restart of the whole
page fault path. If it was due to a real truncation (as opposed to an
invalidate because we let a glock go) then the ->fault path will pick
that up when it gets called again.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:20:15 +00:00
Bob Peterson
3e5cd0877e [GFS2] Fix typo
This patch fixes a minor typo.  Surprisingly, it still compiled.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:19:51 +00:00
Steven Whitehouse
1af535727b [GFS2] Fix write alloc required shortcut calculation
The comparison was being made against the wrong quantity.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:19:28 +00:00
Bob Peterson
0522053519 [GFS2] gfs2_alloc_required performance
This is a small I/O performance enhancement to gfs2.  (Actually, it is a rework of
an earlier version I got wrong).  The idea here is to check if the write extends
past the last block in the file.  If so, the function can save itself a lot of
time and trouble because it knows an allocate will be required.  Benchmarks like
iozone should see better performance.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:19:03 +00:00
Bob Peterson
598278bd48 [GFS2] Remove unneeded i_spin
This patch removes a vestigial variable "i_spin" from the gfs2_inode
structure.  This not only saves us memory (>300000 of these in memory
for the oom test) it also saves us time because we don't have to
spend time initializing it (i.e. slightly better performance).

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:18:44 +00:00
Steven Whitehouse
6dbd822487 [GFS2] Reduce inode size by moving i_alloc out of line
It is possible to reduce the size of GFS2 inodes by taking the i_alloc
structure out of the gfs2_inode. This patch allocates the i_alloc
structure whenever its needed, and frees it afterward. This decreases
the amount of low memory we use at the expense of requiring a memory
allocation for each page or partial page that we write. A quick test
with postmark shows that the overhead is not measurable and I also note
that OCFS2 use the same approach.

In the future I'd like to solve the problem by shrinking down the size
of the members of the i_alloc structure, but for now, this reduces the
immediate problem of using too much low-memory on x86 and doesn't add
too much overhead.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2008-01-25 08:18:25 +00:00