Commit Graph

1480 Commits

Author SHA1 Message Date
Will Dyson
1b33724a44 remove unused fs/befs/attribute.c
If anyone needs a fully-functional befs driver, the easiest route to
that would probably be getting Haiku's befs driver to compile in
userland as a FUSE fs.

At any rate, attribute.c can go. It is easy enough to add back in if
anyone ever wants to do the (relativly minor) refactoring nessisary to
get it working.

Signed-off-by: Will Dyson <will.dyson@gmail.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2005-11-08 16:54:53 +01:00
Adrian Bunk
0fb2dae0a9 fs/reiserfs/hashes.c should #include <linux/reiserfs_fs.h>
Every file should #include the headers containing the prototypes for
it's global functions.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
2005-11-08 16:49:52 +01:00
Adrian Bunk
a70cf17c23 fs/partitions/ultrix.c should #include "ultrix.h"
Every file should #include the headers containing the prototypes for
it's global functions.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
2005-11-08 16:49:14 +01:00
Adrian Bunk
34c90b29fe jffs_fm.c should #include "intrep.h"
Every file should #include the headers containing the prototypes for
it's global functions.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
2005-11-08 16:48:36 +01:00
Adrian Bunk
6e1e8e11c7 fs/freevxfs/: add #include's
Every file should #include the headers containing the prototypes for
it's global functions.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
2005-11-08 16:47:45 +01:00
Linus Torvalds
f093182d31 Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge 2005-11-07 20:23:46 -08:00
Ram Pai
9676f0c638 [PATCH] unbindable mounts
An unbindable mount does not forward or receive propagation.  Also
unbindable mount disallows bind mounts.  The semantics is as follows.

Bind semantics:
  It is invalid to bind mount an unbindable mount.

Move semantics:
  It is invalid to move an unbindable mount under shared mount.

Clone-namespace semantics:
  If a mount is unbindable in the parent namespace, the corresponding
  cloned mount in the child namespace becomes unbindable too.  Note:
  there is subtle difference, unbindable mounts cannot be bind mounted
  but can be cloned during clone-namespace.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:11 -08:00
Ram Pai
5afe002213 [PATCH] handling of slave mounts
This makes bind, rbind, move, clone namespace and umount operations
aware of the semantics of slave mount (see Documentation/sharedsubtree.txt
in the last patch of the series for detailed description).

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:11 -08:00
Ram Pai
a58b0eb8e6 [PATCH] introduce slave mounts
A slave mount always has a master mount from which it receives
mount/umount events.  Unlike shared mount the event propagation does not
flow from the slave mount to the master.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:11 -08:00
Ram Pai
a05964f391 [PATCH] shared mounts handling: umount
An unmount of a mount creates a umount event on the parent.  If the
parent is a shared mount, it gets propagated to all mounts in the peer
group.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:11 -08:00
Ram Pai
2144440327 [PATCH] shared mounts handling: move
Implement handling of mount --move in presense of shared mounts (see
Documentation/sharedsubtree.txt in the end of patch series for detailed
description).

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:11 -08:00
Ram Pai
b90fa9ae8f [PATCH] shared mount handling: bind and rbind
Implement handling of MS_BIND in presense of shared mounts (see
Documentation/sharedsubtree.txt in the end of patch series for detailed
description).

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:11 -08:00
Ram Pai
03e06e68ff [PATCH] introduce shared mounts
This creates shared mounts.  A shared mount when bind-mounted to some
mountpoint, propagates mount/umount events to each other.  All the
shared mounts that propagate events to each other belong to the same
peer-group.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:10 -08:00
Ram Pai
07b20889e3 [PATCH] beginning of the shared-subtree proper
A private mount does not forward or receive propagation.  This patch
provides user the ability to convert any mount to private.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:10 -08:00
Ram Pai
390c684367 [PATCH] making namespace_sem global
This removes the per-namespace semaphore in favor of a global semaphore.
This can have an effect on namespace scalability.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:10 -08:00
Ram Pai
36341f6456 [PATCH] mount expiry fixes
- clean up the ugliness in may_umount_tree()

 - fix a bug in do_loopback().  after cloning a tree, do_loopback()
   unlinks only the topmost mount of the cloned tree, leaving behind the
   children mounts on their corresponding expiry list.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:10 -08:00
Ram Pai
70fbcdf4d2 [PATCH] umount_tree() locking change
umount is done under the protection of the namespace semaphore.  This
can lead to intresting deadlocks when the last reference to a mount is
released, if filesystem code is in sufficiently nasty state.

This collects all the to-be-released-mounts and releases them after
releasing the namespace semaphore.  That both reduces the time we are
holding namespace semaphore and gets the things more robust.

Idea proposed by Al Viro.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:10 -08:00
Ram Pai
5b83d2c5c0 [PATCH] sanitize the interface of graft_tree().
Old semantics: graft_tree() grabs a reference on the vfsmount before
returning success.

New one: graft_tree() leaves that to caller.

All the callers of graft_tree() immediately dropped that reference
anyway.  Changing the interface takes care of this unnecessary overhead.

Idea proposed by Al Viro.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:10 -08:00
Ram Pai
b58fed8b19 [PATCH] lindent fs/namespace.c
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:10 -08:00
Al Viro
5addc5dd88 [PATCH] make /proc/mounts pollable
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:10 -08:00
Al Viro
1abe77b0fc [PATCH] allow callers of seq_open do allocation themselves
Allow caller of seq_open() to kmalloc() seq_file + whatever else they
want and set ->private_data to it.  seq_open() will then abstain from
doing allocation itself.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:09 -08:00
Al Viro
ccd48bc7fa [PATCH] cleanups and bug fix in do_loopback()
- check_mnt() on the source of binding should've been unconditional
   from the very beginning.  My fault - as far I could've trace it,
   that's an old thinko made back in 2001.  Kudos to Miklos for spotting
   it...

   Fixed.

 - code cleaned up.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:09 -08:00
Al Viro
7b7b1ace2d [PATCH] saner handling of auto_acct_off() and DQUOT_OFF() in umount
The way we currently deal with quota and process accounting that might
keep vfsmount busy at umount time is inherently broken; we try to turn
them off just in case (not quite correctly, at that) and

  a) pray umount doesn't fail (otherwise they'll stay turned off)
  b) pray nobody doesn anything funny just as we turn quota off

Moreover, LSM provides hooks for doing the same sort of broken logics.

The proper way to deal with that is to introduce the second kind of
reference to vfsmount.  Semantics:

 - when the last normal reference is dropped, all special ones are
   converted to normal ones and if there had been any, cleanup is done.
 - normal reference can be cloned into a special one
 - special reference can be converted to normal one; that's a no-op if
   we'd already passed the point of no return (i.e.  mntput() had
   converted special references to normal and started cleanup).

The way it works: e.g. starting process accounting converts the vfsmount
reference pinned by the opened file into special one and turns it back
to normal when it gets shut down; acct_auto_close() is done when no
normal references are left.  That way it does *not* obstruct umount(2)
and it silently gets turned off when the last normal reference to
vfsmount is gone.  Which is exactly what we want...

The same should be done by LSM module that holds some internal
references to vfsmount and wants to shut them down on umount - it should
make them special and security_sb_umount_close() will be called exactly
when the last normal reference to vfsmount is gone.

quota handling is even simpler - we don't use normal file IO anymore, so
there's no need to hold vfsmounts at all.  DQUOT_OFF() is done from
deactivate_super(), where it really belongs.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 18:18:09 -08:00
Benjamin Herrenschmidt
183d020258 [PATCH] ppc64: SMU partition recovery
This patch adds the ability to the SMU driver to recover missing
calibration partitions from the SMU chip itself. It also adds some
dynamic mecanism to /proc/device-tree so that new properties are visible
to userland.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-08 11:17:40 +11:00
Linus Torvalds
b3ce1debe2 Merge master.kernel.org:/pub/scm/linux/kernel/git/tglx/mtd-2.6
Some manual fixups for clashing kfree() cleanups etc.
2005-11-07 10:24:08 -08:00
Adrian Bunk
233c1234d3 [PATCH] fs/super.c: unexport user_get_super
There's no modular usage in the kernel and modules shouldn't use this
symbol.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:54:09 -08:00
Jesper Juhl
f99d49adf5 [PATCH] kfree cleanup: fs
This is the fs/ part of the big kfree cleanup patch.

Remove pointless checks for NULL prior to calling kfree() in fs/.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:54:06 -08:00
Randy Dunlap
b8887e6e8c [PATCH] kernel-docs: fix kernel-doc format problems
Convert to proper kernel-doc format.

Some have extra blank lines (not allowed immed.  after the function name)
or need blank lines (after all parameters).  Function summary must be only
one line.

Colon (":") in a function description does weird things (causes kernel-doc
to think that it's a new section head sadly).

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:55 -08:00
Randy Dunlap
6c8bec6d5f [PATCH] jbd doc: fix some kernel-doc warnings
Add structure fields kernel-doc for 2 fields in struct journal_s.

Warning(/var/linsrc/linux-2614-rc4//include/linux/jbd.h:808): No description found for parameter 'j_wbuf'
Warning(/var/linsrc/linux-2614-rc4//include/linux/jbd.h:808): No description found for parameter 'j_wbufsize'

Convert fs/jbd/recovery.c non-static functions to kernel-doc format.

fs/jbd/recovery.c doesn't export any symbols, so it should use
!I instead of !E to eliminate this warning message:

Warning(/var/linsrc/linux-2614-rc4//fs/jbd/recovery.c): no structured comments found

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:55 -08:00
NeilBrown
80d188a643 [PATCH] knfsd: make sure svc_process call the correct pg_authenticate for multi-service port
If an RPC socket is serving multiple programs, then the pg_authenticate of
the first program in the list is called, instead of pg_authenticate for the
program to be run.

This does not cause a problem with any programs in the current kernel, but
could confuse future code.

Also set pg_authenticate for nfsd_acl_program incase it ever gets used.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:49 -08:00
NeilBrown
0ba7536d5d [PATCH] knfsd: Fix some minor sign problems in nfsd/xdr
There are a couple of tests which could possibly be confused by extremely
large numbers appearing in 'xdr' packets.  I think the closest to an exploit
you could get would be writing random data from a free page into a file - i.e.
 leak data out of kernel space.

I'm fairly sure they cannot be used for remote compromise.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:48 -08:00
NeilBrown
70c3b76c28 [PATCH] knfsd: Allow run-time selection of NFS versions to export
Provide a file in the NFSD filesystem that allows setting and querying of
which version of NFS are being exported.  Changes are only allowed while no
server is running.

Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:48 -08:00
NeilBrown
7390022d69 [PATCH] knfsd: Restore functionality to read from file in /proc/fs/nfsd/
Most files in the nfsd filesystems are transaction files.  You write a
request, and read a response.

For some (e.g.  'threads') it makes sense to just be able to read and get the
current value.

This functionality did exist but was broken recently when someone modified
nfsctl.c without going through the maintainer.  This patch fixes the
regression.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:47 -08:00
NeilBrown
15b7a1b86d [PATCH] knfsd: fix setattr-on-symlink error return
This is a somewhat cosmetic fix to keep the SpecFS validation test from
complaining.

SpecFS want's to try chmod on symlinks, and ext3 and reiser (at least) return
ENOTSUPP.

Probably both sides are being silly, but it is easiest to simply make it a
non-issue and filter out chmod requests on symlinks at the nfsd level.

Signed-off-by: Olaf Kirch <okir@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:47 -08:00
Miklos Szeredi
befc649c22 [PATCH] FUSE: pass file handle in setattr
This patch passes the file handle supplied in iattr to userspace, in case the
->setattr() was invoked from sys_ftruncate().  This solves the permission
checking (or lack thereof) in ftruncate() for the class of filesystems served
by an unprivileged userspace process.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:42 -08:00
Miklos Szeredi
fd72faac95 [PATCH] FUSE: atomic create+open
This patch adds an atomic create+open operation.  This does not yet work if
the file type changes between lookup and create+open, but solves the
permission checking problems for the separte create and open methods.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:42 -08:00
Miklos Szeredi
31d40d74b4 [PATCH] FUSE: add access call
Add a new access call, which will only be called if ->permission is invoked
from sys_access().  In all other cases permission checking is delayed until
the actual filesystem 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>
2005-11-07 07:53:42 -08:00
Miklos Szeredi
cc4e69dee4 [PATCH] VFS: pass file pointer to filesystem from ftruncate()
This patch extends the iattr structure with a file pointer memeber, and adds
an ATTR_FILE validity flag for this member.

This is set if do_truncate() is invoked from ftruncate() or from
do_coredump().

The change is source and binary compatible.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:42 -08:00
Christoph Hellwig
db73e9aa99 [PATCH] remove superflous ctime/mtime updates in affs
Both AFFS and HPFS update the ctime and mtime in the write path, after
generic_file_write returned and marked the inode dirty.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:41 -08:00
Christoph Hellwig
a463ddd343 [PATCH] afs: use generic_ro_fops
afs actually had a write method that returned different errors depending on
whether some flag was set - better return the standard EINVAL errno.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:41 -08:00
Christoph Hellwig
dc487002a2 [PATCH] vxfs: use generic_ro_fops
No need to duplicate a generic readonly file ops table in befs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:41 -08:00
Christoph Hellwig
2cf0691621 [PATCH] befs: use generic_ro_fops
No need to duplicate a generic readonly file ops table in befs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:41 -08:00
Tim Schmielau
8c65b4a604 [PATCH] fix remaining missing includes
Fix more include file problems that surfaced since I submitted the previous
fix-missing-includes.patch.  This should now allow not to include sched.h
from module.h, which is done by a followup patch.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:41 -08:00
Peter Staubach
6fdcc21622 [PATCH] memory leak in dentry_open()
There is a memory leak possible in dentry_open().  If get_empty_filp()
fails, then the references to dentry and mnt need to be released.  The
attached patch adds the calls to dput() and mntput() to release these two
references.

Signed-off-by: Peter Staubach <staubach@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:39 -08:00
Coywolf Qi Hunt
385fd4c59d [PATCH] __find_get_block_slow() cleanup
Get rid of the `int unused' parameter of __find_get_block_slow().

Signed-off-by: Coywolf Qi Hunt <qiyong@fc-cn.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:39 -08:00
Davi Arnaut
53b27584db [PATCH] smbfs: 'names_cache' memory leak
Data allocated with "__getname()" should always be free'd with "__putname()"
because of the AUDITSYSCALL code.

Signed-off-by: Davi Arnaut <davi.arnaut@gmail.com>
Cc: Urban Widmark <urban@teststation.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:39 -08:00
Davi Arnaut
ce44eeb690 [PATCH] V9FS: 'names_cache' memory leak
Data allocated with "__getname()" should always be free'd with "__putname()"
because of the AUDITSYSCALL code.

Signed-off-by: Davi Arnaut <davi.arnaut@gmail.com>
Cc: <rminnich@lanl.gov>
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:39 -08:00
Adrian Bunk
be586bab8b [PATCH] quota: small cleanups
- "extern inline" -> "static inline"

- every file should #include the headers containing the prototypes for
  it's global functions

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:39 -08:00
Zach Brown
d55b5fdaf4 [PATCH] aio: remove aio_max_nr accounting race
AIO was adding a new context's max requests to the global total before
testing if that resulting total was over the global limit.  This let
innocent tasks get their new limit tested along with a racing guilty task
that was crossing the limit.  This serializes the _nr accounting with a
spinlock It also switches to using unsigned long for the global totals.
Individual contexts are still limited to an unsigned int's worth of
requests by the syscall interface.

The problem and fix were verified with a simple program that spun creating
and destroying a context while holding on to another long lived context.
Before the patch a task creating a tiny context could get a spurious EAGAIN
if it raced with a task creating a very large context that overran the
limit.

Signed-off-by: Zach Brown <zach.brown@oracle.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:38 -08:00
Christoph Hellwig
d8ba3b7310 [PATCH] fuse: remove dead code from fuse_permission
The -EROFS check has moved up to permission() in the VFS a while ago.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:37 -08:00
Adrian Bunk
ccb6e363a6 [PATCH] fs/smbfs/request.c: turn NULL dereference into BUG()
In a case documented as

  We should never be called with any of these states

BUG() in a case that would later result in a NULL pointer dereference.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:36 -08:00
Lennert Buytenhek
878129a304 [PATCH] hfs needs nls
Reported by Eddy Petrisor <eddy.petrisor@gmail.com>

fs/built-in.o(.text+0x35fdc): In function `hfs_mdb_put':
: undefined reference to `unload_nls'
fs/built-in.o(.text+0x35ff1): In function `hfs_mdb_put':
: undefined reference to `unload_nls'
fs/built-in.o(.text+0x367a5): In function `parse_options':
super.c: undefined reference to `load_nls'
fs/built-in.o(.text+0x367db):super.c: undefined reference to `load_nls'
fs/built-in.o(.text+0x36938):super.c: undefined reference to `load_nls_default'

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Acked-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:36 -08:00
Paul E. McKenney
665a7583f3 [PATCH] Remove hlist_for_each_rcu() API, convert existing use to hlist_for_each_entry_rcu
Remove the hlist_for_each_rcu() API, which is used only in one place, and
is trivially converted to hlist_for_each_entry_rcu(), making the code
shorter and more readable.  Any out-of-tree uses may be similarly
converted.

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>
2005-11-07 07:53:35 -08:00
Matt Helsley
9f46080c41 [PATCH] Process Events Connector
This patch adds a connector that reports fork, exec, id change, and exit
events for all processes to userspace.  It replaces the fork_advisor patch
that ELSA is currently using.  Applications that may find these events
useful include accounting/auditing (e.g.  ELSA), system activity monitoring
(e.g.  top), security, and resource management (e.g.  CKRM).

Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:35 -08:00
Andrew Morton
49364ce253 [PATCH] write_inode_now(): write inode if not BDI_CAP_NO_WRITEBACK
If the backing_dev_info doesn't have BDI_CAP_NO_WRITEBACK we're not supposed
to write back an inode's pages.  But in this situation write_inode_now()
refuses to write the inode itself as well.  Fix.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:35 -08:00
Peter Oberparleiter
4cd5b9f6df [PATCH] s390: cleanup of include/asm-s390/vtoc.h
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:34 -08:00
Pekka J Enberg
2109a2d1b1 [PATCH] mm: rename kmem_cache_s to kmem_cache
This patch renames struct kmem_cache_s to kmem_cache so we can start using
it instead of kmem_cache_t typedef.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:24 -08:00
Thomas Gleixner
182ec4eee3 [JFFS2] Clean up trailing white spaces
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-07 14:18:56 +01:00
Artem B. Bityutskiy
008531f4c3 [JFFS2] Fix broken compile when debug level = 2
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 23:17:39 +01:00
Todd Poynor
4fc67fbe52 [JFFS2] Return 0, not number of bytes written, for success at commit_write
Some callers to block-layer commit_write function treat non-zero return as
error, notably the loopback mount driver sometimes used in conjunction with
JFFS2 on NAND flash for bad block avoidance, etc.  Return zero for success
as do various other commit_write functions.

Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 23:14:16 +01:00
Artem B. Bityutskiy
daba5cc4bc [JFFS2] Fix dataflash support
- assume wbuf may be of size which is not power of 2
- don't make strange assumption about not padding wbuf for DataFlash
- use wbuf = DataFlash page and eraseblock >= 8 Dataflash pages

From: Peter Menzebach <pm-mtd@mw-itcon.de>
Acked-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 23:01:48 +01:00
Artem B. Bityutskiy
d55849aa4d [JFFS2] Use memset(struct) instead of nulling struct members one by one
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 22:41:34 +01:00
Artem B. Bityutskiy
2f0077e018 [JFFS2] Remove stale comment
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 22:40:33 +01:00
Ferenc Havasi
2bc9764c48 [JFFS2] Rename jffs2_summary_node to jffs2_raw_summary
Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 22:32:45 +01:00
Artem B. Bityutskiy
733802d974 [JFFS2] Debug code simplification, update TODO
Simplify the debugging code further.
Update the TODO list

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 22:20:33 +01:00
Ferenc Havasi
34c0e90671 [JFFS2] Account summary space in reserved_size.
Always keep valid data in reserved_size.

It did not cause problems, but the reservation code was unoptimal
when centralized summary was active or the size of the erase block
was very small.

Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:47:18 +01:00
Artem B. Bityutskiy
81e39cf029 [JFFS2] Debug message format clean up
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:38:34 +01:00
Ferenc Havasi
8acff5e934 [JFFS2] Call summary collector for all mtd devices with writev support
Do the summary collection in the right place. If the device
was not writebuffered but had c->mtd->writev function
(e.g. blkmtd) the summary collector function was not called.

Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:37:07 +01:00
Ferenc Havasi
c617e84248 [JFFS2] Return real jffs2_sum_init() error code
Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:31:05 +01:00
Ferenc Havasi
e631ddba58 [JFFS2] Add erase block summary support (mount time improvement)
The goal of summary is to speed up the mount time. Erase block summary (EBS)
stores summary information at the end of every (closed) erase block. It is
no longer necessary to scan all nodes separetly (and read all pages of them)
just read this "small" summary, where every information is stored which is
needed at mount time.

This summary information is stored in a JFFS2_FEATURE_RWCOMPAT_DELETE. During
the mount process if there is no summary info the orignal scan process will
be executed. EBS works with NAND and NOR flashes, too.

There is a user space tool called sumtool to generate this summary
information for a JFFS2 image.

Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:29:48 +01:00
Ferenc Havasi
4ce1f56218 [JFFS2] Remove support for virtual blocks
Remove support for virtual blocks, which are build by
concatenation of multiple physical erase blocks.

For more information please read the MTD mailing list thread
"[PATCH] remove support for virtual blocks"

Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 21:08:27 +01:00
Artem B. Bityutskiy
f0507530cb [JFFS2] Solve BUG caused by frag->node representing a hole in fragtree
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 20:32:36 +01:00
Artem B. Bityutskiy
280562b210 [JFFS2] Calculate CRC check starting point correctly
When data starts from the beginning of NAND page, 'len' must be zero, not
c->wbuf_page.

Thanks to Zoltan Sogor for reporting this problem.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 20:29:56 +01:00
Artem B. Bityutskiy
8d5df40954 [JFFS2] More message formatting cleanups
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 20:27:14 +01:00
Artem B. Bityutskiy
3a69e0cd22 [JFFS2] Fix JFFS2 [mc]time handling
From: David Woodhouse <dwmw2@infradead.org>

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 20:25:59 +01:00
Artem B. Bityutskiy
01d445f89d [JFFS2] Make the JFFS2 messages a bit nicer
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 20:24:15 +01:00
Nicolas Pitre
59da721a22 [JFFS2] Teach JFFS2 about Sibley flash
Intels Sibley flash needs JFFS2 write buffer functionality

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 20:13:52 +01:00
Artem B. Bityutskiy
45ca1b509e [JFFS2] Debug code clean up - step 7
Remove more noisy debugs. Add current->pid to debug messages.
Remove bogus includes.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 19:14:35 +01:00
Artem B. Bityutskiy
3c09133739 [JFFS2] Correct buggy length checks
The previous changes introduced wrong length calculations.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 18:35:36 +01:00
Artem B. Bityutskiy
392435081e [JFFS2] Debug code clean up - step 6
Remove extra noisy debugs

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 18:33:09 +01:00
Artem B. Bityutskiy
1e0da3cb6c [JFFS2] Build fragtree in reverse order
Instead of building fragtree starting from node with the smallest version
number, start from the highest. This helps to avoid reading and checking
obsolete nodes.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 18:22:17 +01:00
Artem B. Bityutskiy
e0e3006f79 [JFFS2] Refine fragtree debug macros
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 18:19:41 +01:00
Artem B. Bityutskiy
1e900979a7 [JFFS2] Move another fragtree-related function to nodelist.c
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 18:11:59 +01:00
Andrew Lunn
737b7661e0 [JFFS2] Fix up new debug code for eCos build
The debug code cleanup broke the eCos build.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 18:06:10 +01:00
Artem B. Bityutskiy
e0d601373b [JFFS2] Debug code clean up - step 5
Replace the D1(printk()) style debugging with the new debug macros

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 18:01:24 +01:00
Artem B. Bityutskiy
f97117d153 [JFFS2] Move scattered function into related files
Move functions to read inodes into readinode.c
Move functions to handle fragtree and dentry lists into nodelist.[ch]

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 17:50:45 +01:00
Artem B. Bityutskiy
f538c96ba2 [JFFS2] Debug code clean up - step 4
Small comment cleanups. Remove a unused macro

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 17:34:21 +01:00
Ferenc Havasi
2227c0ba4b [jffs2] Remove compressor lzo and lzari
Remove unused compressor code

Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 17:31:24 +01:00
Artem B. Bityutskiy
f302cd028c [JFFS2] Namespace clean up
Rename functions to a name matching the functionality.
Remove stall debug code

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 17:17:32 +01:00
Artem B. Bityutskiy
e0c8e42f8f [JFFS2] Debug code clean up - step 3
Various simplifiactions. printk format corrections.
Convert more code to use the new debug functions.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 17:06:49 +01:00
Artem B. Bityutskiy
6dac02a5e1 [JFFS2] Fix slab panic
When JFFS22 is unable to read the root inode, the bad root inode object is not
freed and remains sticked in the jffs2_i slab cache. When we further try to
free the slab cache (e.g., on rmmod jffs2), slab allocator subsystem panics.
Fix this bug.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 16:31:04 +01:00
Artem B. Bityutskiy
61a39b6941 [JFFS2] Debug code clean up - step 2
If debugging is disabled, define debugging functions as empty macros, instead
of using Dx() explicitly.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 16:29:43 +01:00
Artem B. Bityutskiy
2b79adcca1 [JFFS2] Use f->target instead of f->dents for symlink target
JFFS2 uses f->dents to store the pointer to the symlink target string (in case
the inode is symlink). This is somewhat ugly to use the same field for
different reasons. Introduce distinct field f->target for this purpose.
Note, f->fragtree, f->dents, f->target may probably be put in a union.

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 16:25:55 +01:00
Artem B. Bityutskiy
730554d946 [JFFS2] Debug code clean up - step 1
Move debug functions into a seperate source file

Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 16:21:25 +01:00
Artem B. Bityutskiy
dae6227f71 [JFFS2] Split a large routine on several smaller.
Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-11-06 15:40:55 +01:00
Chuck Lever
0bbacc402e NFS,SUNRPC,NLM: fix unused variable warnings when CONFIG_SYSCTL is disabled
Fix some dprintk's so that NLM, NFS client, and RPC client compile
 cleanly if CONFIG_SYSCTL is disabled.

 Test plan:
 Compile kernel with CONFIG_NFS enabled and CONFIG_SYSCTL disabled.

 Signed-off-by: Chuck Lever <cel@netapp.com>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04 15:39:48 -05:00
Trond Myklebust
6bfc93ef98 NFSv4: Teach NFSv4 to cache locks when we hold a delegation
Now that we have a method of dealing with delegation recalls, actually
 enable the caching of posix and BSD locks.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04 15:39:36 -05:00
Trond Myklebust
888e694c16 NFSv4: Recover locks too when returning a delegation
Delegations allow us to cache posix and BSD locks, however when the
 delegation is recalled, we need to "flush the cache" and send
 the cached LOCK requests to the server.

 This patch sets up the mechanism for doing so.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04 15:38:11 -05:00
Trond Myklebust
43b2a33aa8 NFSv4: Fix recovery of flock() locks.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04 15:35:30 -05:00
Trond Myklebust
34ea818846 NFSv4: Return any delegations before sillyrenaming the file
I missed this one... Any form of rename will result in a delegation
 recall, so it is more efficient to return the one we hold before
 trying the rename.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04 15:35:02 -05:00
Trond Myklebust
2c56617d76 NFSv4: Fix the handling of the error NFS4ERR_OLD_STATEID
Ensure that we retry the failed operation...

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04 15:33:50 -05:00
Trond Myklebust
d530838bfa NFSv4: Fix problem with OPEN_DOWNGRADE
RFC 3530 states that for OPEN_DOWNGRADE "The share_access and share_deny
 bits specified must be exactly equal to the union of the share_access and
 share_deny bits specified for some subset of the OPENs in effect for
 current openowner on the current file.

 Setattr is currently violating the NFSv4 rules for OPEN_DOWNGRADE in that
 it may cause a downgrade from OPEN4_SHARE_ACCESS_BOTH to
 OPEN4_SHARE_ACCESS_WRITE despite the fact that there exists no open file
 with O_WRONLY access mode.

 Fix the problem by replacing nfs4_find_state() with a modified version of
 nfs_find_open_context().

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04 15:33:38 -05:00
Trond Myklebust
4cecb76ff8 NFSv4: Fix a race between open() and close()
We must not remove the nfs4_state structure from the inode open lists
 before we are in sequence lock.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04 15:32:58 -05:00
Steve French
ec58ef0328 [CIFS] Update kconfig for cifs
Add cifs extended stats configure option and reduce experimental code.

Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-11-04 09:44:33 -08:00
Linus Torvalds
0f3278d14f Merge git://oss.sgi.com:8090/oss/git/xfs-2.6 2005-11-03 16:25:58 -08:00
Nathan Scott
15c84a4701 [XFS] Remove no-longer-used qsort source.
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-04 10:51:01 +11:00
Nathan Scott
05db218a27 [XFS] Fix an inode32 regression - if no options are presented, must still
set default flags.

SGI-PV: 945242
SGI-Modid: xfs-linux-melb:xfs-kern:24292a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-04 09:49:07 +11:00
Nathan Scott
992c83a129 [XFS] Remove several no-longer-used files.
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-03 16:50:07 +11:00
Nathan Scott
7f248a81c5 [XFS] Cleanup cosmetic differences between source trees.
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-03 16:14:31 +11:00
Nathan Scott
538524aed0 [XFS] fix XFS quota for modular XFS builds
Cannot build XFS filesystem support as module with quota support.  It
works only when the XFS filesystem support is compiled into the kernel.
Menuconfig prevents from setting CONFIG_XFS_FS=m and CONFIG_XFS_QUOTA=y.

How to reproduce: configure the XFS filesystem with quota support as
module.  The resulting kernel won't have quota support compiled into
xfs.ko.

Fix: Changing the fs/xfs/Kconfig file from tristate to bool lets you
configure the quota support to be compiled into the XFS module.  The
Makefile-linux-2.6 checks only for CONFIG_XFS_QUOTA=y.

Signed-off-by: Dimitri Puzin <tristan-777@ddkom-online.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-03 13:55:06 +11:00
Nathan Scott
de69e5f44e [XFS] Add a mechanism for XFS to use the generic quota sync method.
This is now used to issue a delayed allocation flush before reporting
quota, which allows the used space quota report to match reality.

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-03 13:53:34 +11:00
Yingping Lu
bf6f05aa0b [XFS] Fixed the inconsistency between attribute b-tree intermidiate node
and leaf blocks. The problem cam from xfsqa test 117.

SGI-PV: 940655
SGI-Modid: xfs-linux:xfs-kern:201527a

Signed-off-by: Yingping Lu <yingping@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-03 10:31:47 +11:00
Steve French
cb9dbff92e [CIFS] Make CONFIG_CIFS_EXPERIMENTAL depend on CONFIG_EXPERIMENTAL
It seems logical.

Note that CONFIG_EXPERIMENTAL itself doesn't enable any code.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2005-11-02 11:37:15 -08:00
Linus Torvalds
ec1890c5df Merge git://brick.kernel.dk/data/git/linux-2.6-block 2005-11-02 08:06:02 -08:00
Nathan Scott
19d5bcf370 [XFS] Ensure fsync does not incorrectly return EIO for pages beyond EOF.
SGI-PV: 944819
SGI-Modid: xfs-linux:xfs-kern:24236a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:14:09 +11:00
Eric Sandeen
a749ee8615 [XFS] Fix calculation of reserved AGs for inodes in 32-bit inode mode
Spotted by Roger Willcocks <willcor @at@ gmail.com>

SGI-PV: 944858
SGI-Modid: xfs-linux:xfs-kern:201213a

Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:13:42 +11:00
Nathan Scott
fdc7ed75c0 [XFS] Fix boundary conditions when issuing direct IOs from large userspace
buffers.

SGI-PV: 944820
SGI-Modid: xfs-linux:xfs-kern:24223a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:13:13 +11:00
Nathan Scott
2b3b6d07f7 [XFS] Remove an unhelpful ifdef, the comment above the routine explains
the purpose well enough here.

SGI-PV: 944821
SGI-Modid: xfs-linux:xfs-kern:24214a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:12:28 +11:00
Nathan Scott
cfcbbbd089 [XFS] Remove old, broken nolog-mode code - noone plans to ever fix it.
SGI-PV: 944821
SGI-Modid: xfs-linux:xfs-kern:24213a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:12:04 +11:00
Nathan Scott
c11e2c369d [XFS] Rework fid encode/decode wrt 64 bit inums interacting with NFS.
SGI-PV: 937127
SGI-Modid: xfs-linux:xfs-kern:24201a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:11:45 +11:00
Christoph Hellwig
16259e7d95 [XFS] Endianess annotations for various allocator data structures
SGI-PV: 943272
SGI-Modid: xfs-linux:xfs-kern:201006a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:11:25 +11:00
Eric Sandeen
e2ed81fbbb [XFS] remove unused code from xfs_iomap_write_direct
SGI-PV: 943266
SGI-Modid: xfs-linux:xfs-kern:200996a

Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:10:55 +11:00
Eric Sandeen
e94af02a9c [XFS] fix old xfs_setattr mis-merge from irix; mostly harmless esp if not
using xfs rt

SGI-PV: 944632
SGI-Modid: xfs-linux:xfs-kern:200983a

Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:10:41 +11:00
Yingping Lu
91e11088f8 [XFS] Fixing size report discrepancy between ls and du caused by xfs_fsr
SGI-PV: 943908
SGI-Modid: xfs-linux:xfs-kern:200874a

Signed-off-by: Yingping Lu <yingping@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:10:24 +11:00
Yingping Lu
9af0a70c07 [XFS] Fixed a bug in reporting extent list for attribute fork running
xfs_bmap -a.

SGI-PV: 944075
SGI-Modid: xfs-linux:xfs-kern:200860a

Signed-off-by: Yingping Lu <yingping@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:09:54 +11:00
Christoph Hellwig
7f14d0a013 [XFS] Simplify pagebuf_rele Remove a conditional that can not be true
anymore and simplify the final put path a little

SGI-PV: 908809
SGI-Modid: xfs-linux:xfs-kern:200790a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:09:35 +11:00
Nathan Scott
e718eeb4fe [XFS] Rework the final mount options flag bit to make room for more.
SGI-PV: 943866
SGI-Modid: xfs-linux:xfs-kern:24030a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:09:22 +11:00
Nathan Scott
6b3f6b5b87 [XFS] Rework the dquot hash sizing heuristics.
SGI-PV: 943123
SGI-Modid: xfs-linux:xfs-kern:24012a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:08:25 +11:00
Eric Sandeen
1f730e3b53 [XFS] Add ATTR_NOSIZETOK definition for xfs_vnodeops.c change
SGI-PV: 942439
SGI-Modid: xfs-linux:xfs-kern:200185a

Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:08:10 +11:00
Nathan Scott
8a319ae494 [XFS] Disable attr2 by default, until a more appropriate time to enable
it.

SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:24002a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:07:51 +11:00
Eric Sandeen
374e2ac337 [XFS] Prevent data corruption on extending truncate case from cxfs client
SGI-PV: 942439
SGI-Modid: xfs-linux:xfs-kern:200152a

Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:07:34 +11:00
Christoph Hellwig
4750ddb0ba [XFS] Fix sparse warnings in ktrace.[ch]
SGI-PV: 943556
SGI-Modid: xfs-linux:xfs-kern:200113a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:07:23 +11:00
Christoph Hellwig
5bde1ba99c [XFS] silence gcc4 warnings. the directory ones are wrong because of
information gcc could not find out (that a directory always has a ..
entry), the others are outright gcc bugs.

SGI-PV: 943511
SGI-Modid: xfs-linux:xfs-kern:200055a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:06:18 +11:00
Nathan Scott
9dac13e7ff [XFS] Remove unused type, xfs_gap_t.
SGI-PV: 907752
SGI-Modid: xfs-linux:xfs-kern:23932a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:05:34 +11:00
Christoph Hellwig
1149d96ae8 [XFS] endianess annotations and cleanup for the quota code
SGI-PV: 943272
SGI-Modid: xfs-linux:xfs-kern:199767a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:01:12 +11:00
Nathan Scott
fa7e7d71e0 [XFS] Show additional mount options in /proc/mounts, fix up some debug
code.

SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:23926a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:00:48 +11:00
Nathan Scott
da087bad81 [XFS] Fix up a 32/64 local flags variable issue when enabling attr2 mode.
SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:23925a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:00:20 +11:00
Eric Sandeen
0116d9356b [XFS] Remove dead code in xfs_iomap_write_direct; save some stack
SGI-PV: 943266
SGI-Modid: xfs-linux:xfs-kern:199750a

Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 15:00:01 +11:00
Nathan Scott
4ce3121f67 [XFS] Update license/copyright notices to match the prefered SGI
boilerplate.

SGI-PV: 913862
SGI-Modid: xfs-linux:xfs-kern:23917a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 14:59:41 +11:00
Nathan Scott
7b71876980 [XFS] Update license/copyright notices to match the prefered SGI
boilerplate.

SGI-PV: 913862
SGI-Modid: xfs-linux:xfs-kern:23903a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 14:58:39 +11:00
Nathan Scott
a844f4510d [XFS] Remove xfs_macros.c, xfs_macros.h, rework headers a whole lot.
SGI-PV: 943122
SGI-Modid: xfs-linux:xfs-kern:23901a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 14:38:42 +11:00
Christoph Hellwig
61c1e689fb [XFS] remove unused struct xfs_ail_ticket
SGI-PV: 919278
SGI-Modid: xfs-linux:xfs-kern:199498a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 11:44:57 +11:00
Nathan Scott
fc1f8c1ca3 [XFS] Track external log/realtime device names for correct reporting in
/proc/mounts.

SGI-PV: 942984
SGI-Modid: xfs-linux:xfs-kern:23862a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 11:44:33 +11:00
Nathan Scott
4aeb664c25 [XFS] Improve buffered read throughput by removing unnecessary timer calls
that showed in ´kernel profiles.

SGI-PV: 925163
SGI-Modid: xfs-linux:xfs-kern:23861a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 11:43:58 +11:00
Nathan Scott
0fdfb3757f [XFS] Remove a null CELL macro and its one caller, not useful to anyone.
SGI-PV: 942986
SGI-Modid: xfs-linux:xfs-kern:23860a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 11:43:42 +11:00
Nathan Scott
380b5dc0e5 [XFS] Fix up an internal sort function name collision issue.
SGI-PV: 942986
SGI-Modid: xfs-linux:xfs-kern:23859a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 11:43:18 +11:00
Nathan Scott
80cce77980 [XFS] Make some extended attributes routines take const parameters, for
the FreeBSD porters.

SGI-PV: 942906
SGI-Modid: xfs-linux:xfs-kern:23845a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 11:43:04 +11:00
Nathan Scott
f74dee4276 [XFS] Ondisk format extension for extended attributes (attr2). Basically,
the data/attr forks now grow up/down from either end of the literal area,
rather than dividing the literal area into two chunks and growing both
upward.  Means we can now make much more efficient use of the attribute
space, incl. fitting DMF attributes inline in 256 byte inodes, and large
jumps in dbench3 performance numbers.  It is self enabling, but can be
forced on/off via the attr2/noattr2 mount options.

SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:23837a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:35:56 +11:00
Nathan Scott
af4e34a527 [XFS] Ondisk format extension for extended attributes (attr2). Basically,
the data/attr forks now grow up/down from either end of the literal area,
rather than dividing the literal area into two chunks and growing both
upward.  Means we can now make much more efficient use of the attribute
space, incl. fitting DMF attributes inline in 256 byte inodes, and large
jumps in dbench3 performance numbers.  It is self enabling, but can be
forced on/off via the attr2/noattr2 mount options.

SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:23836a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:35:46 +11:00
Nathan Scott
d8cc890d40 [XFS] Ondisk format extension for extended attributes (attr2). Basically,
the data/attr forks now grow up/down from either end of the literal area,
rather than dividing the literal area into two chunks and growing both
upward.  Means we can now make much more efficient use of the attribute
space, incl. fitting DMF attributes inline in 256 byte inodes, and large
jumps in dbench3 performance numbers.  It is self enabling, but can be
forced on/off via the attr2/noattr2 mount options.

SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:23835a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:34:53 +11:00
Nathan Scott
aa82daa061 [XFS] Move some code around to prepare for the upcoming extended
attributes format change (attr2).

SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:23833a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:33:33 +11:00
David Chinner
e8c8b3a79d [XFS] Introduce two new mount options (nolargeio/largeio) to allow
filesystems to expose the filesystem stripe width in stat(2) rather than
the page cache size. This allows applications requiring high bandwidth to
easily determine the optimum I/O size for the underlying filesystem. The
default is to report the page cache size (i.e. "nolargeio").

SGI-PV: 942818
SGI-Modid: xfs-linux:xfs-kern:23830a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:33:05 +11:00
Nathan Scott
ee34807a65 [XFS] Provide a mechiansm for flushing delalloc before quota reporting.
SGI-PV: 942815
SGI-Modid: xfs-linux:xfs-kern:23829a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:32:38 +11:00
Nathan Scott
c310ab6c07 [XFS] Fix signedness issues in dquot ID handling, allowing uids/gids above
MAXINT

SGI-PV: 942528
SGI-Modid: xfs-linux:xfs-kern:23828a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:31:41 +11:00
Nathan Scott
30dab21abb [XFS] Add a comment about the use of XFS_SIZE_TOKEN_WANT.
SGI-PV: 936331
SGI-Modid: xfs-linux:xfs-kern:23827a

Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:31:13 +11:00
Christoph Hellwig
c86e711ceb [XFS] only mark buffers done when all pages are uptodate in addition
replace PBF_NONE with an inverted PBF_DONE, so it's like all the other
flags.

SGI-PV: 942609
SGI-Modid: xfs-linux:xfs-kern:199136a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:29:39 +11:00
Eric Sandeen
d0cfb37305 [XFS] Stack footprint reduction for xfs_swapext (used from xfs_fsr)
SGI-PV: 913332
SGI-Modid: xfs-linux:xfs-kern:198926a

Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:29:04 +11:00
Christoph Hellwig
f538d4da8d [XFS] write barrier support Issue all log sync operations as ordered
writes.  In addition flush the disk cache on fsync if the sync cached
operation didn't sync the log to disk (this requires some additional
bookeping in the transaction and log code). If the device doesn't claim to
support barriers, the filesystem has an extern log volume or the trial
superblock write with barriers enabled failed we disable barriers and
print a warning.  We should probably fail the mount completely, but that
could lead to nasty boot failures for the root filesystem.  Not enabled by
default yet, needs more destructive testing first.

SGI-PV: 912426
SGI-Modid: xfs-linux:xfs-kern:198723a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:26:59 +11:00
Christoph Hellwig
739cafd316 [XFS] fix PBF_NONE handling
SGI-PV: 908809
SGI-Modid: xfs-linux:xfs-kern:198669a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:25:51 +11:00
Christoph Hellwig
da1650a5d6 [XFS] Add format checking to cmn_err and icmn_err
SGI-PV: 942243
SGI-Modid: xfs-linux:xfs-kern:198658a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:21:35 +11:00
Christoph Hellwig
88741a95af [XFS] remove unused pagebuf flags
SGI-PV: 908809
SGI-Modid: xfs-linux:xfs-kern:198656a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:21:14 +11:00
Christoph Hellwig
04d8b28416 [XFS] Make sure the threads and shaker in xfs_buf are de-initialized in
reverse startup order

SGI-PV: 942063
SGI-Modid: xfs-linux:xfs-kern:198651a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02 10:15:05 +11:00
Steve French
ef0eaa1336 Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-11-01 09:02:10 -08:00
Anton Altaparmakov
94b166a7cb Merge branch 'master' of /home/src/linux-2.6/ 2005-11-01 15:51:32 +00:00
Anton Altaparmakov
3aebf25bdc NTFS: Fix a stupid bug causing writes to non-initialized pages to segfault.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-11-01 15:49:31 +00:00
Jens Axboe
a362357b6c [BLOCK] Unify the seperate read/write io stat fields into arrays
Instead of having ->read_sectors and ->write_sectors, combine the two
into ->sectors[2] and similar for the other fields. This saves a branch
several places in the io path, since we don't have to care for what the
actual io direction is. On my x86-64 box, that's 200 bytes less text in
just the core (not counting the various drivers).

Signed-off-by: Jens Axboe <axboe@suse.de>
2005-11-01 09:26:16 +01:00
Dave Kleikamp
988a6490a7 JFS: set i_ctime & i_mtime on target directory when creating links
jfs has never been setting i_ctime or i_mtime when creating either hard
or symbolic links.  I'm surprised nobody had noticed until now.

Thanks to Chris Spiegel for reporting the problem.

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2005-10-31 16:53:04 -06:00
Andrea Arcangeli
659603ef69 [PATCH] fix __writeback_single_inode WARN_ON
When the inode count is zero in inode writeback, the

	WARN_ON(!(inode->i_state & I_WILL_FREE));

is broken, and needs to test for either I_WILL_FREE|I_FREEING.

When the inode is in I_FREEING state, it's already out of the visibility
of the vm so it can't be freed so it doesn't require the __iget and the
generic_delete_inode path can call the sync internally to the lowlevel
fs callback during the last iput. So the inode being in I_FREEING is
also a valid condition for calling the sync with i_count == 0.

The specific stack trace is this:

  0xc00000007b8fb6e0  0xc00000000010118c  .__writeback_single_inode +0x5c
  0xc00000007b8fb6e0  0xc0000000001014dc (lr) .sync_inode +0x3c
  0xc00000007b8fb790  0xc0000000001014dc  .sync_inode +0x3c
  0xc00000007b8fb820  0xc0000000001a5020  .ext2_sync_inode +0x64
  0xc00000007b8fb8f0  0xc0000000001a65b4  .ext2_truncate +0x3f8
  0xc00000007b8fba40  0xc0000000001a6940  .ext2_delete_inode +0xdc
  0xc00000007b8fbac0  0xc0000000000f7a5c  .generic_delete_inode +0x124
  0xc00000007b8fbb50  0xc0000000000f5fe0  .iput +0xb8
  0xc00000007b8fbbe0  0xc0000000000e9fd4  .sys_unlink +0x2a8
  0xc00000007b8fbd10  0xc00000000001048c  .ret_from_syscall_1 +0x0

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-31 14:22:04 -08:00
Steve French
53b2ec5518 Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-10-31 08:36:11 -08:00
Anton Altaparmakov
1f04c0a24b Merge branch 'master' of /usr/src/ntfs-2.6/ 2005-10-31 10:06:46 +00:00
Paul Mackerras
23fd07750a Merge ../linux-2.6 by hand 2005-10-31 13:37:12 +11:00
Pekka Enberg
ad2c1604da [PATCH] fat: Remove duplicate directory scanning code
This patch removes duplicate directory scanning code from fs/fat/dir.c.  The
two functions that share identical code are fat_readdirx() and
fat_search_long().  This patch also renames fat_readdirx to __fat_readdir().

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00
OGAWA Hirofumi
9131dd4256 [PATCH] fat: remove the unneeded vfat_find() in vfat_rename()
Now, vfat_rename() is using vfat_find() for sanity check.  This removes that
sanity check, the cost of sanity check is too high.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00
OGAWA Hirofumi
451cbaa1c3 [PATCH] fat: cleanup and optimization of checksum
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00
Tim Schmielau
4e57b68178 [PATCH] fix missing includes
I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.

In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch.  This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other.  So if any
hunk rejects or gets in the way of other patches, just drop it.  My scripts
will pick it up again in the next round.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00
Andrew Morton
a3e713b5fd [PATCH] __bread oops fix
If a filesystem passes an idiotic blocksize into bread(), __getblk_slow() will
warn and will return NULL.  We have a report (from Hubert Tonneau
<hubert.tonneau@fullpliant.org>) of isofs_fill_super() doing this (passing in
a silly block size) against an unplugged CDROM drive.

But a couple of __getblk_slow() callers forgot to check for the NULL bh, hence
oops.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:27 -08:00
Alexey Dobriyan
b3099b48da [PATCH] fs/attr.c: remove BUG()
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:27 -08:00
Glauber de Oliveira Costa
2973dfdb87 [PATCH] Test for sb_getblk return value
This patch adds tests for the return value of sb_getblk() in the ext2/3
filesystems.  In fs/buffer.c it is stated that the getblk() function never
fails.  However, it does can return NULL in some situations due to I/O
errors, which may lead us to NULL pointer dereferences

Signed-off-by: Glauber de Oliveira Costa <glommer@br.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:26 -08:00
Andrea Arcangeli
7f04c26d71 [PATCH] fix nr_unused accounting, and avoid recursing in iput with I_WILL_FREE set
list_move(&inode->i_list, &inode_in_use);
 		} else {
 			list_move(&inode->i_list, &inode_unused);
+			inodes_stat.nr_unused++;
 		}
 	}
 	wake_up_inode(inode);

Are you sure the above diff is correct? It was added somewhere between
2.6.5 and 2.6.8. I think it's wrong.

The only way I can imagine the i_count to be zero in the above path, is
that I_WILL_FREE is set.  And if I_WILL_FREE is set, then we must not
increase nr_unused.  So I believe the above change is buggy and it will
definitely overstate the number of unused inodes and it should be backed
out.

Note that __writeback_single_inode before calling __sync_single_inode, can
drop the spinlock and we can have both the dirty and locked bitflags clear
here:

		spin_unlock(&inode_lock);
		__wait_on_inode(inode);
		iput(inode);
XXXXXXX
		spin_lock(&inode_lock);
	}
	use inode again here

a construct like the above makes zero sense from a reference counting
standpoint.

Either we don't ever use the inode again after the iput, or the
inode_lock should be taken _before_ executing the iput (i.e. a __iput
would be required). Taking the inode_lock after iput means the iget was
useless if we keep using the inode after the iput.

So the only chance the 2.6 was safe to call __writeback_single_inode
with the i_count == 0, is that I_WILL_FREE is set (I_WILL_FREE will
prevent the VM to free the inode in XXXXX).

Potentially calling the above iput with I_WILL_FREE was also wrong
because it would recurse in iput_final (the second mainline bug).

The below (untested) patch fixes the nr_unused accounting, avoids recursing
in iput when I_WILL_FREE is set and makes sure (with the BUG_ON) that we
don't corrupt memory and that all holders that don't set I_WILL_FREE, keeps
a reference on the inode!

Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:26 -08:00
Ben Dooks
381be25458 [PATCH] ext3: sparse fixes
Fix warnings from sparse due to un-declared functions that should either
have a header file or have been declared static

 fs/ext2/bitmap.c:14:15: warning: symbol 'ext2_count_free' was not declared. Should it be static?
 fs/ext2/namei.c:92:15: warning: symbol 'ext2_get_parent' was not declared. Should it be static?
 fs/ext3/bitmap.c:15:15: warning: symbol 'ext3_count_free' was not declared. Should it be static?
 fs/ext3/namei.c:1013:15: warning: symbol 'ext3_get_parent' was not declared. Should it be static?
 fs/ext3/xattr.c:214:1: warning: symbol 'ext3_xattr_block_get' was not declared. Should it be static?
 fs/ext3/xattr.c:358:1: warning: symbol 'ext3_xattr_block_list' was not declared. Should it be static?
 fs/ext3/xattr.c:630:1: warning: symbol 'ext3_xattr_block_find' was not declared. Should it be static?
 fs/ext3/xattr.c:863:1: warning: symbol 'ext3_xattr_ibody_find' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:25 -08:00
Oleg Nesterov
1291cf4163 [PATCH] fix de_thread() vs do_coredump() deadlock
de_thread() sends SIGKILL to all sub-threads and waits them to die in 'D'
state.  It is possible that one of the threads already dequeued coredump
signal.  When de_thread() unlocks ->sighand->lock that thread can enter
do_coredump()->coredump_wait() and cause a deadlock.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:25 -08:00
Miklos Szeredi
1779381dea [PATCH] fuse: spelling fixes
Correct some typos and inconsistent use of "initialise" vs "initialize" in
comments.  Reported by Ioannis Barkas.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:24 -08:00
Glauber de Oliveira Costa
5b11687924 [PATCH] Locking problems while EXT3FS_DEBUG on
I noticed some problems while running ext3 with the debug flag set on.
More precisely, I was unable to umount the filesystem.  Some investigation
took me to the patch that follows.

At a first glance , the lock/unlock I've taken out seems really not
necessary, as the main code (outside debug) does not lock the super.  The
only additional danger operations that debug code introduces seems to be
related to bitmap, but bitmap operations tends to be all atomic anyway.

I also took the opportunity to fix 2 spelling errors.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:23 -08:00
Oleg Nesterov
2384f55f8a [PATCH] coredump_wait() cleanup
This patch deletes pointless code from coredump_wait().

1. It does useless mm->core_waiters inc/dec under mm->mmap_sem,
   but any changes to ->core_waiters have no effect until we drop
   ->mmap_sem.

2. It calls yield() for absolutely unknown reason.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:23 -08:00
Kirill Korotaev
e954365971 [PATCH] proc: fix of error path in proc_get_inode()
This patch fixes incorrect error path in proc_get_inode(), when module
can't be get due to being unloaded.  When try_module_get() fails, this
function puts de(!) and still returns inode with non-getted de.

There are still unresolved known bugs in proc yet to be fixed:
- proc_dir_entry tree is managed without any serialization
- create_proc_entry() doesn't setup de->owner anyhow,
   so setting it later manually is inatomic.
- looks like almost all modules do not care whether
   it's de->owner is set...

Signed-Off-By: Denis Lunev <den@sw.ru>
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:21 -08:00
Miklos Szeredi
f12ec44070 [PATCH] fuse: clean up dead code related to nfs exporting
Remove last remains of NFS exportability support.

The code is actually buggy (as reported by Akshat Aranya), since 'alias'
will be leaked if it's non-null and alias->d_flags has DCACHE_DISCONNECTED.

This is not an active bug, since there will never be any disconnected
dentries.  But it's better to get rid of the unnecessary complexity anyway.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:21 -08:00
Oleg Nesterov
932aeafbe8 [PATCH] fix de_thread vs it_real_fn() deadlock
de_thread() calls del_timer_sync(->real_timer) under ->sighand->siglock.
This is deadlockable, it_real_fn sends a signal and needs this lock too.

Also, delete unneeded ->real_timer.data assignment.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:19 -08:00
Eric Dumazet
2f51201662 [PATCH] reduce sizeof(struct file)
Now that RCU applied on 'struct file' seems stable, we can place f_rcuhead
in a memory location that is not anymore used at call_rcu(&f->f_rcuhead,
file_free_rcu) time, to reduce the size of this critical kernel object.

The trick I used is to move f_rcuhead and f_list in an union called f_u

The callers are changed so that f_rcuhead becomes f_u.fu_rcuhead and f_list
becomes f_u.f_list

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:19 -08:00
Miklos Szeredi
42e50a5a69 [PATCH] open: cleanup in lookup_flags()
lookup_flags() is only called from the non-create case, so it needn't check
for O_CREAT|O_EXCL.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: Al Viro <viro@ftp.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>
2005-10-30 17:37:18 -08:00
Eric W. Biederman
a928972864 [PATCH] Don't uselessly export task_struct to userspace in core dumps
task_struct is an internal structure to the kernel with a lot of good
information, that is probably interesting in core dumps.  However there is
no way for user space to know what format that information is in making it
useless.

I grepped the GDB 6.3 source code and NT_TASKSTRUCT while defined is not
used anywhere else.  So I would be surprised if anyone notices it is
missing.

In addition exporting kernel pointers to all the interesting kernel data
structures sounds like the very definition of an information leak.  I
haven't a clue what someone with evil intentions could do with that
information, but in any attack against the kernel it looks like this is the
perfect tool for aiming that attack.

So since NT_TASKSTRUCT is useless as currently defined and is potentially
dangerous, let's just not export it.

(akpm: Daniel Jacobowitz <dan@debian.org> "would be amazed" if anything was
using NT_TASKSTRUCT).

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:18 -08:00
Christoph Hellwig
9c0cbd54ce [PATCH] TIOC* compat ioctl handling
TIOCSTART and TIOCSTOP are defined in asm/ioctls.h and asm/termios.h by
various architectures but not actually implemented anywhere but in the IRIX
compatibility layer, so remove their COMPATIBLE_IOCTL from parisc, ppc64
and sparc64.

Move the TIOCSLTC COMPATIBLE_IOCTL to common code, guided by an ifdef to
only show up on architectures that support it (same as the code handling it
in tty_ioctl.c), aswell as it's brother TIOCGLTC that wasn't handled so
far.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:17 -08:00
Oleg Nesterov
9e4e23bccb [PATCH] little de_thread() cleanup
Trivial, saves one 'if' branch in de_thread().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:17 -08:00
James Lamanna
833d304b22 [PATCH] reiserfs: [kv]free() checking cleanup
Signed-off-by: James Lamanna <jlamanna@gmail.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:17 -08:00
Jan Kara
aaa4059bc2 [PATCH] ext3: Fix unmapped buffers in transaction's lists
Fix the problem (BUG 4964) with unmapped buffers in transaction's
t_sync_data list.  The problem is we need to call filesystem's own
invalidatepage() from block_write_full_page().

block_write_full_page() must call filesystem's invalidatepage().  Otherwise
following nasty race can happen:

   proc 1                                        proc 2
   ------                                        ------
- write some new data to 'offset'
  => bh gets to the transactions data list
                                              - starts truncate
                                                => i_size set to new size
- mpage_writepages()
  - ext3_ordered_writepage() to 'offset'
    - block_write_full_page()
      - page->index > end_index+1
        - block_invalidatepage()
          - discard_buffer()
            - clear_buffer_mapped()

- commit triggers and finds unmapped buffer - BOOM!

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:17 -08:00
James Morris
d381d8a9a0 [PATCH] SELinux: canonicalize getxattr()
This patch allows SELinux to canonicalize the value returned from
getxattr() via the security_inode_getsecurity() hook, which is called after
the fs level getxattr() function.

The purpose of this is to allow the in-core security context for an inode
to override the on-disk value.  This could happen in cases such as
upgrading a system to a different labeling form (e.g.  standard SELinux to
MLS) without needing to do a full relabel of the filesystem.

In such cases, we want getxattr() to return the canonical security context
that the kernel is using rather than what is stored on disk.

The implementation hooks into the inode_getsecurity(), adding another
parameter to indicate the result of the preceding fs-level getxattr() call,
so that SELinux knows whether to compare a value obtained from disk with
the kernel value.

We also now allow getxattr() to work for mountpoint labeled filesystems
(i.e.  mount with option context=foo_t), as we are able to return the
kernel value to the user.

Signed-off-by: James Morris <jmorris@namei.org>
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>
2005-10-30 17:37:11 -08:00
Brian Gerst
0d078f6f96 [PATCH] CONFIG_IA32
Add CONFIG_X86_32 for i386.  This allows selecting options that only apply
to 32-bit systems.

(X86 && !X86_64) becomes X86_32
(X86 ||  X86_64) becomes X86

Signed-off-by: Brian Gerst <bgerst@didntduck.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:10 -08:00
Trond Myklebust
d3f8cf4899 [PATCH] NFS: Remove unbalanced spin_unlock() calls from nfs_refresh_inode()
Doh!

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 14:46:47 -08:00
Anton Altaparmakov
07b188ab77 Merge branch 'master' of /usr/src/ntfs-2.6/ 2005-10-30 21:00:04 +00:00
Adam Litke
2e9b367c22 [PATCH] hugetlb: overcommit accounting check
Basic overcommit checking for hugetlb_file_map() based on an implementation
used with demand faulting in SLES9.

Since demand faulting can't guarantee the availability of pages at mmap
time, this patch implements a basic sanity check to ensure that the number
of huge pages required to satisfy the mmap are currently available.
Despite the obvious race, I think it is a good start on doing proper
accounting.  I'd like to work towards an accounting system that mimics the
semantics of normal pages (especially for the MAP_PRIVATE/COW case).  That
work is underway and builds on what this patch starts.

Huge page shared memory segments are simpler and still maintain their
commit on shmget semantics.

Signed-off-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:43 -07:00
Adam Litke
4c88726597 [PATCH] hugetlb: demand fault handler
Below is a patch to implement demand faulting for huge pages.  The main
motivation for changing from prefaulting to demand faulting is so that huge
page memory areas can be allocated according to NUMA policy.

Thanks to consolidated hugetlb code, switching the behavior requires changing
only one fault handler.  The bulk of the patch just moves the logic from
hugelb_prefault() to hugetlb_pte_fault() and find_get_huge_page().

Signed-off-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:43 -07:00
Christoph Hellwig
0b1533f67c [PATCH] cleanup hugelbfs_forget_inode
Reformat hugelbfs_forget_inode and add the missing but harmless
write_inode_now call.  It looks the same as generic_forget_inode now except
for the call to truncate_hugepages instead of truncate_inode_pages.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:43 -07:00
Christoph Hellwig
6b09b9df05 [PATCH] kill hugelbfs_do_delete_inode
hugetlbfs_do_delete_inode is the same as generic_delete_inode now, so remove
it in favour of the latter.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:43 -07:00
Christoph Hellwig
149f4211af [PATCH] hugetlbfs: clean up hugetlbfs_delete_inode
Make hugetlbfs looks the same as generic_detelte_inode, fixing a bunch of
missing updates to it at the same time.  Rename it to
hugetlbfs_do_delete_inode and add a real hugetlbfs_delete_inode that
implements ->delete_inode.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:43 -07:00
Christoph Hellwig
96527980d4 [PATCH] hugetlbfs: move free_inodes accounting
Move hugetlbfs accounting into ->alloc_inode / ->destroy_inode.  This keeps
the code simpler, fixes a loeak where a failing inode allocation wouldn't
decrement the counter and moves hugetlbfs_delete_inode and
hugetlbfs_forget_inode closer to their generic counterparts.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:43 -07:00
Hugh Dickins
4c21e2f244 [PATCH] mm: split page table lock
Christoph Lameter demonstrated very poor scalability on the SGI 512-way, with
a many-threaded application which concurrently initializes different parts of
a large anonymous area.

This patch corrects that, by using a separate spinlock per page table page, to
guard the page table entries in that page, instead of using the mm's single
page_table_lock.  (But even then, page_table_lock is still used to guard page
table allocation, and anon_vma allocation.)

In this implementation, the spinlock is tucked inside the struct page of the
page table page: with a BUILD_BUG_ON in case it overflows - which it would in
the case of 32-bit PA-RISC with spinlock debugging enabled.

Splitting the lock is not quite for free: another cacheline access.  Ideally,
I suppose we would use split ptlock only for multi-threaded processes on
multi-cpu machines; but deciding that dynamically would have its own costs.
So for now enable it by config, at some number of cpus - since the Kconfig
language doesn't support inequalities, let preprocessor compare that with
NR_CPUS.  But I don't think it's worth being user-configurable: for good
testing of both split and unsplit configs, split now at 4 cpus, and perhaps
change that to 8 later.

There is a benefit even for singly threaded processes: kswapd can be attacking
one part of the mm while another part is busy faulting.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:42 -07:00
Hugh Dickins
deceb6cd17 [PATCH] mm: follow_page with inner ptlock
Final step in pushing down common core's page_table_lock.  follow_page no
longer wants caller to hold page_table_lock, uses pte_offset_map_lock itself;
and so no page_table_lock is taken in get_user_pages itself.

But get_user_pages (and get_futex_key) do then need follow_page to pin the
page for them: take Daniel's suggestion of bitflags to follow_page.

Need one for WRITE, another for TOUCH (it was the accessed flag before:
vanished along with check_user_page_readable, but surely get_numa_maps is
wrong to mark every page it finds as accessed), another for GET.

And another, ANON to dispose of untouched_anonymous_page: it seems silly for
that to descend a second time, let follow_page observe if there was no page
table and return ZERO_PAGE if so.  Fix minor bug in that: check VM_LOCKED -
make_pages_present ought to make readonly anonymous present.

Give get_numa_maps a cond_resched while we're there.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:41 -07:00
Hugh Dickins
508034a32b [PATCH] mm: unmap_vmas with inner ptlock
Remove the page_table_lock from around the calls to unmap_vmas, and replace
the pte_offset_map in zap_pte_range by pte_offset_map_lock: all callers are
now safe to descend without page_table_lock.

Don't attempt fancy locking for hugepages, just take page_table_lock in
unmap_hugepage_range.  Which makes zap_hugepage_range, and the hugetlb test in
zap_page_range, redundant: unmap_vmas calls unmap_hugepage_range anyway.  Nor
does unmap_vmas have much use for its mm arg now.

The tlb_start_vma and tlb_end_vma in unmap_page_range are now called without
page_table_lock: if they're implemented at all, they typically come down to
flush_cache_range (usually done outside page_table_lock) and flush_tlb_range
(which we already audited for the mprotect case).

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:41 -07:00
Hugh Dickins
705e87c0c3 [PATCH] mm: pte_offset_map_lock loops
Convert those common loops using page_table_lock on the outside and
pte_offset_map within to use just pte_offset_map_lock within instead.

These all hold mmap_sem (some exclusively, some not), so at no level can a
page table be whipped away from beneath them.  But whereas pte_alloc loops
tested with the "atomic" pmd_present, these loops are testing with pmd_none,
which on i386 PAE tests both lower and upper halves.

That's now unsafe, so add a cast into pmd_none to test only the vital lower
half: we lose a little sensitivity to a corrupt middle directory, but not
enough to worry about.  It appears that i386 and UML were the only
architectures vulnerable in this way, and pgd and pud no problem.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:40 -07:00
Hugh Dickins
c74df32c72 [PATCH] mm: ptd_alloc take ptlock
Second step in pushing down the page_table_lock.  Remove the temporary
bridging hack from __pud_alloc, __pmd_alloc, __pte_alloc: expect callers not
to hold page_table_lock, whether it's on init_mm or a user mm; take
page_table_lock internally to check if a racing task already allocated.

Convert their callers from common code.  But avoid coming back to change them
again later: instead of moving the spin_lock(&mm->page_table_lock) down,
switch over to new macros pte_alloc_map_lock and pte_unmap_unlock, which
encapsulate the mapping+locking and unlocking+unmapping together, and in the
end may use alternatives to the mm page_table_lock itself.

These callers all hold mmap_sem (some exclusively, some not), so at no level
can a page table be whipped away from beneath them; and pte_alloc uses the
"atomic" pmd_present to test whether it needs to allocate.  It appears that on
all arches we can safely descend without page_table_lock.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:40 -07:00
Hugh Dickins
365e9c87a9 [PATCH] mm: update_hiwaters just in time
update_mem_hiwater has attracted various criticisms, in particular from those
concerned with mm scalability.  Originally it was called whenever rss or
total_vm got raised.  Then many of those callsites were replaced by a timer
tick call from account_system_time.  Now Frank van Maarseveen reports that to
be found inadequate.  How about this?  Works for Frank.

Replace update_mem_hiwater, a poor combination of two unrelated ops, by macros
update_hiwater_rss and update_hiwater_vm.  Don't attempt to keep
mm->hiwater_rss up to date at timer tick, nor every time we raise rss (usually
by 1): those are hot paths.  Do the opposite, update only when about to lower
rss (usually by many), or just before final accounting in do_exit.  Handle
mm->hiwater_vm in the same way, though it's much less of an issue.  Demand
that whoever collects these hiwater statistics do the work of taking the
maximum with rss or total_vm.

And there has been no collector of these hiwater statistics in the tree.  The
new convention needs an example, so match Frank's usage by adding a VmPeak
line above VmSize to /proc/<pid>/status, and also a VmHWM line above VmRSS
(High-Water-Mark or High-Water-Memory).

There was a particular anomaly during mremap move, that hiwater_vm might be
captured too high.  A fleeting such anomaly remains, but it's quickly
corrected now, whereas before it would stick.

What locking?  None: if the app is racy then these statistics will be racy,
it's not worth any overhead to make them exact.  But whenever it suits,
hiwater_vm is updated under exclusive mmap_sem, and hiwater_rss under
page_table_lock (for now) or with preemption disabled (later on): without
going to any trouble, minimize the time between reading current values and
updating, to minimize those occasions when a racing thread bumps a count up
and back down in between.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:39 -07:00
Nick Piggin
b5810039a5 [PATCH] core remove PageReserved
Remove PageReserved() calls from core code by tightening VM_RESERVED
handling in mm/ to cover PageReserved functionality.

PageReserved special casing is removed from get_page and put_page.

All setting and clearing of PageReserved is retained, and it is now flagged
in the page_alloc checks to help ensure we don't introduce any refcount
based freeing of Reserved pages.

MAP_PRIVATE, PROT_WRITE of VM_RESERVED regions is tentatively being
deprecated.  We never completely handled it correctly anyway, and is be
reintroduced in future if required (Hugh has a proof of concept).

Once PageReserved() calls are removed from kernel/power/swsusp.c, and all
arch/ and driver code, the Set and Clear calls, and the PG_reserved bit can
be trivially removed.

Last real user of PageReserved is swsusp, which uses PageReserved to
determine whether a struct page points to valid memory or not.  This still
needs to be addressed (a generic page_is_ram() should work).

A last caveat: the ZERO_PAGE is now refcounted and managed with rmap (and
thus mapcounted and count towards shared rss).  These writes to the struct
page could cause excessive cacheline bouncing on big systems.  There are a
number of ways this could be addressed if it is an issue.

Signed-off-by: Nick Piggin <npiggin@suse.de>

Refcount bug fix for filemap_xip.c

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:39 -07:00
Hugh Dickins
4294621f41 [PATCH] mm: rss = file_rss + anon_rss
I was lazy when we added anon_rss, and chose to change as few places as
possible.  So currently each anonymous page has to be counted twice, in rss
and in anon_rss.  Which won't be so good if those are atomic counts in some
configurations.

Change that around: keep file_rss and anon_rss separately, and add them
together (with get_mm_rss macro) when the total is needed - reading two
atomics is much cheaper than updating two atomics.  And update anon_rss
upfront, typically in memory.c, not tucked away in page_add_anon_rmap.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:38 -07:00
Hugh Dickins
404351e67a [PATCH] mm: mm_init set_mm_counters
How is anon_rss initialized?  In dup_mmap, and by mm_alloc's memset; but
that's not so good if an mm_counter_t is a special type.  And how is rss
initialized?  By set_mm_counter, all over the place.  Come on, we just need to
initialize them both at once by set_mm_counter in mm_init (which follows the
memcpy when forking).

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:38 -07:00
Andi Kleen
dfcd3c0dc4 [PATCH] Convert mempolicies to nodemask_t
The NUMA policy code predated nodemask_t so it used open coded bitmaps.
Convert everything to nodemask_t.  Big patch, but shouldn't have any actual
behaviour changes (except I removed one unnecessary check against
node_online_map and one unnecessary BUG_ON)

Signed-off-by: "Andi Kleen" <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:35 -07:00
Pete Zaitcev
c36fc889b5 [PATCH] usb: Patch for USBDEVFS_IOCTL from 32-bit programs
Dell supplied me with the following test:

#include<stdio.h>
#include<errno.h>
#include<sys/ioctl.h>
#include<fcntl.h>
#include<linux/usbdevice_fs.h>

main(int argc,char*argv[])
{
   struct usbdevfs_hub_portinfo hubPortInfo = {0};
   struct usbdevfs_ioctl command = {0};
   command.ifno = 0;
   command.ioctl_code = USBDEVFS_HUB_PORTINFO;
   command.data = (void*)&hubPortInfo;
   int fd, ret;
   if(argc != 2) {
     fprintf(stderr,"Usage: %s /proc/bus/usb/<BusNo>/<HubID>\n",argv[0]);
     fprintf(stderr,"Example: %s /proc/bus/usb/001/001\n",argv[0]);
     exit(1);
   }
   errno = 0;
   fd = open(argv[1],O_RDWR);
   if(fd < 0) {
     perror("open failed:");
     exit(errno);
   }
   errno = 0;
   ret = ioctl(fd,USBDEVFS_IOCTL,&command);
   printf("IOCTL return status:%d\n",ret);
   if(ret<0) {
     perror("IOCTL failed:");
     close(fd);
     exit(3);
   } else {
       printf("IOCTL passed:Num of ports %d\n",hubPortInfo.nports);
       close(fd);
       exit(0);
   }
   return 0;
}

I have verified that it breaks if built in 32 bit mode on x86_64 and that
the patch below fixes it.

Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28 16:47:46 -07:00
Peter Osterlund
6cd37cda7e [PATCH] Fix ext3 warning for unused var
Fix compile warning in ext3 quota code.

Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28 13:57:57 -07:00
Linus Torvalds
84860bf064 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2005-10-28 13:09:47 -07:00
Linus Torvalds
8caf89157d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 2005-10-28 12:44:24 -07:00
Dave Kleikamp
7038f1cbac JFS: make sure right-most xtree pages have header.next set to zero
The xtTruncate code was only doing this for leaf pages.  When a file is
horribly fragmented, we may truncate a file leaving an internal page with
an invalid head.next field, which may cause a stale page to be referenced.

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2005-10-28 13:27:40 -05:00
Greg KH
6fbfddcb52 Merge ../bleed-2.6 2005-10-28 10:13:16 -07:00
Greg Kroah-Hartman
53f4654272 [PATCH] Driver Core: fix up all callers of class_device_create()
The previous patch adding the ability to nest struct class_device
changed the paramaters to the call class_device_create().  This patch
fixes up all in-kernel users of the function.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28 09:52:52 -07:00
Kay Sievers
a7fd67062e [PATCH] add sysfs attr to re-emit device hotplug event
A "coldplug + udevstart" can be simple like this:
  for i in /sys/block/*/*/uevent; do echo 1 > $i; done
  for i in /sys/class/*/*/uevent; do echo 1 > $i; done
  for i in /sys/bus/*/devices/*/uevent; do echo 1 > $i; done

Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28 09:52:51 -07:00
Linus Torvalds
0ee40c6628 Merge branch 'for-linus' of git://brick.kernel.dk/data/git/linux-2.6-block 2005-10-28 08:53:00 -07:00
Al Viro
c4cdd03831 [PATCH] gfp_t: reiserfs mapping_set_gfp_mask() use
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28 08:16:51 -07:00
Al Viro
27496a8c67 [PATCH] gfp_t: fs/*
- ->releasepage() annotated (s/int/gfp_t), instances updated
 - missing gfp_t in fs/* added
 - fixed misannotation from the original sweep caught by bitwise checks:
   XFS used __nocast both for gfp_t and for flags used by XFS allocator.
   The latter left with unsigned int __nocast; we might want to add a
   different type for those but for now let's leave them alone.  That,
   BTW, is a case when __nocast use had been actively confusing - it had
   been used in the same code for two different and similar types, with
   no way to catch misuses.  Switch of gfp_t to bitwise had caught that
   immediately...

One tricky bit is left alone to be dealt with later - mapping->flags is
a mix of gfp_t and error indications.  Left alone for now.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28 08:16:47 -07:00
Al Viro
af4ca457ea [PATCH] gfp_t: infrastructure
Beginning of gfp_t annotations:

 - -Wbitwise added to CHECKFLAGS
 - old __bitwise renamed to __bitwise__
 - __bitwise defined to either __bitwise__ or nothing, depending on
   __CHECK_ENDIAN__ being defined
 - gfp_t switched from __nocast to __bitwise__
 - force cast to gfp_t added to __GFP_... constants
 - new helper - gfp_zone(); extracts zone bits out of gfp_t value and casts
   the result to int

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28 08:16:46 -07:00
Chen, Kenneth W
20e5c81fcf [patch] remove gendisk->stamp_idle field
struct gendisk has these two fields: stamp, stamp_idle.  Update to
stamp_idle is always in sync with stamp and they are always the same.
Therefore, it does not add any value in having two fields tracking
same timestamp.  Suggest to remove it.

Also, we should only update gendisk stats with non-zero value.
Advantage is that we don't have to needlessly calculate memory address,
and then add zero to the content.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
2005-10-28 08:15:30 +02:00
Paul Mackerras
4542437679 Merge in v2.6.14 by hand 2005-10-28 13:38:53 +10:00
Trond Myklebust
bec273b491 NFS: Allow files that are open for write to invalidate caches
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:45 -04:00
Trond Myklebust
16c32b71bc NFSv4: Convert unnecessary XDR warning messages into dprintk()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:45 -04:00
Trond Myklebust
4f9838c7ec NFSv4: Add post-op attributes to NFSv4 write and commit callbacks.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:44 -04:00
Trond Myklebust
16e429596d NFSv4: Add post-op attributes to nfs4_proc_remove()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:44 -04:00
Trond Myklebust
6caf2c8276 NFSv4: Add post-op attributes to nfs4_proc_rename()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:43 -04:00
Trond Myklebust
91ba2eeec5 NFSv4: Add post-op attributes to nfs4_proc_link()
Optimise attribute revalidation when hardlinking. Add post-op attributes
 for the directory and the original inode.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:42 -04:00
Trond Myklebust
cf80955614 NFS: Ensure that nfs_link() instantiates the dentry correctly
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:42 -04:00
Trond Myklebust
516a6af641 NFS: Add optional post-op getattr instruction to the NFSv4 file close.
"Optional" means that the close call will not fail if the getattr
 at the end of the compound fails.
 If it does succeed, try to refresh inode attributes.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:41 -04:00
Trond Myklebust
3338c143b4 NFS: Optimise attribute revalidation on close().
Only force a getattr in nfs_file_flush() if the attribute
 cache is stale.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:41 -04:00
Trond Myklebust
56ae19f38f NFSv4: Add directory post-op attributes to the CREATE operations.
Since the directory attributes change every time we CREATE a file,
 we might as well pick up the new directory attributes in the same
 compound.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:40 -04:00
Chuck Lever
0c70b50150 NFS: nfs_lookup doesn't need to revalidate the parent directory's inode
nfs_lookup() used to consult a lookup cache before trying an actual wire
 lookup operation.  The lookup cache would be invalid, of course, if the
 parent directory's mtime had changed, so nfs_lookup performed an inode
 revalidation on the parent.

 Since nfs_lookup() doesn't use a cache anymore, the revalidation is no
 longer necessary.  There are cases where it will generate a lot of
 unnecessary GETATTR traffic.

 See http://bugzilla.linux-nfs.org/show_bug.cgi?id=9

 Test-plan:
 Use lndir and "rm -rf" and watch for excess GETATTR traffic or application
 level errors.

 Signed-off-by: Chuck Lever <cel@netapp.com>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:40 -04:00
Trond Myklebust
decf491f30 NFS: Don't let nfs_end_data_update() clobber attribute update information
Since we almost always call nfs_end_data_update() after we called
 nfs_refresh_inode(), we now end up marking the inode metadata
 as needing revalidation immediately after having updated it.

 This patch rearranges things so that we mark the inode as needing
 revalidation _before_ we call nfs_refresh_inode() on those operations
 that need it.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:39 -04:00
Trond Myklebust
33801147a8 NFS: Optimise inode attribute cache updates
Allow nfs_refresh_inode() also to update attributes on the inode if the
 RPC call was sent after the last call to nfs_update_inode().

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:39 -04:00
Trond Myklebust
913a70fc17 NFS: Convert cache_change_attribute into a jiffy-based value
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:38 -04:00
Trond Myklebust
0e574af1be NFS: Cleanup initialisation of struct nfs_fattr
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 22:12:38 -04:00
Trond Myklebust
4c2cb58c55 Merge /home/trondmy/scm/kernel/git/torvalds/linux-2.6 2005-10-27 19:12:49 -04:00
Trond Myklebust
34123da66e NFS: Fix a bad cast in nfs3_read_done
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27 19:10:09 -04:00
Steve French
0753ca7bc2 [CIFS] Change pragma pack(1) to attribute(packed) to allow cifs on arm to access
unaligned structures coming in off the wire

gcc on arm processors generates very odd code with pragma pack specified -
although it does pack the structures in some sense - it does not allow you
to access unaligned elements in nested structures at the right offset as other
architectures do.  Oddly enough though, specifying the structures as packed
the long way - one by one with the packed attribute does work.  Rather than
fighting over whether this is a gcc bug or some obscure side effect
of pragma pack, it is easier to do what most (all but 96 other places in
the kernel) do - and replace pragma pack with dozens of attribute(packed)
structure qualifiers.  Much more verbose ... but at least it works.

Signed-off-by: David Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>  CG: -----------------------------------------------------------------------
2005-10-27 13:55:12 -07:00
Steve French
04290949b3 Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-10-27 12:53:03 -07:00
Peter Wainwright
94c1d31845 [PATCH] Fix HFS+ to free up the space when a file is deleted.
fsck_hfs reveals lots of temporary files accumulating in the hidden
directory "\000\000\000HFS+ Private Data".  According to the HFS+
documentation these are files which are unlinked while in use.  However,
there may be a bug in the Linux hfsplus implementation which causes this to
happen even when the files are not in use.  It looks like the "opencnt"
field is never initialized as (I think) it should be in hfsplus_read_inode.
 This means that a file can appear to be still in use when in fact it has
been closed.  This patch seems to fix it for me.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-26 10:39:43 -07:00
Anton Altaparmakov
47c564e10f Merge branch 'master' of /usr/src/ntfs-2.6/ 2005-10-24 09:19:36 +01:00
Anton Altaparmakov
c9c2009a4e NTFS: Document extended attribute ($EA) NEED_EA flag. (Based on libntfs
patch by Yura Pakhuchiy.)

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-10-24 09:00:51 +01:00