Commit Graph

939 Commits

Author SHA1 Message Date
NeilBrown
8ddf9efe67 [PATCH] md: support write-mostly device in raid1
This allows a device in a raid1 to be marked as "write mostly".  Read requests
will only be sent if there is no other option.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 16:39:10 -07:00
NeilBrown
36fa30636f [PATCH] md: all hot-add and hot-remove of md intent logging bitmaps
Both file-bitmaps and superblock bitmaps are supported.

If you add a bitmap file on the array device, you lose.

This introduces a 'default_bitmap_offset' field in mddev, as the ioctl used
for adding a superblock bitmap doesn't have room for giving an offset.  Later,
this value will be setable via sysfs.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 16:39:10 -07:00
Linus Torvalds
9c8550ee25 Remove "must_check" attributes in PCI-land
Don't just irritate all other kernel developers.  Fix the users first,
then you can re-introduce the must-check infrastructure to avoid new
cases creeping in.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 15:43:46 -07:00
Linus Torvalds
41d0ab2a7d Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2005-09-09 15:17:00 -07:00
Linus Torvalds
1d8674edb5 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2005-09-09 14:25:22 -07:00
Ingo Molnar
8d06afab73 [PATCH] timer initialization cleanup: DEFINE_TIMER
Clean up timer initialization by introducing DEFINE_TIMER a'la
DEFINE_SPINLOCK.  Build and boot-tested on x86.  A similar patch has been
been in the -RT tree for some time.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:48 -07:00
Miklos Szeredi
8254798199 [PATCH] FUSE: add fsync operation for directories
This patch adds a new FSYNCDIR request, which is sent when fsync is called
on directories.  This operation is available in libfuse 2.3-pre1 or
greater.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:47 -07:00
Miklos Szeredi
45323fb764 [PATCH] fuse: more flexible caching
Make data caching behavior selectable on a per-open basis instead of
per-mount.  Compatibility for the old mount options 'kernel_cache' and
'direct_io' is retained in the userspace library (version 2.4.0-pre1 or
later).

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:47 -07:00
Miklos Szeredi
04730fef1f [PATCH] fuse: transfer readdir data through device
This patch removes a long lasting "hack" in FUSE, which used a separate
channel (a file descriptor refering to a disk-file) to transfer directory
contents from userspace to the kernel.

The patch adds three new operations (OPENDIR, READDIR, RELEASEDIR), which
have semantics and implementation exactly maching the respective file
operations (OPEN, READ, RELEASE).

This simplifies the directory reading code.  Also disk space is not
necessary, which can be important in embedded systems.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:47 -07:00
Miklos Szeredi
06663267b4 [PATCH] FUSE: add padding
Add padding to structures to make sizes the same on 32bit and 64bit archs.
Initial testing and test machine generously provided by Franco Broi.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:46 -07:00
Miklos Szeredi
92a8780e11 [PATCH] FUSE - extended attribute operations
This patch adds the extended attribute operations to FUSE.

The following operations are added:

 o getxattr
 o setxattr
 o listxattr
 o removexattr

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:45 -07:00
Miklos Szeredi
b6aeadeda2 [PATCH] FUSE - file operations
This patch adds the file operations of FUSE.

The following operations are added:

 o open
 o flush
 o release
 o fsync
 o readpage
 o commit_write

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:45 -07:00
Miklos Szeredi
9e6268db49 [PATCH] FUSE - read-write operations
This patch adds the write filesystem operations of FUSE.

The following operations are added:

 o setattr
 o symlink
 o mknod
 o mkdir
 o create
 o unlink
 o rmdir
 o rename
 o link

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:45 -07:00
Miklos Szeredi
e5e5558e92 [PATCH] FUSE - read-only operations
This patch adds the read-only filesystem operations of FUSE.

This contains the following files:

 o dir.c
    - directory, symlink and file-inode operations

The following operations are added:

 o lookup
 o getattr
 o readlink
 o follow_link
 o directory open
 o readdir
 o directory release
 o permission
 o dentry revalidate
 o statfs

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:45 -07:00
Miklos Szeredi
334f485df8 [PATCH] FUSE - device functions
This adds the FUSE device handling functions.

This contains the following files:

 o dev.c
    - fuse device operations (read, write, release, poll)
    - registers misc device
    - support for sending requests to userspace

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:44 -07:00
Miklos Szeredi
d8a5ba4545 [PATCH] FUSE - core
This patch adds FUSE core.

This contains the following files:

 o inode.c
    - superblock operations (alloc_inode, destroy_inode, read_inode,
      clear_inode, put_super, show_options)
    - registers FUSE filesystem

 o fuse_i.h
    - private header file

Requirements
============

 The most important difference between orinary filesystems and FUSE is
 the fact, that the filesystem data/metadata is provided by a userspace
 process run with the privileges of the mount "owner" instead of the
 kernel, or some remote entity usually running with elevated
 privileges.

 The security implication of this is that a non-privileged user must
 not be able to use this capability to compromise the system.  Obvious
 requirements arising from this are:

  - mount owner should not be able to get elevated privileges with the
    help of the mounted filesystem

  - mount owner should not be able to induce undesired behavior in
    other users' or the super user's processes

  - mount owner should not get illegitimate access to information from
    other users' and the super user's processes

 These are currently ensured with the following constraints:

  1) mount is only allowed to directory or file which the mount owner
    can modify without limitation (write access + no sticky bit for
    directories)

  2) nosuid,nodev mount options are forced

  3) any process running with fsuid different from the owner is denied
     all access to the filesystem

 1) and 2) are ensured by the "fusermount" mount utility which is a
    setuid root application doing the actual mount operation.

 3) is ensured by a check in the permission() method in kernel

 I started thinking about doing 3) in a different way because Christoph
 H. made a big deal out of it, saying that FUSE is unacceptable into
 mainline in this form.

 The suggested use of private namespaces would be OK, but in their
 current form have many limitations that make their use impractical (as
 discussed in this thread).

 Suggested improvements that would address these limitations:

   - implement shared subtrees

   - allow a process to join an existing namespace (make namespaces
     first-class objects)

   - implement the namespace creation/joining in a PAM module

 With all that in place the check of owner against current->fsuid may
 be removed from the FUSE kernel module, without compromising the
 security requirements.

 Suid programs still interesting questions, since they get access even
 to the private namespace causing some information leak (exact
 order/timing of filesystem operations performed), giving some
 ptrace-like capabilities to unprivileged users.  BTW this problem is
 not strictly limited to the namespace approach, since suid programs
 setting fsuid and accessing users' files will succeed with the current
 approach too.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:44 -07:00
Antonino A. Daplas
829e79b680 [PATCH] fbcon: Break up bit_putcs into its component functions
The function bit_putcs() in drivers/video/console/bitblit.c is becoming large.
 Break it up into its component functions (bit_putcs_unaligned and
bit_putcs_aligned).

Incorporated fb_pad_aligned_buffer() optimization by Roman Zippel.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:41 -07:00
Antonino A. Daplas
96fe6a2109 [PATCH] fbdev: Add VESA Coordinated Video Timings (CVT) support
The Coordinated Video Timings (CVT) is the latest standard approved by VESA
concerning video timings generation.  It addresses the limitation of GTF which
is designed mainly for CRT displays.  CRT's have a high blanking requirement
(as much as 25% of the horizontal frame length) which artificially increases
the pixelclock.  Digital displays, on the other hand, needs to conserve the
pixelclock as much as possible.  The GTF also does not take into account the
different aspect ratios in its calculation.

The new function added is fb_find_mode_cvt().  It is called by fb_find_mode()
if it recognizes a mode option string formatted for CVT.  The format is:

<xres>x<yres>[M][R][-<bpp>][<at-sign><refresh>][i][m]

The 'M' tells the function to calculate using CVT.  On it's own, it will
compute a timing for CRT displays at 60Hz.  If the 'R' is specified, 'reduced
blanking' computation will be used, best for flatpanels.  The 'i' and the 'm'
is for 'interlaced mode' and 'with margins' respectively.

To determine if CVT was used, check for dmesg for something like this:

CVT Mode - <pix>M<n>[-R], ie: .480M3-R  (800x600 reduced blanking)

where: pix - product of xres and yres, in MB
    M   - is a CVT mode
    n   - the aspect ratio (3 - 4:3; 4 - 5:4; 9 - 16:9, 15:9; A - 16:10)
    -R   - reduced blanking

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 14:03:39 -07:00
Paul Mackerras
cdb9b9f730 [PATCH] PCI: Small rearrangement of PCI probing code
This patch makes some small rearrangements of the PCI probing code in
order to make it possible for arch code to set up the PCI tree
without needing to duplicate code from the PCI layer unnecessarily.
PPC64 will use this to set up the PCI tree from the Open Firmware
device tree, which we need to do on logically-partitioned pSeries
systems.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-09 13:58:45 -07:00
Thomas Winischhofer
544393fe58 [PATCH] sisfb update
This lifts sisfb from version 1.7.17 to version 1.8.9. Changes include:

- Added support for XGI V3XT, V5, V8, Z7 chipsets, including POSTing of
  all of these chipsets.

- Added support for latest SiS chipsets (761).

- Added support for SiS76x memory "hybrid" mode.

- Added support for new LCD resolutions (eg 1280x854, 856x480).

- Fixed support for 320x240 STN panels (for embedded devices).

- Fixed many HDTV modes (525p, 750p, 1080i).

- Fixed PCI config register reading/writing to use proper kernel
  functions for this purpose.

- Fixed PCI ROM handling to use the kernel's proper functions.

- Removed lots of "typedef"s.

- Removed lots of code which was for X.org/XFree86 only.

- Fixed coding style in many places.

- Removed lots of 2.4 cruft.

- Reduced stack size by unifying two previously separate structs into
  one.

- Added new hooks for memory allocation (for DRM).  Now the driver can
  truly handle multiple cards, including memory management.

- Fixed numerous minor bugs.

Signed-off-by: Thomas Winischhofer <thomas@winischhofer.net>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:58:01 -07:00
Antonino A. Daplas
b8c909454f [PATCH] fbdev: Fix greater than 1 bit monochrome color handling
Currently, fbcon assumes that the visual FB_VISUAL_MONO* is always 1 bit.
According to Geert, there are old hardware where it's possible to have
monochrome at 8-bit, but has only 2 colors, black - 0x00 and white - 0xff.
Fix color handlers (fb_get_color_depth, and get_color) for this special case.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:58:00 -07:00
Antonino A. Daplas
5e518d7672 [PATCH] fbdev: Resurrect hooks to get EDID from firmware
For the i386, code is already present in video.S that gets the EDID from the
video BIOS.  Make this visible so drivers can also use this data as fallback
when i2c does not work.

To ensure that the EDID block is returned for the primary graphics adapter
only, by check if the IORESOURCE_ROM_SHADOW flag is set.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:59 -07:00
Antonino A. Daplas
d2d58384fc [PATCH] vesafb: Add blanking support
Add rudimentary support by manipulating the VGA registers.  However, not
all vesa modes are VGA compatible, so VGA compatiblity is checked first.
Only 2 levels are supported, powerup and powerdown.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:58 -07:00
Antonino A. Daplas
7726e9e10f [PATCH] fbdev: Add fbset -a support
Add capability to fbdev to listen to the FB_ACTIVATE_ALL flag.  If set, it
notifies fbcon that all consoles must be set to the current var.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:58 -07:00
Dipankar Sarma
ab2af1f500 [PATCH] files: files struct with RCU
Patch to eliminate struct files_struct.file_lock spinlock on the reader side
and use rcu refcounting rcuref_xxx api for the f_count refcounter.  The
updates to the fdtable are done by allocating a new fdtable structure and
setting files->fdt to point to the new structure.  The fdtable structure is
protected by RCU thereby allowing lock-free lookup.  For fd arrays/sets that
are vmalloced, we use keventd to free them since RCU callbacks can't sleep.  A
global list of fdtable to be freed is not scalable, so we use a per-cpu list.
If keventd is already handling the current cpu's work, we use a timer to defer
queueing of that work.

Since the last publication, this patch has been re-written to avoid using
explicit memory barriers and use rcu_assign_pointer(), rcu_dereference()
premitives instead.  This required that the fd information is kept in a
separate structure (fdtable) and updated atomically.

Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:55 -07:00
Dipankar Sarma
badf16621c [PATCH] files: break up files struct
In order for the RCU to work, the file table array, sets and their sizes must
be updated atomically.  Instead of ensuring this through too many memory
barriers, we put the arrays and their sizes in a separate structure.  This
patch takes the first step of putting the file table elements in a separate
structure fdtable that is embedded withing files_struct.  It also changes all
the users to refer to the file table using files_fdtable() macro.  Subsequent
applciation of RCU becomes easier after this.

Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:55 -07:00
Dipankar Sarma
c0dfb29051 [PATCH] files: rcuref APIs
Adds a set of primitives to do reference counting for objects that are looked
up without locks using RCU.

Signed-off-by: Ravikiran Thirumalai <kiran_th@gmail.com>
Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:54 -07:00
Dipankar Sarma
8b6490e5fa [PATCH] files: fix rcu initializers
First of a number of files_lock scaability patches.

 Here are the x86 numbers -

 tiobench on a 4(8)-way (HT) P4 system on ramdisk :

                                         (lockfree)
 Test            2.6.10-vanilla  Stdev   2.6.10-fd       Stdev
 -------------------------------------------------------------
 Seqread         1400.8          11.52   1465.4          34.27
 Randread        1594            8.86    2397.2          29.21
 Seqwrite        242.72          3.47    238.46          6.53
 Randwrite       445.74          9.15    446.4           9.75

 The performance improvement is very significant.
 We are getting killed by the cacheline bouncing of the files_struct
 lock here. Writes on ramdisk (ext2) seems to vary just too
 much to get any meaningful number.

 Also, With Tridge's thread_perf test on a 4(8)-way (HT) P4 xeon system :

 2.6.12-rc5-vanilla :

 Running test 'readwrite' with 8 tasks
 Threads     0.34 +/- 0.01 seconds
 Processes   0.16 +/- 0.00 seconds

 2.6.12-rc5-fd :

 Running test 'readwrite' with 8 tasks
 Threads     0.17 +/- 0.02 seconds
 Processes   0.17 +/- 0.02 seconds

 I repeated the measurements on ramfs (as opposed to ext2 on ramdisk in
 the earlier measurement) and I got more consistent results from tiobench :

 4(8) way xeon P4
 -----------------
                                         (lock-free)
 Test            2.6.12-rc5      Stdev   2.6.12-rc5-fd   Stdev
 -------------------------------------------------------------
 Seqread         1282            18.59   1343.6          26.37
 Randread        1517            7       2415            34.27
 Seqwrite        702.2           5.27    709.46           5.9
 Randwrite       846.86          15.15   919.68          21.4

 4-way ppc64
 ------------
                                         (lock-free)
 Test            2.6.12-rc5      Stdev   2.6.12-rc5-fd   Stdev
 -------------------------------------------------------------
 Seqread         1549            91.16   1569.6          47.2
 Randread        1473.6          25.11   1585.4          69.99
 Seqwrite        1096.8          20.03   1136            29.61
 Randwrite       1189.6           4.04   1275.2          32.96

 Also running Tridge's thread_perf test on ppc64 :

 2.6.12-rc5-vanilla
 --------------------
 Running test 'readwrite' with 4 tasks
 Threads     0.20 +/- 0.02 seconds
 Processes   0.16 +/- 0.01 seconds

 2.6.12-rc5-fd
 --------------------
 Running test 'readwrite' with 4 tasks
 Threads     0.18 +/- 0.04 seconds
 Processes   0.16 +/- 0.01 seconds

 The benefits are huge (upto ~60%) in some cases on x86 primarily
 due to the atomic operations during acquisition of ->file_lock
 and cache line bouncing in fast path. ppc64 benefits are modest
 due to LL/SC based locking, but still statistically significant.

This patch:

RCU head initilizer no longer needs the head varible name since we don't use
list.h lists anymore.

Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:54 -07:00
Mauro Carvalho Chehab
793cf9e6a5 [PATCH] v4l: common part Updates and tuner additions
- Remove $Id CVS logs for V4L files
- Included newer cards.
- Added a new NEC protocol for ir based on pulse distance.
- Enable ATSC support for DViCO FusionHDTV5 Gold.
- Added tuner LG NTSC (TALN mini series).
- Fixed tea5767 autodetection.
- Resolve more tuner types.
- Commented debug function removed from mainstream.
- Remove comments from mainstream. Still on development tree.
- linux/version dependencies removed.
- BTSC Lang1 now is set to auto_stereo mode.
- New tuner standby API.
- i2c-core.c uses hexadecimal for the i2c address, so it should stay consistent.

Signed-off-by: Uli Luckas <luckas@musoft.de>
Signed-off-by: Mac Michaels <wmichaels1@earthlink.net>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Hermann Pitton <hermann.pitton@onlinehome.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:49 -07:00
Dominik Brodowski
b3743fa444 [PATCH] yenta: share code with PCI core
Share code between setup-bus.c and yenta_socket.c: use the write-out code of
resources to the bridge also in yenta_socket.c, as it provides useful debug
output.  In addition, it fixes the bug that the CPU-centric resource view
might need to be transferred to the PCI-centric view: setup-bus.c does that,
while yenta-socket.c did not.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:47 -07:00
Andrew Stribblehill
fac92becda [PATCH] bfs: fix endianness, signedness; add trivial bugfix
* Makes BFS code endianness-clean.

* Fixes some signedness warnings.

* Fixes a problem in fs/bfs/inode.c:164 where inodes not synced to disk
  don't get fully marked as clean.  Here's how to reproduce it:

# mount -o loop -t bfs /bfs.img /mnt
# df -i /mnt
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/bfs.img                  48       1      47    3% /mnt
# df -k /mnt
Filesystem           1K-blocks      Used Available Use% Mounted on
/bfs.img                   512         5       508   1% /mnt
# cp 60k-archive.zip /mnt/mt.zip
# df -k /mnt
Filesystem           1K-blocks      Used Available Use% Mounted on
/bfs.img                   512        65       447  13% /mnt
# df -i /mnt
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/bfs.img                  48       2      46    5% /mnt
# rm /mnt/mt.zip
# echo $?
0

 [If the unlink happens before the buffers flush, the following happens:]

# df -i /mnt
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/bfs.img                  48       2      46    5% /mnt
# df -k /mnt
Filesystem           1K-blocks      Used Available Use% Mounted on
/bfs.img                   512        65       447  13% /mnt

 fs/bfs/bfs.h           |    1

Signed-off-by: Andrew Stribblehill <ads@wompom.org>
Cc: <tigran@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:32 -07:00
Chen, Kenneth W
383f2835eb [PATCH] Prefetch kernel stacks to speed up context switch
For architecture like ia64, the switch stack structure is fairly large
(currently 528 bytes).  For context switch intensive application, we found
that significant amount of cache misses occurs in switch_to() function.
The following patch adds a hook in the schedule() function to prefetch
switch stack structure as soon as 'next' task is determined.  This allows
maximum overlap in prefetch cache lines for that structure.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:31 -07:00
Stephen Smalley
e31e14ec35 [PATCH] remove the inode_post_link and inode_post_rename LSM hooks
This patch removes the inode_post_link and inode_post_rename LSM hooks as
they are unused (and likely useless).

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:28 -07:00
Stephen Smalley
a74574aafe [PATCH] Remove security_inode_post_create/mkdir/symlink/mknod hooks
This patch removes the inode_post_create/mkdir/mknod/symlink LSM hooks as
they are obsoleted by the new inode_init_security hook that enables atomic
inode security labeling.

If anyone sees any reason to retain these hooks, please speak now.  Also,
is anyone using the post_rename/link hooks; if not, those could also be
removed.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:28 -07:00
Stephen Smalley
5e41ff9e06 [PATCH] security: enable atomic inode security labeling
The following patch set enables atomic security labeling of newly created
inodes by altering the fs code to invoke a new LSM hook to obtain the security
attribute to apply to a newly created inode and to set up the incore inode
security state during the inode creation transaction.  This parallels the
existing processing for setting ACLs on newly created inodes.  Otherwise, it
is possible for new inodes to be accessed by another thread via the dcache
prior to complete security setup (presently handled by the
post_create/mkdir/...  LSM hooks in the VFS) and a newly created inode may be
left unlabeled on the disk in the event of a crash.  SELinux presently works
around the issue by ensuring that the incore inode security label is
initialized to a special SID that is inaccessible to unprivileged processes
(in accordance with policy), thereby preventing inappropriate access but
potentially causing false denials on legitimate accesses.  A simple test
program demonstrates such false denials on SELinux, and the patch solves the
problem.  Similar such false denials have been encountered in real
applications.

This patch defines a new inode_init_security LSM hook to obtain the security
attribute to apply to a newly created inode and to set up the incore inode
security state for it, and adds a corresponding hook function implementation
to SELinux.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-09 13:57:27 -07:00
David S. Miller
8259f16257 Merge master.kernel.org:/pub/scm/linux/kernel/git/acme/net-2.6 2005-09-09 13:17:43 -07:00
Dave Jones
144a50ea5e [PATCH] must_check attributes for PCI layer.
Self explanatory really. Some newer gcc's print a warning
if a function is used and we don't check its result.
We do this for a bunch of things in the kernel already,
this extends that to the PCI layer.

Based on a patch originally from Arjan van de Ven.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-09 11:24:31 -07:00
Arnaldo Carvalho de Melo
b0e567806d [DCCP] Introduce dccp_timestamp
To start the timestamps with 0.0ms, easing the integer maths in the CCIDs, this
probably will be reworked to use the to be introduced struct timeval_offset
infrastructure out of skb_get_timestamp, etc.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-09-09 02:38:35 -03:00
Arnaldo Carvalho de Melo
507d37cf26 [CCID] Only call the HC insert_options methods when requested
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
2005-09-09 02:30:07 -03:00
Linus Torvalds
5420520973 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6 2005-09-08 17:21:02 -07:00
Alan Stern
b375a0495f [PATCH] USB: URB_ASYNC_UNLINK flag removed from the kernel
29 July 2005, Cambridge, MA:

This afternoon Alan Stern submitted a patch to remove the URB_ASYNC_UNLINK
flag from the Linux kernel.  Mr. Stern explained, "This flag is a relic
from an earlier, less-well-designed system.  For over a year it hasn't
been used for anything other than printing warning messages."

An anonymous spokesman for the Linux kernel development community
commented, "This is exactly the sort of thing we see happening all the
time.  As the kernel evolves, support for old techniques and old code can
be jettisoned and replaced by newer, better approaches.  Proprietary
operating systems do not have the freedom or flexibility to change so
quickly."

Mr. Stern, a staff member at Harvard University's Rowland Institute who
works on Linux only as a hobby, noted that the patch (labelled as548) did
not update two files, keyspan.c and option.c, in the USB drivers' "serial"
subdirectory.  "Those files need more extensive changes," he remarked.
"They examine the status field of several URBs at times when they're not
supposed to.  That will need to be fixed before the URB_ASYNC_UNLINK flag
is removed."

Greg Kroah-Hartman, the kernel maintainer responsible for overseeing all
of Linux's USB drivers, did not respond to our inquiries or return our
calls.  His only comment was "Applied, thanks."

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08 16:23:04 -07:00
Olav Kongas
f8d23d3098 [PATCH] USB: isp116x-hcd: remove clock() and reset()
This patch removes support for user-provided platform-specific hardware reset
and clock starting/stopping functions. Hardware reset was needed earlier as
getting the software reset working was tricky due to the lack of documentation.
Recently, a number of people using isp116x have said the software reset is
working for them.

I haven't heard of anybody using the clock starting/stopping.

Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08 16:22:48 -07:00
Olav Kongas
9d233d9fae [PATCH] USB: isp116x-hcd: per-port overcurrent reporting
This patch sets the isp116x to report overcurrent always per-port.

Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08 16:22:48 -07:00
Olav Kongas
165c0f3939 [PATCH] USB: isp116x-hcd: support only per-port power switching
The isp116x chip will now always be in per-port power switching mode. Remove
conf options to set any other mode.

Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08 16:22:47 -07:00
Olav Kongas
d4d62861b5 [PATCH] USB: isp116x-hcd: remove unnecessary ClockNotStop configuration option
Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08 16:22:47 -07:00
Olav Kongas
dc5bed091a [PATCH] USB: isp116x-hcd: use fixed power-on-to-power-good-time
This patch removes the power-on-to-power-good-time configuration option for
isp116x-hcd.

Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08 16:22:47 -07:00
Kay Sievers
fbf82fd2e1 [PATCH] USB: real nodes instead of usbfs
This patch introduces a /sys/class/usb_device/ class
where every connected usb-device will show up:

  tree /sys/class/usb_device/
  /sys/class/usb_device/
  |-- usb1.1
  |   |-- dev
  |   `-- device -> ../../../devices/pci0000:00/0000:00:1d.0/usb1
  |-- usb2.1
  |   |-- dev
  |   `-- device -> ../../../devices/pci0000:00/0000:00:1d.1/usb2
  ...

The presence of the "dev" file lets udev create real device nodes.
  kay@pim:~/src/linux-2.6> tree /dev/bus/usb/
  /dev/bus/usb/
  |-- 1
  |   `-- 1
  |-- 2
  |   `-- 1
  ...

udev rule:
  SUBSYSTEM="usb_device", PROGRAM="/sbin/usb_device %k", NAME="%c"
  (echo $1 | /bin/sed 's/usb\([0-9]*\)\.\([0-9]*\)/bus\/usb\/\1\/\2/')

This makes libusb pick up the real nodes instead of the mounted usbfs:
  export USB_DEVFS_PATH=/dev/bus/usb

Background:
  All this makes it possible to manage usb devices with udev instead of
  the devfs solution. We are currently working on a pam_console/resmgr
  replacement driven by udev and a pam-helper. It applies ACL's to device
  nodes, which is required for modern desktop functionalty like
  "Fast User Switching" or multiple local login support.

New patch with its own major. I've succesfully disabled usbfs and use real
nodes only on my box. With: "export USB_DEVFS_PATH=/dev/bus/usb" libusb picks
up the udev managed nodes instead of reading usbfs files.

This makes udev to provide symlinks for libusb to pick up:
  SUBSYSTEM="usb_device", PROGRAM="/sbin/usbdevice %k", SYMLINK="%c"

/sbin/usbdevice:
  #!/bin/sh
  echo $1 | /bin/sed 's/usbdev\([0-9]*\)\.\([0-9]*\)/bus\/usb\/\1\/\2/'

Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-08 16:22:29 -07:00
Linus Torvalds
6d8de3a26b Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/w1-2.6 2005-09-08 15:55:53 -07:00
Linus Torvalds
7bbedd5213 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2005-09-08 15:55:23 -07:00
Linus Torvalds
27e2df2228 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2005-09-08 15:52:11 -07:00