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

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

Speedup strncpy_from_user and strnlen_from_user by using the search string
instruction in the secondary space mode.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

From: Guillaume Morin <guillaume@morinfr.org>

This patch improves the memory detection logic.  It detects any amount of
holes in the memory layout up to MEMORY_CHUNK blocks of available memory.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Arnd Bergmann <arnd@arndb.de>

This should catch almost all s390 device drivers
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Arnd Bergmann <arnd@arndb.de>

Lots of trivial changes to make sparse happy on s390 arch code, mostly
__user annotations.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Karsten Keil <kkeil@suse.de>

Solves a endless IRQ loop for Tigerjet 320 based ISDN cards.
Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Jorn Engel <joern@wohnheim.fh-wedel.de>

Remove Volker as an NCP maintainer, he hasn't touched it in about 7 or
8 years, according to himself.  Volker has acked this change.
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Hugh Dickins <hugh@veritas.com>

Oleg's patch was good in that exit_mmap usually does the un-accounting; but
dup_mmap still needs its own un-accounting for the case when it has charged
for a vma, but error before it's inserted into child mm's list.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Davide Libenzi <davidel@xmailserver.org>

This is a sanity check on the size parameter.  Nothing explodes w/out, but
the conversion to unsigned simply triggers a big allocation.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

As Roland McGrath <roland@redhat.com> points out, we need to zero
task->it_virt_value to prevent timer-based signal delivery, not
->it_virt_incr.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Lack of argument decls causes this warning:

arch/i386/mach-generic/../mach-es7000/es7000plat.c:53: warning: function declaration isn't a prototype

Let's stick the extern declaration in a header, which is where they always
should be.

Cc: "Brown, Len" <len.brown@intel.com>
Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Andy Whitcroft <apw@shadowen.org>

Both modprobe_path and hotplug_path are arbitrarily sized at 256 bytes and
that size is also expressed directly in the sysctl code.  It seems
reasonable to define a standard length and use that for consitancy.  This
patch introduces the constant KMOD_PATH_LEN and uses that.
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Anton Altaparmakov <aia21@cam.ac.uk>

A filesystem's ->writepage() implementation nowadays must run either
redirty_page_for_writepage() or the combination of set_page_writeback()/
end_page_writeback().  Failure to do so leaves the page itself marked clean
but it is tagged as dirty in the radix tree (PAGECACHE_TAG_DIRTY).  This
incoherency can lead to all sorts of hard-to-debug problems in the
filesystem like having dirty inodes at umount and losing written data.

The patch updates Documentation/filesystems/Locking to reflect this
requirement.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Reduce stack consumption in sync_inodes_sb() via read_page_state().
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Use the new read_page_state() in page-writeback.c to avoid large on-stack
structures.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Use the new read_page_state() in vmscan.c to avoid large on-stack structures.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

struct page_state is large (148 bytes) and we put them on the stack in awkward
code paths (page reclaim...)

So implement a simple read_page_state() which can be used to pluck out a
single member from the all-cpus page_state accumulators.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Nick Piggin <nickpiggin@yahoo.com.au>

Replace lots of parameters to functions in mm/vmscan.c with a structure
struct scan_control.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Nick Piggin <nickpiggin@yahoo.com.au>

Move the invocation of ->writepage for to-be-reclaimed pages into
its own function "pageout".

From: Nikita Danilov <nikita@namesys.com>
with small changes from Nick Piggin
Signed-off-by: Nick Piggin <nickpiggin@cyberone.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Page reclaim bales out very early if reclaim isn't working out for !__GFP_FS
allocation attempts.

It was a fairly arbitrary thing in the first place and chances are the caller
will simply retry the allocation or will do something which is disruptive to
userspace.  So remove that code and do much more scanning.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Teach page reclaim to understand synchronous ->writepage implementations.

If ->writepage completed I/O prior to returning we can proceed to reclaim the
page without giving it another trip around the LRU.

This is beneficial for ramdisk-backed S_ISREG files: we can reclaim the file's
pages as fast as the ramdisk driver needs to allocate them and this prevents
I/O errors due to OOM in rd_blkdev_pagecache_IO().
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

NUMA-Q requires CONFIG_NUMA and CONFIG_DISCONTIGMEM to build.

Cc: Martin J. Bligh <mbligh@aracnet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

Voyager doesn't support HT, so smp_num_siblings doesn't exist.

Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

Voyager doesn't compile any of the APIC or IO-APIC -related code in
arch/i386/kernel/ at all -- so it's a logical impossibility that this could
ever work.

Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

mm/mempolicy.c: In function `verify_pages':
mm/mempolicy.c:246: warning: implicit declaration of function `kmap_atomic'
mm/mempolicy.c:249: warning: implicit declaration of function `kunmap_atomic'

pte_offset_map() invokes kmap_atomic() via macro, without including the
required header.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Andi Kleen <ak@suse.de>

Originally by Juergen Kreileder, changed by me.

The test for unhandled signals was wrong.  Correct it.  This helps Java
users, who would see bogus printks in their kernel logs previously.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Arnd Bergmann <arnd@arndb.de>

On s390, kmem_bufctl_t was added inside of an #ifdef, breaking
64 bit builds.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Andi Kleen <ak@suse.de>

Fix more bad issues in the x86-64 machine check handler. 

- Actually test status after reading it from the register, not before.

- Check the UC bit instead of the PCC bit to detect the bank which caused
  the exception.

- Add tolerant==3 level for easier testing. This will avoid any panics.

- Don't threat bank overflows as fatal - they must have come from a non
  fatal exception, which should not cause a panic.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Bruno Ducrot <poup@poupinou.org>

I'm trying to replace for_each_cpu() with for_each_cpu_mask() in
arch/i386/kernel/cpu/cpufreq/p4-clockmod.c

Unfortunately, though, davej pointed me that for_each_cpu_mask() is not
defined in -bk if CONFIG_SMP is not defined.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Discard FPU exceptions in exit and execve on x86-64 too.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

sparse tokenizes everything. Including #include
directives. Which means that it doesn't want to
see "//" in a include filename, since that's a
comment outside of a string.

And inside of a string it's too dark to read.

We need to clear all exceptions before synchronizing
with the FPU, since we aren't ready to handle a FP
exception here and we're getting rid of all FP state.

Special thanks to Alexander Nyberg for reports and
testing. Alternate patches by Sergey Vlasov and Andi
Kleen, who both worked on this.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>  

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

- Modify fs/ntfs/ntfs_readdir() to copy the index root attribute value
  to a buffer so that we can put the search context and unmap the mft
  record before calling the filldir() callback.  We need to do this
  because of NFSd which calls ->lookup() from its filldir callback()
  and this causes NTFS to deadlock as ntfs_lookup() maps the mft record
  of the directory and since ntfs_readdir() has got it mapped already
  ntfs_lookup() deadlocks.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

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

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

into starflyer.(none):/home/airlied/drm/drm-2.6

and/or d->send_sizes.  When these functions are called from gamma_dma,
these pointers are user pointers and are thus not safe to deref.  This patch
copies over the pointers inside gamma_dma_priority and
gamma_dma_send_buffers.
Submitted-by: Robert T. Johnson <rtjohnso@eecs.berkeley.edu>
Signed-off-by: Dave Airlie <airlied@linux.ie>

This bug took forever to debug (just ask Ben :-).

When we move the completion event from the failed request to the sense
request, we risk either the initial complete and then later complete on
a long gone ->waiting.  I think this business of moving the completion
structure to the request sense is a bit bogus and always has been, and
the bug is fixed nicely by just rewriting this logic a bit.  So instead
we simply unconditionally dequeue the failed request (regardless of
whether it was REQ_PC or REQ_BLOCK_PC), and pass a reference to it in
the sense request.  When the sense completes, we call end io on the
originally failed request (which does the complete() etc).
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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