Trying to read the overlong target of a /proc/*/fd/N file descriptor
leads to a SIGSEGV inside the kernel, because the code doesn't check
for an error pointer return from d_path.

This adds support for i830 interrupt handling, and new improved
lock context keying. See per-file comments for more detail, as this
commit sadly mixes up a few different things (that's what you get
for not tracking the changes at a fine enough granularity).

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

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

Contributed by Andi Kleen

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

	o [CORRECT] Fix module refcounting (MOD_INC/DEC => .owner)
	o [FEATURE] Add hints to discovery (control channel)

	o [FEATURE] Make IrDA timers use mod_timer instead of
	add+del_timer

	o [FEATURE] Enable ZeroCopy Rx in irtty-sir/sir-dev
		(provided by the new SIR wrapper in 2.5.61).

	o [CORRECT] Don't do usb_clear_halt() on USB control pipe
	o [FEATURE] Cleanup and simplify the USB Rx path

	o [FEATURE] Fix the dynamic window code to properly send the pf bit.
		Increase perf by 40% for large packets at SIR.

	o [CRITICA] Fix remaining locking problem with discovery log
	o [CRITICA] Don't call expiry callback under spinlock
	o [FEATURE] Simplify/cleanup/optimise discovery/expiry code

Get this compile warning:
drivers/net/3c509.c:207: warning: `el3_device_remove' declared `static' but never defined
because the function definition is under
"#if defined(CONFIG_EISA) || defined(CONFIG_MCA)".

This patch puts the declaration under the same conditions.
I'd be shocked if it wasn't correct ;-)

M.

This patch updates the MACE ethernet driver, used on older powermacs,
to remove the uses of save_flags/restore_flags/cli/sti and use a
spinlock instead.

Jeff, please send this on to Linus.

Paul.

- No need to alloc dev->priv (due to init_etherdev usage)
- No need to kfree dev->priv (kfree'd with (dev) already)

In drivers/net/r8169.c the function rtl8169_remove_one is __devexit but
the pointer to it didn't use __devexit_p resulting in a.text.exit
compile error when !CONFIG_HOTPLUG.

The fix is simple:

Mainly sync w/ 2.4.x version.

Remove unused local `fattr' in nfs_readpage_result().

From: davej@codemonkey.org.uk

We currently run sync_blockdev() on every close of a blockdev.  This patch
arranges for the sync to happen only on the final close.

From: Brian Gerst <bgerst@didntduck.org>

- Reduce code duplication by putting the kmalloc cache sizes into a header
  file.

- Tidy up kmem_cache_sizes_init().

- If two CPUs run register_chrdev_region(major == 0) at the same time they
  can get the same major.

  Fix that by extending the lock coverage.

- local variable `cd' was leaky on an error path.

- Add some API commentary.

We just made bdevname() irq-safe.  This patch makes cdevname() callable from
interrupts as well.

From: Andi Kleen <ak@muc.de>

Fix a warning on x86_64 (and presumably ia64) which arises from casting an
int to a pointer.

From: Gerd Knorr <kraxel@bytesex.org>

2.5.x kernels don't look at the VM_DONTEXPAND flag when merging multiple vmas
into one.

From: William Lee Irwin III <wli@holomorphy.com>

inode_init() wants to deal with things in in units of the size of
struct hlist_head, not struct list_head.

From: William Lee Irwin III <wli@holomorphy.com>

__blk_queue_bounce() contains an open-coded page_to_pfn() for the
discontig, non-MAP_NR_DENSE() case (wherever MAP_NR_DENSE() went).
This converts it to use the standard page_to_pfn() abstraction.

Spotted by Oleg Drokin: remove a couple of local variables which aren't being
used for anything.

kmap() can sleep, but rarely does.  Add a check for kmap() being called from
inappropriate contexts.

There is never a need to write out b_assoc_buffers() in ext3_sync_file().

From: Andries.Brouwer@cwi.nl

Adding the unregister_chrdev_region call that is the counterpart to
register_chrdev_region, we get a nice cleanup of tty_io.c.

From: Patricia Gaughen <gone@us.ibm.com>

The boot-time ioermap code needs to invalidate the tlb entries after setting
up the new pte.

From: john stultz <johnstul@us.ibm.com>

This patch allows one to manually specify the i386 gettimeofday time-source
by passing clock=[pit|tsc|cyclone|...] as a boot argument.  The argument will
override the default probled selection, and in case the selected time-source
not be avalible the code defaults to using the PIT (printing a warning saying
so).

It is generally illegal to wait on an unpinned buffer - another CPU could
free it up even before __wait_on_buffer() has taken a ref against the buffer.

Maybe external locking rules will prevent this in specific cases, but that is
really subtle and fragile as locking rules are evolved.

The patch detects people calling wait_on_buffer() against an unpinned buffer
and issues a diagnostic.

Also remove the get_bh() from __wait_on_buffer().  It is too late.

ext3 is only permitting files of up to 32G.  It should be allowing files to
be up to 2TB.

This is because it is running ext3_max_size(1024) before the filesystem's
blocksize has been determined.

From: Hugh Dickins <hugh@veritas.com>

Stop vm_enough_memory double counting total_swapcache_pages: it dates
from the days when we didn't free swap when freeing swapcache page.

From: Hugh Dickins <hugh@veritas.com>

move_from_swap_cache and add_to_page_cache_lru are using GFP_ATOMIC,
which can easily fail in an intermittent way.  Rude if shmem_getpage
then fails with -ENOMEM: use blk_congestion_wait() to let kswapd in,
and repeat.

From: Hugh Dickins <hugh@veritas.com>

Recent testing has shown that swapoff can sneak a page back into the
tmpfs page cache after truncate_inode_pages has cleaned it, before
shmem_truncate resets next_index to stop that: BUG_ON(inode->i_blocks)
in shmem_delete_inode.  So call truncate_inode_pages again to be safe.

From: Hugh Dickins <hugh@veritas.com>

Make add_to_swap_cache static, it's only used by read_swap_cache_async;
and since that has just done a GFP_HIGHUSER allocation, surely it's
better for add_to_swap_cache to use GFP_KERNEL than GFP_ATOMIC.