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* V4L/DVB (8725): drx397xD.c sparse annotationsHarvey Harrison2008-10-122-9/+9
| | | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8724): dvb: drx397xD: checkpatch.pl cleanupsFelipe Balbi2008-10-121-118/+124
| | | | | | | | | | | | | | | | | | | | This driver sure needs some rework. For now, let's try to clean it up a bit before start reimplementing anything. checkpatch.pl still not happy with this driver after this patch, but the most annoying errors are gone, comments now use C-style only, labels are well placed and some other minor fixes. Some more clean up patches will come as I work on this driver. Please review it carefully. Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Henk Vergonet <henk.vergonet@gmail.com> [mchehab@infradead.org: Manually fixed some conflicts with a previous patch] Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8695): usbvideo: add proper error check and add release functionHans Verkuil2008-10-121-1/+6
| | | | | Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8691): i2c-id: remove obsolete SAB3036 driver IDHans Verkuil2008-10-121-1/+0
| | | | | Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8690): tuner-3036: remove driverHans Verkuil2008-10-123-222/+0
| | | | | | | | | | | | This driver is for VERY old i2c-over-parallel port teletext receiver boxes. Rather then spending effort on converting this driver to V4L2, and since it is extremely unlikely that anyone still uses one of these devices, it was decided to drop it (after discussing this as well with the original author, Phil Blundell). Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Phil Blundell <philb@gnu.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8689): dpc7146: remove dpc7146 demonstration board driverHans Verkuil2008-10-123-424/+0
| | | | | | | | | | | | | | Old driver for the dpc7146 demonstration board that is no longer relevant. The last time this was tested on actual hardware was probably around 2002. Since this is a driver for a demonstration board the decision was made (after discussing this with the original author, Michael Hunold) to remove it rather than spending a lot of effort continually updating this driver to stay in sync with the latest internal V4L2 or I2C API. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Michael Hunold <hunold@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8687): soc-camera: Move .power and .reset from soc_camera host to ↵Stefan Herbrechtsmeier2008-10-128-37/+71
| | | | | | | | | | | | | sensor driver Make .power and .reset callbacks per camera instead of per host, also move their invocation to camera drivers. .arch/arm/mach-pxa/include/mach/camera.h | 2 - Signed-off-by: Stefan Herbrechtsmeier <hbmeier@hni.uni-paderborn.de> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8686): mt9m111: style cleanupGuennadi Liakhovetski2008-10-122-45/+43
| | | | | | | | Fix a typo in Kconfig, simplify error checking, further minor cleanup. Tested-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Guennadi Liakhovetski <g.iakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8685): mt9m001, mt9v022: Simplify return code checkingGuennadi Liakhovetski2008-10-122-26/+26
| | | | | | | | i2c_smbus_write_word_data() returns 0 or a negative error, hence no need to check for "> 0". Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8684): Add support for Micron MT9M111 camera.Robert Jarzmik2008-10-123-0/+967
| | | | | | | | | | | | | | | Adds support for Micron MT9M111 camera chip, with basic features : - view rectangle configurable - some output formats (bayer8, bayer10, rgb565, rgb555, ycbycr) - autoexposure - only highpower mode context used (ie. context B) create mode 100644 drivers/media/video/mt9m111.c Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8683): Add Micron mt9m111 chip ID in V4L2 identifiersRobert Jarzmik2008-10-121-0/+1
| | | | | | Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8680): saa7134-core.c: fix warningAlexander Beregalov2008-10-121-26/+26
| | | | | | | | | drivers/media/video/saa7134/saa7134-core.c:366: warning: 'saa7134_buffer_requeue' defined but not used Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8658): lgs8gl5: fix build warningsMichael Krufky2008-10-121-28/+2
| | | | | | | | | | | | | | | | | | Fix the following build warnings: lgs8gl5.c: In function 'lgs8gl5_read_reg': lgs8gl5.c:95: warning: unused variable 'j' lgs8gl5.c: In function 'lgs8gl5_update_alt_reg': lgs8gl5.c:135: warning: unused variable 'j' lgs8gl5.c: In function 'lgs8gl5_read_ber': lgs8gl5.c:300: warning: unused variable 'state' lgs8gl5.c: In function 'lgs8gl5_read_ucblocks': lgs8gl5.c:332: warning: unused variable 'state' lgs8gl5.c: At top level: lgs8gl5.c:181: warning: 'lgs8gl5_set_inversion' defined but not used Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8657): cxusb: add lgs8gl5 and support for Magic-Pro DMB-TH usb stickTimothy Lee2008-10-126-0/+821
| | | | | | | | | | | | | | | Add support for Magic-Pro DMB-TH usb stick. DMB-TH is the HDTV broadcast standard used in Hong Kong and China. [...] I've also attached a second patch against the dvb-apps repository which adds a DMB-TH scan file for Hong Kong. Since the ProHDTV stick contains a DMB-TH decoder (lgs8gl5) onboard, it outputs MPEG-TS to the PC. Signed-off-by: Timothy Lee <timothy.lee@siriushk.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8656): fix DVB_FE_CUSTOMISE for DVB_DIB7000P and DVB_TUNER_DIB0070 ↵Michael Krufky2008-10-123-8/+45
| | | | | | | | | with dvb-usb-cxusb Allow dvb-usb-cxusb to be built without dib7000p or dib0070 selected Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8655): cxusb: fix checkpatch warnings & errorsMichael Krufky2008-10-121-12/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following checkpatch.pl errors and warnings: ERROR: do not use assignment in if condition 117: FILE: linux/drivers/media/dvb/dvb-usb/cxusb.c:819: + if ((adap->fe = dvb_attach(dib7000p_attach, ERROR: switch and case should be at the same indent 155: FILE: linux/drivers/media/dvb/dvb-usb/cxusb.c:857: + switch (band) { + case BAND_VHF: offset = 950; break; + case BAND_UHF: + default: offset = 550; break; WARNING: line over 80 characters 169: FILE: linux/drivers/media/dvb/dvb-usb/cxusb.c:871: + struct i2c_adapter *tun_i2c = dib7000p_get_i2c_master(adap->fe, DIBX000_I2C_INTERFACE_TUNER, 1); WARNING: line over 80 characters 213: FILE: linux/drivers/media/dvb/dvb-usb/cxusb.c:1342: +static struct dvb_usb_device_properties cxusb_bluebird_dualdig4_rev2_properties = { WARNING: line over 80 characters 226: FILE: linux/drivers/media/dvb/dvb-usb/cxusb.c:1355: + .size_of_priv = sizeof(struct dib0700_adapter_state), total: 2 errors, 3 warnings, 266 lines checked Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Cc: Anton Blanchard <anton@samba.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8654): cxusb: add support for DViCO FusionHDTV DVB-T Dual Digital 4 ↵Anton Blanchard2008-10-124-1/+211
| | | | | | | | | | | | | | | | | | | | | | (rev 2) Add support for revision 2 of the DViCO FusionHDTV DVB-T Dual Digital 4 which has new tuners and demodulators (2 x DIB7070p). With this patch both DVB reception and IR works. The dib7000p driver currently hardwires the output mode to OUTMODE_MPEG2_SERIAL regardless of what we ask for. Modify it to allow OUTMODE_MPEG2_PAR_GATED_CLK to be set. Longer term we should remove the check completely and set the output mode correctly in all the callers. Add Kconfig bits to ensure the dib7000p and dib0070 modules are enabled. It would be nice to only do this for the !DVB_FE_CUSTOMISE case, but this is what the other DIB7070 module does (there are a number of module dependencies in the attach code). Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8649): v4l2: add AAC bitrate controlHans Verkuil2008-10-122-1/+5
| | | | | | | | If you can select AAC as audio encoder, then you should also be able to set the bitrate. Add this missing control. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8646): cx23885: Convert framework to use a single tuner callback ↵Steven Toth2008-10-123-32/+18
| | | | | | | | | function. Code reduction. Tuner callback now assumes that tsport is passed as the void arg. Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8645): Support IR remote on FusionHDTV DVB-T Dual ExpressSteven Toth2008-10-121-0/+3
| | | | | | | | | From Chris Pascoe <c.pascoe@itee.uq.edu.au> Support IR remote on FusionHDTV DVB-T Dual Express Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8644): Add support for DViCO FusionHDTV DVB-T Dual ExpressSteven Toth2008-10-124-0/+60
| | | | | | | | | Add support for the DViCO FusionHDTV DVB-T Dual Express card, based on work by Chris Pascoe and Stephen Backway. Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8643): Switch Hauppauge HVR1400 and HVR1500 to common cx23885 tuner ↵Steven Toth2008-10-123-33/+18
| | | | | | | | | | | callback The Hauppauge HVR1400 and HVR1500 can now use the common cx23885 tuner callback. Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8642): cx23885: Factor out common cx23885 tuner callbackSteven Toth2008-10-123-11/+15
| | | | | | | | | | | Tuners currently hook different things to the private pointer in their callback function. Longer term we should make that private pointer consistent, but for now separate out the guts of the cx23885 tuner callback so we can reuse it. Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8641): arv: fix compilation errors/warningsHans Verkuil2008-10-121-0/+1
| | | | | | | | - add PCI dependency for btcx - fix compile errors (doesn't like ';' at the end of a #if 0) Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8640): saa6752hs: add PMT table for AC3Hans Verkuil2008-10-121-13/+50
| | | | | | | | The PMT table for AC3 audio is different. Thanks to Dmitry Belimov for providing the table data. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8639): saa6752hs: cleanup and add AC-3 supportHans Verkuil2008-10-124-103/+194
| | | | | | | | | Cleaned up the saa6752hs i2c driver. Add AC-3 support. Add VIDIOC_CHIP_IDENT support. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8637): v4l2: add v4l2_ctrl_query_menu_valid_items support functionHans Verkuil2008-10-122-1/+24
| | | | | | | | | | | v4l2_ctrl_query_menu_valid_items() makes it easy to handle control menus that have a lot of invalid 'holes'. For example, many MPEG encoders only support a limited subset of audio bitrates. In that case a driver can specify an array listing the set of valid bitrates and pass that to this function. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8636): v4l2: add v4l2_ctrl_get_name control support function.Hans Verkuil2008-10-122-50/+60
| | | | | | | | | Add function that returns the control name. Allows this to be used in places where the normal v4l2_ctrl_query_fill() function cannot be used (e.g. uvc). Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8635): v4l: add AC-3 audio support to the MPEG Encoding APIHans Verkuil2008-10-122-5/+60
| | | | | | | | Some models of the saa6752hs support AC-3. Extend the API with the necessary controls for AC-3. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8634): v4l2: extend MPEG Encoding API with AVC and AACJanne Grunau2008-10-123-9/+16
| | | | | | | | | | Adds Advanced Audio Coding (AAC) and MPEG-4 Advanced Video Coding (AVC/H.264) as audio/video codecs to the extended controls API. Updates cx2341x driver to the new values. Signed-off-by: Janne Grunau <j@jannau.net> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8630): First mxb cleanup phaseHans Verkuil2008-10-124-302/+155
| | | | | Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8628): bttv: Add support for Encore ENLTV2-FMMauro Carvalho Chehab2008-10-126-8/+140
| | | | | | | | Thanks to Sistema Fenix (http://www.sistemafenix.com.br/) and CDI Brasil (www.cdibrasil.com.br/) for sponsoring this development. Signed-off-by: Gilberto <gilberto@sistemafenix.com.br> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (8628a): Remove duplicated includeMauro Carvalho Chehab2008-10-121-1/+0
| | | | | | Removes duplicated #include <v4l2-ioctl.h> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
* V4L/DVB (8627): Fix mute on bttv driverMauro Carvalho Chehab2008-10-121-0/+5
| | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8626): Add support for TCL tuner MF02GIP-5N-EMauro Carvalho Chehab2008-10-124-0/+26
| | | | | | | | | Thanks to Sistema Fenix (http://www.sistemafenix.com.br/) and CDI Brasil (www.cdibrasil.com.br/) for sponsoring this development. Signed-off-by: Gilberto <gilberto@sistemafenix.com.br> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8625): saa7134: Add NEC prococol IR decoding capabilityMauro Carvalho Chehab2008-10-122-6/+139
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the capability of decoding NEC protocol, received via GPIO18 line. This GPIO port can trigger saa7134 IRQ. A future improvement would be to make it a little more generic to work also with GPIO16 line. A pure IRQ code didn't work, since some delays were introduced on the tests we did. A possible approach would be to use polling at a rate of 2.5 ms or less. If a new code were taken, a code similar to nec_task() could be used. However, this would add an extra overhead to kernel, and will consume more power. Due to that, we took an hybrid approach: an IRQ upper half to trigger when a new key is received and a bottom half to convert pulse-distance into a keycode. The bottom half is polling based, to improve performance. During the bottom half proccess, GPIO18 IRQ line is disabled, preventing IRQ reentrancy and improving performance a little bit. Thanks to Sistema Fenix (http://www.sistemafenix.com.br/) for sponsoring this development. Signed-off-by: Gilberto <gilberto@sistemafenix.com.br> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8613): v4l: move BKL down to the driver level.Hans Verkuil2008-10-1226-25/+146
| | | | | | | | | | | The BKL is now moved from the video_open function in v4l2-dev.c to the various drivers. It seems about a third of the drivers already has a lock of some sort protecting the open(), another third uses video_exclusive_open (yuck!) and the last third required adding the BKL in their open function. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8561): make ivtv_claim_stream() staticAdrian Bunk2008-10-122-6/+1
| | | | | | | | ivtv_claim_stream() can now become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8560): replace __FUNCTION__ with __func__Alexander Beregalov2008-10-122-18/+18
| | | | | | | v4l/drx397xD: replace __FUNCTION__ with __func__ Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB: follow lspci device/vendor styleBjorn Helgaas2008-10-1210-12/+12
| | | | | | | | Use "[%04x:%04x]" for PCI vendor/device IDs to follow the format used by lspci(8). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8554): media/video/Kconfig: cosmetic changes and convert select ↵Mauro Carvalho Chehab2008-10-121-60/+58
| | | | | | | | | | | | | | into depends on It seems cosmetically better to let USB drivers be the last one. Also, two SOC drivers were using select, instead of depends on SOC_CAMERA. Since select has some drawbacks when checking for dependencies, convert those two into depends on. Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* V4L/DVB (8553): media/video/Kconfig: get rid of a selectMauro Carvalho Chehab2008-10-121-2/+1
| | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* Merge branch 'for_linus' of ↵Linus Torvalds2008-10-1151-2533/+2581
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (43 commits) ext4: Rename ext4dev to ext4 ext4: Avoid double dirtying of super block in ext4_put_super() Update ext4 MAINTAINERS file Hook ext4 to the vfs fiemap interface. generic block based fiemap implementation ocfs2: fiemap support vfs: vfs-level fiemap interface ext4: fix xattr deadlock jbd2: Fix buffer head leak when writing the commit block ext4: Add debugging markers that can be used by systemtap jbd2: abort instead of waiting for nonexistent transaction ext4: fix initialization of UNINIT bitmap blocks ext4: Remove old legacy block allocator ext4: Use readahead when reading an inode from the inode table ext4: Improve the documentation for ext4's /proc tunables ext4: Combine proc file handling into a single set of functions ext4: move /proc setup and teardown out of mballoc.c ext4: Don't use 'struct dentry' for internal lookups ext4/jbd2: Avoid WARN() messages when failing to write to the superblock ext4: use percpu data structures for lg_prealloc_list ...
| * ext4: Rename ext4dev to ext4Theodore Ts'o2008-10-1013-88/+123
| | | | | | | | | | | | | | | | The ext4 filesystem is getting stable enough that it's time to drop the "dev" prefix. Also remove the requirement for the TEST_FILESYS flag. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * ext4: Avoid double dirtying of super block in ext4_put_super()Andi Kleen2008-10-061-2/+0
| | | | | | | | | | | | | | | | | | | | While reading code I noticed that ext4_put_super() dirties the superblock bh twice. It is always done in ext4_commit_super() too. Remove the redundant dirty operation. Should be a nop semantically. Signed-off-by: Andi Kleen <ak@linux.intel.com>
| * Update ext4 MAINTAINERS fileTheodore Ts'o2008-10-061-2/+3
| | | | | | | | | | | | | | | | The ext4 entry was copied from ext3 and was never correct. Update it so that Theodore Ts'o is listed as the maintainer, and point the website to http://ext4.wiki.kernel.org. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| * Hook ext4 to the vfs fiemap interface.Eric Sandeen2008-10-075-2/+271
| | | | | | | | | | | | | | | | | | | | ext4_ext_walk_space() was reinstated to be used for iterating over file extents with a callback; it is used by the ext4 fiemap implementation. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: linux-ext4@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org
| * generic block based fiemap implementationJosef Bacik2008-10-038-0/+143
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Any block based fs (this patch includes ext3) just has to declare its own fiemap() function and then call this generic function with its own get_block_t. This works well for block based filesystems that will map multiple contiguous blocks at one time, but will work for filesystems that only map one block at a time, you will just end up with an "extent" for each block. One gotcha is this will not play nicely where there is hole+data after the EOF. This function will assume its hit the end of the data as soon as it hits a hole after the EOF, so if there is any data past that it will not pick that up. AFAIK no block based fs does this anyway, but its in the comments of the function anyway just in case. Signed-off-by: Josef Bacik <jbacik@redhat.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: linux-fsdevel@vger.kernel.org
| * ocfs2: fiemap supportMark Fasheh2008-10-035-62/+306
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Plug ocfs2 into ->fiemap. Some portions of ocfs2_get_clusters() had to be refactored so that the extent cache can be skipped in favor of going directly to the on-disk records. This makes it easier for us to determine which extent is the last one in the btree. Also, I'm not sure we want to be caching fiemap lookups anyway as they're not directly related to data read/write. Signed-off-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: ocfs2-devel@oss.oracle.com Cc: linux-fsdevel@vger.kernel.org
| * vfs: vfs-level fiemap interfaceMark Fasheh2008-10-084-0/+465
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Basic vfs-level fiemap infrastructure, which sets up a new ->fiemap inode operation. Userspace can get extent information on a file via fiemap ioctl. As input, the fiemap ioctl takes a struct fiemap which includes an array of struct fiemap_extent (fm_extents). Size of the extent array is passed as fm_extent_count and number of extents returned will be written into fm_mapped_extents. Offset and length fields on the fiemap structure (fm_start, fm_length) describe a logical range which will be searched for extents. All extents returned will at least partially contain this range. The actual extent offsets and ranges returned will be unmodified from their offset and range on-disk. The fiemap ioctl returns '0' on success. On error, -1 is returned and errno is set. If errno is equal to EBADR, then fm_flags will contain those flags which were passed in which the kernel did not understand. On all other errors, the contents of fm_extents is undefined. As fiemap evolved, there have been many authors of the vfs patch. As far as I can tell, the list includes: Kalpak Shah <kalpak.shah@sun.com> Andreas Dilger <adilger@sun.com> Eric Sandeen <sandeen@redhat.com> Mark Fasheh <mfasheh@suse.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: linux-api@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org
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