Commit Graph

130273 Commits

Author SHA1 Message Date
Don Skidmore
15005a3204 ixgbe: fix dca issue with relaxed ordering turned on
The is an issue where setting Relaxed Ordering (RO) bit
(in a PCI-E write transaction) on 82598 causing the chipset
to drop DCA hints.  This patch forces RO not to be set for
descriptors as well as payload.  This will only be in effect
while DCA is enabled and no performance difference was
noticed in testing.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:54:13 -08:00
Herbert Xu
67fd1a731f net: Add debug info to track down GSO checksum bug
I'm trying to track down why people're hitting the checksum warning
in skb_gso_segment.  As the problem seems to be hitting lots of
people and I can't reproduce it or locate the bug, here is a patch
to print out more details which hopefully should help us to track
this down.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:26:44 -08:00
Phil Sutter
e85bf47e6d korina: drop leftover assignment
As the assigned value is being overwritten shortly after, it can be
dropped and so the whole variable definition moved to the start of the
function.

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:23:01 -08:00
Phil Sutter
63a66c6c0d korina: adjust headroom for new skb's also
This is copy and paste from the original driver. As skb_reserve() is
also called within korina_alloc_ring() when initially allocating the
receive descriptors, the same should be done when allocating new space
after passing an skb to upper layers.

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:23:00 -08:00
Phil Sutter
6a2fe9834e korina: fix loop back of receive descriptors
After the last loop iteration, i has the value RC32434_NUM_RDS and
therefore leads to an index overflow when used afterwards to address the
last element. This is yet another another bug introduced when rewriting
parts of the driver for upstream preparation, as the original driver
used 'RC32434_NUM_RDS - 1' instead.

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:23:00 -08:00
Divy Le Ray
eed087e367 cxgb3: Fix LRO misalignment
The lro manager's frag_align_pad setting was missing,
leading to misaligned access to the skb passed up
to the stack.

Tested-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:16 -08:00
Richard Röjfors
39eddb4c39 macb: avoid lockup when TGO during underrun
In rare cases when an underrun occur, all macb buffers where consumed
and the netif_queue was stopped infinitely. This happens then the TGO
(transfer ongoing) bit in the TSR is set (and UND). It seems like
clening up after the underrun makes the driver and the macb hardware
end up in an inconsistent state. The result of this is that in the
following calls to macb_tx no TX buffers are released -> the
netif_queue was stopped, and never woken up again.

The solution is to disable the transmitter, if TGO is set, before
clening up after the underrun, and re-enable the transmitter when the
cleaning up is done.

Signed-off-by: Richard Röjfors <richard.rojfors@endian.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:16 -08:00
Roel Kluin
24e94de41e net/9p: fid->fid is used uninitialized
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:15 -08:00
Eilon Greenstein
d05c26ce69 bnx2x: Version update
Updating the version and the year of updated files

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:15 -08:00
Eilon Greenstein
237907c1de bnx2x: Barriers for the compiler
To make sure no swapping are made by the compiler, changed HAS_WORK to inline
functions and added all the necessary barriers

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:14 -08:00
Eilon Greenstein
e47d7e6eb8 bnx2x: Driver description update
The Driver supports the 57711 and 57711E as well but the description was out of
date

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:13 -08:00
Eilon Greenstein
16b311cc29 bnx2x: Handling PHY FW load failure
If the default PHY version (0x4321) is read - the PHY FW load failed

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:13 -08:00
Eilon Greenstein
44722d1d21 bnx2x: Legacy speeds autoneg failures
10M/100M autoneg was not establishing link.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:12 -08:00
Eilon Greenstein
3858276b71 bnx2x: Prevent self test loopback failures
Setting loopback requires time to take effect

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:12 -08:00
Eilon Greenstein
6c55c3cdc8 bnx2x: 1G-10G toggling race
The HW should be configured so fast toggling between 1G and 10G will not be
missed. Make sure that the HW is re-configured in full

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:11 -08:00
Eilon Greenstein
632da4d663 bnx2x: Overstepping array bounds
If the page size is > 8KB this violation happens

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:11 -08:00
Eilon Greenstein
2add3acb11 bnx2x: Block nvram access when the device is inactive
Don't dump eeprom when bnx2x adapter is down.  Running ethtool -e causes an eeh
without it when the device is down

Signed-off-by: Paul Larson <pl@linux.vnet.ibm.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:10 -08:00
Eilon Greenstein
5a40e08e66 bnx2x: Read chip ID
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:10 -08:00
Eilon Greenstein
af2464011f bnx2x: Wrong HDR offset in CAM
Has a negative side effect when sending MAC update with no content (as done in
the self-test)

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:09 -08:00
Eilon Greenstein
b4661739c6 bnx2x: Potential race after iSCSI boot
The lock was release too soon. Make sure the HW is marked as locked until the
boot driver was unloaded from FW perspective

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:09 -08:00
Eilon Greenstein
693fc0d143 bnx2x: Handling probe failures
Failures in the probe not handled correctly - separate the flow to handle

different failures

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:08 -08:00
Eilon Greenstein
70b9986ca4 bnx2x: Free IRQ
Error check could result with not freeing the IRQ

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:07 -08:00
Gary Hade
f5495506c3 x86: remove kernel_physical_mapping_init() from init section
Impact: fix crash with memory hotplug enabled

kernel_physical_mapping_init() is called during memory hotplug
so it does not belong in the init section.

If the kernel is built with CONFIG_DEBUG_SECTION_MISMATCH=y on
the make command line, arch/x86/mm/init_64.c is compiled with
the -fno-inline-functions-called-once gcc option defeating
inlining of kernel_physical_mapping_init() within init_memory_mapping().

When kernel_physical_mapping_init() is not inlined it is placed
in the .init.text section according to the __init in it's current
declaration.  A later call to kernel_physical_mapping_init() during
a memory hotplug operation encounters an int3 trap because the
.init.text section memory has been freed.

This patch eliminates the crash caused by the int3 trap by moving the
non-inlined kernel_physical_mapping_init() from .init.text to .meminit.text.

Signed-off-by: Gary Hade <garyhade@us.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-20 00:31:43 +01:00
Ingo Molnar
bfa318ad52 fix: crash: IP: __bitmap_intersects+0x48/0x73
-tip testing found this crash:

> [   35.258515] calling  acpi_cpufreq_init+0x0/0x127 @ 1
> [   35.264127] BUG: unable to handle kernel NULL pointer dereference at (null)
> [   35.267554] IP: [<ffffffff80478092>] __bitmap_intersects+0x48/0x73
> [   35.267554] PGD 0
> [   35.267554] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC

arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c is still broken: there's no
allocation of the variable mask, so we pass in an uninitialized cmd.mask
field to drv_read(), which then passes it to the scheduler which then
crashes ...

Switch it over to the much simpler constant-cpumask-pointers approach.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-20 00:17:01 +01:00
Guennadi Liakhovetski
5296b56d1b i.MX31: Image Processing Unit DMA and IRQ drivers
i.MX3x SoCs contain an Image Processing Unit, consisting of a Control
Module (CM), Display Interface (DI), Synchronous Display Controller (SDC),
Asynchronous Display Controller (ADC), Image Converter (IC), Post-Filter
(PF), Camera Sensor Interface (CSI), and an Image DMA Controller (IDMAC).
CM contains, among other blocks, an Interrupt Generator (IG) and a Clock
and Reset Control Unit (CRCU). This driver serves IDMAC and IG. They are
supported over dmaengine and irq-chip APIs respectively.

IDMAC is a specialised DMA controller, its DMA channels cannot be used for
general-purpose operations, even though it might be possible to configure
a memory-to-memory channel for memcpy operation. This driver will not work
with generic dmaengine clients, clients, wishing to use it must use
respective wrapper structures, they also must specify which channels they
require, as channels are hard-wired to specific IPU functions.

Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-01-19 15:36:21 -07:00
Guennadi Liakhovetski
ef560682a9 dmaengine: add async_tx_clear_ack() macro
To complete the DMA_CTRL_ACK handling API add a async_tx_clear_ack() macro.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-01-19 15:36:21 -07:00
Dan Williams
c50331e8be dmaengine: dma_issue_pending_all == nop when CONFIG_DMA_ENGINE=n
The device list will always be empty in this configuration, so no need
to walk the list.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-01-19 15:35:54 -07:00
Dan Williams
83436a0560 dmaengine: kill some dubious WARN_ONCEs
dma_find_channel and dma_issue_pending_all are good places to warn about
improper api usage.  However, warning correctly means synchronizing with
dma_list_mutex, i.e. too much overhead for these fast-path calls.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-01-19 14:39:10 -07:00
Mike Travis
7285908185 cpufreq: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_write
Impact: use new work_on_cpu function to reduce stack usage

Replace the saving of current->cpus_allowed and set_cpus_allowed_ptr() with
a work_on_cpu function for drv_read() and drv_write().

Basically converts do_drv_{read,write} into "work_on_cpu" functions that
are now called by drv_read and drv_write.

Note: This patch basically reverts 50c668d6 which reverted 7503bfba, now
that the work_on_cpu() function is more stable.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Tested-by: Dieter Ries <clip2@gmx.de>
Tested-by: Maciej Rutecki <maciej.rutecki@gmail.com>
Cc: Dave Jones <davej@redhat.com>
Cc: <cpufreq@vger.kernel.org>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-19 22:36:13 +01:00
Rusty Russell
8ccad40df8 work_on_cpu: Use our own workqueue.
Impact: remove potential clashes with generic kevent workqueue

Annoyingly, some places we want to use work_on_cpu are already in
workqueues.  As per Ingo's suggestion, we create a different workqueue
for work_on_cpu.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-19 22:36:07 +01:00
Rusty Russell
31ad908120 work_on_cpu: don't try to get_online_cpus() in work_on_cpu.
Impact: remove potential circular lock dependency with cpu hotplug lock

This has caused more problems than it solved, with a pile of cpu
hotplug locking issues.

Followup patches will get_online_cpus() in callers that need it, but
if they don't do it they're no worse than before when they were using
set_cpus_allowed without locking.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-19 22:36:02 +01:00
David S. Miller
b7c18c1b26 sparc64: Initialize FHC/CLOCK LED platform_device 'id' field correctly.
There is only one clock board, so use -1 as the 'id' so we get just
the base name as the LED device name string.

There are multiple FHC boards potentially in a system so use the board
number as the 'id' value for that case.

Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 13:27:15 -08:00
Jiri Slaby
c2fdd36b55 PCI hotplug: fix lock imbalance in pciehp
set_lock_status omits mutex_unlock in fail path. Add the omitted
unlock.

As a result a lockup caused by this can be triggered from userspace
by writing 1 to /sys/bus/pci/slots/.../lock often enough.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-19 10:55:54 -08:00
Takashi Iwai
6e78b780ef Merge branch 'topic/virtuoso' into for-linus 2009-01-19 14:08:25 +01:00
Clemens Ladisch
3288a66243 sound: virtuoso: document HDAV1.3 driver status
Mention in the Kconfig help text that the HDAV1.3 code is rather
experimental.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-19 14:07:37 +01:00
Clemens Ladisch
45bf810113 sound: virtuoso: add newline
Add a missing newline.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-19 14:07:36 +01:00
Clemens Ladisch
22c733788b sound: virtuoso: enable UART on Xonar HDAV1.3
This hardware has a better chance of working correctly if we don't
forget to enable it.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-19 14:07:21 +01:00
David Brownell
ef183f6b59 drivers/ide/palm_bk3710.c buildfix
CC      drivers/ide/palm_bk3710.o
drivers/ide/palm_bk3710.c: In function 'palm_bk3710_probe':
drivers/ide/palm_bk3710.c:382: warning: assignment makes integer from pointer without a cast

Someone should fix hw_regs_t to neither be a typedef, nor
use "unsigned long" where it should use "void __iomem *".

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-19 13:46:57 +01:00
Michael Schmitz
abb8817967 ide: fix Falcon IDE breakage
[m68k] Falcon IDE: always serialize, in order to force execution of
       ide_get_lock() and friends.

Signed-off-By: Michael Schmitz <schmitz@debian.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
[bart: set flag in falconide_port_info instead of falconide_init()]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-19 13:46:56 +01:00
Andreas Schwab
bb54affa6f ide: fix IDE PMAC breakage
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> writes:

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> ---
>  drivers/ide/ide-probe.c |    9 ++-------
>  1 file changed, 2 insertions(+), 7 deletions(-)
>
> Index: b/drivers/ide/ide-probe.c
> ===================================================================
> --- a/drivers/ide/ide-probe.c
> +++ b/drivers/ide/ide-probe.c
> @@ -640,14 +640,9 @@ static int ide_register_port(ide_hwif_t 
>  	/* register with global device tree */
>  	dev_set_name(&hwif->gendev, hwif->name);
>  	hwif->gendev.driver_data = hwif;
> -	if (hwif->gendev.parent == NULL) {
> -		if (hwif->dev)
> -			hwif->gendev.parent = hwif->dev;
> -		else
> -			/* Would like to do = &device_legacy */
> -			hwif->gendev.parent = NULL;
> -	}
> +	hwif->gendev.parent = hwif->dev;

This [bart: commit 96d4094123 ("ide: small
ide_register_port() cleanup")] breaks ide-pmac.  It overwrites the parent
that pmac_ide_macio_attach has set.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-01-19 13:46:56 +01:00
Dave Airlie
c1ff85d977 drm: fix leak of device mappings since multi-master changes.
Device maps now contain a link to the master that created them, so
when cleaning up the master, remove any maps that are connected to it.
Also delete any remaining maps at driver unload time.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-01-19 17:17:58 +10:00
Eric Sandeen
b6e3222732 [XFS] Remove the rest of the macro-to-function indirections.
Remove the last of the macros-defined-to-static-functions.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2009-01-19 14:45:55 +11:00
Christoph Hellwig
b828d8c338 xfs: sanity check attr fork size
Recently we have quite a few kerneloops reports about dereferencing a NULL
if_data in the attribute fork.  From looking over the code this can only
happen if we pass a 0 size argument to xfs_iformat_local.  This implies some
sort of corruption and in fact the only mailinglist report about this from
earlier this year was after a powerfail presumably on a system with write
cache and without barriers.

Add a quick sanity check for the attr fork size in xfs_iformat to catch
these early and without an oops.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
2009-01-19 14:45:11 +11:00
Christoph Hellwig
49739140e5 xfs: fix bad_features2 fixups for the root filesystem
Currently the bad_features2 fixup and the alignment updates in the superblock
are skipped if we mount a filesystem read-only.  But for the root filesystem
the typical case is to mount read-only first and only later remount writeable
so we'll never perform this update at all.  It's not a big problem but means
the logs of people needing the fixup get spammed at every boot because they
never happen on disk.

Reported-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
2009-01-19 14:45:04 +11:00
Christoph Hellwig
5aa2dc0a06 xfs: add a lock class for group/project dquots
We can have both a user and a group/project dquot locked at the same time,
as long as the user dquot is locked first.  Tell lockdep about that fact
by making the group/project dquots a different lock class.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
2009-01-19 14:44:59 +11:00
Christoph Hellwig
4f2d4ac6e5 xfs: lockdep annotations for xfs_dqlock2
xfs_dqlock2 locks two xfs_dquots, which is fine as it always locks the
dquot with the lower id first.  Use mutex_lock_nested to tell lockdep
about this fact.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
2009-01-19 14:44:52 +11:00
Christoph Hellwig
080dda7f5e xfs: add a separate lock class for the per-mount list of dquots
We can have both a a quota hash chain and the per-mount list locked at
the same time.  But given that both use the same struct dqhash as list
head we have to tell lockdep that they are different lock classes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
2009-01-19 14:44:44 +11:00
Christoph Hellwig
62e194ecda xfs: use mnt_want_write in compat_attrmulti ioctl
The compat version of the attrmulti ioctl needs to ask for and then
later release write access to the mount just like the native version,
otherwise we could potentially write to read-only mounts.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
2009-01-19 14:44:30 +11:00
Christoph Hellwig
ab596ad897 xfs: fix dentry aliasing issues in open_by_handle
Open by handle just grabs an inode by handle and then creates itself
a dentry for it.  While this works for regular files it is horribly
broken for directories, where the VFS locking relies on the fact that
there is only just one single dentry for a given inode, and that
these are always connected to the root of the filesystem so that
it's locking algorithms work (see Documentations/filesystems/Locking)

Remove all the existing open by handle code and replace it with a small
wrapper around the exportfs code which deals with all these issues.
At the same time we also make the checks for a valid handle strict
enough to reject all not perfectly well formed handles - given that
we never hand out others that's okay and simplifies the code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
2009-01-19 14:43:18 +11:00
Leonardo Potenza
c7f8562a51 x86: fix section mismatch warnings in kernel/setup_percpu.c
The function setup_cpu_local_masks() has been marked __init, in
order to remove the following section mismatch messages:

WARNING: vmlinux.o(.text+0x3c2c7): Section mismatch in reference from the function setup_cpu_local_masks() to the function .init.text:alloc_bootmem_cpumask_var()
The function setup_cpu_local_masks() references
the function __init alloc_bootmem_cpumask_var().
This is often because setup_cpu_local_masks lacks a __init
annotation or the annotation of alloc_bootmem_cpumask_var is wrong.

WARNING: vmlinux.o(.text+0x3c2d3): Section mismatch in reference from the function setup_cpu_local_masks() to the function .init.text:alloc_bootmem_cpumask_var()
The function setup_cpu_local_masks() references
the function __init alloc_bootmem_cpumask_var().
This is often because setup_cpu_local_masks lacks a __init
annotation or the annotation of alloc_bootmem_cpumask_var is wrong.

WARNING: vmlinux.o(.text+0x3c2df): Section mismatch in reference from the function setup_cpu_local_masks() to the function .init.text:alloc_bootmem_cpumask_var()
The function setup_cpu_local_masks() references
the function __init alloc_bootmem_cpumask_var().
This is often because setup_cpu_local_masks lacks a __init
annotation or the annotation of alloc_bootmem_cpumask_var is wrong.

WARNING: vmlinux.o(.text+0x3c2eb): Section mismatch in reference from the function setup_cpu_local_masks() to the function .init.text:alloc_bootmem_cpumask_var()
The function setup_cpu_local_masks() references
the function __init alloc_bootmem_cpumask_var().
This is often because setup_cpu_local_masks lacks a __init
annotation or the annotation of alloc_bootmem_cpumask_var is wrong.

Signed-off-by: Leonardo Potenza <lpotenza@inwind.it>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-18 23:59:22 +01:00