Fixed dereferencing userland pointers, general idiocy in parsing.

caddr_t is gone (most of the instances were void __user * in disguise,
the rest - void *)

Fixed b0rken ioctls in mpu401 and pss - they used to dereference
userland pointers with no checks.

From: Neil Brown <neilb@cse.unsw.edu.au>

The recentish change to fh_compose not consuming a reference to the passed
dentries missed this needed dget.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: <Andries.Brouwer@cwi.nl>

The "Probably init should be changed" happened almost ten years ago.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Robert Love <rml@ximian.com>

Update Robert's email address
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: <Valdis.Kletnieks@vt.edu>

Thomas Dunbar used to be working in one of the Dean's offices here.  He's
now down the hall from me (and has been for several years, actually).  So
let's fix the crufty pointers.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: NeilBrown <neilb@cse.unsw.edu.au>

d_count == 1 is no guarantee that dentry is on the dentry_unused list, even
if it has just been incremented inside dcache_lock, as dput can decrement
at any time.

This test from Greg Banks is much safer, and is more transparently correct.

Cc: Maneesh Soni <maneesh@in.ibm.com>, Dipankar Sarma <dipankar@in.ibm.com>
From: Greg Banks <gnb@melbourne.sgi.com>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Davide Libenzi <davidel@xmailserver.org>

We're now sending epi->event.events while it should be sending
epi->revents.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Colin Leroy <colin@colino.net>

I'm maintaining this driver i wrote :)
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: "Luiz Fernando N. Capitulino" <lcapitulino@prefeitura.sp.gov.br>
Signed-off-by: Luiz Capitulino <lcapitulino@prefeitura.sp.gov.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Adam Lackorzynski <adam@os.inf.tu-dresden.de>

This patch fixes a typo (intruupt), a possible confusion (ms should be
microseconds here, not milli), and adds descriptions for the missing
functions.
Signed-off-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Brian Gerst <bgerst@didntduck.org>

Initialize the general caches using SLAB_PANIC instead of BUG().
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: <thornber@redhat.com>

Change of device-mapper maintainer
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Kevin Corry <kevcorry@us.ibm.com>

dm-table.c: Proper usage of dm_vcalloc. [Dave Olien]
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Kevin Corry <kevcorry@us.ibm.com>

DM: Add static and __init qualifiers. [Dave Olien]
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Kevin Corry <kevcorry@us.ibm.com>

Some testing of DM multipath has turned up a problem with the DEVICE_WAIT
command.  In the tests, while performing a DEVICE_WAIT on a multipath device,
the command sometimes returns immediately, even though the event-number is
correct and no path-failure has occurred to trigger an event.  The problem was
tracked down to the call to schedule() in dev_wait(), which would return even
though it was not woken up by a DM table event.

This patch moves the responsibility for waiting from the ioctl interface into
the core driver, and uses wait_event_interruptible() instead of relying on
wait-queues and schedule().
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Kevin Corry <kevcorry@us.ibm.com>

In __map_bio(), if the target returns an error while mapping the I/O, the
cloned bio needs to be freed.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Kevin Corry <kevcorry@us.ibm.com>

Fix an OB1 error when calculating an output buffer size, that could cause a
missing null termininator in the 'list devices' ioctl results.  [Steffan
Paletta]
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Matt Mackall <mpm@selenic.com>

I noticed that my vmlinux BSS had grown from 17k to 45k between 2.6.5 and
2.6.6.  8k was moving a pair of objects in head.S from the text section to
bss, 8k was the introduction of IRQ stacks, while the remainder (12k) was
page alignment slop, some of it spurious.  The following patch brings BSS
down to the expected 33k.

Throw the IRQ stacks into the page aligned section to avoided wasted BSS
space.  While we'd expect this to save up to 4k, this saves over 10k of BSS
here due to gcc3.3 spuriously aligning other objects in the vicinity.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

Adds a `make checkstack' target.  This disassembles and parses vmlinux and
*.ko, generating a sorted list of stack hogs, eg:

0xc0100663 huft_build:                                  1456
0xc01022d3 huft_build:                                  1456
0xc0103127 inflate_dynamic:                             1328
0xc0101487 inflate_dynamic:                             1324
0xc010131f inflate_fixed:                               1168
0xc0102fb7 inflate_fixed:                               1168
0x00000003 sha512_transform:                            984
0xc024aee3 Vpd:                                         952
0x00000003 twofish_setkey:                              804
0x000060c3 isd200_action:                               792
0x0000e6cb nfsd4_proc_compound:                         760
0xc0249087 SkPnmiGetStruct:                             712
....


Supported architectures are alleged to be arm, x86, ia64, mips, mips64, ppc,
ppc64 and s390x.
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: Anton Blanchard <anton@samba.org>

A few xmon fixes:

- Check we have the set-indicator property before calling rtas.
- We were printing a cpu number in one place with %s, fix.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Matt Porter <mporter@kernel.crashing.org>

Reorg PPC DMA API. Use PCI DMA API wrapper and add coherent alloc in irq.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Matt Porter <mporter@kernel.crashing.org>

Fixes PPC4xx from the do_page_fault()->handle_page_fault() change.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Tom Rini <trini@kernel.crashing.org>

When the 826x enet driver was made to call register_netdev/free_netdev,
no one declared 'err' in the function.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

This patch replaces schedule_timeout() with the new msleep().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Colin Leroy <colin@colino.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

This patch fixes the lack of /dev/adb in kernel 2.6.7-rc1.  The call to
devfs_mk_cdev() has probably been removed too soon.  Hope this one is
better than the last one ;)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Colin Leroy <colin@colino.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

This patch fixes a typo preventing channel B from working on the Rx path of
pmac zilog (never calling tty_flip_*).  I think I never tested channel B :)

Thanks to Hollis Blanchard for spotting the bug.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: David Gibson <david@gibson.dropbear.id.au>

Currently the get_vsid() and get_kernel_vsid() functions have a test which
enables a different VSID algorithm for debugging.  Using a dumb VSID
algorithm for stressing the hash table is a reasonable debugging tool, but
switching it at runtime makes no sense at all.  Plus it adds another test
and memory access to the performance critical SLB miss path.

This patch removes the test, replacing it with a compile time switch.  It
seems to make a measurable, although small speedup to the SLB miss path
(maybe 0.5%).
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The recent nfsd fix was too fancy.  When initialising d_bucket to an "invalid"
value, all we need is a NULL in there.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>