Fix up an smp race introduced in 2.6.11-rc1
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

With Rik van Riel <riel@redhat.com>

Simply running "dd if=/dev/zero of=/dev/hd<one you can miss>" can cause
excessive amounts of dirty lowmem pagecache, due to the blockdev's
non-highmem page allocation strategy.

This patch effectively lowers the dirty limit for mappings which cannot be
cached in highmem, counting the dirty limit as a percentage of lowmem
instead.  This should prevent heavy block device writers from pushing the
VM over the edge and triggering OOM kills.
Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix a bug spotted by "Michael S. Tsirkin" <mst@mellanox.co.il>

Introduce a simple helper, vfs_ioctl(), so that both sys_ioctl() and
compat_sys_ioctl() call the security hook in all cases and without
duplication.
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

When some hardware setups or architectures do not allow OProfile to use
performance counters, OProfile operates in timer mode.

But, from 2.6.11-rc1, we need to specify the module parameter "timer=1" to
work on timer interrupt mode.  Change things so that we detect the absence of
the high-resolution timer and fall back to timer-based profiling
automatically.

Furthermore we can easily get oops by reading /dev/oprofile/cpu_type.
Signed-off-by: Akinobu Mita <amgta@yacht.ocn.ne.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/mips/lib/csum_partial_copy.c:21: error: conflicting types for `csum_partial_copy_nocheck'
include/asm/checksum.h:65: error: previous declaration of `csum_partial_copy_nocheck'
arch/mips/lib/csum_partial_copy.c:38: error: conflicting types for `csum_partial_copy_from_user'
include/asm/checksum.h:38: error: previous declaration of `csum_partial_copy_from_user'
make[1]: *** [arch/mips/lib/csum_partial_copy.o] Error 1
make: *** [arch/mips/lib] Error 2
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

We have two global variables called "debug".

The attached patch cleans up various aspects of dibusb module argument
handling, so it's a bit larger than just renaming "debug".
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- Build fix for older gcc's

- Don't typecast when assigning between void*'s and other pointers.

cc: <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arguments.

And make it non-inlined.

This fixes a bug in the current tree preventing the sysfs module
parameters from being able to be changed at all from userspace.  It's as
if someone just forgot to write this function...
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The gcc4 signedness warning fix forgot to update the declarations in
include/asm-m68k/checksum.h.

Remove __exit from aoeblk_exit (to allow it to be called from __init code).

Remove register_blkdev into aoe_init (it's done in aoemain.c).
Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

into cantab.net:/home/src/ntfs-2.6

      compiled without debug.  This avoids a possible denial of service
      attack.  Thanks to Carl-Daniel Hailfinger from SuSE for pointing this
      out.

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

Signed-off-by: David S. Miller <davem@davemloft.net>

- Fix TSO for 5750 chips by setting tcp checksum field to 0 for TSO packets
- Add TG3_FLG2_HW_TSO flag for 5750 and newer chips that use the same TSO
  scheme
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If we forward a fragmented packet, we can have ip_summed
set to CHECKSUM_HW or similar.  This is fine for local
protocol processing, but once if we are forwarding this
packet we want to reset ip_summed to CHECKSUM_NONE.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

Nothing in the kernel is using bcopy right know, and that is a good thing.
Why? Because a lot of the architectures implement a broken bcopy()....
the userspace standard bcopy() is basically a memmove() with a weird
parameter order, however a bunch of architectures implement a memcpy() not a
memmove().

Instead of fixing this inconsistency, I decided to remove it entirely,
explicit memcpy() and memmove() are prefered anyway (welcome to the 1990's)
and nothing in the kernel is using these functions, so this saves code size
as well for everyone.
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

[ Side note: the only reason for bcopy appears to be totally ancient
  gcc versions for OSF/1, used to originally cross-compile Linux on
  alpha. Possibly some other similar cases. Time to move on ;-]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

Duh. Freeing the main buffers can _cause_ the temporary
page to be created.

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

Patch from Ben Dooks

This patch moves all the machine/arch specific bits out of
arch/arm/kernel/debug.S and places them into the include
directories for those given architectures. The debug macros
are placed into include/asm-arm/arch-*/debug-macro.S.
The aim is to clean-up the debug.S code and make it easier to
modify a single-architecture without affecting the entire
debug.S file.
The patch also removes CONFIG_ARCH_FTVPCI, which no longer
exists anywhere else in the kernel.
All new include files have the original copyright notice
from arch/arm/kernel/debug.S.
Note, not all architectures modified here have been built
and/or tested due to lack of available machines, or
problems building for them (no defconfig available, or
problems with kernel build).

Signed-off-by: Ben Dooks
Signed-off-by: Russell King

Unfortunately, some changes to GCC prevents fiq.c expressing the
constraints for the assembly setting the FIQ register set.  Warn
people with later gcc toolchains that they can expect failure to
occur.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>

Signed-off-by: Russell King <rmk@arm.linux.org.uk>

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Anton Blanchard wrote:
>Your recent patch looks to break module kallsyms lookups....
>It looks like if CONFIG_KALLSYMS_ALL is set then we never look up module
>addresses.

Separate lookups for kernel and modules when CONFIG_KALLSYMS_ALL=y.
Signed-off-by: Keith Owens <kaos@ocs.com.au>
Acked-by: Chris Wedgwood <cw@f00f.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix warning:

In file included from include/asm/numa.h:5,
                 from arch/x86_64/kernel/setup64.c:27:
include/asm/numnodes.h:6:1: warning: "NODES_SHIFT" redefined
In file included from include/linux/mmzone.h:13,
                 from include/linux/gfp.h:4,
                 from include/linux/slab.h:15,
                 from include/linux/percpu.h:4,
                 from include/linux/sched.h:33,
                 from arch/x86_64/kernel/setup64.c:11:
include/linux/numa.h:11:1: warning: this is the location of the previous definition

in UP builds.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From Terence Ripperda <tripperda@nvidia.com>

When doing iounmap don't try to change_page_attr back the guard
page that ioremap added.

Since the last round of change_page_attr changes this would
trigger an BUG because the reference count on the changed pages
wouldn't match up.

The problem would be only visible on machines with >3GB of memory,
because only then the PCI memory hole is below end_pfn and
change_page_attr is used.

Fixed for both i386 and x86-64.

This was actually discovered&fixed by Andrea earlier, but I goofed up
while doing the last ioremap fixes merge and this change got lost.
Poor Terence had to debug it again. Sorry about that.

cc: andrea@suse.de
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Undo bogus change that was introduced with kprobes.  It's not
really needed and it breaks some user applications because
it changes the signal for int 3 from SIGTRAP to SIGSEGV.

Cc: <prasanna@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

- If dst/src are equal, memcpy can be used.
- Eliminate register writes which were unused
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Tony Luck <tony.luck@intel.com>

Patch from Christoph Hellwig to:
- irq_desc and irq_to_vector machvecs.  SN2 has it's own versions,
  but they're the same as the generic ones
- kill do do_IRQ and use __do_IRQ directly everywhere
- kill dead X86 ifdefs
- move some variable declarations around in irq.c to recuce # of ifdefs
Signed-off-by: Tony Luck <tony.luck@intel.com>

When I converted the sn2 code over to the new DMA API, I left the old routines
in place and added wrappers to call them from the generic DMA API functions.
This added an unnecessary level of obfuscation since the generic ia64 code
calls those functions when any of the old style PCI DMA API functions are
called.  This patch rectifies the problem making the code much easier to
understand and hopefully a little more efficient (though I'm sure gcc was
already inlining things pretty well, there were a bunch of unnecessary checks
that I took this opportunity to remove).  It also shrinks the size of the sn2
pci_dma.c quite a bit.
 
  pci_dma.c |  480 +++++++++++++++++++-----------------------------------------
  1 files changed, 151 insertions(+), 329 deletions(-)
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

sn2 does early initialization of the SAL so it can use it for early console
support.  Unfortunately, the loop to find the SAL entry point was buggy so
when we tried out new EFI and SAL system table layouts, the loop didn't
terminate.  Here's the fix (doh!, use two different loop counters instead of
one and just return if we find the SAL entry point).
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>