Sanitize 66MHz clock use: "enable" 66MHz clock before starting UDMA3/4/5
read/write transfer and "disable" it after finishing transfer.

- fixes timings for non-UDMA3/4/5 operations (correct 33MHz timings are used)

- allows using UDMA3/4/5 modes on a capable drive even if non-UDMA3/4/5 drive
  is present on the same channel

- fixes corner case when one drive on the channel was using UDMA66/100 + LBA48
  (so clock was enabled/disabled for each read/write) and other one was using
  UDMA66/100 + LBA28, it could happen that request on LBA48 drive disabled
  66MHz clock and it was not enabled for the next transfer on LBA28 drive

drive->id is now always present even if no device is attached,
therefore check for drive->present instead.

This fixes bugzilla bug #1431.

Always tune controller PIO timings.  This fixes lockup during PIO access
(ie. 'cat /proc/ide/hda/identify') when Promise BIOS is disabled.

into home.osdl.org:/home/torvalds/v2.5/linux

into home.osdl.org:/home/torvalds/v2.5/linux

into home.osdl.org:/home/torvalds/v2.5/linux

The config entries etc were already removed earlier.

From: Chris Mason <mason@suse.com>

The v3 reiserfs_file_write func doesn't do any write throttling, which
leads to a variety of problems.  Here's a patch that makes
reiserfs_file_write call balance_dirty_pages_ratelimited, and exports that
func for module usage.

Remove now-unused 2.4 back-compat code.

gcc miscompiles this. Scary.

- A couple of them are using alloca (via DECLARE_BITMAP) and this generates
  a cannot-inline warning with -Winline.

- These functions are too big to inline anwyay.

From: Andries.Brouwer@cwi.nl

Remove obsolete CLONE_DETACHED

From: Sam Ravnborg <sam@ravnborg.org>

Modify MAINTAINERS to reflect the reality in maintainership for kbuild.
This is ack'ed with Michael Elizabeth Chastain and Kai Germaschewski.

I removed the list and web-site since they are not actively used today.

From: risto.sandvik@helsinki.fi

Everything freezes when trying to play sounds using the alsa driver opl3sa2
(kernel supplied or 1.0.0rc2) on an Acer Extensa series laptop with the Ali
M1533 PCI to ISA bridge.  Problem exists both in the 2.6 and 2.4 series of
kernels.

Adding AL_M1533 to drivers/pci/quirks.c fixes the problem for both.  This has
been a known problem since 2.2.x (see
http://www.mfn.unipmn.it/~sitta/linux503.html)

From: David Howells <dhowells@redhat.com>

Here's a patch to improve the AFS linux support. It:

 (1) Includes Pete's patch to skip the colon in the volume name, compile
     directly into the kernel, and not try to access non-existent caching
     routines.

 (2) Changes if (...) BUG() to BUG_ON()

 (3) Gets rid of typedefs.

 (4) Changes list_for_each() into list_for_each_entry().

 (5) Adds more whitespace and wraps lines to please the CodingStyle sticklers.

From: David Howells <dhowells@redhat.com>

Here's a patch to fix some bugs in my RxRPC code, including the fix for the
transport initialisation failure recovery spotted by Pete Zaitcev.

It also inserts some extra spaces in a few places.

From: Jes Sorensen <jes@trained-monkey.org>

The included patch removes the usage of weak symbols from sgiioc4.c now
that we have the Kconfig issue sorted as well as cleans up the error no
handling (instead of return 1 on error) and adds a check for the return
value on snia_pci_endian_set as suggested by Christoph.

From: James Morris <jmorris@redhat.com>

AFS has an unused strdup() implementation.

From: Xavier Bestel <xavier.bestel@free.fr>

Within the body of this macro we are accessing rq->bio, but `bio' is an arg
to the macro.  If someone uses this macro with some variable which is not
named `bio' it won't compile.

So use a more-likely-to-be-unique identifier for the macro.

From: Jeff Muizelaar <muizelaar@rogers.com>

The attached patch lets the seq_file api take care of buffer allocation
instead of doing it by hand.

From: Matt Mackall <mpm@selenic.com>

Experimenting with trying to use cond_syscall for a few arch-specific
syscalls, I discovered that it can't actually be used outside the file
in which sys_ni_syscall is declared because the assembler doesn't feel
obliged to output the symbol in that case:

weak.c:

#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall");
cond_syscall(sys_foo);

$ nm weak.o
         U sys_ni_syscall

One arch (PPC) is apparently trying to use cond_syscall this way
anyway, though it's probably never been actually tested as the above
test was done on a PPC.

After trying a bunch of tricks to get it to work nicely, I decided
there are basically two alternatives: make weak versions of
sys_ni_syscall wherever they're wanted or put the arch-specific
cond_syscalls in kernel/sys.c where sys_ni_syscall is defined.

The former approach is a bit crufty and doesn't actually do the right
thing in practice as you'll get multiple copies of sys_ni_syscall in
your final image.

The latter introduces some slight arch-pollution in sys.c, but as
arch-specific cond_syscalls aren't all that frequent, it should be
pretty minor. So here's a patch to move the current offender to sys.c:

From: Jes Sorensen <jes@trained-monkey.org>

The following patch removes a couple of null-ilizers of global variables.
Not a big deal, but every byte helps in the .data segment ;-)

From: Roland McGrath <roland@redhat.com>

Julie DeWandel noticed that in the error case where elf_map has failed,
load_elf_interp will (at the out_close: label) return the `error' variable,
but that will contain the result of a prior operation and not the error
number from elf_map.

From: David Sanders <linux@sandersweb.net>

Patch adds support for another pnp modem in 2.6 kernel.

From: Joe Korty <joe.korty@ccur.com>

task_running(rq,p) is equivalent to (rq->curr == p) only for some
architectures.

- It's using & where it meant to use &&.  (Randy Dunlap)

- It has two callsites - uninline it.

From: Adrian Bunk <bunk@fs.tum.de>

four months ago, Rolf Eike Beer <eike-kernel@sf-tec.de> sent a patch
against 2.6.0-test5-bk1 that converted several if ...  BUG() to BUG_ON()

This might in some cases result in slightly faster code because BUG_ON()
uses unlikely().

From: David Mosberger <davidm@napali.hpl.hp.com>

With gcc-3.4 we need "attribute((used))" declarations to get "make
modules_install" to work.

Otherwise these sections get dropped from the final image (I assume).

From: David Mosberger <davidm@napali.hpl.hp.com>

There is some EFI-related code which is present in the ia64 build but is not
needed: variable efi_enabled is always zero.

The patch fiddles with the efi_enabled definition to arrange for
`efi_enabled' to be constant zero or constant one in those situations where
this can be guaranteed.

The test for whether an inode is using journalled, ordered or writeback data
is incorrect and can lead to ext3_set_aops() giving the inode the wrong set
of address_space_operations.  Fix.  (Spotted by Jan Kara).

From: Christoph Hellwig <hch@lst.de>

Currently xfs has a per-bdev (and XFS filesystem uses up to three underlying
block devices) object that Al complained about loudly that it should be gone.

But for that to happen without rewriting half of XFS (and changing layering
in a way that we don't really want) we need an additional fs-private variable
in struct block_device.

From: mark@borgerding.net

Access times of tmpfs dirs do not get updated on readdir.  This can cause
empty dirs to get tmpwatch'd too early, b/c atime never changes even though
the dir is in use.

From: Anton Blanchard <anton@samba.org>, me.

Two uses of the FIXADDR_USER_START/END things are problematic:

a) ppc64 wants the FIXADDR area to be at a different location on 32bit and
   64bit tasks.  On 32bit we want it just below 4GB but that gets in the way
   on 64bit.  By putting both right at -(some small amount) we can also use
   some ppc tricks to get there real quickly (single instruction branches).

b) We assume that FIXADDR_USER_START and FIXADDR_USER_END are constants.
   This breaks the UML build.

Fixes:

- Call it all gate. We currently have half the stuff called fixmap and
  the other gate, lets be consistent.

- Create in_gate_area(), get_gate_vma() and use it in both places

- Provide defaults for in_gate_area/get_gate_vma, allowing an arch to
  override it. (I used CONFIG_* but am open to better suggestions here)

- The /proc/pid/maps vma wasnt marked readable but the get_user
  vma was. That sounds suspicious to me, they are now both the same VMA
  and so have the same (read,exec) permissions

From: Ivan Kokshaysky <ink@jurassic.park.msu.ru>

When CONFIG_SMP is not set, spinlock_t is an empty structure, so its
address has arbitrary alignment.

The prefetch instructions with unaligned address don't have visible side
effects on alphas with SRM console (except performance degradation) - the
PALcode handles unaligned traps caused by prefetch instructions internally.
However, on old AlphaBIOS/MILO boxes unaligned prefetch leads to unhandled
alignment trap and kernel panic.

From: Pavel Machek <pavel@ucw.cz>

This adds proper suspend/resume support for PIT.  That means that clock are
actually correct after suspend/resume.

From: Dominik Brodowski <linux@dominikbrodowski.de>

Too many users use the p4-clockmod cpufreq driver instead of the more
advanced speedstep-centrino, speedstep-ich or even acpi drivers.  All of
the latter (usually) provide voltage scaling, while the p4-clockmod driver
only offers a variant of frequency scaling.  So, warn users if they try out
this driver instead.

Also, instead of using a local copy, use the speedstep_lib infrastructure
for detecting the processor speed.  Adding the Pentium-M get_frequency
function to that module only costs about 200 bytes in object size.

From: Sam Ravnborg <sam@ravnborg.org>

If the user decides to not write the config file out, menuconfig exits with
a non-zero code.  This causes make to allege that there was an error.

From: Trond Myklebust <trond.myklebust@fys.uio.no>

The following reversion is what fixes my regression.  That puts the
sequential read numbers back to the 2.6.0 values of ~140MB/sec (from the
current 2.6.1 values of 14MB/second)...

We were triggering I/O of the `ahead' when we hit the last page in the
`current' window.  That's bad because it gives no pipelining at all.

So go back to full pipelining.

It's not at all clear why this change made a 10x difference in NFS
throughput.

From: Ram Pai <linuxram@us.ibm.com>

Remove the up-front readahead code from the core pagecache read
function: it's really bad for large reads.

From: Nikita Danilov <Nikita@Namesys.COM>

This patch initializes zone->{prev,temp}_priority to DEF_PRIORITY.
Otherwise they are left zeroed, and first run of VM scanner thinks that
zones are under enormous stress.