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Update 2.6.x-xfs to 2.6.23-rc4.

Also update fs/xfs with external mainline changes.
There were 12 such missing commits that I detected:

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commit ad690ef9e690f6c31f7d310b09ef1314bcec9033
Author: Al Viro <viro@ftp.linux.org.uk>
    xfs ioctl __user annotations

commit 20c2df83d25c6a95affe6157a4c9cac4cf5ffaac
Author: Paul Mundt <lethal@linux-sh.org>
    mm: Remove slab destructors from kmem_cache_create().

commit d0217ac04ca6591841e5665f518e38064f4e65bd
Author: Nick Piggin <npiggin@suse.de>
    mm: fault feedback #1

commit 54cb8821de07f2ffcd28c380ce9b93d5784b40d7
Author: Nick Piggin <npiggin@suse.de>
    mm: merge populate and nopage into fault (fixes nonlinear)

commit d00806b183152af6d24f46f0c33f14162ca1262a
Author: Nick Piggin <npiggin@suse.de>
    mm: fix fault vs invalidate race for linear mappings

commit a569425512253992cc64ebf8b6d00a62f986db3e
Author: Christoph Hellwig <hch@infradead.org>
    knfsd: exportfs: add exportfs.h header

commit 831441862956fffa17b9801db37e6ea1650b0f69
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Freezer: make kernel threads nonfreezable by default

commit 8e1f936b73150f5095448a0fee6d4f30a1f9001d
Author: Rusty Russell <rusty@rustcorp.com.au>
    mm: clean up and kernelify shrinker registration

commit 5ffc4ef45b3b0a57872f631b4e4ceb8ace0d7496
Author: Jens Axboe <jens.axboe@oracle.com>
    sendfile: remove .sendfile from filesystems that use generic_file_sendfile()

commit 8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Add suspend-related notifications for CPU hotplug

commit 59c51591a0ac7568824f541f57de967e88adaa07
Author: Michael Opdenacker <michael@free-electrons.com>
    Fix occurrences of "the the "

commit 0ceb331433e8aad9c5f441a965d7c681f8b9046f
Author: Dmitriy Monakhov <dmonakhov@openvz.org>
    mm: move common segment checks to separate helper function
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Merge of 2.6.x-xfs-melb:linux:29656b by kenmcd.

How to get the bt8xx cards working
==================================

1) General information
======================

This class of cards has a bt878a as the PCI interface, and require the bttv driver
for accessing the i2c bus and the gpio pins of the bt8xx chipset.
Please see Documentation/dvb/cards.txt => o Cards based on the Conexant Bt8xx PCI bridge:

Compiling kernel please enable:
a.)"Device drivers" => "Multimedia devices" => "Video For Linux" => "Enable Video for Linux API 1 (DEPRECATED)"
b.)"Device drivers" => "Multimedia devices" => "Video For Linux" => "Video Capture Adapters" => "BT848 Video For Linux"
c.)"Device drivers" => "Multimedia devices" => "Digital Video Broadcasting Devices" => "DVB for Linux" "DVB Core Support" "Bt8xx based PCI Cards"

Please use the following options with care as deselection of drivers which are in fact necessary
may result in DVB devices that cannot be tuned due to lack of driver support:
You can save RAM by deselecting every frontend module that your DVB card does not need.

First please remove the static dependency of DVB card drivers on all frontend modules for all possible card variants by enabling:
d.) "Device drivers" => "Multimedia devices" => "Digital Video Broadcasting Devices"
 => "DVB for Linux" "DVB Core Support" "Load and attach frontend modules as needed"

If you know the frontend driver that your card needs please enable:
e.)"Device drivers" => "Multimedia devices" => "Digital Video Broadcasting Devices"
 => "DVB for Linux" "DVB Core Support" "Customise DVB Frontends" => "Customise the frontend modules to build"
 Then please select your card-specific frontend module.

2) Loading Modules
==================

Regular case: If the bttv driver detects a bt8xx-based DVB card, all frontend and backend modules will be loaded automatically.
Exceptions are:
- Old TwinHan DST cards or clones with or without CA slot and not containing an Eeprom.
People running udev please see Documentation/dvb/udev.txt.

In the following cases overriding the PCI type detection for dvb-bt8xx might be necessary:

2a) Running TwinHan and Clones
------------------------------

	$ modprobe bttv card=113
	$ modprobe dst

Useful parameters for verbosity level and debugging the dst module:

verbose=0:		messages are disabled
	1:		only error messages are displayed
	2:		notifications are displayed
	3:		other useful messages are displayed
	4:		debug setting
dst_addons=0:		card is a free to air (FTA) card only
	   0x20:	card has a conditional access slot for scrambled channels

The autodetected values are determined by the cards' "response string".
In your logs see f. ex.: dst_get_device_id: Recognize [DSTMCI].
For bug reports please send in a complete log with verbose=4 activated.
Please also see Documentation/dvb/ci.txt.

2b) Running multiple cards
--------------------------

Examples of card ID's:

Pinnacle PCTV Sat:		 94
Nebula Electronics Digi TV:	104
pcHDTV HD-2000 TV:		112
Twinhan DST and clones:		113
Avermedia AverTV DVB-T 771:	123
Avermedia AverTV DVB-T 761:	124
DViCO FusionHDTV DVB-T Lite:	128
DViCO FusionHDTV 5 Lite:	135

Notice: The order of the card ID should be uprising:
Example:
	$ modprobe bttv card=113 card=135

For a full list of card ID's please see Documentation/video4linux/CARDLIST.bttv.
In case of further problems please subscribe and send questions to the mailing list: linux-dvb@linuxtv.org.

Authors: Richard Walker,
	 Jamie Honan,
	 Michael Hunold,
	 Manu Abraham,
	 Uwe Bugla,
	 Michael Krufky