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
With modern hard drives, reading 64k takes roughly the same time as
reading a 4k block. So request readahead for adjacent inode table
blocks to reduce the time it takes when iterating over directories
(especially when doing this in htree sort order) in a cold cache case.
With this patch, the time it takes to run "git status" on a kernel
tree after flushing the caches via "echo 3 > /proc/sys/vm/drop_caches"
is reduced by 21%.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Replace the no longer working links and email address in the
documentation and in source code.
Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Dave Jones <davej@redhat.com>
Describe the sysfs files that were introduced in the ibmaem driver.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (33 commits)
V4L/DVB (9103): em28xx: HVR-900 B3C0 - fix audio clicking issue
V4L/DVB (9099): em28xx: Add detection for K-WORLD DVB-T 310U
V4L/DVB (9092): gspca: Bad init values for sonixj ov7660.
V4L/DVB (9080): gspca: Add a delay after writing to the sonixj sensors.
V4L/DVB (9075): gspca: Bad check of returned status in i2c_read() spca561.
V4L/DVB (9053): fix buffer overflow in uvc-video
V4L/DVB (9043): S5H1420: Fix size of shadow-array to avoid overflow
V4L/DVB (9037): Fix support for Hauppauge Nova-S SE
V4L/DVB (9029): Fix deadlock in demux code
V4L/DVB (8979): sms1xxx: Add new USB product ID for Hauppauge WinTV MiniStick
V4L/DVB (8978): sms1xxx: fix product name for Hauppauge WinTV MiniStick
V4L/DVB (8967): Use correct XC3028L firmware for AMD ATI TV Wonder 600
V4L/DVB (8963): s2255drv field count fix
V4L/DVB (8961): zr36067: Fix RGBR pixel format
V4L/DVB (8960): drivers/media/video/cafe_ccic.c needs mm.h
V4L/DVB (8958): zr36067: Return proper bytes-per-line value
V4L/DVB (8957): zr36067: Restore the default pixel format
V4L/DVB (8955): bttv: Prevent NULL pointer dereference in radio_open
V4L/DVB (8935): em28xx-cards: Remove duplicate entry (EM2800_BOARD_KWORLD_USB2800)
V4L/DVB (8933): gspca: Disable light frquency for zc3xx cs2102 Kokom.
...
Correct firmware type to MTS
Correct audio routing for composite/s-video
Add DVB-T detection.
This patch uses the eeprom hash method for detection as the vendor/product
ids are also used for the DIGIVOX_AD. This may be a clone of the same
product. Explanatory text has been added prior to the hask look-up in
anticipation that it may help others.
The following has been tested to work:
Analogue TV (PAL-I)
Composite In
DVB-T (UK Crystal Palace)
USB AUDIO
The following has not been tested but probably works:
S-Video In
Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The "Documentation" section of this file mentions that when an interface
change is made, I should be CCed with info about the change (so that
man-pages can document it). Additionally request that this info be CCed
to the new linux-api@vger.kernel.org list.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mention that patches that change the kernel-userland interface should
be CCed to the new list linux-api@vger.kernel.org.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Correct copy-paste problem: CDROMCLOSETRAY is about closing the tray,
not opening it.
Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Make the example code consistent with changed API.
Signed-off-by: Marin Mitov <mitov@ispp.bas.bg>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Provide summary ABI docs about the /sys/class/gpio files.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There is no description of bit 4 of coredump_filter in the
documentation. This patch adds it.
Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If all the cpus in a cpuset are offlined, the tasks in it will be moved to
the nearest ancestor with non-empty cpus.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Jackson <pj@sgi.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In the 2.6.27 circle ->fasync lost the BKL, and the last remaining
->open variant that takes the BKL is also gone. ->get_sb and ->kill_sb
didn't have BKL forever, so updated the entries while we're at that.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (98 commits)
V4L/DVB (8881): gspca: After 'while (retry--) {...}', retry will be -1 but not 0.
V4L/DVB (8880): PATCH: Fix parents on some webcam drivers
V4L/DVB (8877): b2c2 and bt8xx: udelay to mdelay
V4L/DVB (8876): budget: udelay changed to mdelay
V4L/DVB (8874): gspca: Adjust hstart for sn9c103/ov7630 and update usb-id's.
V4L/DVB (8873): gspca: Bad image offset with rev012a of spca561 and adjust exposure.
V4L/DVB (8872): gspca: Bad image format and offset with rev072a of spca561.
V4L/DVB (8870): gspca: Fix dark room problem with sonixb.
V4L/DVB (8869): gspca: Move the Sonix webcams with TAS5110C1B from sn9c102 to gspca.
V4L/DVB (8868): gspca: Support for vga modes with sif sensors in sonixb.
V4L/DVB (8844): dabusb_fpga_download(): fix a memory leak
V4L/DVB (8843): tda10048_firmware_upload(): fix a memory leak
V4L/DVB (8842): vivi_release(): fix use-after-free
V4L/DVB (8840): dib0700: add basic support for Hauppauge Nova-TD-500 (84xxx)
V4L/DVB (8839): dib0700: add comment to identify 35th USB id pair
V4L/DVB (8837): dvb: fix I2C adapters name size
V4L/DVB (8835): gspca: Same pixfmt as the sn9c102 driver and raw Bayer added in sonixb.
V4L/DVB (8834): gspca: Have a bigger buffer for sn9c10x compressed images.
V4L/DVB (8833): gspca: Cleanup the sonixb code.
V4L/DVB (8832): gspca: Bad pixelformat of vc0321 webcams.
...
* 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6:
acer-wmi: remove debugfs entries upon unloading
ACPI: Avoid bogus timeout about SMbus check
fujitsu-laptop: fix regression for P8010 in 2.6.27-rc
ACPI: Make Len Brown the ACPI maintainer again
ACPI: thinkpad-acpi: wan radio control is not experimental
PNPACPI: ignore the producer/consumer bit for extended IRQ descriptors
acpi: add checking for NULL early param
ACPI: Fix typo in "Disable MWAIT via DMI on broken Compal board"
ACPI: Fix now signed module parameter.
ACPI: Change package length error to warning
ACPI: Fix now signed module parameter.
-Add usb id for 093a:2624 (pac7302)
-Report some controls to userspace with 7302 only, as they are 7302 only
-Add gain and exposure controls
-Add autogain
-Fix 7302 imaged being mirrored by default
Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Patch adapted from a patch to gspcav1 made by the google microdia group.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Update Documentation/filesystems/proc.txt: it describes the file
auto_msgmni intoduced to enable/disable msgmni automatic recomputing upon
memory add/remove (see thread http://lkml.org/lkml/2008/7/4/27). Also
added a description for msgmni (this filex is only listed in
Documentation/sysctl/kernel.txt).
Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Update the location of the NTFS homepage in several files.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
With the new firmware infrastructure in 2.6.27, some files are generated and shouldn't be
diffed; add these 2 to the "dontdiff" file
Signed-off-by: Arjan van de Ven <arjan@Linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The WWAN radio control has been working well for over three years,
and is no longer experimental.
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: Update documentation to remind users to update mke2fs.conf
ext4: Fix small file fragmentation
ext4: Initialize writeback_index to 0 when allocating a new inode
ext4: make sure ext4_has_free_blocks returns 0 for ENOSPC
ext4: journal credit fix for the delayed allocation's writepages() function
ext4: Rework the ext4_da_writepages() function
ext4: journal credits reservation fixes for DIO, fallocate
ext4: journal credits reservation fixes for extent file writepage
ext4: journal credits calulation cleanup and fix for non-extent writepage
ext4: Fix bug where we return ENOSPC even though we have plenty of inodes
ext4: don't try to resize if there are no reserved gdt blocks left
ext4: Use ext4_discard_reservations instead of mballoc-specific call
ext4: Fix ext4_dx_readdir hash collision handling
ext4: Fix delalloc release block reservation for truncate
ext4: Fix potential truncate BUG due to i_prealloc_list being non-empty
ext4: Handle unwritten extent properly with delayed allocation
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[libata] pata_it821x: fix warning
libata: Fix a large collection of DMA mode mismatches
ahci: sis controllers actually can do PMP
pata_via: clean up recent tf_load changes
libata: restore SControl on detach
libata: use ata_link_printk() when printing SError
libata: always do follow-up SRST if hardreset returned -EAGAIN
libata: fix EH action overwriting in ata_eh_reset()
sata_mv: add the Gen IIE flag to the SoC devices.
ata_piix: IDE Mode SATA patch for Intel Ibex Peak DeviceIDs
ahci: RAID mode SATA patch for Intel Ibex Peak DeviceIDs
sata_mv: don't issue two DMA commands concurrently
libata: implement no[hs]rst force params
Implement force params nohrst, nosrst and norst. This is to work
around reset related problems and ease debugging.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Hi,
This patch adds SubmitChecklist translated into Japanese to
Documentation/ja_JP directory.
The translated SubmitChecklist has already been reviewed by JF project.
SubmitChecklist is one of the important policy documents.
So, I would like to merge into 2.6.27.
Signed-off-by: Takenori Nagano <t-nagano@ah.jp.nec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
"bootmem_debug" is not mentioned in kernel-parameters.txt. Recently I
had to use that kernel option and I think it should be documented.
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (22 commits)
[SCSI] ibmvfc: Driver version 1.0.2
[SCSI] ibmvfc: Add details to async event log
[SCSI] ibmvfc: Sanitize response lengths
[SCSI] ibmvfc: Fix for lost async events
[SCSI] ibmvfc: Fixup host state during reinit
[SCSI] ibmvfc: Fix another hang on module removal
[SCSI] ibmvscsi: Fixup desired DMA value for shared memory partitions
[SCSI] megaraid_sas: remove sysfs dbg_lvl world writeable permissions
[SCSI] qla2xxx: Update version number to 8.02.01-k7.
[SCSI] qla2xxx: Explicitly tear-down vports during PCI remove_one().
[SCSI] qla2xxx: Reference proper ha during SBR handling.
[SCSI] qla2xxx: Set npiv_supported flag for FCoE HBAs.
[SCSI] qla2xxx: Don't leak SG-DMA mappings while aborting commands.
[SCSI] qla2xxx: Correct vport-state management issues during ISP-ABORT.
[SCSI] qla2xxx: Correct synchronization of software/firmware fcport states.
[SCSI] scsi_dh: Initialize lun_state in check_ownership()
[SCSI] scsi_dh: Do not use scsilun in rdac hardware handler
[SCSI] megaraid_sas: version and Documentation Update
[SCSI] megaraid_sas: add new controllers (0x78 0x79)
[SCSI] megaraid_sas: add the shutdown DCMD cmd to driver shutdown routine
...
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (94 commits)
pkt_sched: Prevent livelock in TX queue running.
Revert "pkt_sched: Add BH protection for qdisc_stab_lock."
Revert "pkt_sched: Protect gen estimators under est_lock."
pkt_sched: remove bogus block (cleanup)
nf_nat: use secure_ipv4_port_ephemeral() for NAT port randomization
netfilter: ctnetlink: sleepable allocation with spin lock bh
netfilter: ctnetlink: fix sleep in read-side lock section
netfilter: ctnetlink: fix double helper assignation for NAT'ed conntracks
netfilter: ipt_addrtype: Fix matching of inverted destination address type
dccp: Fix panic caused by too early termination of retransmission mechanism
pkt_sched: Don't hold qdisc lock over qdisc_destroy().
pkt_sched: Add lockdep annotation for qdisc locks
pkt_sched: Never schedule non-root qdiscs.
removed unused #include <version.h>
rt2x00: Fix txdone_entry_desc_flags
b43: Fix for another Bluetooth Coexistence SPROM Programming error for BCM4306
mac80211: remove kdoc references to IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
p54u: reset skb's data/tail pointer on requeue
p54: move p54_vdcf_init to the right place.
iwlwifi: fix printk newlines
...
Guard rfkill controllers attached to a rfkill class against state changes
after class suspend has been issued.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
* master.kernel.org:/home/rmk/linux-2.6-arm: (38 commits)
[ARM] 5191/1: ARM: remove CVS keywords
[ARM] pxafb: fix the warning of incorrect lccr when lcd_conn is specified
[ARM] pxafb: add flag to specify output format on LDD pins when base is RGBT16
[ARM] pxafb: fix the incorrect configuration of GPIO77 as ACBIAS for TFT LCD
[ARM] 5198/1: PalmTX: PCMCIA fixes
[ARM] Fix a pile of broken watchdog drivers
[ARM] update mach-types
[ARM] 5196/1: fix inline asm constraints for preload
[ARM] 5194/1: update .gitignore
[ARM] add proc-macros.S include to proc-arm940 and proc-arm946
[ARM] 5192/1: ARM TLB: add v7wbi_{possible,always}_flags to {possible,always}_tlb_flags
[ARM] 5193/1: Wire up missing syscalls
[ARM] traps: don't call undef hook functions with spinlock held
[ARM] 5183/2: Provide Poodle LoCoMo GPIO names
[ARM] dma-mapping: provide sync_range APIs
[ARM] dma-mapping: improve type-safeness of DMA translations
[ARM] Kirkwood: instantiate the orion_spi driver in the platform code
[ARM] prevent crashing when too much RAM installed
[ARM] Kirkwood: Instantiate mv_xor driver
[ARM] Orion: Instantiate mv_xor driver for 5182
...
Signed-off-by: Bo Yang <bo.yang@lsi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* 'linux-next' of git://git.infradead.org/~dedekind/ubifs-2.6: (29 commits)
UBIFS: xattr bugfixes
UBIFS: remove unneeded check
UBIFS: few commentary fixes
UBIFS: fix budgeting request alignment in xattr code
UBIFS: improve arguments checking in debugging messages
UBIFS: always set i_generation to 0
UBIFS: correct spelling of "thrice".
UBIFS: support splice_write
UBIFS: minor tweaks in commit
UBIFS: reserve more space for index
UBIFS: print pid in dump function
UBIFS: align inode data to eight
UBIFS: improve budgeting checks
UBIFS: correct orphan deletion order
UBIFS: fix typos in comments
UBIFS: do not union creat_sqnum and del_cmtno
UBIFS: optimize deletions
UBIFS: increment commit number earlier
UBIFS: remove another unneeded function parameter
UBIFS: remove unneeded function parameter
...
Minor documentation update to reflect the current full name of the power
management hardware interface and reflows the text a bit.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
