Lots of occurences of the same bug..

From: Meelis Roos <mroos@linux.ee>

This is self-explanatory - former SunDisk renamed itself to SanDisk and
now there are flash disks with both names.

 - we could pass MS_ACTIVE in mount flags and it would be passed into
   ->get_sb(), leading to interesting failure modes.  This flag is only
   for internal use (it's set once fill_super is complete and reset
   before the inode eviction on umount); made sure that we never get
   tricked into having it set it too early.

 - a bunch of filesystems force MS_NODIRATIME on mount but forgot to do
   the same on remount.  Fixed.

 - a bunch of r/o filesystems did force MS_RDONLY on mount but forgot to
   do the same on remount.  Fixed.

 - jff2->remount_fs() was buggy - it played with sb->s_flags instead of
   doing modifications to *flags (->s_flags will be overwritten using
   *flags right after the call of ->remount_fs()).  Moreover, it tried
   to do the wrong thing - it should just enforce noatime and be done
   with that.  Fixed, ACKed by maintainer.

 - we should force noatime both on mount and remount.  Fixed.

 - same problem as with sysv - mount-time checks for fs being good for
   writing are absent on remount.  Check added.

 - several variants of sysv fs are supported only r/o.  Driver does
   force r/o on mount, but doesn't do anything on remount.  As the
   result, one can remount them r/w and results are Not Pretty(tm).
   Missing checks added, code cleaned up. 

 - we had double-brelse() in v7fs - if sanity checks on root inode will
   succeed, but allocation of root dentry fails, we brelse() the same
   buffer_head twice.  Fixed.

into nuts.davemloft.net:/disk1/BK/net-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

The low level kernel interface to RTAS (the firmware runtime services)
was plagued with races that could cause from bogus results of RTAS
operations to total machine crashes in some circumstances. This patch
fix the ones I could identify, hoping I didn't miss any. I also added
a WARN_ON (well, it's asm equivalent) to enter_rtas to make sure we
never _ever_ try to call that with interrupts enabled.

This fix comes from ppc32. Always initialise dn->type and dn->name so
that code doesnt have to check for NULL everywhere. There is at least
one bug report where we oopsed because of this.

We have been debugging some strange fails where we branch to 0 in real
mode. At the moment this results in the cpu running through the
initialisation code and failing somewhere well into it.

The following patch uses the featuring nop'ing code to remove the branch
at real address 0 so it falls through to a trap instruction and gets
caught early.

This adda nmi_watchdog=2 support to the Pentium M processor.  The P-M is
a P6 chip, but it shares some chipset logic with the Pentium 4, so it
requires this workaround to function.

Without this patch, NMI gets stuck after 1 count.  With it, the NMI
fires and breaks me out of UHCI-related hard lockups. 

This patch is basically a modified version of the same patch for
oprofile. See the threaded discussion here:

	http://lkml.org/lkml/2004/2/12/181

into debian.org:/usr/src/kernel/ieee1394-2.6

Jeff Garzik notes that the previous cleanup highlights a bug:
>
> 	static const struct card_info {
> 	    zorro_id id;
> 	    const char *name;
> 	    unsigned int offset;
> 	} cards[] __initdata = {
>
> and the lone user is __devinit:
>
> static int __devinit zorro8390_init_one(struct zorro_dev *z,
>                                        const struct zorro_device_id *ent)

Here's the fix..

The author apparently didn't understand that only the mach-default
include directory is included by fallback for header files only.  You
can't stick a .c file in mach-default and expect all subarchs to be able
to use it.

The correct fix is to put std_resources.c in the kernel directory and
give it its own Kconfig symbol for conditional compile so that subarchs
may choose to include it or not.

The last copy_from_user patch to the vicam driver broke compilation with
VICAM_DEBUG on.

There is also another copy_from_user missing in case VIDIOCSPICT. 

This fixes both issues.

into ppc970.osdl.org:/home/torvalds/v2.6/linux

There's a bug in the x86 code in that it sets the boot CPU to zero.

This isn't correct since some subarch's use physically indexed CPUs. 
However, subarchs have either set the boot cpu before irq_INIT() (or
just inherited the default zero from INIT_THREAD_INFO()), so it's safe
to believe current_thread_info()->cpu about the boot cpu.

into kroah.com:/home/greg/linux/BK/driver-2.6

This adds IOMMU support & IOMU virtual merging to the default g5 config.

This will not impair performances of machines that don't need the iommu
(the kernel will only enable it if you have more than 2Gb of RAM, though
you can explicitely enable it using a command line argument).

The current code has a subtle race where 2 hash PTEs can be inserted
for the same virtual address for a short period of time. There should
not be a stale one as the "old" one ultimately gets flushed, but the
architecture specifies that having two hash PTE is illegal and can
result in undefined behaviour.

This patch fixes it by never clearing the _PAGE_HASHPTE bit when
doing test_and_clear_{young,dirty}. That means that subsequent faults
on those pages will have a bit more overhead to "discover" that the
hash entry was indeed evicted.

It also adds a small optisation to avoid doing the atomic operation
and the hash flush in test_and_clear_dirty when the page isn't dirty
or when setting write protect while it's already set.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

The new message queue interface needs the following patch to get it working
on s390 (31-bit, 64-bit and 31-bit compat).

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

This patch adds the TIF_SYSCALL_AUDIT option to the s390 ptrace interface.

From: Andi Kleen <ak@suse.de>

Add POSIX mqueue support to x86-64.

From: Jan Kara <jack@ucw.cz>

Journalled quota support for ext3: The patch consists of two parts - ext3
changes and changes in generic quota code.  The main idea of the changes is
that a transaction is always started before any operation which changes quota
file and dirtifying of the quota causes its write to disk.  These two changes
assure that quota change is journalled into the same transaction as the file
change and hence after journal replay quota is consistent with the filesystem
state.  As during journal replay inodes from orphan list are deleted/truncated
we have to do quota_on before the replay of the orphan list - this problem is
solved by additional mount options to ext3 with quota file names and format.

Some changes in generic code were also needed to assure that quota structure
in file is always allocated and so ordinary quota operations (like
adding/deleting a block/inode) need only a few blocks from the transaction.

From: Chris Wright <chrisw@osdl.org>

SUSv3 doesn't seem to specify one way or the other.  I don't have the POSIX
specs, and the old docs I have suggest that mq_open() creates an object
which is to be closed upon exec.

Jakub said:

  I think it is valid and required:

    http://www.opengroup.org/onlinepubs/007904975/functions/exec.html

    All open message queue descriptors in the calling process shall be
    closed, as described in mq_close()

  I'll add a new test for this into glibc testsuite.

Fix various bogons and outright lies.

From: Jakub Jelinek <jakub@redhat.com>

	mq_notify (q, NULL)

and
	struct sigevent ev = { .sigev_notify = SIGEV_NONE };
	mq_notify (q, &ev)

are not the same thing in POSIX, yet the kernel treats them the same.  Only
the former makes the notification available to other processes immediately,
see

	http://www.opengroup.org/onlinepubs/007904975/functions/mq_notify.html

Without the patch below,

	http://sources.redhat.com/ml/libc-hacker/2004-04/msg00028.html

glibc test fails.

I looked at mq in Solaris and they behave the same in this regard as Linux
with this patch.  Kernel with this patch passes both Intel POSIX testsuite
(with testsuite fixes from Ulrich) and glibc mq testsuite.

into ppc970.osdl.org:/home/torvalds/v2.6/linux