Commit graph

8970 commits

Author SHA1 Message Date
Mauro Carvalho Chehab
bd7319dc32 [media] DocBook: Use base64 for gif/png files
The patch utility doesn't work with non-binary files. This causes some
tools to break, like generating tarball targets and the scripts that
generate diff patches at http://www.kernel.org/pub/linux/kernel/v2.6/.

So, let's convert all binaries to ascii using base64, and add a
logic at Makefile to convert them back into binaries at runtime.

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:59 -03:00
Mauro Carvalho Chehab
a012fb2c9b [media] DocBook: Don't be noisy at make cleanmediadocs
While here, remove the mediaindexdocs from PHONY.

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:58 -03:00
Mauro Carvalho Chehab
84b01c1633 [media] DocBook/video.xml: Document the remaining data structures
Now, all data structures are commented. A few ioctls remain undocumented:

Error: no ID for constraint linkend: VIDEO_GET_SIZE.
Error: no ID for constraint linkend: VIDEO_GET_FRAME_RATE.
Error: no ID for constraint linkend: VIDEO_GET_PTS.
Error: no ID for constraint linkend: VIDEO_GET_FRAME_COUNT.
Error: no ID for constraint linkend: VIDEO_COMMAND.
Error: no ID for constraint linkend: VIDEO_TRY_COMMAND.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:58 -03:00
Mauro Carvalho Chehab
dc05e57172 [media] DocBook/video.xml: Fix section references with video.h.xml
Make the reference links at video.h.xml to match the ones at video.xml.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:58 -03:00
Mauro Carvalho Chehab
ec77f15cae [media] DocBook/Makefile: Remove osd.h header
The av7110 uses an OSD API. Such API is not documented at all. Also,
the osd.h API uses camelCase and some other weird stuff. Also, dvb-core
doesn't recognize it.

I don't see any good reason why we should document it. It seems better
to just let it as-is. If ever needed, it is probably better to write
a different API for dvb-core.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:58 -03:00
Mauro Carvalho Chehab
ca5b2339c8 [media] DocBook/net.xml: Synchronize Network data structure
There's no documentation at all for the DVB net API. Still, better to
remove a few warnings about the missing symbols. So, add the net data
structure inside the net.xml. Now, only the ioctl documentation is missed.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:57 -03:00
Mauro Carvalho Chehab
ab94782213 [media] DocBook/demux.xml: Add the remaining data structures to the API spec
Still, there are a few ioctl's not documented:

Error: no ID for constraint linkend: DMX_GET_PES_PIDS.
Error: no ID for constraint linkend: DMX_GET_CAPS.
Error: no ID for constraint linkend: DMX_SET_SOURCE.
Error: no ID for constraint linkend: DMX_ADD_PID.
Error: no ID for constraint linkend: DMX_REMOVE_PID.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:57 -03:00
Mauro Carvalho Chehab
fb029093e7 [media] DocBook/demux.xml: Fix section references with dmx.h.xml
Make the reference links at dmx.h.xml to match the ones at demux.xml.

While here, also syncronizes the structures defined inside the API,
in order to match the current API.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:57 -03:00
Mauro Carvalho Chehab
cde291dfd7 [media] DocBook/ca.xml: Describe structure ca_pid
This is the remaining missing structure at ca.xml. The ioctl's are still
missing through.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:57 -03:00
Mauro Carvalho Chehab
2b680d1b4e [media] Docbook/ca.xml: match section ID's with the reference links
Make sure that both ca.h.xml and ca.xml will match the same names for
the sections/links.

This way, it is now possible to identify API spec gaps:

Error: no ID for constraint linkend: ca-pid.
Error: no ID for constraint linkend: ca-pid.
Error: no ID for constraint linkend: CA_RESET.
Error: no ID for constraint linkend: CA_GET_CAP.
Error: no ID for constraint linkend: CA_GET_SLOT_INFO.
Error: no ID for constraint linkend: CA_GET_DESCR_INFO.
Error: no ID for constraint linkend: CA_GET_MSG.
Error: no ID for constraint linkend: CA_SEND_MSG.
Error: no ID for constraint linkend: CA_SET_DESCR.
Error: no ID for constraint linkend: CA_SET_PID.

Basically, in this case, no CA ioctl is described at the specs, and one
file structure (ca-pid) is missing.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:57 -03:00
Mauro Carvalho Chehab
a2eb7c0200 [media] DocBook: Document AUDIO_CONTINUE ioctl
Although this ioctl is only used at the av7110 driver, it is not
described at the API docbook. Yet, AUDIO_PAUSE ioctl description
somewhat describes it. Fill the gap by using the information there
and by looking inside av7110 implementation.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:56 -03:00
Mauro Carvalho Chehab
34452432d1 [media] DocBook/audio.xml: synchronize attribute changes
Some attributes suffered some changes since DVBv1. Sync them with the
current API header files.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:56 -03:00
Mauro Carvalho Chehab
4cde378b3b [media] DocBook/audio.xml: match section ID's with the reference links
Make sure that both audio.h.xml and audio.xml will match the same names.
This way, it is now possible to identify API spec gaps:

Error: no ID for constraint linkend: AUDIO_CONTINUE.
Error: no ID for constraint linkend: AUDIO_GET_PTS.
Error: no ID for constraint linkend: AUDIO_BILINGUAL_CHANNEL_SELECT.

While here, fix the cut-and-paste description error on AUDIO_SET_KARAOKE.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:55 -03:00
Mauro Carvalho Chehab
d9d73416ed [media] DocBook: Add the other DVB API header files
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:55 -03:00
Mauro Carvalho Chehab
446c18fcfd [media] DocBook/dvbproperty.xml: Better name the ISDB-T layers
In order to improve the DVB index, replace the title to a
better name.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:55 -03:00
Mauro Carvalho Chehab
ff74b8ee52 [media] DocBook/dvbproperty.xml: Add Satellite standards
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:53 -03:00
Mauro Carvalho Chehab
76f9a69aae [media] DocBook/dvbproperty.xml: Add ATSC standard
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:50 -03:00
Mauro Carvalho Chehab
e7da0ae3c8 [media] DocBook/dvbproperty.xml: Add Cable standards
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:50 -03:00
Mauro Carvalho Chehab
3272c3ec21 [media] DocBook: Finish synchronizing the frontend API
Remove the remaining:
	Error: no ID for constraint linkend:

With this patch, the dvb frontend API matches the current
dvb core implementation.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:49 -03:00
Mauro Carvalho Chehab
994e262e3e [media] DocBook/dvbproperty.xml: Document the terrestrial delivery systems
Instead of repeating duplicate parameters to each delivery system,
just add a section for each specific delivery system, showing
what's applicable to each case. This helps userspace app developers
to know what DVB parameters are applicable to each delivery system.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:48 -03:00
Mauro Carvalho Chehab
df2692a6dd [media] DocBook/frontend.xml: Recomend the usage of the new API
The old way of setting delivery system parameters were to use
an union with specific per-system parameters. However, as newer
delivery systems required more data, the structure size weren't
enough to fit. So, recomend using the DVBS2API instead.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:45 -03:00
Mauro Carvalho Chehab
17d8bb061f [media] DocBook/dvbproperty.xml: Reorganize the parameters
Put the parameters at the sequencial order as they appear inside
the frontend.h header.

TODO: fix the per-standard section, to reflect the parameters
that should actually be used for each transmission system type.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:45 -03:00
Mauro Carvalho Chehab
db8d0ea705 [media] DocBook/dvbproperty.xml: Use links for all parameters
Instead of adding a program listing, just add there all parameters.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:44 -03:00
Mauro Carvalho Chehab
04a92077d2 [media] DocBook/dvbproperty.xml: Document the remaining S2API parameters
There were lots of DVB S2API parameters that were never documented.
Let's add a definition for all of them, based on what's currently
used inside the core and the drivers.

The description here is not complete nor perfect, so patches
improving it are welcome.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:44 -03:00
Mauro Carvalho Chehab
0be153efb1 [media] DocBook/frontend.xml: Better describe the frontend parameters
Update the DVB parameter structs to reflect VSB modulation and
improve a few descriptions.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:44 -03:00
Mauro Carvalho Chehab
6cb77a85aa [media] DocBook/frontend.xml: add references for some missing info
The frontend.h.xml now references to the main document. However,
several references are missed.

Links the trivial ones with the corresponding API descriptions.

While here, updates the main API to reflect the API improvements.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:43 -03:00
Mauro Carvalho Chehab
0969ec1834 [media] DocBook/frontend.xml: Correlate dvb delivery systems
As the DVB API provides two ways to specify the delivery
systems, correlate both ways into a table.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:41 -03:00
Mauro Carvalho Chehab
95e61e0188 [media] DocBook/frontend.xml: Link DVB S2API parameters
Associate the frontend.h DVB S2API parmeters to the corresponding
documentation at the spec.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:41 -03:00
Mauro Carvalho Chehab
d5dc2dee50 [media] DocBook/frontend.xml: Better document fe_type_t
The fe_type_t documentation was incomplete and not linked to the
dvb/frontend.h.xml. Properly document it.

Also, drop a note that newer formats are only supported via
FE_GET_PROPERTY/FE_GET_SET_PROPERTY ioctls.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:41 -03:00
Mauro Carvalho Chehab
98a2b60d89 [media] DocBook/Makefile: add references for several dvb structures
With this change, it is now possible to discover the gap between
the API defined inside include/dvb/frontend.h and the one documented
into the specs.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:41 -03:00
Jean-François Moine
157e03f2d3 [media] v4l: Documentation about the JPGL pixel format
The JPG-Light, AKA Pegasus Lossless JPEG, is used in Divio webcams based
on NW 800/801/802 chips.

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:40 -03:00
Davide Ferri
8d009a0c41 [media] dib0700: add initial code for PCTV 340e by Davide Ferri
This is initial code written by Davide Ferri for the PCTV 340e, including
a new xc4000 driver.  I am checking in all the code unmodified, and making
no assertions about its quality (other than confirming it compiles).

[mchehab@redhat.com: rebased on the top of the current tree]
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Davide Ferri <davidef1986@gmail.com>
Cc: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:25 -03:00
Sakari Ailus
82f7b59cb8 [media] v4l: Document EACCES in VIDIOC_[GS]_CTRL and VIDIOC_{G, S, TRY}_EXT_CTRLS
VIDIOC_S_CTRL and VIDIOC_S_EXT_CTRLS return EACCES when setting a read-only
control VIDIOC_TRY_EXT_CTRLS when trying a read-only control and
VIDIOC_G_CTRL and VIDIOC_G_EXT_CTRLS when getting a write-only control.
Document this.

Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:19 -03:00
Mauro Carvalho Chehab
58b0ed25b6 [media] Update several cardlists
Several cardlist entries are missed. Fix them by running some
script magic (about the same scripts we used to have at -hg tree).

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:16 -03:00
Mauro Carvalho Chehab
4266129964 [media] DocBook: Move all media docbook stuff into its own directory
This patch addresses several issues pointed by Randy Dunlap
<rdunlap@xenotime.net> at changeset ece722c:

- In the generated index.html file, "media" is listed first, but it
  should be listed in alphabetical order, not first.

- The generated files are (hidden) in .tmpmedia/

- The link from the top-level index.html file to "media" is to
  media/index.html, but the file is actually in .tmpmedia/media/index.html

- Please build docs with and without using "O=builddir" and test that.

- Would it be possible for media to have its own Makefile instead of
  merging into this one?

Due to the way cleandocs target works, I had to rename the media DocBook
to media_api, otherwise cleandocs would remove the /media directory.

Thanks-to: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:05 -03:00
Mauro Carvalho Chehab
04893043ae [media] DocBook: Add rules to auto-generate some media docbook
Auto-generate the videodev2.h.xml,frontend.h.xml and the indexes.

Some logic at the Makefile helps us to identify when a symbol is missing,
like for example:

Error: no ID for constraint linkend: V4L2-PIX-FMT-JPGL.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27 17:52:01 -03:00
Linus Torvalds
919d25a710 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86. reboot: Make Dell Latitude E6320 use reboot=pci
  x86, doc only: Correct real-mode kernel header offset for init_size
  x86: Disable AMD_NUMA for 32bit for now
2011-07-20 15:33:59 -07:00
Linus Torvalds
af8a927c8b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: remove resize from unsupported features list
2011-07-15 11:03:49 -07:00
Linus Torvalds
5d7d5d9332 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
  slip: fix wrong SLIP6 ifdef-endif placing
  natsemi: fix another dma-debug report
  sctp: ABORT if receive, reassmbly, or reodering queue is not empty while closing socket
  net: Fix default in docs for tcp_orphan_retries.
  hso: fix a use after free condition
  net/natsemi: Fix module parameter permissions
  XFRM: Fix memory leak in xfrm_state_update
  sctp: Enforce retransmission limit during shutdown
  mac80211: fix TKIP replay vulnerability
  mac80211: fix ie memory allocation for scheduled scans
  ssb: fix init regression of hostmode PCI core
  rtlwifi: rtl8192cu: Add new USB ID for Netgear WNA1000M
  ath9k: Fix tx throughput drops for AR9003 chips with AES encryption
  carl9170: add NEC WL300NU-AG usbid
  cfg80211: fix deadlock with rfkill/sched_scan by adding new mutex
  ath5k: fix incorrect use of drvdata in PCI suspend/resume code
  ath5k: fix incorrect use of drvdata in sysfs code
  Bluetooth: Fix memory leak under page timeouts
  Bluetooth: Fix regression with incoming L2CAP connections
  Bluetooth: Fix hidp disconnect deadlocks and lost wakeup
  ...
2011-07-13 13:51:32 -07:00
Ryusuke Konishi
3a36199114 nilfs2: remove resize from unsupported features list
Resize feature was supported by the commit 4e33f9eab0 but it was not
reflected to the list of unsupported features in nilfs2.txt file.
This updates the list to fix discrepancy.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2011-07-13 16:08:59 +09:00
Darren Hart
11e48feebe x86, doc only: Correct real-mode kernel header offset for init_size
The real-mode kernel header init_size field is located at 0x260 per the field
listing in th e"REAL-MODE KERNEL HEADER" section. It is listed as 0x25c in
the "DETAILS OF HEADER FIELDS" section, which overlaps with pref_address.
Correct the details listing to 0x260.

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Link: http://lkml.kernel.org/r/541cf88e2dfe5b8186d8b96b136d892e769a68c1.1310441260.git.dvhart@linux.intel.com
CC: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-07-12 20:39:11 -07:00
Linus Torvalds
5adaf851d2 Documentation/Changes: remove some really obsolete text
That file harkens back to the days of the big 2.4 -> 2.6 version jump,
and was based even then on older versions.  Some of it is just obsolete,
and Jesper Juhl points out that it talks about kernel versions 2.6 and
should be updated to 3.0.

Remove some obsolete text, and re-phrase some other to not be 2.6-specific.

Reported-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-11 16:48:38 -07:00
Linus Torvalds
c15000b40d Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
  [media] msp3400: fill in v4l2_tuner based on vt->type field
  [media] tuner-core.c: don't change type field in g_tuner or g_frequency
  [media] cx18/ivtv: fix g_tuner support
  [media] tuner-core: power up tuner when called with s_power(1)
  [media] v4l2-ioctl.c: check for valid tuner type in S_HW_FREQ_SEEK
  [media] tuner-core: simplify the standard fixup
  [media] tuner-core/v4l2-subdev: document that the type field has to be filled in
  [media] v4l2-subdev.h: remove unused s_mode tuner op
  [media] feature-removal-schedule: change in how radio device nodes are handled
  [media] bttv: fix s_tuner for radio
  [media] pvrusb2: fix g/s_tuner support
  [media] v4l2-ioctl.c: prefill tuner type for g_frequency and g/s_tuner
  [media] tuner-core: fix tuner_resume: use t->mode instead of t->type
  [media] tuner-core: fix s_std and s_tuner
2011-07-11 16:43:27 -07:00
Linus Torvalds
145628130b Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
  hp-wmi: fix use after free
  dell-laptop - using buffer without mutex_lock
  Revert: "dell-laptop: Toggle the unsupported hardware killswitch"
  platform-drivers-x86: set backlight type to BACKLIGHT_PLATFORM
  thinkpad-acpi: handle HKEY 0x4010, 0x4011 events
  drivers/platform/x86: Fix memory leak
  thinkpad-acpi: handle some new HKEY 0x60xx events
  acer-wmi: fix bitwise bug when set device state
  acer-wmi: Only update rfkill status for associated hotkey events
2011-07-11 12:47:09 -07:00
Muthu Kumar
0580181784 Documentation/spinlocks.txt: Remove reference to sti()/cli()
Since we removed sti()/cli() and related, how about removing it from
Documentation/spinlocks.txt?

Signed-off-by: Muthukumar R <muthur@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-11 12:45:04 -07:00
Linus Torvalds
2169ce92ca Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: conditional resource-reallocation through kernel parameter pci=realloc
2011-07-10 07:28:51 -07:00
Ram Pai
f483d3923d PCI: conditional resource-reallocation through kernel parameter pci=realloc
Multiple attempts to dynamically reallocate pci resources have
unfortunately lead to regressions. Though we continue to fix the
regressions and fine tune the dynamic-reallocation behavior, we have not
reached a acceptable state yet.
    
This patch provides a interim solution. It disables dynamic reallocation
by default, but adds the ability to enable it through pci=realloc kernel
command line parameter.
    
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-07-08 15:49:20 -07:00
David S. Miller
06b8fc5d30 net: Fix default in docs for tcp_orphan_retries.
Default should be listed at 8 instead of 7.

Reported-by: Denys Fedoryshchenko <denys@visp.net.lb>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-08 09:31:31 -07:00
David Howells
c902ce1bfb FS-Cache: Add a helper to bulk uncache pages on an inode
Add an FS-Cache helper to bulk uncache pages on an inode.  This will
only work for the circumstance where the pages in the cache correspond
1:1 with the pages attached to an inode's page cache.

This is required for CIFS and NFS: When disabling inode cookie, we were
returning the cookie and setting cifsi->fscache to NULL but failed to
invalidate any previously mapped pages.  This resulted in "Bad page
state" errors and manifested in other kind of errors when running
fsstress.  Fix it by uncaching mapped pages when we disable the inode
cookie.

This patch should fix the following oops and "Bad page state" errors
seen during fsstress testing.

  ------------[ cut here ]------------
  kernel BUG at fs/cachefiles/namei.c:201!
  invalid opcode: 0000 [#1] SMP
  Pid: 5, comm: kworker/u:0 Not tainted 2.6.38.7-30.fc15.x86_64 #1 Bochs Bochs
  RIP: 0010: cachefiles_walk_to_object+0x436/0x745 [cachefiles]
  RSP: 0018:ffff88002ce6dd00  EFLAGS: 00010282
  RAX: ffff88002ef165f0 RBX: ffff88001811f500 RCX: 0000000000000000
  RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000282
  RBP: ffff88002ce6dda0 R08: 0000000000000100 R09: ffffffff81b3a300
  R10: 0000ffff00066c0a R11: 0000000000000003 R12: ffff88002ae54840
  R13: ffff88002ae54840 R14: ffff880029c29c00 R15: ffff88001811f4b0
  FS:  00007f394dd32720(0000) GS:ffff88002ef00000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  CR2: 00007fffcb62ddf8 CR3: 000000001825f000 CR4: 00000000000006e0
  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  Process kworker/u:0 (pid: 5, threadinfo ffff88002ce6c000, task ffff88002ce55cc0)
  Stack:
   0000000000000246 ffff88002ce55cc0 ffff88002ce6dd58 ffff88001815dc00
   ffff8800185246c0 ffff88001811f618 ffff880029c29d18 ffff88001811f380
   ffff88002ce6dd50 ffffffff814757e4 ffff88002ce6dda0 ffffffff8106ac56
  Call Trace:
   cachefiles_lookup_object+0x78/0xd4 [cachefiles]
   fscache_lookup_object+0x131/0x16d [fscache]
   fscache_object_work_func+0x1bc/0x669 [fscache]
   process_one_work+0x186/0x298
   worker_thread+0xda/0x15d
   kthread+0x84/0x8c
   kernel_thread_helper+0x4/0x10
  RIP  cachefiles_walk_to_object+0x436/0x745 [cachefiles]
  ---[ end trace 1d481c9af1804caa ]---

I tested the uncaching by the following means:

 (1) Create a big file on my NFS server (104857600 bytes).

 (2) Read the file into the cache with md5sum on the NFS client.  Look in
     /proc/fs/fscache/stats:

	Pages  : mrk=25601 unc=0

 (3) Open the file for read/write ("bash 5<>/warthog/bigfile").  Look in proc
     again:

	Pages  : mrk=25601 unc=25601

Reported-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-and-Tested-by: Suresh Jayaraman <sjayaraman@suse.de>
cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-07 13:21:56 -07:00
Hans Verkuil
6293698277 [media] feature-removal-schedule: change in how radio device nodes are handled
Radio devices have weird side-effects when used with combined TV/radio
tuners and the V4L2 spec is ambiguous on how it should work. This results
in inconsistent driver behavior which makes life hard for everyone.

Be more strict in when and how the switch between radio and tv mode
takes place and make sure all drivers behave the same.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-07 15:03:47 -03:00