s390 console fixes for 3215 and sclp.

Common i/o layer fixes:
 - Fix for path no operational condition in cio_start.
 - Fix handling of user interruption parameter.
 - Add code to wait for devices in init_ccw_bus_type.
 - Move qdio states out of main cio state machine.
 - Reworked chsc data structures.
 - Add ccw_device_start_timeout.
 - Handle path verification required flag.

Add support for system calls with numbers > 255.

s390 fixes:
 - Initialize timing related variables first and then enable the timer interrupt.
 - Normalize nano seconds to micro seconds in do_gettimeofday.
 - Add types for __kernel_timer_t and __kernel_clockid_t.
 - Fix ugly bug in switch_to: set prev to the return value of resume, otherwise
   prev still contains the previous process at the time resume was called and
   not the previous process at the time resume returned. They differ...
 - Add missing include to get the kernel compiled.
 - Get a closer match with the i386 termios.h file.
 - Cope with INITIAL_JIFFIES.
 - Define cpu_relax to do a cpu yield on VM and LPAR.
 - Don't reenable interrupts in program check handler.
 - Add pte_file definitions.
 - Fix PT_IEEE_IP special case in ptrace.
 - Use compare and swap to release the lock in _raw_spin_unlock.
 - Introduce invoke_softirq to switch to async. interrupt stack.

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

unmap_vmas() eventually calls tlb_start_vma(), where most architectures
flush caches as necessary.  The flush here seems to make the
flush_cache_range() in zap_page_range() redundant, and therefore can be
removed.

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

This contains the following changes:
 - export some driver parameters in sysfs
 - use new module parameter definitions

This contains the following changes:
 - EOT detection fixed when writing in fixed block mode
 - asynchronous writes in fixed block mode and write threshold removed
   to enable the EOT fixes (the parameter accepted for compatibility)

This contains the following changes:
 - ILI fixed to work with really old drives
 - message printed in case block larger than read()
 - long timeout used when creating a tape partition

I managed to add a bug to the local APIC NMI watchdog's
resume procedure in the driver model conversion for 2.5.67.
The problem is that the resume procedure simply calls the
enable procedure. If the NMI watchdog has been disabled by
another driver (like oprofile or perfctr), then the NMI
watchdog will incorrectly be re-enabled.

I discovered this when updating the perfctr driver for 2.5.67
and seeing unexpected NMIs after a resume from apm --suspend.

We can fix this by unregistering the NMI watchdog from the
driver model when disabling it (like the code did before the
driver model changes), or by remembering the previous state
at suspend and checking it at resume. The patch below uses
the second, simpler, approach. Tested, please apply.

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

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

Following recent changes removing blk_queue_empty(), we were
incorrectly plugging the queue some times (most often as part of
the SCSI scan process).  This was causing a non-deterministic panic
in the scan code because a destroyed queue was sometimes being
unplugged and run.

Patch from cam mayor

when setting up the framebuffer on the clps711x platform, the code checks to see if your allocated memory area is less than 38400 bytes.  If it is, a comment is sent to the kernel output suggesting it could be placed into SRAM.  This patch modifies the check so that it is suggested if the allocated memory area is less than OR EQUAL TO 38400 bytes.  This value is important as 38400 bytes is exactly the size of a 320 x 240 x 4bpp screen.  

into kernel.bkbits.net:/home/davem/net-2.5

Patch from Ian Molton

missed a bit. apply ontop of earlier patch.

Patch from Ian Molton

See summary

Patch from Ian Molton

see summary

Patch from Dirk Behme

Please see mail thread '[patch] Cleanup of head.S?' from 25 Feb 2003. Let us remove the third part now. The mapping set by this code is done already.

The comment of rmk was

'I suspect we can kill (3) without hurting stuff that's merged into the
-rmk tree, although I'm sure there's a reason it existed.  I'll have
to check my mail archives, but I think there was a machine that required,
but it appears not to be merged.'

So, let's try and see if somebody cries...

into nuts.ninka.net:/home/davem/src/BK/sparc-2.5

into raven.il.steeleye.com:/home/jejb/BK/scsi-for-linus-2.5

compile fix for PA-RISC

This fixes a build error caused by other changes in 2.5.67.

into kozmo.(none):/usr/src/fbdev-2.5

From: Angus Sawyer <angus.sawyer@dsl.pipex.com>

When the last device in a raid1 array is failed (or missing) the r1bio
structure can be released (especially on very fast devices) before
make_request has finished using it.

This patch gets and puts an extra reference to the r1_bio around the
submission loop, and uses the status in r1_bio to maintain the request status
if the last refernce is held by make_request.

This is also more correct for write requests, as a write should succeed
if any write succeeded, not only if the last write succceeded.

A new file "nfs4state.c", and nfs4_setclientid{,_confirm} are moved there,
with lots of code.

The removal of "struct nfsctl_uidmap" from "nfsctl_fdparm" broke
binary compatiblity on 64-bit platforms (strictly speaking: on all
platforms with alignof(void *) > alignof(int)).  The problem is that
nfsctl_uidmap contained a "char *", which forced the alignment of the
entire union to be 64 bits.  With the removal of the uidmap, the
required alignment drops to 32 bits.  Since the first member is only
32 bits in size, this breaks compatibility with user-space.  Patch
below fixes the problem.

Currently, an NFSv3 ACCESS check for READ permission on an
eXecute-only file will succeed where it should fail.

This is because nfsd_permission allows READ access to eXecute only
files so that mode 711 executables can be loaded and run, and
nfsd_access simply uses nfsd_permission.

This patch changes nfsd_permission to only map eXecute permission to
read permission of MAY_OWNER_OVERRIDE was set.  This is only set
when trying to read from a file, so ACCESS will no longer be tricked.

This change will only affect callers of nfsd_permission that specify
MAY_READ and not MAY_OWNER_OVERRIDE, and nfsd_access is the only
routine that calls nfsd_permission (via fh_verify) that way.

There was a missing exp_put in export.c so that after a client
mounts an exported filesystem, the server would never be able to
unmount, even after trying to unexport.  This is fixed by the last
chunk of this patch.

Also assorted cleanups to the code found while hunting.

From: Rusty Russell <rusty@rustcorp.com.au>

Introduce _sinittext and _einittext (cf. _stext and _etext), so kallsyms
includes __init functions.

TODO: Use huffman name compression and 16-bit offsets (see IDE
oopser patch)

From Alex Tomas and myself

It is identical in concept to the block allocator change.  It uses the same
hashed spinlock.

From Alex Tomas and myself

ext2 currently uses lock_super() to protect the filesystem's in-core block
allocation bitmaps.

On big SMP machines the contention on that semaphore is causing high context
switch rates, large amounts of idle time and reduced throughput.

The context switch rate can also worsen block allocation: if several tasks
are trying to allocate blocks inside the same blockgroup for different files,
madly rotating between those tasks will cause the files' blocks to be
intermingled.

On SDET and dbench-style worloads (lots of tasks doing lots of allocation)
this patch (and a similar one for the inode allocator) improve throughout on
an 8-way by ~15%.  On 16-way NUMAQ the speedup is 150%.

What wedo isto remove the lock altogether and just rely on the atomic
semantics of test_and_set_bit(): if the allocator sees a block was free it
runs test_and_set_bit().  If that fails, then we raced and the allocator will
go and look for another block.

Of course, we don't really use test_and_set_bit() because that
isn'tendian-dependent.  New atomic endian-independent functions are
introduced: ext2_set_bit_atomic() and ext2_clear_bit_atomic().  We do not
need ext2_test_bit_atomic(), since even if ext2_test_bit() returns the wrong
result, that error will be detected and naturally handled in the subsequent
ext2_set_bit_atomic().

For little-endian machines the new atomic ops map directly onto the
test_and_set_bit(), etc.

For big-endian machines we provide the architecture's impementation with the
address of a spinlock whcih can be taken around the nonatomic ext2_set_bit().
 The spinlocks are hashed, and the hash is scaled according to the machine
size.  Architectures are free to implement optimised versions of
ext2_set_bit_atomic() and ext2_clear_bit_atomic().

ext2 and ext3 per-blockgroup metadata needs locking.  An fs-wide lock is
expensive, and a per-blockgroup lock consumes too much storage (up to 32768
blockgroups per filesystem).  We need something in-between.

blockgroup_locks are very simple hashed spinlocks which provide this
compromise.  The size of the lock is scaled by NR_CPUS to implement an
additional speed/space tradeoff.

These locks are actually fairly generic.  However I presented it as something
which is specific to ext2 and ext3 so that people wouldn't go using them all
over the place.  They consume a lot of storage.

Several places in ext2 and ext3 are using filesystem-wide counters which use
global locking.  Mainly for the orlov allocator's heuristics.

To solve the contention which this causes we can trade off accuracy against
speed.

This patch introduces a "percpu_counter" library type in which the counts are
per-cpu and are periodically spilled into a global counter.  Readers only
read the global counter.

These objects are *large*.  On a 32 CPU P4, they are 4 kbytes.  On a 4 way
p3, 128 bytes.