Originally from Nikita Danliov. 

- Add struct subsystem to struct file_system_type. 
- Add fs_subsys_init() to explicitly call sysfs_init() very early.
- Register base fs subsystem then, too.
- Register filesystems' embedded subsystem when registered with fs core.

Resulting tree looks like:

# tree /sys/fs/
/sys/fs/
|-- bdev
|-- devpts
|-- eventpollfs
|-- ext2
|-- ext3
|-- futexfs
|-- iso9660
|-- pipefs
|-- proc
|-- ramfs
|-- rootfs
|-- sockfs
|-- sysfs
`-- tmpfs

- For matching registered platform devices with platform drivers.

- Also, make sure platform_bus is initialized early, with the rest of the 
  core stuff.

This ensures that sysfs is initialized very early, before anything can 
possibily registered with it. 

It happens early enough that all filesystems can registered with sysfs 
(besides sysfs itself), which is coming next.

- Call driver_init() from init/main.c::do_basic_setup(). 

This ensures that all the driver model subsystems are initialized before
any drivers or devices can be registered. 

It nearly frees up the core and postcore initcall levels, making them 
available for other kernel code to use freely. 

From Andrew Morton

- Create and register kobjects when adding a cpu to the cpufreq interface,
  instead of the terminally broken struct intf_data.

ACKed by Dominik Brodowski.

into osdl.org:/home/mochel/src/kernel/devel/linux-2.5-core

- Remove struct intf_data. 
  It was silly, and gave us an unbalanced interface. 
  Instead, when removing a device_interface, all of a class's devices are
  iterated over, and intf->remove_device() is called for each. (Instead 
  of the device's list of interfaces it belongs to). 
  Interfaces are expected to tell if they support the device being removed.

- Remove struct device::intf_list.

- Protect classes' device list access with devclass_sem, which is taken 
  when a device or interface is added or removed. This allows access to the
  list w/o taking the class's lock, which allows subordinate objects to be
  registered (e.g. the interface itself, or objects the interfaces create
  for a device). 

- This should fix a deadlock when devices are added to interfaces, which 
  calls intf->add_device(), then interface_add_data(), which call 
  kobject_register() and hangs, since it tries to take the class's lock
  again. 

Check whether kset is NULL or not before doing container_of().

From Dominik Brodowski

From Matt Wilcox

If a file that doesn't exist was looked up in a directory, and that
directory is later removed, sysfs would reap the negative dentrys along 
with the valid ones.

Fix is to manually remove the dentrys from the parent's list under the 
dcache_lock, then check if they're valid with dget_locked(). 

This ensures all the dentrys are removed, valid and invalid, and we don't 
reap anything we shouldn't.

This patch contains the first fruits of the automatic spell checking and
correcting scripts written by Dan Kegel and Matthias Schniedermeyer.
Those scripts are available here: http://www.kegel.com/kerspell/

This patch fixes these six words from the first five lines of
spell-fix.txt.  280 lines remaining.

  accesible   -> accessible
  accesing    -> accessing
  accomodate  -> accommodate
  acommodate  -> accommodate
  Acknowlege  -> Acknowledge
  acknoledged -> acknowledged

into home.transmeta.com:/home/torvalds/v2.5/linux