but it does...

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	* we remove the paritition 0 from ->part[] and put the old
contents of ->part[0] into gendisk itself; indexes are shifted, obviously.
	* ->part is allocated at add_gendisk() time and freed at del_gendisk()
according to value of ->minor_shift; static arrays of hd_struct are gone
from drivers, ditto for manual allocations a-la ide.  As the matter of fact,
none of the drivers know about struct hd_struct now.

	new helpers - get_capacity(gendisk)/set_capacity(gendisk, sectors).
Drivers switched to these; that eliminates most of the accesses to
disk->part[]... in the drivers (and makes code more readable, while
we are at it).  That had caught several bugs when minor had been
used in place of minor>>minor_shift (acsi.c is especially nasty in
that respect; I don't know if it had ever been used with multiple
devices...)

	 ide switched from hwif->gd[i] to hwif->drive[i]->disk - IOW, instead
of array of two pointers to gendisks refered from hwif, we keep these pointers
in relevant drives.  Cleaned up.

	SCSI cdroms got gendisks.

	invalidate_buffers() pulled from cdrom ->reset() into its caller.
At that point only cdrom.c using cdi->dev.  That will play a bit later.

	minor cleanup in cdu31a.c

	mcdx.c cleaned up, uses of cdi->dev eliminated

	 pcd.c cleaned up, uses of cdi->dev eliminated, abuse of macros killed
(it used to have
#define PCD pcd[unit]
#define PI PCD.pi
and expected 'unit' to be local variable in each function that used these
(== almost every function in there)).

	Lindent pcd.c.

	 pcd.c - killed RR and WR macros (replaced with inlines without hidden
arguments; the first step in cleanup, they were monstrous).

	sbpcd.c - d eliminated, ditto for uses of cdi->dev (we set cdi->handle
pointing to structure we neeed).  Cleaned up a bit.

	 sbpcd.[c,h] - uses of D_S[d] replaced with uses of *current_drive.

	sbpcd.c - sigh... It used to have a global variable inventively called
'd'.  Current disk number.  Tons of uses, 99% of them being D_S[d].<blah>.
Added a new variable - current_drive.  Said animal is equal to D_S + d -
it's reassigned at the same place as d.

	 killed passing minors around; we always pass a pointer to structure;
scsi_CDs made static.  That killed uses of cdi->dev in sr.c and friends.

	Global search'n'replace job - 'SCp' (Scsi_CD pointer - I'm not kidding;
and yes, they spell it "Scsi") replaced with 'cd' (sr.c, sr_ioctl.c,
sr_vendor.c).

	sr.c: we set SCp->cdi.name from the very beginning, which allows
to kill passing minors in many cases (we can use "%s...", SCp->cd.name instead
of "sr%d...", minor and that turns out to be the majority of places where
we use minors at all).

	new helper - update_partition(disk, partition_number); does the
right thing wrt devfs and driverfs (un)registration of partition entries.
BLKPG ioctls fixed - now they call that beast rather than calling only
devfs side.  New helper - rescan_partitions(disk, bdev); does all work
with wiping/rereading/etc. and fs/block_dev.c now uses it instead of
check_partition().  The latter became static.

	similar to ->flags and ->driverfs_dev_arr, ->de_arr[] got replaced
with its (single) element + flag.

	Each hd_struct used to have int number; in it.  It's used _only_
in disk->part[0] - disk->part[n].number is never assigned/checked for any
positive n.  Moved from hd_struct to gendisk (disk->part[0].number to
disk->number).

	disk->driverfs_dev_arr is either NULL or consists of exactly one
element.  Same change as above (struct device ** -> struct device *); old
"is the pointer to array itself NULL or not?" replaced with a flag (in
disk->flags).

	Seeing that now disk->flags[] always consists of one element, we
replace char *flags with int flags, remove the junk from places that used
to allocate these "arrays" and do obvious updates of the code
(s/->flags[0]/->flags/).

	call of driverfs_remove_partitions() pulled into del_gendisk();
function isn't exported anymore.  Both it and driverfs_create_partitions()
cleaned up.

	driverfs_remove_partitions(), devfs_register_partitions(),
driverfs_create_partitions(), devfs_register_partition(), devfs_register_disc(),
had lost 'minor' argument - it's always disk->first_minor these days.
disk_name() takes partition number instead of minor now.  Callers of
wipe_partitions() in fs/block_dev.c expanded.  Remaining caller passes
gendisk instead of kdev_t now.

	Since ->nr_real is always 1 now, we can remove that field completely.
Removed the last remnants of switch in disk_name() (it could be killed
a long time ago, I just forgot to remove the last two cases when md and i2o
got converted).  Collapsed several instances of
disk->part[minor - disk->first_minor] - in cases when we know that we deal
with disk->part[0].

	wipe_partitions() and driverfs_register_partitions(..., 1) (i.e.
unregistering them) pulled into del_gendisk() and removed from callers.
grok_partitions() merged with register_disk().  devfs_register_partitions(),
grok_partitions() and wipe_partitions() not exported anymore.

Patch set from Jay Estabrook:

 - include/asm-alpha/dma.h:
	Add MAX_DMA_ADDR for SABLE and ALCOR

 - include/asm-alpha/floppy.h:
	enable the full CROSS_64KB macro for all platforms

 - include/asm-alpha/core_t2.h:
	fix HAE usage

 - arch/alpha/kernel/pci.c:
	fiddle with quirk_cypress

 - arch/alpha/kernel/traps.c:
	prevent opDEC_check() from multiple calls (EV4 SMP SABLEs)

 - arch/alpha/kernel/proto.h:
	make t2_pci_tbi() real

 - arch/alpha/kernel/time.c:
	shorten timeout delay

 - arch/alpha/kernel/sys_alcor.c:
	use ALCOR_MAX_DMA_ADDR because of the 1GB limit on ISA devices

 - arch/alpha/kernel/core_t2.c:
	add S/G support and allow direct-map to handle 2GB of memory

 - arch/alpha/kernel/core_tsunami.c:
	rework alignment requirements for ISA DMA, esp. for ACER platforms

 - arch/alpha/kernel/sys_sable.c:
	fix MAX_DMA_ADDR for the 1GB limitation

 - arch/alpha/kernel/pci_impl.h:
	add T2_DEFAULT_MEM_BASE to help avoid HAE use

 - arch/alpha/kernel/pci_iommu.c:
	fix ISA_DMA_MASK calculation, and force ISA alignment to 64KB

 - add another argument to do_fork();
 - assorted compile fixes.

Tested on CIA (sparse config space) and Irongate (dense config space);
other platforms should work as they are similar to these two.

Access config space directly on rx164.

Here are the changes I have

  - Fix some bugs I introduced in zap_thread
  - Improve the check for traced children in sys_wait4
  - Fix parent links when using CLONE_PTRACE

My thanks to OGAWA Hirofumi for pointing out the first bit.

The only other issue I know of is something else Hirofumi pointed out
earlier; there are problems when a tracing process dies unexpectedly.  I'll
come back to that later.

I've done the attached patch to collect & clean up all the things that
happened since yesterday.

It is nice that blkdev_ioctl calls blk_ioctl itself, but unfortunately
it does that only if driver's ioctl returns -EINVAL - and IDE returns
-EIO :-(

Patch below is tested for disks - I do not have IDE floppy nor IDE tape.

of something arch-dependent and usually less. 

We may want to do value limiting in generic_fillattr() if people
end up caring.

This is the pid-max patch, the one i sent for 2.5.31 was botched.  I
have removed the 'once' debugging stupidity - now PIDs start at 0 again.
Also, for an unknown reason the previous patch missed the hunk that had
the declaration of 'DEFAULT_PID_MAX' which made it not compile ...

This contains Daniel's suggested fix that allows a parent to
PTRACE_ATTACH to a child it forked.  That fixes the incorrect BUG_ON()
assert that Ogawa's patch was intended to fix, and we thus undo Ogawa's
patch.

I've tested various ptrace uses and they appear to work just fine.

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We want do so on all architectures for consistency, and i386 will need
the preprocessing soon anyway.