Граф коммитов

13071 Коммитов

Автор SHA1 Сообщение Дата
Linus Torvalds 8ec96e7bba Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: fix range check on mmapped sysfs resource files
  PCI: remove excess kernel-doc notation
  PCI: annotate return value of pci_ioremap_bar with __iomem
  PCI: fix VPD limit quirk for Broadcom 5708S
2008-11-07 09:18:14 -08:00
Ingo Molnar 52c642f33b sched: fine-tune SD_SIBLING_INIT
fine-tune the HT sched-domains parameters as well.

On a HT capable box, this increases lat_ctx performance from 23.87
usecs to 1.49 usecs:

 # before

 $ ./lat_ctx -s 0 2

   "size=0k ovr=1.89
    2 23.87

 # after

 $ ./lat_ctx -s 0 2

   "size=0k ovr=1.84
     2 1.49

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-07 16:09:23 +01:00
Mike Galbraith 1480098470 sched: fine-tune SD_MC_INIT
Tune SD_MC_INIT the same way as SD_CPU_INIT:
unset SD_BALANCE_NEWIDLE, and set SD_WAKE_BALANCE.

This improves vmark by 5%:

vmark         132102 125968 125497 messages/sec    avg 127855.66    .984
vmark         139404 131719 131272 messages/sec    avg 134131.66   1.033

Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

 # *DOCUMENTATION*
2008-11-07 15:35:11 +01:00
Linus Torvalds 4bab0ea1d4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  net: Fix recursive descent in __scm_destroy().
  iwl3945: fix deadlock on suspend
  iwl3945: do not send scan command if channel count zero
  iwl3945: clear scanning bits upon failure
  ath5k: correct handling of rx status fields
  zd1211rw: Add 2 device IDs
  Fix logic error in rfkill_check_duplicity
  iwlagn: avoid sleep in softirq context
  iwlwifi: clear scanning bits upon failure
  Revert "ath5k: honor FIF_BCN_PRBRESP_PROMISC in STA mode"
  tcp: Fix recvmsg MSG_PEEK influence of blocking behavior.
  netfilter: netns ct: walk netns list under RTNL
  ipv6: fix run pending DAD when interface becomes ready
  net/9p: fix printk format warnings
  net: fix packet socket delivery in rx irq handler
  xfrm: Have af-specific init_tempsel() initialize family field of temporary selector
2008-11-06 16:44:23 -08:00
Linus Torvalds e252f4db18 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Block: use round_jiffies_up()
  Add round_jiffies_up and related routines
  block: fix __blkdev_get() for removable devices
  generic-ipi: fix the smp_mb() placement
  blk: move blk_delete_timer call in end_that_request_last
  block: add timer on blkdev_dequeue_request() not elv_next_request()
  bio: define __BIOVEC_PHYS_MERGEABLE
  block: remove unused ll_new_mergeable()
2008-11-06 15:53:47 -08:00
Linus Torvalds 067ab19923 Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/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: re-tune balancing
  sched: fix buddies for group scheduling
  sched: backward looking buddy
  sched: fix fair preempt check
  sched: cleanup fair task selection
2008-11-06 15:45:40 -08:00
David S. Miller 3b53fbf431 net: Fix recursive descent in __scm_destroy().
__scm_destroy() walks the list of file descriptors in the scm_fp_list
pointed to by the scm_cookie argument.

Those, in turn, can close sockets and invoke __scm_destroy() again.

There is nothing which limits how deeply this can occur.

The idea for how to fix this is from Linus.  Basically, we do all of
the fput()s at the top level by collecting all of the scm_fp_list
objects hit by an fput().  Inside of the initial __scm_destroy() we
keep running the list until it is empty.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-06 15:45:32 -08:00
David Howells 7597bc94d6 Fix accidental implicit cast in HR-timer conversion
Fix the hrtimer_add_expires_ns() function.  It should take a 'u64 ns' argument,
but rather takes an 'unsigned long ns' argument - which might only be 32-bits.

On FRV, this results in the kernel locking up because hrtimer_forward() passes
the result of a 64-bit multiplication to this function, for which the compiler
discards the top 32-bits - something that didn't happen when ktime_add_ns() was
called directly.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06 15:44:19 -08:00
Linus Torvalds c361948712 Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6:
  [JFFS2] fix race condition in jffs2_lzo_compress()
  [MTD] [NOR] Fix cfi_send_gen_cmd handling of x16 devices in x8 mode (v4)
  [JFFS2] Fix lack of locking in thread_should_wake()
  [JFFS2] Fix build failure with !CONFIG_JFFS2_FS_WRITEBUFFER
  [MTD] [NAND] OMAP2: remove duplicated #include
2008-11-06 15:43:13 -08:00
OGAWA Hirofumi 9c0aa1b87b fat: Cleanup FAT attribute stuff
This adds three helpers:

fat_make_attrs() - makes FAT attributes from inode.
fat_make_mode()  - makes mode_t from FAT attributes.
fat_save_attrs() - saves FAT attributes to inode.

Then this replaces: MSDOS_MKMODE() by fat_make_mode(), fat_attr() by
fat_make_attrs(), ->i_attrs = attr & ATTR_UNUSED by fat_save_attrs().
And for root inode, those is used with ATTR_DIR instead of bogus
ATTR_NONE.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06 15:41:21 -08:00
OGAWA Hirofumi 9e975dae29 fat: split include/msdos_fs.h
This splits __KERNEL__ stuff in include/msdos_fs.h into fs/fat/fat.h.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06 15:41:20 -08:00
David Miller f8d570a474 net: Fix recursive descent in __scm_destroy().
__scm_destroy() walks the list of file descriptors in the scm_fp_list
pointed to by the scm_cookie argument.

Those, in turn, can close sockets and invoke __scm_destroy() again.

There is nothing which limits how deeply this can occur.

The idea for how to fix this is from Linus.  Basically, we do all of
the fput()s at the top level by collecting all of the scm_fp_list
objects hit by an fput().  Inside of the initial __scm_destroy() we
keep running the list until it is empty.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-06 13:51:50 -08:00
Alan Stern 9c133c469d Add round_jiffies_up and related routines
This patch (as1158b) adds round_jiffies_up() and friends.  These
routines work like the analogous round_jiffies() functions, except
that they will never round down.

The new routines will be useful for timeouts where we don't care
exactly when the timer expires, provided it doesn't expire too soon.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-06 08:42:48 +01:00
Jeremy Fitzhardinge f92131c3dd bio: define __BIOVEC_PHYS_MERGEABLE
Define __BIOVEC_PHYS_MERGEABLE as the default implementation of
BIOVEC_PHYS_MERGEABLE, so that its available for reuse within an
arch-specific definition of BIOVEC_PHYS_MERGEABLE.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-06 08:41:55 +01:00
Ingo Molnar 9fcd18c9e6 sched: re-tune balancing
Impact: improve wakeup affinity on NUMA systems, tweak SMP systems

Given the fixes+tweaks to the wakeup-buddy code, re-tweak the domain
balancing defaults on NUMA and SMP systems.

Turn on SD_WAKE_AFFINE which was off on x86 NUMA - there's no reason
why we would not want to have wakeup affinity across nodes as well.
(we already do this in the standard NUMA template.)

lat_ctx on a NUMA box is particularly happy about this change:

before:

 |   phoenix:~/l> ./lat_ctx -s 0 2
 |   "size=0k ovr=2.60
 |   2 5.70

after:

 |   phoenix:~/l> ./lat_ctx -s 0 2
 |   "size=0k ovr=2.65
 |   2 2.07

a 2.75x speedup.

pipe-test is similarly happy about it too:

 |  phoenix:~/sched-tests> ./pipe-test
 |   18.26 usecs/loop.
 |   14.70 usecs/loop.
 |   14.38 usecs/loop.
 |   10.55 usecs/loop.              # +WAKE_AFFINE on domain0+domain1
 |   8.63 usecs/loop.
 |   8.59 usecs/loop.
 |   9.03 usecs/loop.
 |   8.94 usecs/loop.
 |   8.96 usecs/loop.
 |   8.63 usecs/loop.

Also:

 - disable SD_BALANCE_NEWIDLE on NUMA and SMP domains (keep it for siblings)
 - enable SD_WAKE_BALANCE on SMP domains

Sysbench+postgresql improves all around the board, quite significantly:

           .28-rc3-11474e2c  .28-rc3-11474e2c-tune
-------------------------------------------------
    1:             571              688    +17.08%
    2:            1236             1206    -2.55%
    4:            2381             2642    +9.89%
    8:            4958             5164    +3.99%
   16:            9580             9574    -0.07%
   32:            7128             8118    +12.20%
   64:            7342             8266    +11.18%
  128:            7342             8064    +8.95%
  256:            7519             7884    +4.62%
  512:            7350             7731    +4.93%
-------------------------------------------------
  SUM:           55412            59341    +6.62%

So it's a win both for the runup portion, the peak area and the tail.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-05 18:04:38 +01:00
Eric W. Biederman 467622ef2a [MTD] [NOR] Fix cfi_send_gen_cmd handling of x16 devices in x8 mode (v4)
For "unlock" cycles to 16bit devices in 8bit compatibility mode we need
to use the byte addresses 0xaaa and 0x555. These effectively match
the word address 0x555 and 0x2aa, except the latter has its low bit set.

Most chips don't care about the value of the 'A-1' pin in x8 mode,
but some -- like the ST M29W320D -- do. So we need to be careful to
set it where appropriate.

cfi_send_gen_cmd is only ever passed addresses where the low byte
is 0x00, 0x55 or 0xaa. Of those, only addresses ending 0xaa are
affected by this patch, by masking in the extra low bit when the device
is known to be in compatibility mode.

[dwmw2: Do it only when (cmd_ofs & 0xff) == 0xaa]
v4: Fix  stupid typo in cfi_build_cmd_addr that failed to compile
    I'm writing this patch way to late at night.
v3: Bring all of the work back into cfi_build_cmd_addr
    including calling of map_bankwidth(map) and cfi_interleave(cfi)
    So every caller doesn't need to.
v2: Only modified the address if we our device_type is larger than our
    bus width.

Cc: stable@kernel.org
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-11-05 14:40:25 +01:00
Patrick McHardy 9b22ea5609 net: fix packet socket delivery in rx irq handler
The changes to deliver hardware accelerated VLAN packets to packet
sockets (commit bc1d0411) caused a warning for non-NAPI drivers.
The __vlan_hwaccel_rx() function is called directly from the drivers
RX function, for non-NAPI drivers that means its still in RX IRQ
context:

[   27.779463] ------------[ cut here ]------------
[   27.779509] WARNING: at kernel/softirq.c:136 local_bh_enable+0x37/0x81()
...
[   27.782520]  [<c0264755>] netif_nit_deliver+0x5b/0x75
[   27.782590]  [<c02bba83>] __vlan_hwaccel_rx+0x79/0x162
[   27.782664]  [<f8851c1d>] atl1_intr+0x9a9/0xa7c [atl1]
[   27.782738]  [<c0155b17>] handle_IRQ_event+0x23/0x51
[   27.782808]  [<c015692e>] handle_edge_irq+0xc2/0x102
[   27.782878]  [<c0105fd5>] do_IRQ+0x4d/0x64

Split hardware accelerated VLAN reception into two parts to fix this:

- __vlan_hwaccel_rx just stores the VLAN TCI and performs the VLAN
  device lookup, then calls netif_receive_skb()/netif_rx()

- vlan_hwaccel_do_receive(), which is invoked by netif_receive_skb()
  in softirq context, performs the real reception and delivery to
  packet sockets.

Reported-and-tested-by: Ramon Casellas <ramon.casellas@cttc.es>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-04 14:49:57 -08:00
Tejun Heo 6a87e42e95 libata: implement ATA_HORKAGE_ATAPI_MOD16_DMA and apply it
libata always uses PIO for ATAPI commands when the number of bytes to
transfer isn't multiple of 16 but quantum DAT72 chokes on odd bytes
PIO transfers.  Implement a horkage to skip the mod16 check and apply
it to the quantum device.

This is reported by John Clark in the following thread.

  http://thread.gmane.org/gmane.linux.ide/34748

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: John Clark <clarkjc@runbox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-04 01:08:27 -05:00
Harvey Harrison a7b930cdf8 PCI: annotate return value of pci_ioremap_bar with __iomem
Was missing from the initial patch.

Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-11-03 14:31:18 -08:00
Linus Torvalds da4a22cba7 Merge branch 'io-mappings-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'io-mappings-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  io mapping: clean up #ifdefs
  io mapping: improve documentation
  i915: use io-mapping interfaces instead of a variety of mapping kludges
  resources: add io-mapping functions to dynamically map large device apertures
  x86: add iomap_atomic*()/iounmap_atomic() on 32-bit using fixmaps
2008-11-03 10:15:40 -08:00
Keith Packard e5beae1690 io mapping: clean up #ifdefs
Impact: cleanup

clean up ifdefs: change #ifdef CONFIG_X86_32/64 to
CONFIG_HAVE_ATOMIC_IOMAP.

flip around the #ifdef sections to clean up the structure.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-03 18:21:45 +01:00
Linus Torvalds 391e572cd1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (33 commits)
  af_unix: netns: fix problem of return value
  IRDA: remove double inclusion of module.h
  udp: multicast packets need to check namespace
  net: add documentation for skb recycling
  key: fix setkey(8) policy set breakage
  bpa10x: free sk_buff with kfree_skb
  xfrm: do not leak ESRCH to user space
  net: Really remove all of LOOPBACK_TSO code.
  netfilter: nf_conntrack_proto_gre: switch to register_pernet_gen_subsys()
  netns: add register_pernet_gen_subsys/unregister_pernet_gen_subsys
  net: delete excess kernel-doc notation
  pppoe: Fix socket leak.
  gianfar: Don't reset TBI<->SerDes link if it's already up
  gianfar: Fix race in TBI/SerDes configuration
  at91_ether: request/free GPIO for PHY interrupt
  amd8111e: fix dma_free_coherent context
  atl1: fix vlan tag regression
  SMC91x: delete unused local variable "lp"
  myri10ge: fix stop/go mmio ordering
  bonding: fix panic when taking bond interface down before removing module
  ...
2008-11-02 10:15:52 -08:00
Jeff Garzik 4ac96572f1 linux/string.h: fix comment typo
s/user/used/

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-02 10:15:07 -08:00
Keith Packard 9663f2e6a6 resources: add io-mapping functions to dynamically map large device apertures
Impact: add new generic io_map_*() APIs

Graphics devices have large PCI apertures which would consume a significant
fraction of a 32-bit address space if mapped during driver initialization.
Using ioremap at runtime is impractical as it is too slow.

This new set of interfaces uses atomic mappings on 32-bit processors and a
large static mapping on 64-bit processors to provide reasonable 32-bit
performance and optimal 64-bit performance.

The current implementation sits atop the io_map_atomic fixmap-based
mechanism for 32-bit processors.

This includes some editorial suggestions from Randy Dunlap for
Documentation/io-mapping.txt

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-31 10:12:39 +01:00
Randy Dunlap ad1d967c88 net: delete excess kernel-doc notation
Remove excess kernel-doc function parameters from networking header
& driver files:

Warning(include/net/sock.h:946): Excess function parameter or struct member 'sk' description in 'sk_filter_release'
Warning(include/linux/netdevice.h:1545): Excess function parameter or struct member 'cpu' description in 'netif_tx_lock'
Warning(drivers/net/wan/z85230.c:712): Excess function parameter or struct member 'regs' description in 'z8530_interrupt'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-30 23:54:35 -07:00
David S. Miller 194dcdba5a Merge branch 'davem-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 2008-10-30 23:50:18 -07:00
Jens Axboe 9ce8e3073d libata: add whitelist for devices with known good pata-sata bridges
libata currently imposes a UDMA5 max transfer rate and 200 sector max
transfer size for SATA devices that sit behind a pata-sata bridge. Lots
of devices have known good bridges that don't need this limit applied.
The MTRON SSD disks are such devices. Transfer rates are increased by
20-30% with the restriction removed.

So add a "blacklist" entry for the MTRON devices, with a flag indicating
that the bridge is known good.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-31 01:45:06 -04:00
Trent Piepho c132419e56 gianfar: Fix race in TBI/SerDes configuration
The init_phy() function attaches to the PHY, then configures the
SerDes<->TBI link (in SGMII mode).  The TBI is on the MDIO bus with the PHY
(sort of) and is accessed via the gianfar's MDIO registers, using the
functions gfar_local_mdio_read/write(), which don't do any locking.

The previously attached PHY will start a work-queue on a timer, and
probably an irq handler as well, which will talk to the PHY and thus use
the MDIO bus.  This uses phy_read/write(), which have locking, but not
against the gfar_local_mdio versions.

The result is that PHY code will try to use the MDIO bus at the same time
as the SerDes setup code, corrupting the transfers.

Setting up the SerDes before attaching to the PHY will insure that there is
no race between the SerDes code and *our* PHY, but doesn't fix everything.
Typically the PHYs for all gianfar devices are on the same MDIO bus, which
is associated with the first gianfar device.  This means that the first
gianfar's SerDes code could corrupt the MDIO transfers for a different
gianfar's PHY.

The lock used by phy_read/write() is contained in the mii_bus structure,
which is pointed to by the PHY.  This is difficult to access from the
gianfar drivers, as there is no link between a gianfar device and the
mii_bus which shares the same MDIO registers.  As far as the device layer
and drivers are concerned they are two unrelated devices (which happen to
share registers).

Generally all gianfar devices' PHYs will be on the bus associated with the
first gianfar.  But this might not be the case, so simply locking the
gianfar's PHY's mii bus might not lock the mii bus that the SerDes setup
code is going to use.

We solve this by having the code that creates the gianfar platform device
look in the device tree for an mdio device that shares the gianfar's
registers.  If one is found the ID of its platform device is saved in the
gianfar's platform data.

A new function in the gianfar mii code, gfar_get_miibus(), can use the bus
ID to search through the platform devices for a gianfar_mdio device with
the right ID.  The platform device's driver data is the mii_bus structure,
which the SerDes setup code can use to lock the current bus.

Signed-off-by: Trent Piepho <tpiepho@freescale.com>
CC: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-31 00:59:46 -04:00
Linus Torvalds 65fc716fa6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  Fix incompatibility with versions of Perl less than 5.6.0
  kbuild: do not include arch/<ARCH>/include/asm in find-sources twice.
  kbuild: tag with git revision when git describe is missing
  kbuild: prevent modpost from looking for a .cmd file for a static library linked into a module
  kbuild: fix KBUILD_EXTRA_SYMBOLS
  adjust init section definitions
  scripts/checksyscalls.sh: fix for non-gnu sed
  scripts/package: don't break if %{_smp_mflags} isn't set
  kbuild: setlocalversion: dont include svn change count
  kbuild: improve check-symlink
  kbuild: mkspec - fix build rpm
2008-10-30 12:55:49 -07:00
Linus Torvalds cdcba02a5f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: add quirk entry for no-name keyboard (0x13ba/0x0017)
  HID: fix hid_device_id for cross compiling
  HID: sync on deleted io_retry timer in usbhid driver
  HID: fix oops during suspend of unbound HID devices
2008-10-30 11:51:43 -07:00
Fernando Luis Vazquez Cao effdb9492d spi: fix compile error
Fix compile error below:

     LD      drivers/spi/built-in.o
     CC [M]  drivers/spi/spi_gpio.o
   In file included from drivers/spi/spi_gpio.c:26:
   include/linux/spi/spi_bitbang.h:23: error: field `work' has incomplete type
   make[2]: *** [drivers/spi/spi_gpio.o] Error 1
   make[1]: *** [drivers/spi] Error 2
   make: *** [drivers] Error 2

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30 11:38:47 -07:00
Alan Cox 731572d39f nfsd: fix vm overcommit crash
Junjiro R.  Okajima reported a problem where knfsd crashes if you are
using it to export shmemfs objects and run strict overcommit.  In this
situation the current->mm based modifier to the overcommit goes through a
NULL pointer.

We could simply check for NULL and skip the modifier but we've caught
other real bugs in the past from mm being NULL here - cases where we did
need a valid mm set up (eg the exec bug about a year ago).

To preserve the checks and get the logic we want shuffle the checking
around and add a new helper to the vm_ security wrappers

Also fix a current->mm reference in nommu that should use the passed mm

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix build]
Reported-by: Junjiro R. Okajima <hooanon05@yahoo.co.jp>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30 11:38:47 -07:00
Randy Dunlap 7106a27b52 kernel.h: fix might_sleep kernel-doc
Put the kernel-doc for might_sleep() _immediately_ before the macro
(no intervening lines).  Otherwise kernel-doc complains like so:

Warning(linux-2.6.27-rc3-git2//include/linux/kernel.h:129): No description found for parameter 'file'
Warning(linux-2.6.27-rc3-git2//include/linux/kernel.h:129): No description found for parameter 'line'

because kernel-doc is looking at the wrong function prototype (i.e.,
__might_sleep).  [Yes, I have a todo note to myself to check/warn for that
inconsistency in scripts/kernel-doc.]

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30 11:38:47 -07:00
Nick Piggin 4e02ed4b4a fs: remove prepare_write/commit_write
Nothing uses prepare_write or commit_write. Remove them from the tree
completely.

[akpm@linux-foundation.org: schedule simple_prepare_write() for unexporting]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30 11:38:45 -07:00
Li Zefan 9b913735e5 cgroups: tiny cleanups
- remove 'private' field from struct subsys
- remove cgroup_init_smp()

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>
2008-10-30 11:38:45 -07:00
Li Zefan 00c2e63c31 freezer_cg: use thaw_process() in unfreeze_cgroup()
Don't duplicate the implementation of thaw_process().

[akpm@linux-foundation.org: make __thaw_process() static]
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Acked-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30 11:38:45 -07:00
Kurt Garloff 0833422274 mm: increase the default mlock limit from 32k to 64k
By default, non-privileged tasks can only mlock() a small amount of
memory to avoid a DoS attack by ordinary users.  The Linux kernel
defaulted to 32k (on a 4k page size system) to accommodate the needs of
gpg.

However, newer gpg2 needs 64k in various circumstances and otherwise
fails miserably, see bnc#329675.

Change the default to 64k, and make it more agnostic to PAGE_SIZE.

Signed-off-by: Kurt Garloff <garloff@suse.de>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-30 11:38:45 -07:00
Jan Beulich 3f5e26cee4 adjust init section definitions
Add rodata equivalents for assembly use, and fix the section attributes
used by __REFCONST.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2008-10-29 22:02:09 +01:00
Andreas Schwab 8175fe2dda HID: fix hid_device_id for cross compiling
struct hid_device_id contains hidden padding which is bad for cross
compiling.  Make the padding explicit and consistent across
architectures.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-10-29 00:51:25 +01:00
Linus Torvalds e946217e4f Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/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: (31 commits)
  ftrace: fix current_tracer error return
  tracing: fix a build error on alpha
  ftrace: use a real variable for ftrace_nop in x86
  tracing/ftrace: make boot tracer select the sched_switch tracer
  tracepoint: check if the probe has been registered
  asm-generic: define DIE_OOPS in asm-generic
  trace: fix printk warning for u64
  ftrace: warning in kernel/trace/ftrace.c
  ftrace: fix build failure
  ftrace, powerpc, sparc64, x86: remove notrace from arch ftrace file
  ftrace: remove ftrace hash
  ftrace: remove mcount set
  ftrace: remove daemon
  ftrace: disable dynamic ftrace for all archs that use daemon
  ftrace: add ftrace warn on to disable ftrace
  ftrace: only have ftrace_kill atomic
  ftrace: use probe_kernel
  ftrace: comment arch ftrace code
  ftrace: return error on failed modified text.
  ftrace: dynamic ftrace process only text section
  ...
2008-10-28 09:52:25 -07:00
Linus Torvalds a186576925 Merge branch 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates/2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
  KVM: ia64: Makefile fix for forcing to re-generate asm-offsets.h
  KVM: Future-proof device assignment ABI
  KVM: ia64: Fix halt emulation logic
  KVM: Fix guest shared interrupt with in-kernel irqchip
  KVM: MMU: sync root on paravirt TLB flush
2008-10-28 09:50:11 -07:00
Linus Torvalds 8ca6215502 Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/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: fix documentation reference for sched_min_granularity_ns
  sched: virtual time buddy preemption
  sched: re-instate vruntime based wakeup preemption
  sched: weaken sync hint
  sched: more accurate min_vruntime accounting
  sched: fix a find_busiest_group buglet
  sched: add CONFIG_SMP consistency
2008-10-28 09:46:20 -07:00
Avi Kivity bb45e202e6 KVM: Future-proof device assignment ABI
Reserve some space so we can add more data.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-28 14:22:15 +02:00
Sheng Yang 5550af4df1 KVM: Fix guest shared interrupt with in-kernel irqchip
Every call of kvm_set_irq() should offer an irq_source_id, which is
allocated by kvm_request_irq_source_id(). Based on irq_source_id, we
identify the irq source and implement logical OR for shared level
interrupts.

The allocated irq_source_id can be freed by kvm_free_irq_source_id().

Currently, we support at most sizeof(unsigned long) different irq sources.

[Amit: - rebase to kvm.git HEAD
       - move definition of KVM_USERSPACE_IRQ_SOURCE_ID to common file
       - move kvm_request_irq_source_id to the update_irq ioctl]

[Xiantao: - Add kvm/ia64 stuff and make it work for kvm/ia64 guests]

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-28 14:21:34 +02:00
Jiri Slaby 3d5afd324a HID: fix oops during suspend of unbound HID devices
Usbhid structure is allocated on start invoked only from probe
of some driver. When there is no driver, the structure is null
and causes null-dereference oopses.

Fix it by allocating the structure on probe and disconnect of
the device itself. Also make sure we won't race between start
and resume or stop and suspend respectively.

References: http://bugzilla.kernel.org/show_bug.cgi?id=11827

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Andreas Schwab <schwab@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-10-27 15:06:01 +01:00
Ingo Molnar 4944dd62de Merge commit 'v2.6.28-rc2' into tracing/urgent 2008-10-27 10:50:54 +01:00
Remi Denis-Courmont c3a90c788b Phonet: do not reply to indication reset packets
This fixes a potential error packet loop.

Signed-off-by: Remi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-26 23:07:25 -07:00
Linus Torvalds f8d56f1771 Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md:
  md: allow extended partitions on md devices.
  md: use sysfs_notify_dirent to notify changes to md/dev-xxx/state
  md: use sysfs_notify_dirent to notify changes to md/array_state
2008-10-26 16:42:18 -07:00
Linus Torvalds ecc96e7920 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: Add support for Sony Vaio VGX-TP1E
  HID: fix lock imbalance in hiddev
  HID: fix lock imbalance in hidraw
  HID: fix hidbus/appletouch device binding regression
  HID: add hid_type to general hid struct
  HID: quirk for OLED devices present in ASUS G50/G70/G71
  HID: Remove "default m" for Thrustmaster and Zeroplus
  HID: fix hidraw_exit section mismatch
  HID: add support for another Gyration remote control
  Revert "HID: Invert HWHEEL mappings for some Logitech mice"
2008-10-26 16:34:14 -07:00
Len Brown 9fb3c5ca3d Merge branch 'i7300_idle' into release 2008-10-25 04:07:44 -04:00