Michael Krufky [Mon, 22 Oct 2007 04:44:03 +0000 (01:44 -0300)]
V4L/DVB (6441): tuner: clean up ops checking in tuner_status function
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Michael Krufky [Sun, 21 Oct 2007 22:39:50 +0000 (19:39 -0300)]
V4L/DVB (6440): tuner: convert analog tuner demod sub-modules to dvb_frontend interface
Convert tda9887 and tda8290/5 to dvb_frontend interface
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Michael Krufky [Mon, 22 Oct 2007 03:12:16 +0000 (00:12 -0300)]
V4L/DVB (6439): dvb_frontend: codingstyle cleanups
thanks to checkpatch.pl
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Michael Krufky [Sun, 21 Oct 2007 18:22:25 +0000 (15:22 -0300)]
V4L/DVB (6438): tuner: move analog_demod_priv into struct dvb_frontend
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Michael Krufky [Sun, 21 Oct 2007 17:35:21 +0000 (14:35 -0300)]
V4L/DVB (6437): tuner: clear analog_demod_ops on release
Clear analog_demod_ops on release.
Fix test for analog_demod_ops after tuner attach.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Michael Krufky [Sun, 21 Oct 2007 16:40:56 +0000 (13:40 -0300)]
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>
Michael Krufky [Mon, 22 Oct 2007 12:56:38 +0000 (09:56 -0300)]
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>
Michael Krufky [Mon, 22 Oct 2007 03:28:50 +0000 (00:28 -0300)]
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>
Michael Krufky [Sat, 25 Aug 2007 22:08:45 +0000 (19:08 -0300)]
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>
Mauro Carvalho Chehab [Wed, 24 Oct 2007 12:22:08 +0000 (09:22 -0300)]
V4L/DVB (6431): Improve firmware format
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Mauro Carvalho Chehab [Tue, 23 Oct 2007 18:24:06 +0000 (15:24 -0300)]
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>
Mauro Carvalho Chehab [Thu, 27 Sep 2007 21:27:03 +0000 (18:27 -0300)]
V4L/DVB (6429): Avoid having two tuner commands happening at the same time
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Michel Ludwig [Fri, 27 Jul 2007 11:24:39 +0000 (08:24 -0300)]
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>
Mauro Carvalho Chehab [Thu, 19 Jul 2007 02:14:25 +0000 (23:14 -0300)]
V4L/DVB (6427): Some cleanups at tuner-xc2028 driver
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Mauro Carvalho Chehab [Wed, 18 Jul 2007 16:33:23 +0000 (13:33 -0300)]
V4L/DVB (6426): Some fixes on tuner-xc2028
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Michel Ludwig [Wed, 18 Jul 2007 13:29:10 +0000 (10:29 -0300)]
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>
Michel Ludwig [Wed, 18 Jul 2007 13:26:38 +0000 (10:26 -0300)]
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>
Mauro Carvalho Chehab [Tue, 2 Oct 2007 14:57:03 +0000 (11:57 -0300)]
V4L/DVB (6423): Add tuner-xc2028 driver
Add support for Xceive XC2028/XC3028 tuner driver
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Mauro Carvalho Chehab [Wed, 24 Oct 2007 14:08:20 +0000 (11:08 -0300)]
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>
Mauro Carvalho Chehab [Fri, 25 Aug 2006 19:53:11 +0000 (16:53 -0300)]
V4L/DVB (6421): Make Kconfig reflect the changes at audio helper modules
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Mauro Carvalho Chehab [Fri, 25 Aug 2006 19:53:10 +0000 (16:53 -0300)]
V4L/DVB (6420): V4L2 conversion for tda9875 from V4L1 API
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Mauro Carvalho Chehab [Fri, 25 Aug 2006 19:53:09 +0000 (16:53 -0300)]
V4L/DVB (6419): V4L2 port of tda7432 from V4L1 api
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Mauro Carvalho Chehab [Fri, 25 Aug 2006 19:53:08 +0000 (16:53 -0300)]
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>
Nickolay V. Shmyrev [Fri, 25 Aug 2006 19:53:07 +0000 (16:53 -0300)]
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>
Nickolay V. Shmyrev [Fri, 25 Aug 2006 19:53:04 +0000 (16:53 -0300)]
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>
Nickolay V. Shmyrev [Fri, 26 Oct 2007 20:21:30 +0000 (17:21 -0300)]
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>
Nickolay V. Shmyrev [Fri, 26 Oct 2007 20:15:19 +0000 (17:15 -0300)]
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>
Nickolay V. Shmyrev [Fri, 25 Aug 2006 19:53:02 +0000 (16:53 -0300)]
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>
Mauro Carvalho Chehab [Fri, 26 Oct 2007 19:54:54 +0000 (16:54 -0300)]
V4L/DVB (6412): Audio hooks moved to another file
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Mauro Carvalho Chehab [Fri, 26 Oct 2007 19:51:47 +0000 (16:51 -0300)]
V4L/DVB (6411): remove V4L1 from being compiled when V4L2 only is selected
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Nickolay V. Shmyrev [Fri, 26 Oct 2007 14:01:08 +0000 (11:01 -0300)]
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>
Nickolay V. Shmyrev [Fri, 26 Oct 2007 13:53:21 +0000 (10:53 -0300)]
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>
Nickolay V. Shmyrev [Fri, 25 Aug 2006 19:52:54 +0000 (16:52 -0300)]
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>
Steven Toth [Thu, 20 Sep 2007 04:44:27 +0000 (01:44 -0300)]
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>
Matthias Kaehlcke [Wed, 24 Oct 2007 20:31:15 +0000 (17:31 -0300)]
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>
Adrian Bunk [Wed, 24 Oct 2007 16:23:14 +0000 (13:23 -0300)]
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>
Mauro Carvalho Chehab [Fri, 19 Oct 2007 09:59:33 +0000 (06:59 -0300)]
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>
Mauro Carvalho Chehab [Thu, 18 Oct 2007 23:10:07 +0000 (20:10 -0300)]
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>
Mauro Carvalho Chehab [Thu, 18 Oct 2007 22:56:47 +0000 (19:56 -0300)]
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>
Linus Torvalds [Fri, 25 Jan 2008 20:20:32 +0000 (12:20 -0800)]
Merge branch 'for-linus' of git://git./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
Linus Torvalds [Fri, 25 Jan 2008 16:44:29 +0000 (08:44 -0800)]
Merge branch 'for-linus' of git://git./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"
Linus Torvalds [Fri, 25 Jan 2008 16:40:02 +0000 (08:40 -0800)]
Merge branch 'for-linus' of git://git./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
Linus Torvalds [Fri, 25 Jan 2008 16:39:18 +0000 (08:39 -0800)]
Merge git://git./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
...
Linus Torvalds [Fri, 25 Jan 2008 16:38:25 +0000 (08:38 -0800)]
Merge git://git./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
...
Linus Torvalds [Fri, 25 Jan 2008 16:34:42 +0000 (08:34 -0800)]
Merge git://git./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.
...
Pekka Enberg [Fri, 25 Jan 2008 06:20:51 +0000 (08:20 +0200)]
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>
Karsten Keil [Fri, 25 Jan 2008 10:55:28 +0000 (11:55 +0100)]
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>
Abhijith Das [Fri, 18 Jan 2008 20:06:37 +0000 (14:06 -0600)]
[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>
Bob Peterson [Sun, 20 Jan 2008 03:50:24 +0000 (21:50 -0600)]
[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>
Steven Whitehouse [Thu, 17 Jan 2008 15:12:03 +0000 (15:12 +0000)]
[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>
Bob Peterson [Wed, 16 Jan 2008 14:45:39 +0000 (08:45 -0600)]
[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>
Steven Whitehouse [Wed, 16 Jan 2008 14:24:05 +0000 (14:24 +0000)]
[GFS2] Fix write alloc required shortcut calculation
The comparison was being made against the wrong quantity.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Fri, 11 Jan 2008 19:44:50 +0000 (13:44 -0600)]
[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>
Bob Peterson [Fri, 11 Jan 2008 19:31:12 +0000 (13:31 -0600)]
[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>
Steven Whitehouse [Thu, 10 Jan 2008 15:18:55 +0000 (15:18 +0000)]
[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>
Steven Whitehouse [Thu, 10 Jan 2008 14:49:43 +0000 (14:49 +0000)]
[GFS2] Fix assert in log code
Although the values were all being calculated correctly, there was a
race in the assert due to the way it was using atomic variables. This
changes the value we assert on so that we get the same effect by testing
a different variable. This prevents the assert triggering when it shouldn't.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Tue, 8 Jan 2008 08:14:30 +0000 (08:14 +0000)]
[GFS2] Fix problems relating to execution of files on GFS2
This patch fixes a couple of problems which affected the execution of files
on GFS2. The first is that there was a corner case where inodes were not
always uptodate at the point at which permissions checks were being carried
out, this was resulting in refusal of execute permission, but only on the
first lookup, subsequent requests worked correctly. The second was a problem
relating to incorrect updating of file sizes which was introduced with the
write_begin/end code for GFS2 a little while back.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Abhijith Das <adas@redhat.com>
Bob Peterson [Thu, 3 Jan 2008 15:24:53 +0000 (09:24 -0600)]
[GFS2] Initialize extent_list earlier
Here is a patch for the latest upstream GFS2 code:
The journal extent map needs to be initialized sooner than it
currently is. Otherwise failed mount attempts (e.g. not enough
journals, etc.) may panic trying to access the uninitialized list.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Thu, 3 Jan 2008 11:31:38 +0000 (11:31 +0000)]
[GFS2] Allow page migration for writeback and ordered pages
To improve performance on NUMA, we use the VM's standard page
migration for writeback and ordered pages. Probably we could
also do the same for journaled data, but that would need a
careful audit of the code, so will be the subject of a later
patch.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Wed, 2 Jan 2008 10:16:56 +0000 (10:16 +0000)]
[GFS2] Remove unused variable
The go_drop_th function is never called or referenced.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Fri, 14 Dec 2007 14:04:34 +0000 (14:04 +0000)]
[GFS2] Fix log block mapper
A missing offset in the calculation.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 23:52:13 +0000 (17:52 -0600)]
[GFS2] Minor correction
This is a small correction to my previously posted patch1.
It just changes a divide to a shift. It's faster and doesn't
introduce odd dependencies on 32-bit compiles.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 17:44:41 +0000 (11:44 -0600)]
[GFS2] Eliminate the no longer needed sd_statfs_mutex
This patch eliminates the unneeded sd_statfs_mutex mutex but preserves
the ordering as discussed.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 15:24:08 +0000 (09:24 -0600)]
[GFS2] Incremental patch to fix compiler warning
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 01:29:17 +0000 (19:29 -0600)]
[GFS2] Function meta_read optimization
This patch optimizes function gfs2_meta_read. Basically, gfs2_meta_wait
was being called regardless of whether a disk read was requested.
This just pulls that wait into the if that triggers the read.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 01:16:09 +0000 (19:16 -0600)]
[GFS2] Only fetch the dinode once in block_map
Function gfs2_block_map was often looking up the disk inode twice.
This optimizes it so that only does it once.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 01:13:54 +0000 (19:13 -0600)]
[GFS2] Reorganize function gfs2_glmutex_lock
This patch optimizes the function gfs2_glmutex_lock.
The basic theory is: Why bother initializing a holder, setting up
wait bits and then waiting on them, if you know the glock can be
yours. So the holder stuff is placed inside the if checking if the
glock is locked. This one needs careful scrutiny because changing
anything to do with locking should strike terror into one's heart.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 01:00:16 +0000 (19:00 -0600)]
[GFS2] Run through full bitmaps quicker in gfs2_bitfit
I eliminated the passing of an unused parameter into gfs2_bitfit called rgd.
This also changes the gfs2_bitfit code that searches for free (or used) blocks.
Before, the code was trying to check for bytes that indicated 4 blocks in
the undesired state. The problem is, it was spending more time trying to
do this than it actually was saving. This version only optimizes the case
where we're looking for free blocks, and it checks a machine word at a time.
So on 32-bit machines, it will check 32-bits (16 blocks) and on 64-bit
machines, it will check 64-bits (32 blocks) at a time. The compiler
optimizes that quite well and we save some time, especially when running
through full bitmaps (like the bitmaps allocated for the journals).
There's probably a more elegant or optimized way to do this, but I haven't
thought of it yet. I'm open to suggestions.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 00:51:25 +0000 (18:51 -0600)]
[GFS2] Get rid of useless "found" variable in quota.c
This just eliminates an unused variable from the quota code.
Not likely to be a time saver.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Wed, 12 Dec 2007 00:49:21 +0000 (18:49 -0600)]
[GFS2] Journal extent mapping
This patch saves a little time when gfs2 writes to the journals by
keeping a mapping between logical and physical blocks on disk.
That's better than constantly looking up indirect pointers in
buffers, when the journals are several levels of indirection
(which they typically are).
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Mon, 10 Dec 2007 20:13:27 +0000 (14:13 -0600)]
[GFS2] Remove function gfs2_get_block
This patch is just a cleanup. Function gfs2_get_block() just calls
function gfs2_block_map reversing the last two parameters. By
reversing the parameters, gfs2_block_map() may be called directly
and function gfs2_get_block may be eliminated altogether.
Since this function is done for every block operation,
this streamlines the code and makes it a little bit more efficient.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
David Teigland [Thu, 6 Dec 2007 15:35:25 +0000 (09:35 -0600)]
[GFS2] use pid for plock owner for nfs clients
The fl_owner is that of lockd when posix locks arrive from nfs
clients, so it can't be used to distinguish between lock holders.
Use fl_pid as owner instead; it's the pid of the process on the
nfs client.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Fri, 30 Nov 2007 08:17:15 +0000 (08:17 +0000)]
[GFS2] Remove unused variable
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Abhijith Das [Thu, 29 Nov 2007 20:13:54 +0000 (14:13 -0600)]
[GFS2] patch to check for recursive lock requests in gfs2_rename code path
A certain scenario in the rename code path triggers a kernel BUG()
because it accidentally does recursive locking The first lock is
requested to unlink an already existing inode (replacing a file) and the
second lock is requested when the destination directory needs to alloc
some space. It is rare that these two
events happen during the same rename call, and even more rare that these
two instances try to lock the same rgrp. It is, however, possible.
https://bugzilla.redhat.com/show_bug.cgi?id=404711
Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Wendy Cheng [Thu, 29 Nov 2007 22:56:51 +0000 (17:56 -0500)]
[GFS2] Remove lock methods for lock_nolock protocol
GFS2 supports two modes of locking - lock_nolock for single node filesystem
and lock_dlm for cluster mode locking. The gfs2 lock methods are removed from
file operation table for lock_nolock protocol. This would allow VFS to handle
posix lock and flock logics just like other in-tree filesystems without
duplication.
Signed-off-by: S. Wendy Cheng <wcheng@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Fabio M. Di Nitto [Wed, 28 Nov 2007 15:22:09 +0000 (16:22 +0100)]
[GFS2] Remove unrequired code
Signed-off-by: Fabio M. Di Nitto <fabbione@ubuntu.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Fabio Massimo Di Nitto [Tue, 27 Nov 2007 05:16:42 +0000 (06:16 +0100)]
[GFS2] Fix build warnings
Hi Steven,
Steven Whitehouse wrote:
> Hi,
>
> Now in the -nmw git tree. Thanks,
>
> Steve.
>
> On Wed, 2007-11-21 at 11:54 -0600, Ryan O'Hara wrote:
this patch introduces a bunch of build warnings by leaving around
struct inode *inode = &ip->i_inode;
The patch in attachment cleans them up. Please apply.
Signed-off-by: Fabio Massimo Di Nitto <fabbione@ubuntu.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Ryan O'Hara [Wed, 21 Nov 2007 17:54:54 +0000 (11:54 -0600)]
[GFS2] remove unnecessary permission checks
Remove read/write permission() checks from xattr operations.
VFS layer is already handling permission for xattrs via the
xattr_permission() call, so there is no need for gfs2 to
check permissions. Futhermore, using permission() for SELinux
xattrs ops is incorrect.
Signed-off-by: Ryan O'Hara <rohara@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Fabio Massimo Di Nitto [Fri, 16 Nov 2007 09:50:40 +0000 (09:50 +0000)]
[GFS2] Fix runtime issue with UP kernels
The issue is indeed UP vs SMP and it is totally random.
spin_is_locked() is a bad assertion because there is no correct answer on UP.
on UP spin_is_locked() has to return either one value or another, always.
This means that in my setup I am lucky enough to trigger the issue and your you
are lucky enough not to.
the patch in attachment removes the bogus calls to BUG_ON and according to David
(in CC and thanks for the long explanation on the problem) we can rely upon
things like lockdep to find problem that might be trying to catch.
Signed-off-by: Fabio M. Di Nitto <fabbione@ubuntu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
David Teigland [Thu, 15 Nov 2007 15:01:13 +0000 (09:01 -0600)]
[GFS2] tidy up error message
Print error with log_error() to be consistent with others.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fabbione@ubuntu.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Fabio Massimo Di Nitto [Thu, 15 Nov 2007 13:48:52 +0000 (13:48 +0000)]
[GFS2] Check for installation of mount helpers for DLM mounts
The patch is a fix to abort mount if the mount.gfs* and possible
umount.* are missing from /sbin.
While we do what we can to guarantee that they are installed properly in
userland (CVS HEAD), we want to make sure that mount still aborts properly.
The only sign of missing helpers is that lock_dlm will receive no mount options
at all. According to David the problem does not exist for lock_nolock as the
helpers are not required.
The patch has been tested for both gfs and gfs2 and it works as expected. The
lack of mount.gfs* will generate an error that is propagated to mount:
oot@node1:~# mount -t gfs2 /dev/nbd2 /mnt/
mount: wrong fs type, bad option, bad superblock on /dev/nbd2,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
[ 3513.303346] GFS2: fsid=: Trying to join cluster "lock_dlm", "gutsy:gfs2"
[ 3513.304546] DLM/GFS2/GFS ERROR: (u)mount helpers are not installed properly!
[ 3513.306290] GFS2: fsid=: can't mount proto=lock_dlm, table=gutsy:gfs2, hostdata=
You might want to notice that it will also avoid mount to hang or fail silently
or with strange errors that will require the cluster to reboot/restart before
you can actually mount the filesystem again.
Signed-off-by: Fabio M. Di Nitto <fabbione@ubuntu.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Fri, 9 Nov 2007 10:07:21 +0000 (10:07 +0000)]
[GFS2] Don't periodically update the jindex
We only care about the content of the jindex in two cases,
one is when we mount the fs and the other is when we need
to recover another journal. In both cases we have to update
the jindex anyway, so there is no point in updating it
periodically between times, so this removes it to simplify
gfs2_logd.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Fri, 9 Nov 2007 10:01:41 +0000 (10:01 +0000)]
[GFS2] Move gfs2_logd into log.c
This means that we can mark gfs2_ail1_empty static and prepares
the way for further changes.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Thu, 8 Nov 2007 14:55:03 +0000 (14:55 +0000)]
[GFS2] Use atomic_t for journal free blocks counter
This patch changes the counter which keeps track of the free
blocks in the journal to an atomic_t in preparation for the
following patch which will update the log reservation code.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Thu, 8 Nov 2007 14:25:12 +0000 (14:25 +0000)]
[GFS2] Don't add glocks to the journal
The only reason for adding glocks to the journal was to keep track
of which locks required a log flush prior to release. We add a
flag to the glock to allow this check to be made in a simpler way.
This reduces the size of a glock (by 12 bytes on i386, 24 on x86_64)
and means that we can avoid extra work during the journal flush.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
David Teigland [Wed, 7 Nov 2007 15:03:56 +0000 (09:03 -0600)]
[GFS2] check kthread_should_stop when waiting
Use wait_event_interruptible() in the lock_dlm thread instead
of an open coded equivalent, and include a kthread_should_stop()
check in the wait test so we don't miss a kthread_stop().
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Bob Peterson [Fri, 2 Nov 2007 14:37:15 +0000 (09:37 -0500)]
[GFS2] Given device ID rather than s_id in "id" sysfs file
This patch changes the /sys/fs/gfs2/<s_id>/id file to give the device
id "major:minor" rather than the s_id. That enables gfs2_tool to
match devices properly (by id, not name) when locating the tuning files.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Fri, 2 Nov 2007 09:14:31 +0000 (09:14 +0000)]
[GFS2] Remove flags no longer required
The HIF_MUTEX and HIF_PROMOTE flags were set on the glock holders
depending upon which of the two waiters lists they were going to
be queued upon. They were then tested when the holders were taken
off the lists to ensure that the right type of holder was being
dequeued.
Since we are already using separate lists, there doesn't seem a
lot of point having these flags as well, and since setting them
and testing them is in the fast path for locking and unlocking
glock, this patch removes them.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Fri, 2 Nov 2007 08:39:34 +0000 (08:39 +0000)]
[GFS2] Reorder writeback for glock sync
Previously we were doing (write data, wait for data, write metadata, wait
for metadata). After this patch we so (write metadata, write data, wait for
data, wait for metadata) which should be more efficient.
Also I noticed that the drop_bh and xmote_bh functions were almost
identical. In fact the only difference was a single test, and that
test is such that in the drop_bh case, it would always evaluate to
the correct result. As such we can use the xmote_bh functions in
all the places where we were using the drop_bh function and remove
the drop_bh functions.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Thu, 1 Nov 2007 09:34:14 +0000 (09:34 +0000)]
[GFS2] Add sync_page to metadata address space operations
This set of address space operations was missing a sync_page
operation.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Thu, 1 Nov 2007 09:26:54 +0000 (09:26 +0000)]
[GFS2] Remove "reclaim limit"
This call to reclaim glocks is not needed, and in particular we don't want it
in the fast path for locking glocks. The limit was entirely arbitrary anyway
and we can't expect users to adjust things like this, the remaining code will
do the right thing on its own.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Wed, 31 Oct 2007 14:24:33 +0000 (14:24 +0000)]
[GFS2] Remove unused variables
These haven't been used for some time, remove them.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Thu, 18 Oct 2007 10:15:50 +0000 (11:15 +0100)]
[GFS2] Use correct include file in ops_address.c
Something changed in the upstream kernel, and it needs this
one-liner to allow ops_address.c to build.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Wed, 17 Oct 2007 13:05:41 +0000 (14:05 +0100)]
[GFS2] Don't hold page lock when starting transaction
This is an addendum to the new AOPs work which moves the point
at which we take the page lock so that we don't get it until
the last possible moment. This resolves a conflict between
starting transactions and the page lock.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Wed, 17 Oct 2007 08:04:24 +0000 (09:04 +0100)]
[GFS2] Add writepages for GFS2 jdata
This patch resolves a lock ordering issue where we had been getting
a transaction lock in the wrong order with respect to the page lock.
By using writepages rather than just writepage, it is then possible
to start a transaction before locking the page, and thus matching the
locking order elsewhere in the code.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Fri, 28 Sep 2007 12:49:05 +0000 (13:49 +0100)]
[GFS2] Split gfs2_writepage into three cases
This patch splits gfs2_writepage into separate functions for each of
the three cases: writeback, ordered and journalled. As a result
it becomes a lot easier to see what each one is doing. The common
code is moved into gfs2_writepage_common.
This fixes a performance bug where we were doing more work than
strictly required in the ordered write case.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Wed, 17 Oct 2007 07:47:38 +0000 (08:47 +0100)]
[GFS2] Introduce gfs2_set_aops()
Just like ext3 we now have three sets of address space operations
to cover the cases of writeback, ordered and journalled data
writes. This means that the individual operations can now become
less complicated as we are able to remove some of the tests for
file data mode from the code.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Wed, 17 Oct 2007 07:35:19 +0000 (08:35 +0100)]
[GFS2] Add gfs2_is_writeback()
This adds a function "gfs2_is_writeback()" along the lines of the
existing "gfs2_is_jdata()" in order to clean up the code and make
the various tests for the inode mode more obvious. It also fixes
the PageChecked() logic where we were resetting the flag too early
in the case of an error path.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Tue, 16 Oct 2007 10:47:04 +0000 (11:47 +0100)]
[GFS2] Remove unused field in struct gfs2_inode
Removes a field that is not used.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Steven Whitehouse [Mon, 15 Oct 2007 15:29:05 +0000 (16:29 +0100)]
[GFS2] Remove useless i_cache from inodes
The i_cache was designed to keep references to the indirect blocks
used during block mapping so that they didn't have to be looked
up continually. The idea failed because there are too many places
where the i_cache needs to be freed, and this has in the past been
the cause of many bugs.
In addition there was no performance benefit being gained since the
disk blocks in question were cached anyway. So this patch removes
it in order to simplify the code to prepare for other changes which
would otherwise have had to add further support for this feature.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>