GitHub/mt8127/android_kernel_alcatel_ttab.git
18 years ago[PARISC] Add os_id_to_string helper
Kyle McMartin [Sun, 25 Jun 2006 16:58:57 +0000 (16:58 +0000)]
[PARISC] Add os_id_to_string helper

Add a helper to asm/pdc.h to translate OS_ID values to strings
and use it in the pdc_stable driver.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] OS_ID_LINUX == 0x0006
Kyle McMartin [Wed, 21 Jun 2006 19:27:29 +0000 (19:27 +0000)]
[PARISC] OS_ID_LINUX == 0x0006

We were assigned an OS_ID of 0x0006. Consistently use OS_ID_LINUX
instead of using the magic number. Also update the OS_ID_ defines in
asm/pdc.h to reflect this.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Ensure Space ID hashing is turned off
Kyle McMartin [Fri, 16 Jun 2006 22:20:00 +0000 (18:20 -0400)]
[PARISC] Ensure Space ID hashing is turned off

Check PDC_CACHE to see if spaceid hashing is turned on, and fail to
boot if that is the case.

However, some old machines do not implement the PDC_CACHE_RET_SPID
firmware call, so continue to boot if the call fails because of
PDC_BAD_OPTION (but fail in all other error returns).

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Match show_cache_info with reality
Kyle McMartin [Wed, 14 Jun 2006 20:26:25 +0000 (20:26 +0000)]
[PARISC] Match show_cache_info with reality

show_cache_info and struct pdc_cache_cf were out of sync with
published documentation. Fix the reporting of cache associativity
and update the pdc_cache_cf bitfields to match documentation.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Remove unused macro fixup_branch in syscall.S
Kyle McMartin [Sat, 17 Jun 2006 17:53:43 +0000 (17:53 +0000)]
[PARISC] Remove unused macro fixup_branch in syscall.S

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Add is_compat_task() helper
Kyle McMartin [Fri, 16 Jun 2006 19:10:02 +0000 (19:10 +0000)]
[PARISC] Add is_compat_task() helper

... And convert signal.c and ptrace.c to use it instead of open
coded equivalents.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Update Thibaut Varene's CREDITS entry
Thibaut Varene [Sun, 7 May 2006 10:54:28 +0000 (04:54 -0600)]
[PARISC] Update Thibaut Varene's CREDITS entry

Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Reduce data footprint in pdc_stable.c
Thibaut Varene [Fri, 5 May 2006 00:43:34 +0000 (18:43 -0600)]
[PARISC] Reduce data footprint in pdc_stable.c

No code change - reduce data footprint.

Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] pdc_stable version 0.30
Thibaut Varene [Fri, 5 May 2006 00:43:34 +0000 (18:43 -0600)]
[PARISC] pdc_stable version 0.30

pdc_stable v0.30:

This patch introduces 3 more files to the /sys/firmware/stable tree:
- diagnostic, which contains a cryptic hex string
- osdep1, a 16 bytes os-dependent storage area always available
- osdep2, another os-dependent storage area which existence/size depends
on hversion.

This patch also adds code to setup the "Linux" signature in stable
storage. That is to say that starting with this patch, the kernel will
now sign its OSID (0x0006, thx LaMont) in Stable Storage upon boot,
whether pdc_stable is enabled or not.

Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Work around machines which do not support chassis warnings
Thibaut Varene [Thu, 4 May 2006 15:29:32 +0000 (09:29 -0600)]
[PARISC] Work around machines which do not support chassis warnings

pdc_chassis v0.05:

Some machines seems not to implement Chassis warn support. Work around these.
Also cleanup a bit of the code.

Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] PDC_CHASSIS is implemented on all machines
Thibaut Varene [Wed, 3 May 2006 23:27:35 +0000 (17:27 -0600)]
[PARISC] PDC_CHASSIS is implemented on all machines

This patch removes a limitation of the original code, so that CHASSIS
codes can be sent to all machines. On machines with a LCD panel, this
code displays "INI" during bootup, "RUN" when the system is booted and
running, "FLT" when a panic occurs, etc.

This part of the code can be enabled/disabled through CONFIG_PDC_CHASSIS

This patch also adds minimalistic support for Chassis warnings, through
a proc entry '/proc/chassis', which will reflect the warnings status (PSU
or fans failure when they happen, NVRAM battery level and temperature
thresholds overflows).

This part of the code can be enabled/disabled through CONFIG_PDC_CHASSIS_WARN

Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Remove unconditional #define PIC in syscall macros
Carlos O'Donell [Wed, 21 Jun 2006 03:43:52 +0000 (03:43 +0000)]
[PARISC] Remove unconditional #define PIC in syscall macros

Signed-off-by: Carlos O'Donell <carlos@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Use MFIA in current_text_addr on pa2.0 processors
Kyle McMartin [Fri, 19 May 2006 20:18:17 +0000 (20:18 +0000)]
[PARISC] Use MFIA in current_text_addr on pa2.0 processors

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Remove dead function pc_in_user_space
Kyle McMartin [Thu, 25 May 2006 16:22:30 +0000 (16:22 +0000)]
[PARISC] Remove dead function pc_in_user_space

This code has been crufting up the file without any use for quite
a long time, so let's kill it.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Test ioc_needs_fdc variable instead of open coding
Kyle McMartin [Tue, 30 May 2006 17:50:29 +0000 (17:50 +0000)]
[PARISC] Test ioc_needs_fdc variable instead of open coding

Some debugging code in sba_iommu.c should be testing ioc_needs_fdc,
not directly testing boot_cpu_data.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Fix gcc 4.1 warnings in sba_iommu.c
Grant Grundler [Thu, 11 May 2006 06:31:31 +0000 (00:31 -0600)]
[PARISC] Fix gcc 4.1 warnings in sba_iommu.c

Clean up gcc 4.1 warnings noted by Joel Soete.
Kyle McMartin gets kudos for pointing out the issues.
Matthew Wilcox noticed sba_iommu was using open coded versions
of (read|write)X.

Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Use FIXUP_BRANCH_CLOBBER to asm clobber list
Carlos O'Donell [Sat, 22 Apr 2006 20:47:21 +0000 (14:47 -0600)]
[PARISC] Use FIXUP_BRANCH_CLOBBER to asm clobber list

Joel Soete noticed correctly that the fixup's clobbers must be listed
as the ASM clobbers. FIXUP_BRANCH in unaligned.c has a new macro which
lists all the clobbers in the fixup, we use this throughout the file
to simplify the process of listing clobbers in the future.

A missing "r1" clobber is added to our uaccess.h for the 64-bit
__put_kernel_asm. Interestingly this is a pretty serious bug since gcc
generates pretty good use of r1 as a temporary and the uses of
__put_kernel_asm are varied and dangerous if r1 is scratched during
an invalid write.

Signed-off-by: Joel Soete <soete.joel@tiscali.be>
Signed-off-by: Carlos O'Donell <carlos@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Whitespace clean up in asm/pgtable.h
Kyle McMartin [Fri, 21 Apr 2006 02:20:37 +0000 (02:20 +0000)]
[PARISC] Whitespace clean up in asm/pgtable.h

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years ago[PARISC] Ensure all ldcw uses are ldcw,co on pa2.0
Kyle McMartin [Sat, 22 Apr 2006 06:48:22 +0000 (00:48 -0600)]
[PARISC] Ensure all ldcw uses are ldcw,co on pa2.0

ldcw,co should always be used on pa2.0, otherwise the strict cache
width alignment requirement is not relaxed.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
18 years agoFix NFS2 compile error
Linus Torvalds [Sun, 25 Jun 2006 19:30:33 +0000 (12:30 -0700)]
Fix NFS2 compile error

Trond had apparently merged the same patch twice, causing a duplicate
include of the "internal.h" file, with resulting obvious confusion.

Tssk.  I'm the only one allowed to send out trees that don't even
compile! Who does this Trond guy think he is?

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] i386: Fix softirq accounting with 4K stacks
Björn Steinbrink [Sun, 25 Jun 2006 14:24:40 +0000 (16:24 +0200)]
[PATCH] i386: Fix softirq accounting with 4K stacks

Copy the softirq bits in preempt_count from the current context into the
hardirq context when using 4K stacks to make the softirq_count macro work
correctly and thereby fix softirq cpu time accounting.

Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years agoMerge git://git.linux-nfs.org/pub/linux/nfs-2.6
Linus Torvalds [Sun, 25 Jun 2006 17:54:14 +0000 (10:54 -0700)]
Merge git://git.linux-nfs.org/pub/linux/nfs-2.6

* git://git.linux-nfs.org/pub/linux/nfs-2.6: (51 commits)
  nfs: remove nfs_put_link()
  nfs-build-fix-99
  git-nfs-build-fixes
  Merge branch 'odirect'
  NFS: alloc nfs_read/write_data as direct I/O is scheduled
  NFS: Eliminate nfs_get_user_pages()
  NFS: refactor nfs_direct_free_user_pages
  NFS: remove user_addr, user_count, and pos from nfs_direct_req
  NFS: "open code" the NFS direct write rescheduler
  NFS: Separate functions for counting outstanding NFS direct I/Os
  NLM: Fix reclaim races
  NLM: sem to mutex conversion
  locks.c: add the fl_owner to nlm_compare_locks
  NFS: Display the chosen RPCSEC_GSS security flavour in /proc/mounts
  NFS: Split fs/nfs/inode.c
  NFS: Fix typo in nfs_do_clone_mount()
  NFS: Fix compile errors introduced by referrals patches
  NFSv4: Ensure that referral mounts bind to a reserved port
  NFSv4: A root pathname is sent as a zero component4
  NFSv4: Follow a referral
  ...

18 years agoMerge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb
Linus Torvalds [Sun, 25 Jun 2006 17:09:31 +0000 (10:09 -0700)]
Merge /pub/scm/linux/kernel/git/mchehab/v4l-dvb

* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (244 commits)
  V4L/DVB (4210b): git-dvb: tea575x-tuner build fix
  V4L/DVB (4210a): git-dvb versus matroxfb
  V4L/DVB (4209): Added some BTTV PCI IDs for newer boards
  Fixes some sync issues between V4L/DVB development and GIT
  V4L/DVB (4206): Cx88-blackbird: always set encoder height based on tvnorm->id
  V4L/DVB (4205): Merge tda9887 module into tuner.
  V4L/DVB (4203): Explicitly set the enum values.
  V4L/DVB (4202): allow selecting CX2341x port mode
  V4L/DVB (4200): Disable bitrate_mode when encoding mpeg-1.
  V4L/DVB (4199): Add cx2341x-specific control array to cx2341x.c
  V4L/DVB (4198): Avoid newer usages of obsoleted experimental MPEGCOMP API
  V4L/DVB (4197): Port new MPEG API to saa7134-empress with saa6752hs
  V4L/DVB (4196): Port cx88-blackbird to the new MPEG API.
  V4L/DVB (4193): Update cx2341x fw encoding API doc.
  V4L/DVB (4192): Use control helpers for saa7115, cx25840, msp3400.
  V4L/DVB (4191): Add CX2341X MPEG encoder module.
  V4L/DVB (4190): Add helper functions for control processing to v4l2-common.
  V4L/DVB (4189): Add videodev support for VIDIOC_S/G/TRY_EXT_CTRLS.
  V4L/DVB (4188): Add new MPEG control/ioctl definitions to videodev2.h
  V4L/DVB (4186): Add support for the DNTV Live! mini DVB-T card.
  ...

18 years agoFix PM_TRACE dependency: works only on 32-bit x86 for now
Linus Torvalds [Sun, 25 Jun 2006 17:04:15 +0000 (10:04 -0700)]
Fix PM_TRACE dependency: works only on 32-bit x86 for now

Not that x86-64 and other architecture support should be difficult to
add (trivial fixups to the data format and add the proper linker script
entry).

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fix race in idr code
Sonny Rao [Sun, 25 Jun 2006 12:49:34 +0000 (05:49 -0700)]
[PATCH] fix race in idr code

I ran into a bug where the kernel died in the idr code:

cpu 0x1d: Vector: 300 (Data Access) at [c000000b7096f710]
    pc: c0000000001f8984: .idr_get_new_above_int+0x140/0x330
    lr: c0000000001f89b4: .idr_get_new_above_int+0x170/0x330
    sp: c000000b7096f990
   msr: 800000000000b032
   dar: 0
 dsisr: 40010000
  current = 0xc000000b70d43830
  paca    = 0xc000000000556900
    pid   = 2022, comm = hwup
1d:mon> t
[c000000b7096f990c0000000000d2ad8 .expand_files+0x2e8/0x364 (unreliable)
[c000000b7096faa0c0000000001f8bf8 .idr_get_new_above+0x18/0x68
[c000000b7096fb20c00000000002a054 .init_new_context+0x5c/0xf0
[c000000b7096fbc0c000000000049dc8 .copy_process+0x91c/0x1404
[c000000b7096fcd0c00000000004a988 .do_fork+0xd8/0x224
[c000000b7096fdc0c00000000000ebdc .sys_clone+0x5c/0x74
[c000000b7096fe30c000000000008950 .ppc_clone+0x8/0xc

18 years ago[PATCH] update-devices.txt
Jan Engelhardt [Sun, 25 Jun 2006 12:49:33 +0000 (05:49 -0700)]
[PATCH] update-devices.txt

Update Documentation/devices.txt with a new version from the LANANA site
http://www.lanana.org/docs/device-list/devices-2.6+.txt

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] remove unlikely(sb) in prune_dcache
Hua Zhong [Sun, 25 Jun 2006 12:49:32 +0000 (05:49 -0700)]
[PATCH] remove unlikely(sb) in prune_dcache

likely profiling shows that the following is a miss.

After boot:
[+- ] Type | # True | # False | Function:Filename@Line
+unlikely |     1074|        0  prune_dcache()@:fs/dcache.c@409

After a bonnie++ run:
+unlikely |    66716|    19584  prune_dcache()@:fs/dcache.c@409

So remove it.

Signed-off-by: Hua Zhong <hzhong@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Fix "biovec-(256)" in /proc/slabinfo
Alexey Dobriyan [Sun, 25 Jun 2006 12:49:32 +0000 (05:49 -0700)]
[PATCH] Fix "biovec-(256)" in /proc/slabinfo

Stringify does what it was told to do.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Fix kdump Crash Kernel boot memory reservation for NUMA machines
Amul Shah [Sun, 25 Jun 2006 12:49:31 +0000 (05:49 -0700)]
[PATCH] Fix kdump Crash Kernel boot memory reservation for NUMA machines

This patch will fix a boot memory reservation bug that trashes memory on
the ES7000 when loading the kdump crash kernel.

The code in arch/x86_64/kernel/setup.c to reserve boot memory for the crash
kernel uses the non-numa aware "reserve_bootmem" function instead of the
NUMA aware "reserve_bootmem_generic".  I checked to make sure that no other
function was using "reserve_bootmem" and found none, except the ones that
had NUMA ifdef'ed out.

I have tested this patch only on an ES7000 with NUMA on and off (numa=off)
in a single (non-NUMA) and multi-cell (NUMA) configurations.

Signed-off-by: Amul Shah <amul.shah@unisys.com>
Looks-good-to: Vivek Goyal <vgoyal@in.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] s390: setup.c cleanup + build fix
Heiko Carstens [Sun, 25 Jun 2006 12:49:30 +0000 (05:49 -0700)]
[PATCH] s390: setup.c cleanup + build fix

Cleanup & fix 31 bit compilation:

  CC      arch/s390/kernel/setup.o
arch/s390/kernel/setup.c:83: error: initializer element is not computable at
                                    load time
arch/s390/kernel/setup.c:83: error: (near initialization for
                                    'code_resource.start')
Not sure which patch in the -mm tree breaks this, but since this can be
considered a cleanup it can be merged anyway.

Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] au1xxx: oss sound support for au1200
Domen Puncer [Sun, 25 Jun 2006 12:49:29 +0000 (05:49 -0700)]
[PATCH] au1xxx: oss sound support for au1200

au1550 ac97 driver works fine on au1200 too.

Comments at the top of file state this code is GPL, so lets
mark it as GPL too.

Signed-off-by: Domen Puncer <domen.puncer@ultra.si>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] parport: add to kernel-doc
Randy Dunlap [Sun, 25 Jun 2006 12:49:29 +0000 (05:49 -0700)]
[PATCH] parport: add to kernel-doc

Add parport interfaces to kernel-doc template.  Small doc.  cleanups in 2
parport source files.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] au1550_ac97: spin_unlock in error path
Domen Puncer [Sun, 25 Jun 2006 12:49:27 +0000 (05:49 -0700)]
[PATCH] au1550_ac97: spin_unlock in error path

Error paths didn't spin_unlock.

Signed-off-by: Domen Puncer <domen.puncer@ultra.si>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] ext2: cleanup: put_page and comment fix
Evgeniy Dushistov [Sun, 25 Jun 2006 12:49:27 +0000 (05:49 -0700)]
[PATCH] ext2: cleanup: put_page and comment fix

Things which force me think a little: why so?

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] pacct: none-delayed process accounting accumulation
KaiGai Kohei [Sun, 25 Jun 2006 12:49:26 +0000 (05:49 -0700)]
[PATCH] pacct: none-delayed process accounting accumulation

In current 2.6.17 implementation, signal_struct refered from task_struct is
used for per-process data structure.  The pacct facility also uses it as a
per-process data structure to store stime, utime, minflt, majflt.  But those
members are saved in __exit_signal().  It's too late.

For example, if some threads exits at same time, pacct facility has a
possibility to drop accountings for a part of those threads.  (see, the
following 'The results of original 2.6.17 kernel') I think accounting
information should be completely collected into the per-process data structure
before writing out an accounting record.

This patch fixes this matter.  Accumulation of stime, utime, minflt and majflt
are done before generating accounting record.

[mingo@elte.hu: fix acct_collect() siglock bug found by lockdep]
Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] pacct: avoidance to refer the last thread as a representation of the process
KaiGai Kohei [Sun, 25 Jun 2006 12:49:25 +0000 (05:49 -0700)]
[PATCH] pacct: avoidance to refer the last thread as a representation of the process

When pacct facility generate an 'ac_flag' field in accounting record, it
refers a task_struct of the thread which died last in the process.  But any
other task_structs are ignored.

Therefore, pacct facility drops ASU flag even if root-privilege operations are
used by any other threads except the last one.  In addition, AFORK flag is
always set when the thread of group-leader didn't die last, although this
process has called execve() after fork().

We have a same matter in ac_exitcode.  The recorded ac_exitcode is an exit
code of the last thread in the process.  There is a possibility this exitcode
is not the group leader's one.

18 years ago[PATCH] pacct: add pacct_struct to fix some pacct bugs.
KaiGai Kohei [Sun, 25 Jun 2006 12:49:24 +0000 (05:49 -0700)]
[PATCH] pacct: add pacct_struct to fix some pacct bugs.

The pacct facility need an i/o operation when an accounting record is
generated.  There is a possibility to wake OOM killer up.  If OOM killer is
activated, it kills some processes to make them release process memory
regions.

But acct_process() is called in the killed processes context before calling
exit_mm(), so those processes cannot release own memory.  In the results, any
processes stop in this point and it finally cause a system stall.

18 years ago[PATCH] Corrections to memory barrier doc
David Howells [Sun, 25 Jun 2006 12:49:22 +0000 (05:49 -0700)]
[PATCH] Corrections to memory barrier doc

Apply some small corrections to the memory barrier document, as contributed by:

Christoph Lameter <clameter@sgi.com>
Kirill Smelkov <kirr@mns.spb.ru>
Randy Dunlap <rdunlap@xenotime.net>

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] synclink_gt: add GT2 adapter support
Paul Fulghum [Sun, 25 Jun 2006 12:49:22 +0000 (05:49 -0700)]
[PATCH] synclink_gt: add GT2 adapter support

Add support for SyncLink GT2 adapter to driver.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fix synclink_gt diagnostics error reporting
Paul Fulghum [Sun, 25 Jun 2006 12:49:21 +0000 (05:49 -0700)]
[PATCH] fix synclink_gt diagnostics error reporting

Fix diagnostics error reporting that was being overwritten by incorrect use
of return codes from individual diagnostic functions.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] add synclink_gt crc return feature
Paul Fulghum [Sun, 25 Jun 2006 12:49:21 +0000 (05:49 -0700)]
[PATCH] add synclink_gt crc return feature

Add ability to return HDLC CRC to user application.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] add synclink_gt custom hdlc idle
Paul Fulghum [Sun, 25 Jun 2006 12:49:20 +0000 (05:49 -0700)]
[PATCH] add synclink_gt custom hdlc idle

Add custom HDLC idle pattern feature.

It allows the user to specify an arbitrary 8 or 16 bit repeating pattern on
the transmit data pin between HDLC frames.

In most cases the idle pattern is continuous ones or flags as supported by off
the shelf synchronous controllers and defined in the ISO3309 standard.  Some
applications (radio/satellite modems, connections to legacy military hardware)
require non-standard patterns.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] irda-usb printk fix
Andrew Morton [Sun, 25 Jun 2006 12:49:19 +0000 (05:49 -0700)]
[PATCH] irda-usb printk fix

drivers/net/irda/irda-usb.c: In function 'stir421x_patch_device':
drivers/net/irda/irda-usb.c:1108: warning: format '%u' expects type 'unsigned int', but argument 4 has type 'size_t'

Cc: Greg KH <greg@kroah.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kthread: move kernel-doc and put it into DocBook
Randy Dunlap [Sun, 25 Jun 2006 12:49:19 +0000 (05:49 -0700)]
[PATCH] kthread: move kernel-doc and put it into DocBook

Move kthread API kernel-doc from kthread.h to kthread.c & fix it.
Add kthread API to kernel-api DocBook.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] DMI: cleanup kernel-doc, add to DocBook
Randy Dunlap [Sun, 25 Jun 2006 12:49:18 +0000 (05:49 -0700)]
[PATCH] DMI: cleanup kernel-doc, add to DocBook

Add DMI interface functions to a new Firmware Interfaces chapter in the
kernel-api DocBook.  Clean up kernel-doc in drivers/firmware/dmi_scan.c.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Implement kasprintf
Jeremy Fitzhardinge [Sun, 25 Jun 2006 12:49:17 +0000 (05:49 -0700)]
[PATCH] Implement kasprintf

Implement kasprintf, a kernel version of asprintf.  This allocates the
memory required for the formatted string, including the trailing '\0'.
Returns NULL on allocation failure.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Fix bounds check in vsnprintf, to allow for a 0 size and NULL buffer
Jeremy Fitzhardinge [Sun, 25 Jun 2006 12:49:17 +0000 (05:49 -0700)]
[PATCH] Fix bounds check in vsnprintf, to allow for a 0 size and NULL buffer

This change allows callers to use a 0-byte buffer and a NULL buffer pointer
with vsnprintf, so it can be used to determine how large the resulting
formatted string will be.

Previously the code effectively treated a size of 0 as a size of 4G (on
32-bit systems), with other checks preventing it from actually trying to
emit the string - but the terminal \0 would still be written, which would
crash if the buffer is NULL.

This change changes the boundary check so that 'end' points to the putative
location of the terminal '\0', which is only written if size > 0.

vsnprintf still allows the buffer size to be set very large, to allow
unbounded buffer sizes (to implement sprintf, etc).

[akpm@osdl.org: fix long-vs-longlong confusion]
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] LED: add LED heartbeat trigger
Atsushi Nemoto [Sun, 25 Jun 2006 12:49:15 +0000 (05:49 -0700)]
[PATCH] LED: add LED heartbeat trigger

Add an LED trigger acts like a heart beat.  This can be used as a
replacement of CONFIG_HEARTBEAT code exists in some arch's timer code.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Cc: "Nish Aravamudan" <nish.aravamudan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] ktime/hrtimer: fix kernel-doc comments
Randy Dunlap [Sun, 25 Jun 2006 12:49:15 +0000 (05:49 -0700)]
[PATCH] ktime/hrtimer: fix kernel-doc comments

Fix kernel-doc formatting in ktime.h and hrtimer.[ch] files.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] reed-solomon: fix kernel-doc comments
Randy Dunlap [Sun, 25 Jun 2006 12:49:14 +0000 (05:49 -0700)]
[PATCH] reed-solomon: fix kernel-doc comments

Fix kernel-doc formatting in Reed-Solomon code.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel-doc: use Members for struct fields consistently
Randy Dunlap [Sun, 25 Jun 2006 12:49:14 +0000 (05:49 -0700)]
[PATCH] kernel-doc: use Members for struct fields consistently

kernel-doc struct fields should be consistently called "Members", not
"Arguments", so switch man-mode output to use "Members" like all of the
other formats do.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel-doc: don't use XML escapes in text or man output mode
Randy Dunlap [Sun, 25 Jun 2006 12:49:13 +0000 (05:49 -0700)]
[PATCH] kernel-doc: don't use XML escapes in text or man output mode

For kernel-doc output modes of text and man, do not use XML escapes for
less-than, greater-than, and ampersand characters.  I.e., leave the text
and man output clean and readable.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fix memory leak in rocketport rp_do_receive
Paul Fulghum [Sun, 25 Jun 2006 12:49:12 +0000 (05:49 -0700)]
[PATCH] fix memory leak in rocketport rp_do_receive

Fix memory leak caused by incorrect use of tty buffer facility.  tty
buffers are allocated but never processed by call to tty_flip_buffer_push
so they accumulate on the full buffer list.  Current code uses the buffers
as a temporary storage for data before passing it directly to the line
discipline.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Implement AT_SYMLINK_FOLLOW flag for linkat
Ulrich Drepper [Sun, 25 Jun 2006 12:49:11 +0000 (05:49 -0700)]
[PATCH] Implement AT_SYMLINK_FOLLOW flag for linkat

When the linkat() syscall was added the flag parameter was added in the
last minute but it wasn't used so far.  The following patch should change
that.  My tests show that this is all that's needed.

If OLDNAME is a symlink setting the flag causes linkat to follow the
symlink and create a hardlink with the target.  This is actually the
behavior POSIX demands for link() as well but Linux wisely does not do
this.  With this flag (which will most likely be in the next POSIX
revision) the programmer can choose the behavior, defaulting to the safe
variant.  As a side effect it is now possible to implement a
POSIX-compliant link(2) function for those who are interested.

  touch file
  ln -s file symlink

  linkat(fd, "symlink", fd, "newlink", 0)
    -> newlink is hardlink of symlink

  linkat(fd, "symlink", fd, "newlink", AT_SYMLINK_FOLLOW)
    -> newlink is hardlink of file

The value of AT_SYMLINK_FOLLOW is determined by the definition we already
use in glibc.

Signed-off-by: Ulrich Drepper <drepper@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] add "select GPIO_VR41XX" for TANBAC_TB0229
Yoichi Yuasa [Sun, 25 Jun 2006 12:49:11 +0000 (05:49 -0700)]
[PATCH] add "select GPIO_VR41XX" for TANBAC_TB0229

TANBAC_TB0229 requires GPIO_VR41XX.  This patch adds "select GPIO_VR41XX"
for TANBAC_TB0229.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] cpu hotplug: fix CPU_UP_CANCEL handling
Heiko Carstens [Sun, 25 Jun 2006 12:49:10 +0000 (05:49 -0700)]
[PATCH] cpu hotplug: fix CPU_UP_CANCEL handling

If a cpu hotplug callback fails on CPU_UP_PREPARE, all callbacks will be
called with CPU_UP_CANCELED.  A few of these callbacks assume that on
CPU_UP_PREPARE a pointer to task has been stored in a percpu array.  This
assumption is not true if CPU_UP_PREPARE fails and the following calls to
kthread_bind() in CPU_UP_CANCELED will cause an addressing exception
because of passing a NULL pointer.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fs: sys_poll with timeout -1 bug fix
Frode Isaksen [Sun, 25 Jun 2006 12:49:09 +0000 (05:49 -0700)]
[PATCH] fs: sys_poll with timeout -1 bug fix

If you do a poll() call with timeout -1, the wait will be a big number
(depending on HZ) instead of infinite wait, since -1 is passed to the
msecs_to_jiffies function.

Signed-off-by: Frode Isaksen <frode.isaksen@gmail.com>
Acked-by: Nishanth Aravamudan <nacc@us.ibm.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kthread: convert stop_machine into a kthread
Serge E. Hallyn [Sun, 25 Jun 2006 12:49:08 +0000 (05:49 -0700)]
[PATCH] kthread: convert stop_machine into a kthread

- Update stop_machine.c to spawn stop_machine as kthreads rather than the
  deprecated kernel_threads.

- Update stop_machine to use the more efficient kthread_bind() before
  running task in place of set_cpus_allowed() after.

[akpm@osdl.org: remove now-wrong set_cpus_allowed()]
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fix %s in affs_fill_super()
Al Viro [Sun, 25 Jun 2006 12:49:08 +0000 (05:49 -0700)]
[PATCH] fix %s in affs_fill_super()

%s is only valid if array is known to contain NUL or precision is given and
does not exceed the size of array.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] CCISS: tidy up product table indentation
Bjorn Helgaas [Sun, 25 Jun 2006 12:49:07 +0000 (05:49 -0700)]
[PATCH] CCISS: tidy up product table indentation

Make each one fit on a line so it's easier to read.  I re-ordered
COMPAQ_CISSC/0x4091, which was out of order.  I double-checked these, but it
would be good if you'd also check them to make sure I didn't miss any.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Jeff Garzik <jeff@garzik.org>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] CCISS: run through Lindent
Bjorn Helgaas [Sun, 25 Jun 2006 12:49:06 +0000 (05:49 -0700)]
[PATCH] CCISS: run through Lindent

cciss is full of inconsistent style ("for (" vs.  "for(", lines that end with
whitespace, lines beginning with a mix of spaces & tabs, etc).

This patch changes only whitespace.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] CCISS: remove parens around return values
Bjorn Helgaas [Sun, 25 Jun 2006 12:49:05 +0000 (05:49 -0700)]
[PATCH] CCISS: remove parens around return values

Typical Linux style is "return -EINVAL", not "return(-EINVAL)".

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] CCISS: fix a few spelling errors
Bjorn Helgaas [Sun, 25 Jun 2006 12:49:04 +0000 (05:49 -0700)]
[PATCH] CCISS: fix a few spelling errors

Fix a few spelling errors.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] CCISS: use ARRAY_SIZE without intermediates
Bjorn Helgaas [Sun, 25 Jun 2006 12:49:03 +0000 (05:49 -0700)]
[PATCH] CCISS: use ARRAY_SIZE without intermediates

It's easier to verify loop bounds if the array name is mentioned the for()
statement that steps through the array.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] CCISS: announce cciss%d devices with PCI address/IRQ/DAC info
Bjorn Helgaas [Sun, 25 Jun 2006 12:49:03 +0000 (05:49 -0700)]
[PATCH] CCISS: announce cciss%d devices with PCI address/IRQ/DAC info

We already print "cciss: using DAC cycles" or similar for every adapter found:
why not just identify the device we're talking about and include other useful
information?

Jeff Garzik <jeff@garzik.org>:

  Although this patch is correct, I would consider using dev_printk() rather
  than referencing pci_name() in printk() arguments.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] CCISS: request all PCI resources
Bjorn Helgaas [Sun, 25 Jun 2006 12:49:02 +0000 (05:49 -0700)]
[PATCH] CCISS: request all PCI resources

We should call pci_request_regions() to claim all resources the device
decodes.  Previously, we claimed only the I/O port range.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] CCISS: disable device when returning failure
Bjorn Helgaas [Sun, 25 Jun 2006 12:49:01 +0000 (05:49 -0700)]
[PATCH] CCISS: disable device when returning failure

If something fails after we call pci_enable_device(), we should call
pci_disable_device() before returning the failure.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Initramfs docs update
Rob Landley [Sun, 25 Jun 2006 12:49:00 +0000 (05:49 -0700)]
[PATCH] Initramfs docs update

New section on creating an external initramfs image using cpio (with
script), a warning about bad advice in the cpio man page, a bit of
debugging advice (hello world and rdinit=/bin/sh), and a few minor tweaks
to other parts of it.

Signed-off-by: Rob Landley <rob@landley.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kthread: convert smbiod
Serge E. Hallyn [Sun, 25 Jun 2006 12:49:00 +0000 (05:49 -0700)]
[PATCH] kthread: convert smbiod

Update smbiod to use kthread instead of deprecated kernel_thread.

[akpm@osdl.org: cleanup]
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kthread: update loop.c to use kthread
Serge E. Hallyn [Sun, 25 Jun 2006 12:48:59 +0000 (05:48 -0700)]
[PATCH] kthread: update loop.c to use kthread

Update loop.c to use a kthread instead of a deprecated kernel_thread for
loop devices.

[akpm@osdl.org: don't change the thread's name]
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel-doc for lib/crc*.c
Randy Dunlap [Sun, 25 Jun 2006 12:48:59 +0000 (05:48 -0700)]
[PATCH] kernel-doc for lib/crc*.c

Make kernel-doc corrections & additions to lib/crc*.c.  Add crc functions to
kernel-api.tmpl in DocBook.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel-doc for lib/cmdline.c
Randy Dunlap [Sun, 25 Jun 2006 12:48:58 +0000 (05:48 -0700)]
[PATCH] kernel-doc for lib/cmdline.c

Add a new chapter for kernel-lib functions to kernel-api.tmpl.  Add
lib/cmdline.c to the new kernel-lib chapter.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel-doc for lib/bitmap.c
Randy Dunlap [Sun, 25 Jun 2006 12:48:57 +0000 (05:48 -0700)]
[PATCH] kernel-doc for lib/bitmap.c

Make corrections/fixes to kernel-doc in lib/bitmap.c and include it in DocBook
template.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Remove needless checks in fs/9p/vfs_inode.c
Eric Sesterhenn [Sun, 25 Jun 2006 12:48:57 +0000 (05:48 -0700)]
[PATCH] Remove needless checks in fs/9p/vfs_inode.c

coverity found two needless checks in vfs_inode.c (cid #1165 and #1164)
In both cases inode is always NULL when we goto error; either because it
is still initialized to NULL or is set to NULL explicitly. This patch
simply removes these checks to save some code.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@lanl.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] ide-floppy: fix debug-only syntax error
Randy Dunlap [Sun, 25 Jun 2006 12:48:56 +0000 (05:48 -0700)]
[PATCH] ide-floppy: fix debug-only syntax error

Fix debug-only printk syntax error.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] kernel-doc: warn on malformed function docs.
Randy Dunlap [Sun, 25 Jun 2006 12:48:55 +0000 (05:48 -0700)]
[PATCH] kernel-doc: warn on malformed function docs.

When the verbose (-v) option is used with scripts/kernel-doc, this option
reports when the kernel-doc format is malformed and apparently contains
function description lines before function parameters.  In these cases, the
kernel-doc script will print something like: Warning(filemap.c:335):
contents before sections

I have fixed the problems in mm/filemap.c and added lots of kernel-doc to
that file (posted to the linux-mm mailing list Mon.  2006-June-12).

The real goal (as requested by Andrew Morton) is to allow the short
function description to be more than one line long.  This patch is both a
kernel-doc checker and a tool en route to that goal.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fuse: scramble lock owner ID
Miklos Szeredi [Sun, 25 Jun 2006 12:48:55 +0000 (05:48 -0700)]
[PATCH] fuse: scramble lock owner ID

VFS uses current->files pointer as lock owner ID, and it wouldn't be
prudent to expose this value to userspace.  So scramble it with XTEA using
a per connection random key, known only to the kernel.  Only one direction
needs to be implemented, since the ID is never sent in the reverse
direction.

The XTEA algorithm is implemented inline since it's simple enough to do so,
and this adds less complexity than if the crypto API were used.

Thanks to Jesper Juhl for the idea.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fuse: add request interruption
Miklos Szeredi [Sun, 25 Jun 2006 12:48:54 +0000 (05:48 -0700)]
[PATCH] fuse: add request interruption

Add synchronous request interruption.  This is needed for file locking
operations which have to be interruptible.  However filesystem may implement
interruptibility of other operations (e.g.  like NFS 'intr' mount option).

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fuse: rename the interrupted flag
Miklos Szeredi [Sun, 25 Jun 2006 12:48:53 +0000 (05:48 -0700)]
[PATCH] fuse: rename the interrupted flag

Rename the 'interrupted' flag to 'aborted', since it indicates exactly that,
and next patch will introduce an 'interrupted' flag for a

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fuse: ensure FLUSH reaches userspace
Miklos Szeredi [Sun, 25 Jun 2006 12:48:52 +0000 (05:48 -0700)]
[PATCH] fuse: ensure FLUSH reaches userspace

All POSIX locks owned by the current task are removed on close().  If the
FLUSH request resulting initiated by close() fails to reach userspace, there
might be locks remaining, which cannot be removed.

The only reason it could fail, is if allocating the request fails.  In this
case use the request reserved for RELEASE, or if that is currently used by
another FLUSH, wait for it to become available.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fuse: add POSIX file locking support
Miklos Szeredi [Sun, 25 Jun 2006 12:48:52 +0000 (05:48 -0700)]
[PATCH] fuse: add POSIX file locking support

This patch adds POSIX file locking support to the fuse interface.

This implementation doesn't keep any locking state in kernel.  Unlocking on
close() is handled by the FLUSH message, which now contains the lock owner id.

Mandatory locking is not supported.  The filesystem may enfoce mandatory
locking in userspace if needed.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fuse: add control filesystem
Miklos Szeredi [Sun, 25 Jun 2006 12:48:51 +0000 (05:48 -0700)]
[PATCH] fuse: add control filesystem

Add a control filesystem to fuse, replacing the attributes currently exported
through sysfs.  An empty directory '/sys/fs/fuse/connections' is still created
in sysfs, and mounting the control filesystem here provides backward
compatibility.

Advantages of the control filesystem over the previous solution:

  - allows the object directory and the attributes to be owned by the
    filesystem owner, hence letting unpriviled users abort the
    filesystem connection

  - does not suffer from module unload race

[akpm@osdl.org: fix this fs for recent dhowells depredations]
[akpm@osdl.org: fix 64-bit printk warnings]
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fuse: no backgrounding on interrupt
Miklos Szeredi [Sun, 25 Jun 2006 12:48:50 +0000 (05:48 -0700)]
[PATCH] fuse: no backgrounding on interrupt

Don't put requests into the background when a fatal interrupt occurs while the
request is in userspace.  This removes a major wart from the implementation.

Backgrounding of requests was introduced to allow breaking of deadlocks.
However now the same can be achieved by aborting the filesystem through the
'abort' sysfs attribute.

This is a change in the interface, but should not cause problems, since these
kinds of deadlocks never happen during normal operation.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] fuse: use MISC_MAJOR
Jan Engelhardt [Sun, 25 Jun 2006 12:48:49 +0000 (05:48 -0700)]
[PATCH] fuse: use MISC_MAJOR

The following patches add POSIX file locking to the fuse interface.

Additional changes ralated to this are:

  - asynchronous interrupt of requests by SIGKILL no longer supported

  - separate control filesystem, instead of using sysfs objects

  - add support for synchronously interrupting requests

Details are documented in Documentation/filesystems/fuse.txt throughout the
patches.

This patch:

Have fuse.h use MISC_MAJOR rather than a hardcoded '10'.

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Another couple of alterations to the memory barrier doc
David Howells [Sun, 25 Jun 2006 12:48:49 +0000 (05:48 -0700)]
[PATCH] Another couple of alterations to the memory barrier doc

Make another couple of alterations to the memory barrier document following
suggestions by Alan Stern and in co-operation with Paul McKenney:

 (*) Rework the point of introduction of memory barriers and the description
     of what they are to reiterate why they're needed.

 (*) Modify a statement about the use of data dependency barriers to note that
     other barriers can be used instead (as they imply DD-barriers).

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-By: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] More !tty cleanups in drivers/char
Eric Sesterhenn [Sun, 25 Jun 2006 12:48:48 +0000 (05:48 -0700)]
[PATCH] More !tty cleanups in drivers/char

Another bunch of checks in the char drivers .put_char() and .write()
routines, where tty can never be NULL.  This patch removes these checks to
save some code.  Coverity choked at those with the following bug ids:

isicom.c  767, 766
specialix.c 773, 774
synclink_cs.c 779, 781
synclink_gt.c 784, 785
synclinkmp.c 784, 785

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Cc: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Update contact information in CREDITS
Niels Kristian Bech Jensen [Sun, 25 Jun 2006 12:48:47 +0000 (05:48 -0700)]
[PATCH] Update contact information in CREDITS

Update my contact information in CREDITS.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] autofs4: need to invalidate children on tree mount expire
Ian Kent [Sun, 25 Jun 2006 12:48:47 +0000 (05:48 -0700)]
[PATCH] autofs4: need to invalidate children on tree mount expire

I've found a case where invalid dentrys in a mount tree, waiting to be
cleaned up by d_invalidate, prevent the expected expire.

In this case dentrys created during a lookup for which a mount fails or has
no entry in the mount map contribute to the d_count of the parent dentry.
These dentrys may not be invalidated prior to comparing the interanl usage
count of valid autofs dentrys against the dentry d_count which makes a
mount tree appear busy so it doesn't expire.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Clean up char/esp.c
Eric Sesterhenn [Sun, 25 Jun 2006 12:48:46 +0000 (05:48 -0700)]
[PATCH] Clean up char/esp.c

coverity choked at another two !tty checks, in places where tty can
never be NULL. Since it removes some code we should remove
these checks. (Coverity ids #763,#762)

Signed-off-by Eric Sesterhenn <snakebyte@gmx.de>

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Cyclades Cleanup
Eric Sesterhenn [Sun, 25 Jun 2006 12:48:45 +0000 (05:48 -0700)]
[PATCH] Cyclades Cleanup

coverity choked at two !tty checks, in places where tty can never be NULL.
Since it removes some code we should remove these checks.  (Coverity ids
#763,#762)

[akpm@osdl.org: even cleaner!]
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] Link error when futexes are disabled on 64bit architectures
Anton Blanchard [Sun, 25 Jun 2006 12:48:44 +0000 (05:48 -0700)]
[PATCH] Link error when futexes are disabled on 64bit architectures

If futexes are disabled we fail to link on ppc64.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] RCU documentation: self-limiting updates and call_rcu()
Paul E. McKenney [Sun, 25 Jun 2006 12:48:44 +0000 (05:48 -0700)]
[PATCH] RCU documentation: self-limiting updates and call_rcu()

An update to the RCU documentation calling out the
self-limiting-update-rate advantages of synchronize_rcu(), and describing
how to use call_rcu() in a way that results in self-limiting updates.
Self-limiting updates are important to avoiding RCU-induced OOM in face of
denial-of-service attacks.

Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] readahead: backoff on I/O error
Wu Fengguang [Sun, 25 Jun 2006 12:48:43 +0000 (05:48 -0700)]
[PATCH] readahead: backoff on I/O error

Backoff readahead size exponentially on I/O error.

Michael Tokarev <mjt@tls.msk.ru> described the problem as:

[QUOTE]
Suppose there's a CD-rom with a scratch/etc, one sector is unreadable.
In order to "fix" it, one have to read it and write to another CD-rom,
or something.. or just ignore the error (if it's just a skip in a video
stream).  Let's assume the unreadable block is number U.

But current behavior is just insane.  An application requests block
number N, which is before U. Kernel tries to read-ahead blocks N..U.
Cdrom drive tries to read it, re-read it.. for some time.  Finally,
when all the N..U-1 blocks are read, kernel returns block number N
(as requested) to an application, successefully.

Now an app requests block number N+1, and kernel tries to read
blocks N+1..U+1.  Retrying again as in previous step.

And so on, up to when an app requests block number U-1.  And when,
finally, it requests block U, it receives read error.

So, kernel currentry tries to re-read the same failing block as
many times as the current readahead value (256 (times?) by default).

This whole process already killed my cdrom drive (I posted about it
to LKML several months ago) - literally, the drive has fried, and
does not work anymore.  Ofcourse that problem was a bug in firmware
(or whatever) of the drive *too*, but.. main problem with that is
current readahead logic as described above.
[/QUOTE]

Which was confirmed by Jens Axboe <axboe@suse.de>:

[QUOTE]
For ide-cd, it tends do only end the first part of the request on a
medium error. So you may see a lot of repeats :/
[/QUOTE]

With this patch, retries are expected to be reduced from, say, 256, to 5.

[akpm@osdl.org: cleanups]
Signed-off-by: Wu Fengguang <wfg@mail.ustc.edu.cn>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] R3964: fix GFP_KERNEL allocations in timer function
David Woodhouse [Sun, 25 Jun 2006 12:48:41 +0000 (05:48 -0700)]
[PATCH] R3964: fix GFP_KERNEL allocations in timer function

In the error case, add_msg() gets called from timer functions, so should
be using GFP_ATOMIC instead of GFP_KERNEL.

Ref: http://bugzilla.kernel.org/show_bug.cgi?id=6659.  Thanks to Christian
Werner <chw@ch-werner.de> for reporting, and for the initial fix.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] advansys section fixes
Randy Dunlap [Sun, 25 Jun 2006 12:48:40 +0000 (05:48 -0700)]
[PATCH] advansys section fixes

Priority: not critical.
Mark 3 functions __init.  Saves a little memory.
This makes these functions' calls to AdvWaitEEPCmd() (which is __init)
be clean (i.e., eliminates text -> init -> text call chain).

Fix multiple section mismatch warnings:
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet3550EEPConfig' (at offset 0x7a22) and 'AdvSet38C0800EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet3550EEPConfig' (at offset 0x7a4e) and 'AdvSet38C0800EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet3550EEPConfig' (at offset 0x7a79) and 'AdvSet38C0800EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet3550EEPConfig' (at offset 0x7aa2) and 'AdvSet38C0800EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet3550EEPConfig' (at offset 0x7abb) and 'AdvSet38C0800EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C0800EEPConfig' (at offset 0x7ae0) and 'AdvSet38C1600EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C0800EEPConfig' (at offset 0x7b0c) and 'AdvSet38C1600EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C0800EEPConfig' (at offset 0x7b37) and 'AdvSet38C1600EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C0800EEPConfig' (at offset 0x7b60) and 'AdvSet38C1600EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C0800EEPConfig' (at offset 0x7b79) and 'AdvSet38C1600EEPConfig'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C1600EEPConfig' (at offset 0x7b9e) and 'AdvExeScsiQueue'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C1600EEPConfig' (at offset 0x7bca) and 'AdvExeScsiQueue'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C1600EEPConfig' (at offset 0x7bf5) and 'AdvExeScsiQueue'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C1600EEPConfig' (at offset 0x7c1e) and 'AdvExeScsiQueue'
WARNING: drivers/scsi/advansys.o - Section mismatch: reference to .init.text: from .text between 'AdvSet38C1600EEPConfig' (at offset 0x7c37) and 'AdvExeScsiQueue'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] char/ip2: more section fixes (replacement)
Randy Dunlap [Sun, 25 Jun 2006 12:48:39 +0000 (05:48 -0700)]
[PATCH] char/ip2: more section fixes (replacement)

Priority: tossup.
In theory some of these (previously) __init functions could be called
after init, but that problem has not been observed AFAIK.

There were 2 cases of cleanup_module() (module_exit) calling __init
functions (clear_requested_irq() & have_requested_irq()).
These are more serious, but still not observed AFAIK.

Fix sections mismatch:
WARNING: drivers/char/ip2/ip2main.o - Section mismatch: reference to .init.text: from .text between 'cleanup_module' (at offset 0x228b) and 'ip2_loadmain'
WARNING: drivers/char/ip2/ip2main.o - Section mismatch: reference to .init.text: from .text between 'cleanup_module' (at offset 0x22ae) and 'ip2_loadmain'
WARNING: drivers/char/ip2/ip2main.o - Section mismatch: reference to .init.text: from .text between 'ip2_loadmain' (at offset 0x2501) and 'set_irq'
WARNING: drivers/char/ip2/ip2main.o - Section mismatch: reference to .init.text: from .text between 'ip2_loadmain' (at offset 0x25de) and 'set_irq'
WARNING: drivers/char/ip2/ip2main.o - Section mismatch: reference to .init.text: from .text between 'ip2_loadmain' (at offset 0x2698) and 'set_irq'
WARNING: drivers/char/ip2/ip2main.o - Section mismatch: reference to .init.text: from .text between 'ip2_loadmain' (at offset 0x2922) and 'set_irq'
WARNING: drivers/char/ip2/ip2main.o - Section mismatch: reference to .init.text: from .text between 'ip2_loadmain' (at offset 0x299e) and 'set_irq'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] cdrom/mcdx: section fixes
Randy Dunlap [Sun, 25 Jun 2006 12:48:38 +0000 (05:48 -0700)]
[PATCH] cdrom/mcdx: section fixes

Priority: not critical.
Make __mcdx_init() __init and static.  Saves a little memory.

Fix section mismatch warning and make the function static while there:
WARNING: drivers/cdrom/mcdx.o - Section mismatch: reference to .init.text: from .text between 'init_module' (at offset 0x8be) and 'mcdx_transfer'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] trident fb section fixes
Randy Dunlap [Sun, 25 Jun 2006 12:48:38 +0000 (05:48 -0700)]
[PATCH] trident fb section fixes

Priority: not critical.
Change 3 functions from __init to __devinit.
Could be an init/probe problem in theory, but not observed, so not
high priority IMO.

Fix section mismatch warnings:
WARNING: drivers/video/tridentfb.o - Section mismatch: reference to .init.text: from .text between 'trident_pci_probe' (at offset 0x1aad) and 'trident_pci_remove'
WARNING: drivers/video/tridentfb.o - Section mismatch: reference to .init.text: from .text between 'trident_pci_probe' (at offset 0x1b22) and 'trident_pci_remove'
WARNING: drivers/video/tridentfb.o - Section mismatch: reference to .init.text: from .text between 'trident_pci_probe' (at offset 0x1b31) and 'trident_pci_remove'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] wan/sdla section fixes
Randy Dunlap [Sun, 25 Jun 2006 12:48:37 +0000 (05:48 -0700)]
[PATCH] wan/sdla section fixes

netdev->set_config can be called at any time, so these references
to __initdata would be a real problem.
However, problem has not been observed AFAIK.

Fix section mismatch warnings:
WARNING: drivers/net/wan/sdla.o - Section mismatch: reference to .init.data: from .text between 'sdla_set_config' (at offset 0x1b8e) and 'sdla_stats'
WARNING: drivers/net/wan/sdla.o - Section mismatch: reference to .init.data: from .text between 'sdla_set_config' (at offset 0x1e76) and 'sdla_stats'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
18 years ago[PATCH] ftruncate does not always update m/ctime
Peter Staubach [Sun, 25 Jun 2006 12:48:36 +0000 (05:48 -0700)]
[PATCH] ftruncate does not always update m/ctime

In the course of trying to track down a bug where a file mtime was not
being updated correctly, it was discovered that the m/ctime updates were
not quite being handled correctly for ftruncate() calls.

Quoth SUSv3:

open(2):

        If O_TRUNC is set and the file did previously exist, upon
        successful completion, open() shall mark for update the st_ctime
        and st_mtime fields of the file.

truncate(2):

        Upon successful completion, if the file size is changed, this
        function shall mark for update the st_ctime and st_mtime fields
        of the file, and the S_ISUID and S_ISGID bits of the file mode
        may be cleared.

ftruncate(2):

        Upon successful completion, if fildes refers to a regular file,
        the ftruncate() function shall mark for update the st_ctime and
        st_mtime fields of the file and the S_ISUID and S_ISGID bits of
        the file mode may be cleared. If the ftruncate() function is
        unsuccessful, the file is unaffected.

The open(O_TRUNC) and truncate cases were being handled correctly, but the
ftruncate case was being handled like the truncate case.  The semantics of
truncate and ftruncate don't quite match, so ftruncate needs to be handled
slightly differently.

The attached patch addresses this issue for ftruncate(2).

My thanx to Stephen Tweedie and Trond Myklebust for their help in
understanding the situation and semantics.

Signed-off-by: Peter Staubach <staubach@redhat.com>
Cc: "Stephen C. Tweedie" <sct@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>