split the initrd stuff out of blk.h, it's only needed in the boot code
and the ramdisk driver.

The following patches switch the few drivers that have to register
devfs entries independand of gendisks to devfs_mk_bdev.

This and the next patches switches over drivers to gendisk.devfs_name.

Previously gendisk.devfs_name was used only for partitioned devices
or CDroms, and for the latter it was slightly broken.  Fix it to
work genericly for all gendisks.

Replaces devfs_register for block devices.  Note that we do NOT pass in
an operaion vector here - it was unused in devfs_register already
and our block device code fundamentally ties the operations to the
gendisk.  There will be only very few callers of this one anyway..

Already handled by the gendisk layer.

Dasd is partitioned - all devfs stuff is handled by the gendisk layer.

Duh, ubd is partitioned.

Make sure input always uses devfs_remove.  While at it I've also
remove lots of code duplication - every upper input driver contained
the code surrounding devfs_unregister in two identical copies.

- Cleaned up hostinfo usage in all drivers and created a central API to
  handle them all.
- Fixup some spinlock mis-usage.
- Remove devfs_handle mis-usage.
- Cleaned up some heavy handed spinlocking to use mutexes instead.
- Add function to send PHY config packets and use to to settle
  IRM/cycle-master/root descrepancies.

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

If copy_namespace() returns -EPERM, copy_process() will
return a confusing -ENOMEM. Fix it thus.

	new_ns = kmalloc(sizeof(struct namespace *), GFP_KERNEL);
thing wasn't a very good idea.

The rest are whitespace cleanups.

(i) Replace in struct loop_info the dev_t field by __kernel_old_dev_t,
where this type is defined in <asm/posix_types.h>, so that problems
with a differently sized dev_t in userspace are avoided.

(ii) Introduce a new loop_info64, with __u64 device, inode and offset
fields.