profile/common/kernel-common.git
14 years agox86: Fix double enable_IR_x2apic() call on SMP kernel on !SMP boards
Suresh Siddha [Thu, 1 Apr 2010 01:04:47 +0000 (18:04 -0700)]
x86: Fix double enable_IR_x2apic() call on SMP kernel on !SMP boards

Jan Grossmann reported kernel boot panic while booting SMP
kernel on his system with a single core cpu. SMP kernels call
enable_IR_x2apic() from native_smp_prepare_cpus() and on
platforms where the kernel doesn't find SMP configuration we
ended up again calling enable_IR_x2apic() from the
APIC_init_uniprocessor() call in the smp_sanity_check(). Thus
leading to kernel panic.

Don't call enable_IR_x2apic() and default_setup_apic_routing()
from APIC_init_uniprocessor() in CONFIG_SMP case.

NOTE: this kind of non-idempotent and assymetric initialization
sequence is rather fragile and unclean, we'll clean that up
in v2.6.35. This is the minimal fix for v2.6.34.

Reported-by: Jan.Grossmann@kielnet.net
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: <jbarnes@virtuousgeek.org>
Cc: <david.woodhouse@intel.com>
Cc: <weidong.han@intel.com>
Cc: <youquan.song@intel.com>
Cc: <Jan.Grossmann@kielnet.net>
Cc: <stable@kernel.org> # [v2.6.32.x, v2.6.33.x]
LKML-Reference: <1270083887.7835.78.camel@sbs-t61.sc.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86: Increase CONFIG_NODES_SHIFT max to 10
David Rientjes [Thu, 25 Mar 2010 22:39:27 +0000 (15:39 -0700)]
x86: Increase CONFIG_NODES_SHIFT max to 10

Some larger systems require more than 512 nodes, so increase the
maximum CONFIG_NODES_SHIFT to 10 for a new max of 1024 nodes.

This was tested with numa=fake=64M on systems with more than
64GB of RAM. A total of 1022 nodes were initialized.

Successfully builds with no additional warnings on x86_64
allyesconfig.

( No effect on any existing config. Newly enabled CONFIG_MAXSMP=y
  will see the new default. )

Signed-off-by: David Rientjes <rientjes@google.com>
LKML-Reference: <alpine.DEB.2.00.1003251538060.8589@chino.kir.corp.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoibft, x86: Change reserve_ibft_region() to find_ibft_region()
Yinghai Lu [Thu, 1 Apr 2010 21:32:43 +0000 (14:32 -0700)]
ibft, x86: Change reserve_ibft_region() to find_ibft_region()

This allows arch code could decide the way to reserve the ibft.

And we should reserve ibft as early as possible, instead of BOOTMEM
stage, in case the table is in RAM range and is not reserved by BIOS
(this will often be the case.)

Move to just after find_smp_config().

Also when CONFIG_NO_BOOTMEM=y, We will not have reserve_bootmem() anymore.

-v2: fix typo about ibft pointed by Konrad Rzeszutek Wilk <konrad@darnok.org>

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4BB510FB.80601@kernel.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Peter Jones <pjones@redhat.com>
Cc: Konrad Rzeszutek Wilk <konrad@kernel.org>
CC: Jan Beulich <jbeulich@novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
14 years agox86, hpet: Fix bug in RTC emulation
Alok Kataria [Thu, 11 Mar 2010 22:00:16 +0000 (14:00 -0800)]
x86, hpet: Fix bug in RTC emulation

We think there exists a bug in the HPET code that emulates the RTC.

In the normal case, when the RTC frequency is set, the rtc driver tells
the hpet code about it here:

int hpet_set_periodic_freq(unsigned long freq)
{
        uint64_t clc;

        if (!is_hpet_enabled())
                return 0;

        if (freq <= DEFAULT_RTC_INT_FREQ)
                hpet_pie_limit = DEFAULT_RTC_INT_FREQ / freq;
        else {
                clc = (uint64_t) hpet_clockevent.mult * NSEC_PER_SEC;
                do_div(clc, freq);
                clc >>= hpet_clockevent.shift;
                hpet_pie_delta = (unsigned long) clc;
        }
        return 1;
}

If freq is set to 64Hz (DEFAULT_RTC_INT_FREQ) or lower, then
hpet_pie_limit (a static) is set to non-zero.  Then, on every one-shot
HPET interrupt, hpet_rtc_timer_reinit is called to compute the next
timeout.  Well, that function has this logic:

        if (!(hpet_rtc_flags & RTC_PIE) || hpet_pie_limit)
                delta = hpet_default_delta;
        else
                delta = hpet_pie_delta;

Since hpet_pie_limit is not 0, hpet_default_delta is used.  That
corresponds to 64Hz.

Now, if you set a different rtc frequency, you'll take the else path
through hpet_set_periodic_freq, but unfortunately no one resets
hpet_pie_limit back to 0.

Boom....now you are stuck with 64Hz RTC interrupts forever.

The patch below just resets the hpet_pie_limit value when requested freq
is greater than DEFAULT_RTC_INT_FREQ, which we think fixes this problem.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
LKML-Reference: <201003112200.o2BM0Hre012875@imap1.linux-foundation.org>
Signed-off-by: Daniel Hecht <dhecht@vmware.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
14 years agox86, hpet: Erratum workaround for read after write of HPET comparator
Pallipadi, Venkatesh [Thu, 25 Feb 2010 18:53:48 +0000 (10:53 -0800)]
x86, hpet: Erratum workaround for read after write of HPET comparator

On Wed, Feb 24, 2010 at 03:37:04PM -0800, Justin Piszcz wrote:
> Hello,
>
> Again, on the Intel DP55KG board:
>
> # uname -a
> Linux host 2.6.33 #1 SMP Wed Feb 24 18:31:00 EST 2010 x86_64 GNU/Linux
>
> [    1.237600] ------------[ cut here ]------------
> [    1.237890] WARNING: at arch/x86/kernel/hpet.c:404 hpet_next_event+0x70/0x80()
> [    1.238221] Hardware name:
> [    1.238504] hpet: compare register read back failed.
> [    1.238793] Modules linked in:
> [    1.239315] Pid: 0, comm: swapper Not tainted 2.6.33 #1
> [    1.239605] Call Trace:
> [    1.239886]  <IRQ>  [<ffffffff81056c13>] ? warn_slowpath_common+0x73/0xb0
> [    1.240409]  [<ffffffff81079608>] ? tick_dev_program_event+0x38/0xc0
> [    1.240699]  [<ffffffff81056cb0>] ? warn_slowpath_fmt+0x40/0x50
> [    1.240992]  [<ffffffff81079608>] ? tick_dev_program_event+0x38/0xc0
> [    1.241281]  [<ffffffff81041ad0>] ? hpet_next_event+0x70/0x80
> [    1.241573]  [<ffffffff81079608>] ? tick_dev_program_event+0x38/0xc0
> [    1.241859]  [<ffffffff81078e32>] ? tick_handle_oneshot_broadcast+0xe2/0x100
> [    1.246533]  [<ffffffff8102a67a>] ? timer_interrupt+0x1a/0x30
> [    1.246826]  [<ffffffff81085499>] ? handle_IRQ_event+0x39/0xd0
> [    1.247118]  [<ffffffff81087368>] ? handle_edge_irq+0xb8/0x160
> [    1.247407]  [<ffffffff81029f55>] ? handle_irq+0x15/0x20
> [    1.247689]  [<ffffffff810294a2>] ? do_IRQ+0x62/0xe0
> [    1.247976]  [<ffffffff8146be53>] ? ret_from_intr+0x0/0xa
> [    1.248262]  <EOI>  [<ffffffff8102f277>] ? mwait_idle+0x57/0x80
> [    1.248796]  [<ffffffff8102645c>] ? cpu_idle+0x5c/0xb0
> [    1.249080] ---[ end trace db7f668fb6fef4e1 ]---
>
> Is this something Intel has to fix or is it a bug in the kernel?

This is a chipset erratum.

Thomas: You mentioned we can retain this check only for known-buggy and
hpet debug kind of options. But here is the simple workaround patch for
this particular erratum.

Some chipsets have a erratum due to which read immediately following a
write of HPET comparator returns old comparator value instead of most
recently written value.

Erratum 15 in
"Intel I/O Controller Hub 9 (ICH9) Family Specification Update"
(http://www.intel.com/assets/pdf/specupdate/316973.pdf)

Workaround for the errata is to read the comparator twice if the first
one fails.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
LKML-Reference: <20100225185348.GA9674@linux-os.sc.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@gmail.com>
Cc: <stable@kernel.org>
14 years agobootmem, x86: Fix 32bit numa system without RAM on node 0
Yinghai Lu [Thu, 1 Apr 2010 03:45:27 +0000 (20:45 -0700)]
bootmem, x86: Fix 32bit numa system without RAM on node 0

When 32bit numa is used, free_all_bootmem() will still only go over with
node id 0.

If node 0 doesn't have RAM installed, the lowest populated node
becomes low RAM.

This one fixes BOOTMEM path by iterating over the bdata_list.

-v3: add more comments, and fix bootmem path too.
-v4: seperate from one big patch

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4BB416D7.6090203@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
14 years agonobootmem, x86: Fix 32bit numa system without RAM on node 0
Yinghai Lu [Thu, 1 Apr 2010 03:44:09 +0000 (20:44 -0700)]
nobootmem, x86: Fix 32bit numa system without RAM on node 0

On one system without RAM on node0, got following boot dump with a 32
bit NUMA kernel:

early_node_map[4] active PFN ranges
    1: 0x00000010 -> 0x00000099
    1: 0x00000100 -> 0x0007da00
    1: 0x0007e800 -> 0x0007ffa0
    1: 0x0007ffae -> 0x0007ffb0
...
Subtract (29 early reservations)
  #000 [0000001000 - 0000002000]
  #001 [0000089000 - 000008f000]
  #002 [0000091000 - 0000093500]
...
  #027 [007cbfef40 - 007e800000]
  #028 [007e9ca000 - 007ff95000]
(0 free memory ranges)
Initializing HighMem for node 0 (00000000:00000000)
Initializing HighMem for node 1 (00000000:00000000)
Memory: 0k/2096832k available (6662k kernel code, 2096300k reserved, 4829k data, 484k init, 0k highmem)
...
Checking if this processor honours the WP bit even in supervisor mode...Ok.
swapper: page allocation failure. order:0, mode:0x0
Pid: 0, comm: swapper Not tainted 2.6.34-rc3-tip-03818-g4b1ea6c-dirty #35
Call Trace:
 [<4087a5dc>] ? printk+0xf/0x11
 [<40286728>] __alloc_pages_nodemask+0x417/0x487
 [<402a9ce1>] new_slab+0xe2/0x1fe
 [<402aa5b2>] kmem_cache_open+0x185/0x358
 [<402abbc0>] T.954+0x1c/0x60
 [<40d52a29>] kmem_cache_init+0x24/0x113
 [<40d39738>] start_kernel+0x166/0x2e4
 [<40d3940e>] ? unknown_bootoption+0x0/0x18e
 [<40d390ce>] i386_start_kernel+0xce/0xd5
Mem-Info:
Node 1 DMA per-cpu:
CPU    0: hi:    0, btch:   1 usd:   0
Node 1 Normal per-cpu:
CPU    0: hi:    0, btch:   1 usd:   0
active_anon:0 inactive_anon:0 isolated_anon:0
 active_file:0 inactive_file:0 isolated_file:0
 unevictable:0 dirty:0 writeback:0 unstable:0
 free:0 slab_reclaimable:0 slab_unreclaimable:0
 mapped:0 shmem:0 pagetables:0 bounce:0

When 32bit NUMA is used, free_all_bootmem() will still only go over with
node id 0.

If node 0 doesn't have RAM installed, We need to go with node1
because early_node_map still use 1 for all ranges, and ram from node1
become low ram.

Use MAX_NUMNODES like 64-bit NUMA does.

Note: BOOTMEM path has the same problem.
      this bug exist before We have NO_BOOTMEM support.

-v3: add more comments, and fix bootmem path too.
-v4: seperate bootmem path fix

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4BB41689.9090502@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
14 years agox86: Handle overlapping mptables
Andi Kleen [Mon, 29 Mar 2010 07:41:11 +0000 (09:41 +0200)]
x86: Handle overlapping mptables

We found a system where the MP table MPC and MPF structures overlap.

That doesn't really matter because the mptable is not used anyways with ACPI,
but it leads to a panic in the early allocator due to the overlapping
reservations in 2.6.33.

Earlier kernels handled this without problems.

Simply change these reservations to reserve_early_overlap_ok to avoid
the panic.

Reported-by: Thomas Renninger <trenn@suse.de>
Tested-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
LKML-Reference: <20100329074111.GA22821@basil.fritz.box>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org>
14 years agox86: Make e820_remove_range to handle all covered case
Yinghai Lu [Tue, 30 Mar 2010 05:38:29 +0000 (22:38 -0700)]
x86: Make e820_remove_range to handle all covered case

Rusty found on lguest with trim_bios_range, max_pfn is not right anymore, and
looks e820_remove_range does not work right.

[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  LGUEST: 0000000000000000 - 0000000004000000 (usable)
[    0.000000] Notice: NX (Execute Disable) protection missing in CPU or disabled in BIOS!
[    0.000000] DMI not present or invalid.
[    0.000000] last_pfn = 0x3fa0 max_arch_pfn = 0x100000
[    0.000000] init_memory_mapping: 0000000000000000-0000000003fa0000

root cause is: the e820_remove_range doesn't handle the all covered
case.  e820_remove_range(BIOS_START, BIOS_END - BIOS_START, ...)
produces a bogus range as a result.

Make it match e820_update_range() by handling that case too.

Reported-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Tested-by: Rusty Russell <rusty@rustcorp.com.au>
LKML-Reference: <4BB18E55.6090903@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
14 years agox86-32, resume: do a global tlb flush in S4 resume
Shaohua Li [Fri, 5 Mar 2010 00:59:32 +0000 (08:59 +0800)]
x86-32, resume: do a global tlb flush in S4 resume

Colin King reported a strange oops in S4 resume code path (see below). The test
system has i5/i7 CPU. The kernel doesn't open PAE, so 4M page table is used.
The oops always happen a virtual address 0xc03ff000, which is mapped to the
last 4k of first 4M memory. Doing a global tlb flush fixes the issue.

EIP: 0060:[<c0493a01>] EFLAGS: 00010086 CPU: 0
EIP is at copy_loop+0xe/0x15
EAX: 36aeb000 EBX: 00000000 ECX: 00000400 EDX: f55ad46c
ESI: 0f800000 EDI: c03ff000 EBP: f67fbec4 ESP: f67fbea8
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
...
...
CR2: 00000000c03ff000

Tested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
LKML-Reference: <20100305005932.GA22675@sli10-desk.sh.intel.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org>
14 years agox86: Do not free zero sized per cpu areas
Ian Campbell [Mon, 29 Mar 2010 02:42:56 +0000 (19:42 -0700)]
x86: Do not free zero sized per cpu areas

This avoids an infinite loop in free_early_partial().

Add a warning to free_early_partial() to catch future problems.

-v5: put back start > end back into WARN_ONCE()
-v6: use one line for warning, suggested by Linus
-v7: more tests
-v8: remove the function name as suggested by Johannes
     WARN_ONCE() will print out that function name.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Joel Becker <joel.becker@oracle.com>
Tested-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1269830604-26214-4-git-send-email-yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86: Make sure free_init_pages() frees pages on page boundary
Yinghai Lu [Mon, 29 Mar 2010 02:42:55 +0000 (19:42 -0700)]
x86: Make sure free_init_pages() frees pages on page boundary

When CONFIG_NO_BOOTMEM=y, it could use memory more effiently, or
in a more compact fashion.

Example:

 Allocated new RAMDISK: 00ec2000 - 0248ce57
 Move RAMDISK from 000000002ea04000 - 000000002ffcee56 to 00ec2000 - 0248ce56

The new RAMDISK's end is not page aligned.
Last page could be shared with other users.

When free_init_pages are called for initrd or .init, the page
could be freed and we could corrupt other data.

code segment in free_init_pages():

 |        for (; addr < end; addr += PAGE_SIZE) {
 |                ClearPageReserved(virt_to_page(addr));
 |                init_page_count(virt_to_page(addr));
 |                memset((void *)(addr & ~(PAGE_SIZE-1)),
 |                        POISON_FREE_INITMEM, PAGE_SIZE);
 |                free_page(addr);
 |                totalram_pages++;
 |        }

last half page could be used as one whole free page.

So page align the boundaries.

-v2: make the original initramdisk to be aligned, according to
     Johannes, otherwise we have the chance to lose one page.
     we still need to keep initrd_end not aligned, otherwise it could
     confuse decompressor.
-v3: change to WARN_ON instead, suggested by Johannes.
-v4: use PAGE_ALIGN, suggested by Johannes.
     We may fix that macro name later to PAGE_ALIGN_UP, and PAGE_ALIGN_DOWN
     Add comments about assuming ramdisk start is aligned
     in relocate_initrd(), change to re get ramdisk_image instead of save it
     to make diff smaller. Add warning for wrong range, suggested by Johannes.
-v6: remove one WARN()
     We need to align beginning in free_init_pages()
     do not copy more than ramdisk_size, noticed by Johannes

Reported-by: Stanislaw Gruszka <sgruszka@redhat.com>
Tested-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1269830604-26214-3-git-send-email-yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agox86: Make smp_locks end with page alignment
Yinghai Lu [Mon, 29 Mar 2010 02:42:54 +0000 (19:42 -0700)]
x86: Make smp_locks end with page alignment

Fix:

 ------------[ cut here ]------------
 WARNING: at arch/x86/mm/init.c:342 free_init_pages+0x4c/0xfa()
 free_init_pages: range [0x40daf000, 0x40db5c24] is not aligned
 Modules linked in:
 Pid: 0, comm: swapper Not tainted
 2.6.34-rc2-tip-03946-g4f16b23-dirty #50 Call Trace:
  [<40232e9f>] warn_slowpath_common+0x65/0x7c
  [<4021c9f0>] ? free_init_pages+0x4c/0xfa
  [<40881434>] ? _etext+0x0/0x24
  [<40232eea>] warn_slowpath_fmt+0x24/0x27
  [<4021c9f0>] free_init_pages+0x4c/0xfa
  [<40881434>] ? _etext+0x0/0x24
  [<40d3f4bd>] alternative_instructions+0xf6/0x100
  [<40d3fe4f>] check_bugs+0xbd/0xbf
  [<40d398a7>] start_kernel+0x2d5/0x2e4
  [<40d390ce>] i386_start_kernel+0xce/0xd5
 ---[ end trace 4eaa2a86a8e2da22 ]---

Comments in vmlinux.lds.S already said:

 |        /*
 |         * smp_locks might be freed after init
 |         * start/end must be page aligned
 |         */

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1269830604-26214-2-git-send-email-yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Fri, 26 Mar 2010 23:34:29 +0000 (16:34 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  x86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1
  x86/PCI: for host bridge address space collisions, show conflicting resource
  frv/PCI: remove redundant warnings
  x86/PCI: remove redundant warnings
  PCI: don't say we claimed a resource if we failed
  PCI quirk: Disable MSI on VIA K8T890 systems
  PCI quirk: RS780/RS880: work around missing MSI initialization
  PCI quirk: only apply CX700 PCI bus parking quirk if external VT6212L is present
  PCI: complain about devices that seem to be broken
  PCI: print resources consistently with %pR
  PCI: make disabled window printk style match the enabled ones
  PCI: break out primary/secondary/subordinate for readability
  PCI: for address space collisions, show conflicting resource
  resources: add interfaces that return conflict information
  PCI: cleanup error return for pcix get and set mmrbc functions
  PCI: fix access of PCI_X_CMD by pcix get and set mmrbc functions
  PCI: kill off pci_register_set_vga_state() symbol export.
  PCI: fix return value from pcix_get_max_mmrbc()

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke...
Linus Torvalds [Fri, 26 Mar 2010 22:14:29 +0000 (15:14 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix imperfect completion wait in nilfs_wait_on_logs
  nilfs2: fix hang-up of cleaner after log writer returned with error
  nilfs2: fix duplicate call to nilfs_segctor_cancel_freev

14 years agoMerge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
Linus Torvalds [Fri, 26 Mar 2010 22:11:20 +0000 (15:11 -0700)]
Merge branch 'urgent' of git://git./linux/kernel/git/brodo/pcmcia-2.6

* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: use dev_pm_ops for class pcmcia_socket_class
  power: support _noirq actions on device types and classes
  pcmcia: allow for four multifunction subdevices (again)
  pcmcia: do not use ioports < 0x100 on x86
  pd6729: Coding Style fixes

14 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 26 Mar 2010 22:10:56 +0000 (15:10 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, amd: Restrict usage of c1e_idle()
  x86: Fix placement of FIX_OHCI1394_BASE
  x86: Handle legacy PIC interrupts on all the cpu's

14 years agoMerge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Mar 2010 22:10:38 +0000 (15:10 -0700)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  time: Fix accumulation bug triggered by long delay.
  posix-cpu-timers: Reset expire cache when no timer is running
  timer stats: Fix del_timer_sync() and try_to_del_timer_sync()
  clockevents: Sanitize min_delta_ns adjustment and prevent overflows

14 years agoMerge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Mar 2010 22:10:13 +0000 (15:10 -0700)]
Merge branch 'tracing-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  ring-buffer: Do 8 byte alignment for 64 bit that can not handle 4 byte align

14 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Mar 2010 22:09:59 +0000 (15:09 -0700)]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Use proper type in sched_getaffinity()
  kernel/sched.c: Suppress unused var warning
  sched: sched_getaffinity(): Allow less than NR_CPUS length

14 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Mar 2010 22:09:33 +0000 (15:09 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  powerpc/perf_events: Fix call-graph recording, add perf_arch_fetch_caller_regs
  perf top: Add missing initialization to zero
  perf probe: Use original address instead of CU-based address
  perf probe: Fix offset to allow signed value
  perf top: Improve the autosizing of column lenghts
  perf probe: Fix need_dwarf flag if lazy matching is used
  perf probe: Fix probe_point buffer overrun

14 years agoMerge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 26 Mar 2010 22:09:06 +0000 (15:09 -0700)]
Merge branch 'irq-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Move two IRQ functions from .init.text to .text
  genirq: Protect access to irq_desc->action in can_request_irq()
  genirq: Prevent oneshot irq thread race

14 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Mar 2010 22:08:31 +0000 (15:08 -0700)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Remove excessive early_res debug output
  softlockup: Stop spurious softlockup messages due to overflow
  rcu: Fix local_irq_disable() CONFIG_PROVE_RCU=y false positives
  rcu: Fix tracepoints & lockdep false positive
  rcu: Make rcu_read_lock_bh_held() allow for disabled BH

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Fri, 26 Mar 2010 22:07:46 +0000 (15:07 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: core: align driver match with modalias
  firewire: core: fix Model_ID in modalias
  firewire: ohci: add cycle timer quirk for the TI TSB12LV22
  firewire: core: fw_iso_resource_manage: fix error handling

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
Linus Torvalds [Fri, 26 Mar 2010 22:06:02 +0000 (15:06 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  Restore LOOKUP_DIRECTORY hint handling in final lookup on open()

14 years agoRestore LOOKUP_DIRECTORY hint handling in final lookup on open()
Al Viro [Fri, 26 Mar 2010 16:40:13 +0000 (12:40 -0400)]
Restore LOOKUP_DIRECTORY hint handling in final lookup on open()

Lose want_dir argument, while we are at it - since now
nd->flags & LOOKUP_DIRECTORY is equivalent to it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
14 years agoNOMMU: Fix __get_user_pages() to pin last page on offset buffers
David Howells [Thu, 25 Mar 2010 16:48:44 +0000 (16:48 +0000)]
NOMMU: Fix __get_user_pages() to pin last page on offset buffers

Fix __get_user_pages() to make it pin the last page on a buffer that doesn't
begin at the start of a page, but is a multiple of PAGE_SIZE in size.

The problem is that __get_user_pages() advances the pointer too much when it
iterates to the next page if the page it's currently looking at isn't used from
the first byte.  This can cause the end of a short VMA to be reached
prematurely, resulting in the last page being lost.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoNOMMU: Revert 'nommu: get_user_pages(): pin last page on non-page-aligned start'
David Howells [Thu, 25 Mar 2010 16:48:38 +0000 (16:48 +0000)]
NOMMU: Revert 'nommu: get_user_pages(): pin last page on non-page-aligned start'

Revert the following patch:

commit c08c6e1f54c85fc299cf9f88cf330d6dd28a9a1d
Author: Steven J. Magnani <steve@digidescorp.com>
Date:   Fri Mar 5 13:42:24 2010 -0800

nommu: get_user_pages(): pin last page on non-page-aligned start

As it assumes that the mappings begin at the start of pages - something that
isn't necessarily true on NOMMU systems.  On NOMMU systems, it is possible for
a mapping to only occupy part of the page, and not necessarily touch either end
of it; in fact it's also possible for multiple non-overlapping mappings to
coexist on one page (consider direct mappings of ROMFS files, for example).

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Thu, 25 Mar 2010 21:10:53 +0000 (14:10 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: Fixed inode allocator to correctly track a flex_bg's used_dirs
  ext4: Don't use delayed allocation by default when used instead of ext3
  ext4: Fix spelling of CONTIG_FS_EXT3 to CONFIG_FS_EXT3
  ext4: Fix estimate of # of blocks needed to write indirect-mapped files

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Thu, 25 Mar 2010 21:06:29 +0000 (14:06 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (25 commits)
  TIPC: Removed inactive maintainer
  isdn: Cleanup Sections in PCMCIA driver elsa
  isdn: Cleanup Sections in PCMCIA driver avma1
  isdn: Cleanup Sections in PCMCIA driver teles
  isdn: Cleanup Sections in PCMCIA driver sedlbauer
  via-velocity: Fix FLOW_CNTL_TX_RX handling in set_mii_flow_control()
  netfilter: xt_hashlimit: IPV6 bugfix
  netfilter: ip6table_raw: fix table priority
  netfilter: xt_hashlimit: dl_seq_stop() fix
  af_key: return error if pfkey_xfrm_policy2msg_prep() fails
  skbuff: remove unused dma_head & dma_maps fields
  vlan: updates vlan real_num_tx_queues
  vlan: adds vlan_dev_select_queue
  igb: only use vlan_gro_receive if vlans are registered
  igb: do not modify tx_queue_len on link speed change
  igb: count Rx FIFO errors correctly
  bnx2: Use proper handler during netpoll.
  bnx2: Fix netpoll crash.
  ksz884x: fix return value of netdev_set_eeprom
  cgroups: net_cls as module
  ...

14 years agoTIPC: Removed inactive maintainer
Jon Maloy [Thu, 25 Mar 2010 19:40:09 +0000 (12:40 -0700)]
TIPC: Removed inactive maintainer

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoisdn: Cleanup Sections in PCMCIA driver elsa
Henne [Thu, 25 Mar 2010 12:05:32 +0000 (12:05 +0000)]
isdn: Cleanup Sections in PCMCIA driver elsa

Compiling this driver gave a section mismatch,
so I reviewed the init/exit paths of the driver
and made the correct changes.

WARNING: drivers/isdn/hisax/built-in.o(.text+0x55e37): Section mismatch
in reference from the function elsa_cs_config() to the function
.devinit.text:hisax_init_pcmcia()
The function elsa_cs_config() references
the function __devinit hisax_init_pcmcia().
This is often because elsa_cs_config lacks a __devinit
annotation or the annotation of hisax_init_pcmcia is wrong.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoisdn: Cleanup Sections in PCMCIA driver avma1
Henne [Thu, 25 Mar 2010 12:05:31 +0000 (12:05 +0000)]
isdn: Cleanup Sections in PCMCIA driver avma1

Compiling this driver gave a section mismatch,
so I reviewed the init/exit paths of the driver
and made the correct changes.

WARNING: drivers/isdn/hisax/built-in.o(.text+0x56512): Section mismatch
in reference from the function avma1cs_config() to the function
.devinit.text:hisax_init_pcmcia()
The function avma1cs_config() references
the function __devinit hisax_init_pcmcia().
This is often because avma1cs_config lacks a __devinit
annotation or the annotation of hisax_init_pcmcia is wrong.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoisdn: Cleanup Sections in PCMCIA driver teles
Henne [Thu, 25 Mar 2010 12:05:30 +0000 (12:05 +0000)]
isdn: Cleanup Sections in PCMCIA driver teles

Compiling this driver gave a section mismatch,
so I reviewed the init/exit paths of the driver
and made the correct changes.

WARNING: drivers/isdn/hisax/built-in.o(.text+0x56bfb): Section mismatch
in reference from the function teles_cs_config() to the function
.devinit.text:hisax_init_pcmcia()
The function teles_cs_config() references
the function __devinit hisax_init_pcmcia().
This is often because teles_cs_config lacks a __devinit
annotation or the annotation of hisax_init_pcmcia is wrong.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoisdn: Cleanup Sections in PCMCIA driver sedlbauer
Henne [Thu, 25 Mar 2010 12:05:29 +0000 (12:05 +0000)]
isdn: Cleanup Sections in PCMCIA driver sedlbauer

Compiling this driver gave a section mismatch,
so I reviewed the init/exit paths of the driver
and made the correct changes.

WARNING: drivers/isdn/hisax/built-in.o(.text+0x558d6): Section mismatch
in reference from the function sedlbauer_config() to the function
.devinit.text:hisax_init_pcmcia()
The function sedlbauer_config() references
the function __devinit hisax_init_pcmcia().
This is often because sedlbauer_config lacks a __devinit
annotation or the annotation of hisax_init_pcmcia is wrong.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Acked-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agovia-velocity: Fix FLOW_CNTL_TX_RX handling in set_mii_flow_control()
David S. Miller [Tue, 23 Mar 2010 02:59:47 +0000 (19:59 -0700)]
via-velocity: Fix FLOW_CNTL_TX_RX handling in set_mii_flow_control()

Clear, don't set, ANAR_ASMDIR in this case.

Noticed by Roel Kluin.

Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
David S. Miller [Thu, 25 Mar 2010 18:48:58 +0000 (11:48 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/kaber/nf-2.6

14 years agox86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1
Bjorn Helgaas [Thu, 25 Mar 2010 15:28:30 +0000 (09:28 -0600)]
x86/PCI: truncate _CRS windows with _LEN > _MAX - _MIN + 1

Yanko's GA-MA78GM-S2H (BIOS F11) reports the following resource in a PCI
host bridge _CRS:

    [07] 32-Bit DWORD Address Space Resource
         Min Relocatability : MinFixed
         Max Relocatability : MaxFixed
            Address Minimum : CFF00000  (_MIN)
            Address Maximum : FEBFFFFF  (_MAX)
             Address Length : 3EE10000  (_LEN)

This is invalid per spec (ACPI 4.0, 6.4.3.5) because it's a fixed size,
fixed location descriptor, but _LEN != _MAX - _MIN + 1.

Based on https://bugzilla.kernel.org/show_bug.cgi?id=15480#c15, I think
Windows handles this by truncating the window so it fits between _MIN and
_MAX.  I also verified this by modifying the SeaBIOS DSDT and booting
Windows 2008 R2 with qemu.

This patch makes Linux truncate the window, too, which fixes:
    http://bugzilla.kernel.org/show_bug.cgi?id=15480

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Tested-by: Yanko Kaneti <yaneti@declera.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agox86/PCI: for host bridge address space collisions, show conflicting resource
Bjorn Helgaas [Thu, 25 Mar 2010 15:28:24 +0000 (09:28 -0600)]
x86/PCI: for host bridge address space collisions, show conflicting resource

With insert_resource_conflict(), we can learn what the actual conflict is,
so print that info for debugging purposes.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agonetfilter: xt_hashlimit: IPV6 bugfix
Eric Dumazet [Thu, 25 Mar 2010 16:25:11 +0000 (17:25 +0100)]
netfilter: xt_hashlimit: IPV6 bugfix

A missing break statement in hashlimit_ipv6_mask(), and masks
between /64 and /95 are not working at all...

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
14 years agofrv/PCI: remove redundant warnings
Bjorn Helgaas [Mon, 22 Mar 2010 22:34:15 +0000 (16:34 -0600)]
frv/PCI: remove redundant warnings

pci_claim_resource() already prints more detailed error messages, so these
are really redundant.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agox86/PCI: remove redundant warnings
Bjorn Helgaas [Mon, 22 Mar 2010 22:34:10 +0000 (16:34 -0600)]
x86/PCI: remove redundant warnings

pci_claim_resource() already prints more detailed error messages, so these
are really redundant.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: don't say we claimed a resource if we failed
Bjorn Helgaas [Mon, 22 Mar 2010 22:34:05 +0000 (16:34 -0600)]
PCI: don't say we claimed a resource if we failed

pci_claim_resource() can fail, so pay attention and only claim success
when it actually succeeded.  If pci_claim_resource() fails, it prints a
useful diagnostic.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI quirk: Disable MSI on VIA K8T890 systems
Matthew Wilcox [Wed, 24 Mar 2010 13:11:01 +0000 (07:11 -0600)]
PCI quirk: Disable MSI on VIA K8T890 systems

Bugzilla 15287 indicates that there's a problem with Message Signalled
Interrupts on VIA K8T890 systems.  Add a quirk to disable MSI on these
systems.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Tested-by: Jan Kreuzer <kontrollator@gmx.de>
Tested-by: lh <jarryson@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agonetfilter: ip6table_raw: fix table priority
Jozsef Kadlecsik [Thu, 25 Mar 2010 10:17:26 +0000 (11:17 +0100)]
netfilter: ip6table_raw: fix table priority

The order of the IPv6 raw table is currently reversed, that makes impossible
to use the NOTRACK target in IPv6: for example if someone enters

ip6tables -t raw -A PREROUTING -p tcp --dport 80 -j NOTRACK

and if we receive fragmented packets then the first fragment will be
untracked and thus skip nf_ct_frag6_gather (and conntrack), while all
subsequent fragments enter nf_ct_frag6_gather and reassembly will never
successfully be finished.

Singed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
14 years agonetfilter: xt_hashlimit: dl_seq_stop() fix
Eric Dumazet [Thu, 25 Mar 2010 10:00:22 +0000 (11:00 +0100)]
netfilter: xt_hashlimit: dl_seq_stop() fix

If dl_seq_start() memory allocation fails, we crash later in
dl_seq_stop(), trying to kfree(ERR_PTR(-ENOMEM))

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
14 years agoMerge branch 'for-linus' of git://gitorious.org/linux-omap-dss2/linux
Linus Torvalds [Wed, 24 Mar 2010 23:52:15 +0000 (16:52 -0700)]
Merge branch 'for-linus' of git://gitorious.org/linux-omap-dss2/linux

* 'for-linus' of git://gitorious.org/linux-omap-dss2/linux:
  OMAP: DSS2: panel-generic: re-implement mode changing
  OMAP: DSS2: initialize dss clk sources properly
  OMAP: DSS2: VRAM: Fix early_param for vram

14 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Wed, 24 Mar 2010 23:51:14 +0000 (16:51 -0700)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Orion5x: replace KEY_WLAN with KEY_WPS_BUTTON
  [ARM] Kirkwood: WPS button keycode mapping
  pxa168fb: fix incorrect resource calculation
  [ARM] pxa/raumfeld: fix button name
  [ARM] pxa/raumfeld: remove duplicated #include
  [ARM] locomo: fix unpaired spin_lock_irqsave
  [ARM] locomo: fix SPI register offset
  [ARM] pxa/sharpsl: add dependency of max1111 driver to sharpsl_pm
  [ARM] pxa: remove unnecessary 'select FB_W100' from some platforms
  [ARM] pxa: remove spi cs gpio direction to avoid clash with driver
  [ARM] mmp: fix for variables in uncompress.h being discarded
  [ARM] pxa: fix for variables in uncompress.h being discarded
  ARM: Update mach-types
  ARM: Fix IXP23xx build error in mach/memory.h

14 years agoMerge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
Linus Torvalds [Wed, 24 Mar 2010 23:50:46 +0000 (16:50 -0700)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: don't try to decode GETATTR if DELEGRETURN returned error
  sunrpc: handle allocation errors from __rpc_lookup_create()
  SUNRPC: Fix the return value of rpc_run_bc_task()
  SUNRPC: Fix a use after free bug with the NFSv4.1 backchannel
  SUNRPC: Fix a potential memory leak in auth_gss
  NFS: Prevent another deadlock in nfs_release_page()

14 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Wed, 24 Mar 2010 23:50:27 +0000 (16:50 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata-sff: fix spurious IRQ handling
  pata_via: Add VIA VX900 support

14 years agoMerge branch 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Wed, 24 Mar 2010 23:49:38 +0000 (16:49 -0700)]
Merge branch 'sh/for-2.6.34' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Silence unintialized variable warnings in dwarf unwinder.
  sh: Tidy up a couple of section mismatches.
  sh: Fix build after dynamic PMB rework
  sh: Replace unsafe manipulation of MMUCR
  sh: Flush ITLB too in PTEAEX's flush_tlb_page()
  sh64: Remove long unused mid_sched macro
  SH: remove superfluous warning from the serial driver
  SH: fix SCIFA SCASCR register bit definitions
  serial: sh-sci: fix SH-Mobile SH breakage
  sh: Add watch-dog register address for SH7722/SH7723/SH7724
  sh: ms7724: Add tiny-document for sound
  sh: mach-ecovec24: Add i2c_put_adapter on sh_eth_init

14 years agofscache: add missing unlock
Dan Carpenter [Tue, 23 Mar 2010 14:48:37 +0000 (14:48 +0000)]
fscache: add missing unlock

Sparse complained about this missing spin_unlock()

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
Linus Torvalds [Wed, 24 Mar 2010 23:48:11 +0000 (16:48 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/lrg/voltage-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  regulator: fix dangling pointers
  lp3971: Fix BUCK_VOL_CHANGE_SHIFT logic
  lp3971: Fix setting val for LDO2 and LDO4
  regulator: Get rid of lockdep warning
  regulator: handle kcalloc() failure
  Regulators: max8925-regulator - clean up driver data after removal

14 years agodo_sync_read/write() should set kiocb.ki_nbytes to be consistent
David Howells [Wed, 24 Mar 2010 17:09:19 +0000 (17:09 +0000)]
do_sync_read/write() should set kiocb.ki_nbytes to be consistent

do_sync_read/write() should set kiocb.ki_nbytes to be consistent with
do_sync_readv_writev().

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoFDPIC: For-loop in elf_core_vma_data_size() is incorrect
David Howells [Wed, 24 Mar 2010 17:02:28 +0000 (17:02 +0000)]
FDPIC: For-loop in elf_core_vma_data_size() is incorrect

Fix an incorrect for-loop in elf_core_vma_data_size().  The advance-pointer
statement lacks an assignment:

  CC      fs/binfmt_elf_fdpic.o
fs/binfmt_elf_fdpic.c: In function 'elf_core_vma_data_size':
fs/binfmt_elf_fdpic.c:1593: warning: statement with no effect

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt...
Linus Torvalds [Wed, 24 Mar 2010 23:42:43 +0000 (16:42 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/anholt/drm-intel

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel:
  drm/i915: Stop trying to use ACPI lid status to determine LVDS connection.
  drm/intel: fix up set_tiling for untiled->tiled transition
  drm/i915: Set up the documented clock gating on Sandybridge and Ironlake.
  agp/intel: Don't do the chipset flush on Sandybridge.
  agp/intel: Respect the GTT size on Sandybridge for scratch page setup.
  drm/i915: fix small leak on overlay error path
  drm/i915: Avoid NULL deref in get_pages() unwind after error.
  drm/i915: Fix check with IS_GEN6
  drivers/gpu/drm/i915/intel_bios.c: fix continuation line formats
  drm/i915: Enable VS timer dispatch.
  drm/i915: Rename FBC_C3_IDLE to FBC_CTL_C3_IDLE to match other registers
  drm/i915: remove an unnecessary wait_request()
  drm/i915: Don't bother with the BKL for GEM ioctls.

14 years agoMerge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
Linus Torvalds [Wed, 24 Mar 2010 23:41:48 +0000 (16:41 -0700)]
Merge branch 'i2c-for-linus' of git://git./linux/kernel/git/jdelvare/staging

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c-scmi: Provide module aliases for automatic loading
  i2c-scmi: Support IBM SMBus CMI devices
  acpi: Support IBM SMBus CMI devices

14 years agoMerge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Wed, 24 Mar 2010 23:36:53 +0000 (16:36 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] fix boot failures with compressed kernels
  [S390] fix broken proc interface for sclp_async
  [S390] sclp: avoid 64 bit division
  [S390] dasd: check tsb validity
  [S390] dasd: fix alignment of transport mode recovery TCW
  [S390] system.h: Fix compile error for 1 and 2 byte cmpxchg
  [S390] smp: fix lowcore allocation
  [S390] zcore: CPU registers are not saved under LPAR

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Wed, 24 Mar 2010 23:34:33 +0000 (16:34 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: cmipci: work around invalid PCM pointer
  ASoC: Remove BROKEN from i.MX audio after dependencies merged
  ALSA: hda - Fix access-after-free in patch_realtek.c
  ALSA: hda - Sort codec entry list of Nvidia HDMI
  ALSA: hda - Add support of Nvidia GT220 HDMI
  ALSA: hda: Fix 0 dB offset for HP laptops using CX20551 (Waikiki)
  ALSA: hda - Add PCI quirk for HP dv6-1110ax.
  sound/oss/vidc.c: change the field used with DMA_ACTIVE
  ASoC: pxa-pcm-lib: initialize DMA channel to -1
  ASoC: Bail out of wm_hubs DC servo if calibration fails
  ASoC: tlv320dac33: Internal clocking changes
  ASoC: tlv320dac33: Fix DSP modes
  ASoC: SIU driver shall select FW_LOADER

14 years agoDocument Linux's circular buffering capabilities
David Howells [Wed, 24 Mar 2010 09:43:00 +0000 (09:43 +0000)]
Document Linux's circular buffering capabilities

Document the circular buffering capabilities available in Linux.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Randy Dunlap <rdunlap@xenotime.net>
Reviewed-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agofs/partition/msdos: fix unusable extended partition for > 512B sector
OGAWA Hirofumi [Tue, 23 Mar 2010 20:35:50 +0000 (13:35 -0700)]
fs/partition/msdos: fix unusable extended partition for > 512B sector

Smaller size than a minimum blocksize can't be used, after all it's
handled like 0 size.

For extended partition itself, this makes sure to use bigger size than one
logical sector size at least.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Daniel Taylor <Daniel.Taylor@wdc.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agofs/partitions/msdos: add support for large disks
Daniel Taylor [Tue, 23 Mar 2010 20:35:50 +0000 (13:35 -0700)]
fs/partitions/msdos: add support for large disks

In order to use disks larger than 2TiB on Windows XP, it is necessary to
use 4096-byte logical sectors in an MBR.

Although the kernel storage and functions called from msdos.c used
"sector_t" internally, msdos.c still used u32 variables, which results in
the ability to handle XP-compatible large disks.

This patch changes the internal variables to "sector_t".

Daniel said: "In the near future, WD will be releasing products that need
this patch".

[hirofumi@mail.parknet.co.jp: tweaks and fix]
Signed-off-by: Daniel Taylor <daniel.taylor@wdc.com>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agolxfb: set the H- and V-SYNC polarity of the flatpanel output
Michael Grzeschik [Tue, 23 Mar 2010 20:35:49 +0000 (13:35 -0700)]
lxfb: set the H- and V-SYNC polarity of the flatpanel output

Fixup for the flatpanel output.  The geode_modedb attribute flags are used
to set the SYNC polarity of the flatpanel.  Without this patch our
flatpanel registers stayed unconfigured, so we just saw garbage output.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Cc: Andres Salomon <dilinger@collabora.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokcore: fix test for end of list
Dan Carpenter [Tue, 23 Mar 2010 20:35:42 +0000 (13:35 -0700)]
kcore: fix test for end of list

"m" is never NULL here.  We need a different test for the end of list
condition.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomempolicy: fix get_mempolicy() for relative and static nodes
Lee Schermerhorn [Tue, 23 Mar 2010 20:35:41 +0000 (13:35 -0700)]
mempolicy: fix get_mempolicy() for relative and static nodes

Discovered while testing other mempolicy changes:

get_mempolicy() does not handle static/relative mode flags correctly.
Return the value that the user specified so that it can be restored
via set_mempolicy() if desired.

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agommc: fix incorrect interpretation of card type bits
Adrian Hunter [Tue, 23 Mar 2010 20:35:40 +0000 (13:35 -0700)]
mmc: fix incorrect interpretation of card type bits

In the extended CSD register the CARD_TYPE is an 8-bit value of which the
upper 6 bits were reserved in JEDEC specifications prior to version 4.4.
In version 4.4 two of the reserved bits were designated for identifying
support for the newly added High-Speed Dual Data Rate.  Unfortunately the
mmc_read_ext_csd() function required that the reserved bits be zero
instead of ignoring them as it should.

This patch makes mmc_read_ext_csd() ignore the CARD_TYPE bits that are
reserved or not yet supported.  It also stops the function jumping to the
end as though an error occurred, when it is only warns that the CARD_TYPE
bits (that it does interpret) are invalid.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoreiserfs: properly honor read-only devices
Jeff Mahoney [Tue, 23 Mar 2010 20:35:39 +0000 (13:35 -0700)]
reiserfs: properly honor read-only devices

The reiserfs journal behaves inconsistently when determining whether to
allow a mount of a read-only device.

This is due to the use of the continue_replay variable to short circuit
the journal scanning.  If it's set, it's assumed that there are
transactions to replay, but there may not be.  If it's unset, it's assumed
that there aren't any, and that may not be the case either.

I've observed two failure cases:
1) Where a clean file system on a read-only device refuses to mount
2) Where a clean file system on a read-only device passes the
   optimization and then tries writing the journal header to update
   the latest mount id.

The former is easily observable by using a freshly created file system on
a read-only loopback device.

This patch moves the check into journal_read_transaction, where it can
bail out before it's about to replay a transaction.  That way it can go
through and skip transactions where appropriate, yet still refuse to mount
a file system with outstanding transactions.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoreiserfs: fix oops while creating privroot with selinux enabled
Jeff Mahoney [Tue, 23 Mar 2010 20:35:38 +0000 (13:35 -0700)]
reiserfs: fix oops while creating privroot with selinux enabled

Commit 57fe60df ("reiserfs: add atomic addition of selinux attributes
during inode creation") contains a bug that will cause it to oops when
mounting a file system that didn't previously contain extended attributes
on a system using security.* xattrs.

The issue is that while creating the privroot during mount
reiserfs_security_init calls reiserfs_xattr_jcreate_nblocks which
dereferences the xattr root.  The xattr root doesn't exist, so we get an
oops.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=15309

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoexit: fix oops in sync_mm_rss
Michael S. Tsirkin [Tue, 23 Mar 2010 20:35:37 +0000 (13:35 -0700)]
exit: fix oops in sync_mm_rss

In 2.6.34-rc1, removing vhost_net module causes an oops in sync_mm_rss
(called from do_exit) when workqueue is destroyed.  This does not happen
on net-next, or with vhost on top of to 2.6.33.

The issue seems to be introduced by
34e55232e59f7b19050267a05ff1226e5cd122a5 ("mm: avoid false sharing of
mm_counter) which added sync_mm_rss() that is passed task->mm, and
dereferences it without checking.  If task is a kernel thread, mm might be
NULL.  I think this might also happen e.g.  with aio.

This patch fixes the oops by calling sync_mm_rss when task->mm is set to
NULL.  I also added BUG_ON to detect any other cases where counters get
incremented while mm is NULL.

The oops I observed looks like this:

BUG: unable to handle kernel NULL pointer dereference at 00000000000002a8
IP: [<ffffffff810b436d>] sync_mm_rss+0x33/0x6f
PGD 0
Oops: 0002 [#1] SMP
last sysfs file: /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map
CPU 2
Modules linked in: vhost_net(-) tun bridge stp sunrpc ipv6 cpufreq_ondemand acpi_cpufreq freq_table kvm_intel kvm i5000_edac edac_core rtc_cmos bnx2 button i2c_i801 i2c_core rtc_core e1000e sg joydev ide_cd_mod serio_raw pcspkr rtc_lib cdrom virtio_net virtio_blk virtio_pci virtio_ring virtio af_packet e1000 shpchp aacraid uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode]

Pid: 2046, comm: vhost Not tainted 2.6.34-rc1-vhost #25 System Planar/IBM System x3550 -[7978B3G]-
RIP: 0010:[<ffffffff810b436d>]  [<ffffffff810b436d>] sync_mm_rss+0x33/0x6f
RSP: 0018:ffff8802379b7e60  EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff88023f2390c0 RCX: 0000000000000000
RDX: ffff88023f2396b0 RSI: 0000000000000000 RDI: ffff88023f2390c0
RBP: ffff8802379b7e60 R08: 0000000000000000 R09: 0000000000000000
R10: ffff88023aecfbc0 R11: 0000000000013240 R12: 0000000000000000
R13: ffffffff81051a6c R14: ffffe8ffffc0f540 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff880001e80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00000000000002a8 CR3: 000000023af23000 CR4: 00000000000406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process vhost (pid: 2046, threadinfo ffff8802379b6000, task ffff88023f2390c0)
Stack:
 ffff8802379b7ee0 ffffffff81040687 ffffe8ffffc0f558 ffffffffa00a3e2d
<0> 0000000000000000 ffff88023f2390c0 ffffffff81055817 ffff8802379b7e98
<0> ffff8802379b7e98 0000000100000286 ffff8802379b7ee0 ffff88023ad47d78
Call Trace:
 [<ffffffff81040687>] do_exit+0x147/0x6c4
 [<ffffffffa00a3e2d>] ? handle_rx_net+0x0/0x17 [vhost_net]
 [<ffffffff81055817>] ? autoremove_wake_function+0x0/0x39
 [<ffffffff81051a6c>] ? worker_thread+0x0/0x229
 [<ffffffff810553c9>] kthreadd+0x0/0xf2
 [<ffffffff810038d4>] kernel_thread_helper+0x4/0x10
 [<ffffffff81055342>] ? kthread+0x0/0x87
 [<ffffffff810038d0>] ? kernel_thread_helper+0x0/0x10
Code: 00 8b 87 6c 02 00 00 85 c0 74 14 48 98 f0 48 01 86 a0 02 00 00 c7 87 6c 02 00 00 00 00 00 00 8b 87 70 02 00 00 85 c0 74 14 48 98 <f0> 48 01 86 a8 02 00 00 c7 87 70 02 00 00 00 00 00 00 8b 87 74
RIP  [<ffffffff810b436d>] sync_mm_rss+0x33/0x6f
 RSP <ffff8802379b7e60>
CR2: 00000000000002a8
---[ end trace 41603ba922beddd2 ]---
Fixing recursive fault but reboot is needed!

(note: handle_rx_net is a work item using workqueue in question).
sync_mm_rss+0x33/0x6f gave me a hint. I also tried reverting
34e55232e59f7b19050267a05ff1226e5cd122a5 and the oops goes away.

The module in question calls use_mm and later unuse_mm from a kernel
thread.  It is when this kernel thread is destroyed that the crash
happens.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agocpuset: alloc nodemask_t on the heap rather than the stack
Miao Xie [Tue, 23 Mar 2010 20:35:35 +0000 (13:35 -0700)]
cpuset: alloc nodemask_t on the heap rather than the stack

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Paul Menage <menage@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agocpuset: fix the problem that cpuset_mem_spread_node() returns an offline node
Miao Xie [Tue, 23 Mar 2010 20:35:34 +0000 (13:35 -0700)]
cpuset: fix the problem that cpuset_mem_spread_node() returns an offline node

cpuset_mem_spread_node() returns an offline node, and causes an oops.

This patch fixes it by initializing task->mems_allowed to
node_states[N_HIGH_MEMORY], and updating task->mems_allowed when doing
memory hotplug.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Reported-by: Nick Piggin <npiggin@suse.de>
Tested-by: Nick Piggin <npiggin@suse.de>
Cc: Paul Menage <menage@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodoc: add the documentation for mpol=local
KOSAKI Motohiro [Tue, 23 Mar 2010 20:35:33 +0000 (13:35 -0700)]
doc: add the documentation for mpol=local

commit 3f226aa1c (mempolicy: support mpol=local tmpfs mount option) added
new mpol=local mount option.  but it didn't add a documentation.

This patch does it.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agotmpfs: cleanup mpol_parse_str()
KOSAKI Motohiro [Tue, 23 Mar 2010 20:35:32 +0000 (13:35 -0700)]
tmpfs: cleanup mpol_parse_str()

mpol_parse_str() made lots 'err' variable related bug.  Because it is ugly
and reviewing unfriendly.

This patch simplifies it.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agotmpfs: handle MPOL_LOCAL mount option properly
KOSAKI Motohiro [Tue, 23 Mar 2010 20:35:31 +0000 (13:35 -0700)]
tmpfs: handle MPOL_LOCAL mount option properly

commit 71fe804b6d5 (mempolicy: use struct mempolicy pointer in
shmem_sb_info) added mpol=local mount option.  but its feature is broken
since it was born.  because such code always return 1 (i.e.  mount
failure).

This patch fixes it.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agotmpfs: mpol=bind:0 don't cause mount error.
KOSAKI Motohiro [Tue, 23 Mar 2010 20:35:30 +0000 (13:35 -0700)]
tmpfs: mpol=bind:0 don't cause mount error.

Currently, following mount operation cause mount error.

% mount -t tmpfs -ompol=bind:0 none /tmp

Because commit 71fe804b6d5 (mempolicy: use struct mempolicy pointer in
shmem_sb_info) corrupted MPOL_BIND parse code.

This patch restore the needed one.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agotmpfs: fix oops on mounts with mpol=default
Ravikiran G Thirumalai [Tue, 23 Mar 2010 20:35:28 +0000 (13:35 -0700)]
tmpfs: fix oops on mounts with mpol=default

Fix an 'oops' when a tmpfs mount point is mounted with the mpol=default
mempolicy.

Upon remounting a tmpfs mount point with 'mpol=default' option, the mount
code crashed with a null pointer dereference.  The initial problem report
was on 2.6.27, but the problem exists in mainline 2.6.34-rc as well.  On
examining the code, we see that mpol_new returns NULL if default mempolicy
was requested.  This 'NULL' mempolicy is accessed to store the node mask
resulting in oops.

The following patch fixes it.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoc2port: fix device_create() return value check
Jani Nikula [Tue, 23 Mar 2010 20:35:27 +0000 (13:35 -0700)]
c2port: fix device_create() return value check

Use IS_ERR() instead of comparing to NULL.

[akpm@linux-foundation.org: preserve the error code]
Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomm/ksm.c is doing an unneeded _notify in write_protect_page.
Robin Holt [Tue, 23 Mar 2010 20:35:26 +0000 (13:35 -0700)]
mm/ksm.c is doing an unneeded _notify in write_protect_page.

ksm.c's write_protect_page implements a lockless means of verifying a page
does not have any users of the page which are not accounted for via other
kernel tracking means.  It does this by removing the writable pte with TLB
flushes, checking the page_count against the total known users, and then
using set_pte_at_notify to make it a read-only entry.

An unneeded mmu_notifier callout is made in the case where the known users
does not match the page_count.  In that event, we are inserting the
identical pte and there is no need for the set_pte_at_notify, but rather
the simpler set_pte_at suffices.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Izik Eidus <ieidus@redhat.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Chris Wright <chrisw@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoscripts/kernel-doc: fix fatal error on function prototype
Randy Dunlap [Tue, 23 Mar 2010 20:35:24 +0000 (13:35 -0700)]
scripts/kernel-doc: fix fatal error on function prototype

Fix a fatal error in scripts/kernel-doc when a function signature uses
__init_or_module (just ignore that string):

Error(drivers/base/platform.c:568): cannot understand prototype: 'struct platform_device * __init_or_module platform_create_bundle(struct platform_driver *driver, int (*probe)(struct platform_device *), struct resource *res, unsigned int n_res, const void *data, size_t size) '

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoDocumentation: rename PCI/PCI-DMA-mapping.txt to DMA-API-HOWTO.txt
FUJITA Tomonori [Tue, 23 Mar 2010 20:35:23 +0000 (13:35 -0700)]
Documentation: rename PCI/PCI-DMA-mapping.txt to DMA-API-HOWTO.txt

This patch renames PCI/PCI-DMA-mapping.txt to DMA-API-HOWTO.txt.

The commit 51e7364ef281e540371f084008732b13292622f0 "Documentation: rename
PCI-DMA-mapping.txt to DMA-API-HOWTO.txt" was supposed to do this but it
didn't.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokfifo: fix KFIFO_INIT in include/linux/kfifo.h
David Härdeman [Tue, 23 Mar 2010 20:35:22 +0000 (13:35 -0700)]
kfifo: fix KFIFO_INIT in include/linux/kfifo.h

include/linux/kfifo.h first defines and then undefines __kfifo_initializer
which is used by INIT_KFIFO (which is also a macro, so building a module
which uses INIT_KFIFO will fail).

Signed-off-by: David Härdeman <david@hardeman.nu>
Acked-by: Stefani Seibold <stefani@seibold.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agonommu: fix an incorrect comment in the do_mmap_shared_file()
David Howells [Tue, 23 Mar 2010 20:35:21 +0000 (13:35 -0700)]
nommu: fix an incorrect comment in the do_mmap_shared_file()

Fix an incorrect comment in the do_mmap_shared_file().  If a mapping is
requested MAP_SHARED, then a private copy cannot be made and still provide
correct semantics.

Signed-off-by: David Howells <dhowells@redhat.com>
Reported-by: Dave Hudson <uclinux@blueteddy.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMAINTAINERS: use tab not spaces for delimiter
Joe Perches [Tue, 23 Mar 2010 20:35:20 +0000 (13:35 -0700)]
MAINTAINERS: use tab not spaces for delimiter

Keeps MAINTAINERS a bit more consistent.
done via sed -r -i -e 's/^([A-Z]):[ \t]+/\1:\t/g' MAINTAINERS

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/gpio/max730x.c: add license macro
Richard Röjfors [Tue, 23 Mar 2010 20:35:20 +0000 (13:35 -0700)]
drivers/gpio/max730x.c: add license macro

According to the header in max730x it is licensed GPLv2.

Add a MODULE_LICENSE to avoid getting the kernel tainted.

[w.sang@pengutronix.de: add MODULE_AUTHOR and MODULE_DESCRIPTION also]
Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomemcg: fix typo in memcg documentation
Greg Thelen [Tue, 23 Mar 2010 20:35:19 +0000 (13:35 -0700)]
memcg: fix typo in memcg documentation

Update memory.txt to be more consistent: s/swapiness/swappiness/

Signed-off-by: Greg Thelen <gthelen@google.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoget_maintainer: repair STDIN usage
Wolfram Sang [Tue, 23 Mar 2010 20:35:18 +0000 (13:35 -0700)]
get_maintainer: repair STDIN usage

Commit 22dd5b0cba50a197aaa3bd2790a29ee2e8e4e372 (fix perlcritic warnings)
broke the ability to handle STDIN because the three argument version of
open() cannot handle standard IO-streams (which is mentioned in
PerlBestPractices, too).

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoblackfin: enable DEBUG_SECTION_MISMATCH
Mike Frysinger [Tue, 23 Mar 2010 20:35:17 +0000 (13:35 -0700)]
blackfin: enable DEBUG_SECTION_MISMATCH

We see only one section mismatch now after thousands of randconfigs, and a
bug has been filed about that one.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoDocumentation/volatile-considered-harmful.txt: correct cpu_relax() documentation
Russell King [Tue, 23 Mar 2010 20:35:16 +0000 (13:35 -0700)]
Documentation/volatile-considered-harmful.txt: correct cpu_relax() documentation

cpu_relax() is documented in volatile-considered-harmful.txt to be a
memory barrier.  However, everyone with the exception of Blackfin and
possibly ia64 defines cpu_relax() to be a compiler barrier.

Make the documentation reflect the general concensus.

Linus sayeth:

: I don't think it was ever the intention that it would be seen as anything
: but a compiler barrier, although it is obviously implied that it might
: well perform some per-architecture actions that have "memory barrier-like"
: semantics.
:
: After all, the whole and only point of the "cpu_relax()" thing is to tell
: the CPU that we're busy-looping on some event.
:
: And that "event" might be (and often is) about reading the same memory
: location over and over until it changes to what we want it to be.  So it's
: quite possible that on various architectures the "cpu_relax()" could be
: about making sure that such a tight loop on loads doesn't starve cache
: transactions, for example - and as such look a bit like a memory barrier
: from a CPU standpoint.
:
: But it's not meant to have any kind of architectural memory ordering
: semantics as far as the kernel is concerned - those must come from other
: sources.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: <linux-arch@vger.kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agofs/binfmt_aout.c: fix pointer warnings
Borislav Petkov [Tue, 23 Mar 2010 20:35:15 +0000 (13:35 -0700)]
fs/binfmt_aout.c: fix pointer warnings

fs/binfmt_aout.c: In function `aout_core_dump':
fs/binfmt_aout.c:125: warning: passing argument 2 of `dump_write' makes pointer from integer without a cast
include/linux/coredump.h:12: note: expected `const void *' but argument is of type `long unsigned int'
fs/binfmt_aout.c:132: warning: passing argument 2 of `dump_write' makes pointer from integer without a cast
include/linux/coredump.h:12: note: expected `const void *' but argument is of type `long unsigned int'

due to dump_write() expecting a user void *.  Fold casts into the
START_DATA/START_STACK macros and shut up the warnings.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Cc: Daisuke HATAYAMA <d.hatayama@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoscripts/kernel-doc: handle struct member __aligned
Randy Dunlap [Tue, 23 Mar 2010 20:35:14 +0000 (13:35 -0700)]
scripts/kernel-doc: handle struct member __aligned

scripts/kernel-doc erroneously says:

Warning(include/linux/skbuff.h:410): Excess struct/union/enum/typedef member 'cb' description in 'sk_buff'

on this line in struct sk_buff:
char cb[48] __aligned(8);

due to treating the last field as the struct member name, so teach
kernel-doc to ignore __aligned(x) in structs.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agortc/mc13783: fix use after free bug
Uwe Kleine-König [Tue, 23 Mar 2010 20:35:13 +0000 (13:35 -0700)]
rtc/mc13783: fix use after free bug

This was introduced by v2.6.34-rc1~38:

4c014e8 (rtc/mc13783: protect rtc {,un}registration by mc13783 lock)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomemcontrol: fix potential null deref
Dan Carpenter [Tue, 23 Mar 2010 20:35:12 +0000 (13:35 -0700)]
memcontrol: fix potential null deref

There was a potential null deref introduced in c62b1a3b31b5 ("memcg: use
generic percpu instead of private implementation").

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agocgroups: remove duplicate include
Li Zefan [Tue, 23 Mar 2010 20:35:12 +0000 (13:35 -0700)]
cgroups: remove duplicate include

commit e6a1105b ("cgroups: subsystem module loading interface") and commit
c50cc752 ("sched, cgroups: Fix module export") result in duplicate
including of module.h

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomemcg: disable move charge in no mmu case
Daisuke Nishimura [Tue, 23 Mar 2010 20:35:11 +0000 (13:35 -0700)]
memcg: disable move charge in no mmu case

In commit 02491447 ("memcg: move charges of anonymous swap"), I tried to
disable move charge feature in no mmu case by enclosing all the related
functions with "#ifdef CONFIG_MMU", but the commit places these ifdefs in
wrong place.  (it seems that it's mangled while handling some fixes...)

This patch fixes it up.

Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agofirewire: core: align driver match with modalias
Stefan Richter [Thu, 18 Mar 2010 23:39:07 +0000 (00:39 +0100)]
firewire: core: align driver match with modalias

The driver match strategy was:
  - Match vendor/model/specifier/version of the unit directory.
  - If that was a miss, match vendor from the root directory and
    model/specifier/version of the unit directory.

This was inconsistent with how the modalias string was constructed
until recently (take vendor/model from root directory and specifier/
version from unit directory).  It was also inconsistent with how it is
done since the parent commit:
  - Use vendor/model/specifier/version of the unit directory if possible,
  - fall back to one or more of vendor/model/specifier/version from the
    root directory depending on which ones are not present at the unit
    directory.

Fix this inconsistency by sharing the ROM scanner function between
modalias printer function and driver match function.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
14 years agofirewire: core: fix Model_ID in modalias
Stefan Richter [Thu, 18 Mar 2010 23:38:29 +0000 (00:38 +0100)]
firewire: core: fix Model_ID in modalias

The modalias string of devices that represent units on a FireWire node
did not show Module_ID entries within unit directories.  This was
because firewire-core searched only the root directory of the
configuration ROM for a Model_ID entry.

We now search first the root directory, then the unit directory.  IOW
honor a unit directory's Model_ID if present, otherwise fall back to the
root directory's model ID (if present).

Furthermore, apply the same change to Vendor_ID.  This had the same
issue but it was less apparent because most devices provide Vendor_ID
only in the root directory.

And finally, also use this strategy for the remaining two IDs in the
modalias, Specifier_ID and Version.  It does not actually make sense to
look for them elsewhere than in the unit directory because they are
mandatory there.  However, a uniform search order simplifies the
implementation and has no adverse affect in practice.

Side notes:
  - The older counterpart of this, nodemgr.c of ieee1394, looked for
    Vendor_ID first in the root directory, then in the unit directory,
    and for Model_ID only in the unit directory.
  - There is a single mainline driver which requires Vendor_ID and
    Model_ID --- the firedtv driver.  This one worked because FireDTVs
    provide Vendor_ID in the root directory and Model_ID identically in
    root directory and unit directory.
  - Apart from firedtv, there are currently no drivers known to me
    (including userspace drivers) that look at the Vendor_ID or Model_ID
    of the modalias.

Reported-by: Maciej Żenczykowski <zenczykowski@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
14 years agoaf_key: return error if pfkey_xfrm_policy2msg_prep() fails
Dan Carpenter [Wed, 24 Mar 2010 01:47:00 +0000 (01:47 +0000)]
af_key: return error if pfkey_xfrm_policy2msg_prep() fails

The original code saved the error value but just returned 0 in the end.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Jamal Hadi Salim <hadi@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoPCI quirk: RS780/RS880: work around missing MSI initialization
Clemens Ladisch [Mon, 22 Mar 2010 08:52:16 +0000 (09:52 +0100)]
PCI quirk: RS780/RS880: work around missing MSI initialization

AMD says in section 2.5.4 (GFX MSI Enable) of #43291 (AMD 780G Family
Register Programming Requirements):

  The SBIOS must enable internal graphics MSI capability in GCCFG by
  setting the following: NBCFG.NB_CNTL.STRAP_MSI_ENABLE='1'

Quite a few BIOS writers misinterpret this sentence and think that
enabling MSI is an optional feature.  However, clearing that bit just
prevents delivery of MSI messages but does not remove the MSI PCI
capabilities registers, and so leaves these devices unusable for any
driver that attempts to use MSI.

Setting that bit is not possible after the BIOS has locked down the
configuration registers, so we have to manually disable MSI for the
affected devices.

This fixes the codec communication errors in the HDA driver when
accessing the HDMI audio device, and allows us to get rid of the
overcautious quirk in radeon_irq_kms.c.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Alex Deucher <alexdeucher@gamil.com>
Cc: <stable@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI quirk: only apply CX700 PCI bus parking quirk if external VT6212L is present
Tim Yamin [Fri, 19 Mar 2010 21:22:58 +0000 (14:22 -0700)]
PCI quirk: only apply CX700 PCI bus parking quirk if external VT6212L is present

Apply the CX700 quirk only when an external VT6212L is present (which
is the case for the errant hardware the quirk was written for), don't
touch the settings otherwise -- Hauppage PVR-500 tuners need PCI Bus
Parking in order to work and when that's turned on everything seems
to behave fine.

I guess the underlying problem is a combination of an external VT6212L
and the CX700 rather than the CX700's PCI being broken completely for
all cases...

Reported-by: Jeroen Roos <jeroen@roosnl.com>
Signed-off-by: Tim Yamin <plasm@roo.me.uk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
14 years agoPCI: complain about devices that seem to be broken
Bjorn Helgaas [Fri, 19 Mar 2010 20:56:27 +0000 (14:56 -0600)]
PCI: complain about devices that seem to be broken

If we can tell that a device isn't working correctly, we should tell
the user to make debugging easier.  Otherwise, it can take a lot of
work to determine whether the problem is in the driver, PCMCIA, PCI,
hardware, etc., as in http://bugzilla.kernel.org/show_bug.cgi?id=12006

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>