From Ed Tomlinson, then mauled by yours truly.

The current shrinking of the dentry, inode and dquot caches seems to
work OK, but it is slightly CPU-inefficient: we call the shrinking
functions many times, for tiny numbers of objects.

So here, we just batch that up - shrinking happens at the same rate but
we perform it in larger units of work.

To do this, we need a way of knowing how many objects are currently in
use by individual caches.  slab does not actually track this
information, but the existing shrinkable caches do have this on hand.
So rather than adding the counters to slab, we require that the
shrinker callback functions keep their own count - we query that via
the callback.

We add a simple registration API which is exported to modules.  A
subsystem may register its own callback function via set_shrinker().

set_shrinker() simply takes a function pointer.  The function is called
with

	int (*shrinker)(int nr_to_shrink, unsigned int gfp_mask);

The shrinker callback must scan `nr_to_scan' objects and free all
freeable scanned objects.  Note: it doesn't have to *free* `nr_to_scan'
objects.  It need only scan that many.  Which is a fairly pedantic
detail, really.

The shrinker callback must return the number of objects which are in
its cache at the end of the scanning attempt.  It will be called with
nr_to_scan == 0 when we're just querying the cache size.

The set_shrinker() registration API is passed a hint as to how many
disk seeks a single cache object is worth.  Everything uses "2" at
present.

I saw no need to add the traditional `here is my void *data' to the
registration/callback.  Because there is a one-to-one relationship
between caches and their shrinkers.


Various cleanups became possible:

- shrink_icache_memory() is no longer exported to modules.

- shrink_icache_memory() is now static to fs/inode.c

- prune_icache() is now static to fs/inode.c, and made inline (single caller)

- shrink_dcache_memory() is made static to fs/dcache.c

- prune_dcache() is no longer exported to modules

- prune_dcache() is made static to fs/dcache.c

- shrink_dqcache_memory() is made static to fs/dquot.c

- All the quota init code has been moved from fs/dcache.c into fs/dquot.c

- All modifications to inodes_stat.nr_inodes are now inside
  inode_lock - the dispose_list one was racy.

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

Keep the partition information around for the lifetime of the module.

This updates AFS mtd partition parsing to the current CVS version:
- Don't recognise the AFS SIB as a partition
- Ensure initialisation of afs mtdpart structures.

We removed asm/mach-types.h from asm/hardware.h.  This means we must
now include asm/mach-types.h where its used.

We also fix h3600 pcmcia initialisation/cleanup.

Traditionally, the Assabet reverses its mapping of UART1 and UART3
when the Neponset board is connected.  This can be (a) confusing
and (b) annoying when the boot loader uses UART1.  We therefore
have a fixed mapping between the ttySA names and the physical
UARTs on this platform.

The patches convert drivers/pcmcia to use C99 named initializers,
and all the patches are against 2.5.42. There are 25 patches in
total, and the "cat"ing them together they're more that 20K, so
I'm sending the patches as a compressed attachment. The patches
were CC'd to Linus in the first mail that bounced.

Here's a small set of patches that switch the code to use C99
desiginated initializers. Patches are against 2.5.42.

Prevent the assembler putting constant pools in the middle of code.
Clean up shark ISA PIC handling.

This cset removes the global irq handling in the AcornSCSI driver,
and makes the target type for bitops an unsigned long array rather
than an unsigned char array.

Remove unnecessary use of __inline__, and remove a few unnecessary
prototypes.  copy_buffer is moved before use.

This removes a compilation warning and makes the code smaller.
It is also more obvious what's going on.

The USB gadget code now lives in arch/arm/mach-sa1100/usb, and
isn't in a mergable state.  We remove the old makefile entries
which are never going to be satisfied, and leave a placeholder for
the usb directory.

dump_stack() got used by the generic code.  Call our version
__dump_stack since we're running out of other descriptive names.
Allow show_trace_task to show the backtrace for the current
thread.

Add rudimentary support for Thumb ptracing; we aren't able to single
step through thumb branches yet, but this change provides enough
infrastructure to make this possible.

This cset updates (as much as is possible) the NCR5380-based Acorn
SCSI drivers, mainly converting them to the new error handling code.
However, they still don't build due to errors in NCR5380.

Vojtech has patches that bring their counterparts in the input
subsystem up to date (and into a working state) so these drivers
are no longer required.

This cset also fixes the Acorn i2c RTC code.

This cset combines the Atomwide and The Serial Port 16550 driver
modules into one "8250_acorn.c" driver.  This new module takes full
advantage of the LDM-based expansion card facilities.

This cset implements validity checks on the ethernet MAC address when
the device is opened, and refuses to open the device if this check
fails.  We also provide the set_mac_address method to allow ifconfig
to change the mac address to something valid.

In addition, the driver is converted from the old expansion card
discovery methods to the new device model driver framework.

Provide LDM-based driver registration/removal interface for drivers
to use.  We make the old device discovery code ignore devices
claimed via the LDM framework.  However, the LDM framework ignores
devices that may be in use by the old device discovery code.  This
is fine since the only devices that will still use the old discovery
code will be SCSI drivers.

Currently, we don't provide a useful dev.name entry.

This updates the Integrator cpufreq code to use the new interfaces,
and makes the sa1100 cpufreq round up the requested frequency.

The second serial port is never present in these machines, so its
pointless listing it in the first place.

- ide_register_hw takes two arguments, not one.
- ide_fix_driveid is no longer used.

This adds ARM support for in_atomic() and asm/numnodes.h

This updates these neponset and sa1111 support to use the new system
device infrastructure in the Linux device model.

Sanitise includes of asm/tlbflush.h, asm/cacheflush.h, asm/proc-fns.h
Implement ARM-specific TLB "shootdown" code.  It turns out that it
is overall more efficient to unconditionally invalidate the whole
TLB rather than entry by entry when removing areas.

This cset fixes the RiscPC decompressor code for the PIC changes.

We use a pointer to a structure rather than a structure to access
params.  With a PIC decompressor, the address of the structure gets
PIC-ified which is not what we want.

Update pcibios_enable_device to only enable requested resources,
mainly for IDE.  Supply a pci_mmap_page_range() function to allow
user space to mmap PCI regions.

This updates the ARM time keeping functions to use tick_nsec/1000
instead of tick.

To keep the Config.in files relatively clean, we use the
following construct:

 if [ "$CONFIG_ARM" = "y" ]; then
    dep_tristate 'Foo' CONFIG_FOO $CONFIG_BAR
 fi

where CONFIG_BAR is some machine implementation or high-level
chip support configuration option.  If CONFIG_BAR is left
empty, then the tristate is offered to the user, which isn't
what we want.  Defining CONFIG_BAR to 'n' prevents the option
being offered.

This is a rule I generally try to implement within
arch/arm/config.in.

This cset makes CONFIG_SA1111 and CONFIG_ARM_THUMB behave that
way.

Since the decompressor supports PIC, even for CONFIG_ZBOOT_ROM,
we can easily allow an image which has been linked to run at
a particular address in ROM to be moved to RAM.  We just need
to make sure that we don't relocate the GOT entries for the
BSS segment.

This cset also implements sa1100-based debugging for the
decompressor.

These two variables are used by more than just the linker;
they're also used by head.S to know where it can safely
place the page tables.  We therefore need to export it
from the Makefile.

These are also highly machine dependent; we don't want
to duplicate the same set of conditionals for cpp and
for the makefiles.

arch/arm/Makefile also contained a stray close-paren.  I'm
submitting this one to the lost property office.

We also always pass -mno-fpu to the assember; this
guarantees that any floating point will be caught.