Commit Graph

167648 Commits

Author SHA1 Message Date
Mikulas Patocka
c1cc65caa1 dm snapshot: allow chunk size to be less than page size
Allow the snapshot chunk size to be smaller than the page size
The code is now capable of handling this due to some previous
fixes and enhancements.

As the page size varies between computers, prior to this patch,
the chunk size of a snapshot dictated which machines could read it:
Snapshots created on one machine might not be readable on another.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:22 +01:00
Mikulas Patocka
df96eee679 dm snapshot: use unsigned integer chunk size
Use unsigned integer chunk size.

Maximum chunk size is 512kB, there won't ever be need to use 4GB chunk size,
so the number can be 32-bit. This fixes compiler failure on 32-bit systems
with large block devices.

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:17 +01:00
Mikulas Patocka
4c6fff445d dm snapshot: lock snapshot while supplying status
This patch locks the snapshot when returning status.  It fixes a race
when it could return an invalid number of free chunks if someone
was simultaneously modifying it.

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:16 +01:00
Mikulas Patocka
0e8c4e4e3e dm exception store: fix failed set_chunk_size error path
Properly close the device if failing because of an invalid chunk size.

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:16 +01:00
Mikulas Patocka
3f2412dc85 dm snapshot: require non zero chunk size by end of ctr
If we are creating snapshot with memory-stored exception store, fail if
the user didn't specify chunk size. Zero chunk size would probably crash
a lot of places in the rest of snapshot code.

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:16 +01:00
Kiyoshi Ueda
f88fb98118 dm: dec_pending needs locking to save error value
Multiple instances of dec_pending() can run concurrently so a lock is
needed when it saves the first error code.

I have never experienced actual problem without locking and just found
this during code inspection while implementing the barrier support
patch for request-based dm.

This patch adds the locking.
I've done compile, boot and basic I/O testings.

Cc: stable@kernel.org
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:15 +01:00
Zdenek Kabelac
03022c54b9 dm: add missing del_gendisk to alloc_dev error path
Add missing del_gendisk() to error path when creation of workqueue fails.
Otherwice there is a resource leak and following warning is shown:

WARNING: at fs/sysfs/dir.c:487 sysfs_add_one+0xc5/0x160()
sysfs: cannot create duplicate filename '/devices/virtual/block/dm-0'

Cc: stable@kernel.org
Signed-off-by: Zdenek Kabelac <zkabelac@redhat.com>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:15 +01:00
Andrew Morton
bca915aae8 dm log: userspace fix incorrect luid cast in userspace_ctr
mips:

drivers/md/dm-log-userspace-base.c: In function `userspace_ctr':
drivers/md/dm-log-userspace-base.c:159: warning: cast from pointer to integer of different size

Cc: stable@kernel.org
Cc: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:15 +01:00
Jonathan Brassow
034a186d29 dm snapshot: free exception store on init failure
While initializing the snapshot module, if we fail to register
the snapshot target then we must back-out the exception store
module initialization.

Cc: stable@kernel.org
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:14 +01:00
Mikulas Patocka
6d45d93ead dm snapshot: sort by chunk size to fix race
Avoid a race causing corruption when snapshots of the same origin have
different chunk sizes by sorting the internal list of snapshots by chunk
size, largest first.
  https://bugzilla.redhat.com/show_bug.cgi?id=182659

For example, let's have two snapshots with different chunk sizes. The
first snapshot (1) has small chunk size and the second snapshot (2) has
large chunk size.  Let's have chunks A, B, C in these snapshots:
snapshot1: ====A====   ====B====
snapshot2: ==========C==========

(Chunk size is a power of 2. Chunks are aligned.)

A write to the origin at a position within A and C comes along. It
triggers reallocation of A, then reallocation of C and links them
together using A as the 'primary' exception.

Then another write to the origin comes along at a position within B and
C.  It creates pending exception for B.  C already has a reallocation in
progress and it already has a primary exception (A), so nothing is done
to it: B and C are not linked.

If the reallocation of B finishes before the reallocation of C, because
there is no link with the pending exception for C it does not know to
wait for it and, the second write is dispatched to the origin and causes
data corruption in the chunk C in snapshot2.

To avoid this situation, we maintain snapshots sorted in descending
order of chunk size.  This leads to a guaranteed ordering on the links
between the pending exceptions and avoids the problem explained above -
both A and B now get linked to C.

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2009-10-16 23:18:14 +01:00
Linus Torvalds
012abeea66 Linux 2.6.32-rc5 2009-10-15 17:41:50 -07:00
Linus Torvalds
48593229ad Merge branch 'docs-next' of git://git.lwn.net/linux-2.6
* 'docs-next' of git://git.lwn.net/linux-2.6:
  Update flex_arrays.txt
2009-10-15 15:21:42 -07:00
Linus Torvalds
8e7768d3f4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
  dlm: fix socket fd translation
  dlm: fix lowcomms_connect_node for sctp
2009-10-15 15:21:20 -07:00
Linus Torvalds
36d6f3ecbd Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/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:
  Revert "x86: linker script syntax nits"
  x86, perf_event: Rename 'performance counter interrupt'
2009-10-15 15:20:17 -07:00
David Howells
21279cfa10 KEYS: get_instantiation_keyring() should inc the keyring refcount in all cases
The destination keyring specified to request_key() and co. is made available to
the process that instantiates the key (the slave process started by
/sbin/request-key typically).  This is passed in the request_key_auth struct as
the dest_keyring member.

keyctl_instantiate_key and keyctl_negate_key() call get_instantiation_keyring()
to get the keyring to attach the newly constructed key to at the end of
instantiation.  This may be given a specific keyring into which a link will be
made later, or it may be asked to find the keyring passed to request_key().  In
the former case, it returns a keyring with the refcount incremented by
lookup_user_key(); in the latter case, it returns the keyring from the
request_key_auth struct - and does _not_ increment the refcount.

The latter case will eventually result in an oops when the keyring prematurely
runs out of references and gets destroyed.  The effect may take some time to
show up as the key is destroyed lazily.

To fix this, the keyring returned by get_instantiation_keyring() must always
have its refcount incremented, no matter where it comes from.

This can be tested by setting /etc/request-key.conf to:

#OP	TYPE	DESCRIPTION	CALLOUT INFO	PROGRAM ARG1 ARG2 ARG3 ...
#======	=======	===============	===============	===============================
create  *	test:*		*		|/bin/false %u %g %d %{user:_display}
negate	*	*		*		/bin/keyctl negate %k 10 @u

and then doing:

	keyctl add user _display aaaaaaaa @u
        while keyctl request2 user test:x test:x @u &&
        keyctl list @u;
        do
                keyctl request2 user test:x test:x @u;
                sleep 31;
                keyctl list @u;
        done

which will oops eventually.  Changing the negate line to have @u rather than
%S at the end is important as that forces the latter case by passing a special
keyring ID rather than an actual keyring ID.

Reported-by: Alexander Zangerl <az@bond.edu.au>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Alexander Zangerl <az@bond.edu.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-15 15:19:58 -07:00
Linus Torvalds
37a08b13eb Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/pci: Fix MODPOST warning
  powerpc/oprofile: Add ppc750 CL as supported by oprofile
  powerpc: warning: allocated section `.data_nosave' not in segment
  powerpc/kgdb: Fix build failure caused by "kgdb.c: unused variable 'acc'"
  powerpc: Fix hypervisor TLB batching
  powerpc/mm: Fix hang accessing top of vmalloc space
  powerpc: Fix memory leak in axon_msi.c
  powerpc/pmac: Fix issues with sleep on some powerbooks
  powerpc64/ftrace: use PACA to retrieve TOC in mod_return_to_handler
  powerpc/ftrace: show real return addresses in modules
2009-10-15 15:15:03 -07:00
Linus Torvalds
bd72f85b9a Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI button: don't try to use a non-existent lid device
  ACPI: video: Loosen strictness of video bus detection code
  eeepc-laptop: Prevent a panic when disabling RT2860 wireless when associated
  eeepc-laptop: Properly annote eeepc_enable_camera().
  ACPI / PCI: Fix NULL pointer dereference in acpi_get_pci_dev() (rev. 2)
  fujitsu-laptop: address missed led-class ifdef fixup
  ACPI: Kconfig, fix proc aggregator text
  ACPI: add AC/DC notifier
2009-10-15 15:10:27 -07:00
Linus Torvalds
13e356c977 Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  OMAP2xxx clock: set up clockdomain pointer in struct clk
  OMAP: Fix race condition with autodeps
  omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stop
  omap: Initialization of SDRC params on Zoom2
  omap: RX-51: Drop I2C-1 speed to 2200
  omap: SDMA: Fixing bug in omap_dma_set_global_params()
  omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfig
2009-10-15 15:09:55 -07:00
Linus Torvalds
dcbeb0bec5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: always pin metadata in discard mode
  Btrfs: enable discard support
  Btrfs: add -o discard option
  Btrfs: properly wait log writers during log sync
  Btrfs: fix possible ENOSPC problems with truncate
  Btrfs: fix btrfs acl #ifdef checks
  Btrfs: streamline tree-log btree block writeout
  Btrfs: avoid tree log commit when there are no changes
  Btrfs: only write one super copy during fsync
2009-10-15 15:06:37 -07:00
Linus Torvalds
2b650df2ce Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  tty: fix vt_compat_ioctl
2009-10-15 15:06:02 -07:00
Linus Torvalds
e7957ec6b6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  sysfs: Allow sysfs_notify_dirent to be called from interrupt context.
  sysfs: Allow sysfs_move_dir(..., NULL) again.
2009-10-15 15:05:46 -07:00
Linus Torvalds
59c0b586ae Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: gadget: Fix EEM driver comments and VID/PID
  usb-storage: Workaround devices with bogus sense size
  USB: ehci: Fix IST boundary checking interval math.
  USB: option: Support for AIRPLUS MCD650 Datacard
  USB: whci-hcd: always do an update after processing a halted qTD
  USB: whci-hcd: handle early deletion of endpoints
  USB: wusb: don't use the stack to read security descriptor
  USB: rename Documentation/ABI/.../sysfs-class-usb_host
2009-10-15 15:05:33 -07:00
Linus Torvalds
b25eaebc6c Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
  Staging: rt2860sta: prevent a panic when disabling when associated
  staging: more sched.h fixes
  Staging: et131x: Fix the add_10bit macro
  Staging: et131x: Correct WRAP bit handling
  staging: Complete sched.h removal from interrupt.h
  Staging: vme: fix sched.h build breakage
  Staging: poch: fix sched.h build breakage
  Staging: b3dfg: fix sched.h build breakage
  Staging: comedi: fix sched.h build breakage
  Staging: iio: Fix missing include <linux/sched.h>
2009-10-15 15:05:20 -07:00
Linus Torvalds
c3da31485f 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: (53 commits)
  vmxnet: fix 2 build problems
  net: add support for STMicroelectronics Ethernet controllers.
  net: ks8851_mll uses mii interfaces
  net/fec_mpc52xx: Fix kernel panic on FEC error
  net: Fix OF platform drivers coldplug/hotplug when compiled as modules
  TI DaVinci EMAC: Clear statistics register properly.
  r8169: partial support and phy init for the 8168d
  irda/sa1100_ir: check return value of startup hook
  udp: Fix udp_poll() and ioctl()
  WAN: fix Cisco HDLC handshaking.
  tcp: fix tcp_defer_accept to consider the timeout
  3c574_cs: spin_lock the set_multicast_list function
  net: Teach pegasus driver to ignore bluetoother adapters with clashing Vendor:Product IDs
  netxen: fix pci bar mapping
  ethoc: fix warning from 32bit build
  libertas: fix build
  net: VMware virtual Ethernet NIC driver: vmxnet3
  net: Fix IXP 2000 network driver building.
  libertas: fix build
  mac80211: document ieee80211_rx() context requirement
  ...
2009-10-15 15:03:17 -07:00
Linus Torvalds
bd0704111e Merge the right tty-fixes branch
* branch 'tty-fixes'
  tty: use the new 'flush_delayed_work()' helper to do ldisc flush
  workqueue: add 'flush_delayed_work()' to run and wait for delayed work
  tty: Make flush_to_ldisc() locking more robust
2009-10-15 14:59:24 -07:00
Jonathan Corbet
1243ba98e3 Update flex_arrays.txt
The 2.6.32 merge window brought a number of changes to the flexible array
API; this patch updates the documentation to match the new state of
affairs.

Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2009-10-15 07:25:20 -06:00
Ingo Molnar
db8590f504 Revert "x86: linker script syntax nits"
This reverts commit e9a63a4e55.

This breaks older binutils, where sink-less asserts are broken.

See this commit for further details:

  d2ba8b2: x86: Fix assert syntax in vmlinux.lds.S

Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <4AD6523D.5030909@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15 08:09:55 +02:00
Ingo Molnar
a0738a688d Merge branch 'linus' into x86/urgent
Merge reason: pull in latest, to be able to revert a patch there.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-15 08:07:30 +02:00
Len Brown
d59733c1e5 Merge branch 'misc' into release 2009-10-15 00:47:13 -04:00
Len Brown
4697fd6f6a Merge branch 'launchpad-333386' into release 2009-10-15 00:46:57 -04:00
Len Brown
fee807e8ff Merge branch 'eeepc-laptop' into release 2009-10-15 00:46:46 -04:00
Len Brown
f63a904891 Merge branch 'bugzilla-14129' into release 2009-10-15 00:45:37 -04:00
Randy Dunlap
8f7e524ce3 vmxnet: fix 2 build problems
vmxnet3 uses in_dev* interfaces so it should depend on INET.
Also fix so that the driver builds when CONFIG_PCI_MSI is disabled.

vmxnet3_drv.c:(.text+0x2a88cb): undefined reference to `in_dev_finish_destroy'

drivers/net/vmxnet3/vmxnet3_drv.c:1335: error: 'struct vmxnet3_intr' has no member named 'msix_entries'
drivers/net/vmxnet3/vmxnet3_drv.c:1384: error: 'struct vmxnet3_intr' has no member named 'msix_entries'
drivers/net/vmxnet3/vmxnet3_drv.c:2137: error: 'struct vmxnet3_intr' has no member named 'msix_entries'
drivers/net/vmxnet3/vmxnet3_drv.c:2138: error: 'struct vmxnet3_intr' has no member named 'msix_entries'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Bhavesh davda <bhavesh@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-14 20:38:58 -07:00
Benjamin Herrenschmidt
b734dd5b57 Merge commit 'ftrace/ppc' into merge 2009-10-15 14:09:11 +11:00
Tony Lindgren
1560523674 Merge branch '2_6_32rc4_fixes' of git://git.pwsan.com/linux-2.6 into omap-fixes-for-linus 2009-10-14 15:46:15 -07:00
Andreas Schwab
4b1fe77972 tty: fix vt_compat_ioctl
Call compat_unimap_ioctl, not do_unimap_ioctl.

This was broken by commit e9216651.

The compat_unimap_ioctl was originally called do_unimap_ioctl in
fs/compat_ioctl.h which got moved to drivers/char/vt_ioctl.c.
In that patch, the caller was not updated and consequently called
the native handler.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-14 15:43:18 -07:00
Paul Walmsley
a7f20b2695 OMAP2xxx clock: set up clockdomain pointer in struct clk
clock24xx.c is missing a omap2_init_clk_clkdm() in its
omap2_clk_init() function.  Among other bad effects, this causes the
OMAP hwmod layer to oops on boot.

Thanks to Carlos Aguiar <carlos.aguiar@indt.org.br> and Stefano
Panella <Stefano.Panella@csr.com> for reporting this bug.  Thanks to Tony
Lindgren <tony@atomide.com> for N800 booting advice.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Carlos Aguiar <carlos.aguiar@indt.org.br>
Cc: Stefano Panella <Stefano.Panella@csr.com>
Cc: Tony Lindgren <tony@atomide.com>
2009-10-14 16:40:37 -06:00
Kalle Jokiniemi
a0219fbdac OMAP: Fix race condition with autodeps
There is a possible race condition in clockdomain
code handling hw supported idle transitions.

When multiple autodeps dependencies are being added
or removed, a transition of still remaining dependent
powerdomain can result in false readings of the
state counter. This is especially fatal for off mode
state counter, as it could result in a driver not
noticing a context loss.

Fixed by disabling hw supported state transitions
when autodeps are being changed.

Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2009-10-14 16:40:37 -06:00
Linus Torvalds
a3ccf63ee6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: sbp2: provide fallback if mgt_ORB_timeout is missing
  ieee1394: add documentation entry to MAINTAINERS
  ieee1394: update URLs in debugging-via-ohci1394.txt
2009-10-14 15:36:19 -07:00
Linus Torvalds
d6047d79b9 Merge branch 'tty-fixes'
* branch 'tty-fixes':
  tty: use the new 'flush_delayed_work()' helper to do ldisc flush
  workqueue: add 'flush_delayed_work()' to run and wait for delayed work
  Make flush_to_ldisc properly handle parallel calls
2009-10-14 15:34:55 -07:00
Linus Torvalds
601adfedba Merge branch 'topic/x86-lds-nits' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland
* 'topic/x86-lds-nits' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
  x86: linker script syntax nits
2009-10-14 15:33:05 -07:00
Linus Torvalds
655bdb0e07 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  watchdog: Fix rio watchdog probe function
  sparc64: Set IRQF_DISABLED on LDC channel IRQs.
  sparc64: Fix D-cache flushing on swapin from SW devices.
  sparc64: Fix niagara2 perf IRQ bits.
2009-10-14 15:31:48 -07:00
Linus Torvalds
e7d688ec86 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] sclp_vt220 build fix
  [S390] cio: change misleading console logic
  [S390] call home support: fix proc handler
  [S390] dasd: use idal for device characteristics
  [S390] Add highgprs facility to /proc/cpuinfo
  [S390] dasd: fix locking bug
  [S390] tape390: Fix request queue handling in block driver
  [S390] hypfs: Use subcode 6 if subcode 7 is not available
2009-10-14 15:31:15 -07:00
Linus Torvalds
d470c05bed Merge branch 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Fix a TRACE_IRQS_OFF typo.
  sh: Optimize the setup_rt_frame() I-cache flush.
  sh: Populate initial secondary CPU info from boot_cpu_data.
  sh: Tidy up SMP cpuinfo.
  sh: Use boot_cpu_data for FPU tests in sigcontext paths.
  sh: ftrace: Fix up syscall tracepoint support.
  sh: force dcache flush if dcache_dirty bit set.
  sh: update die() output.
2009-10-14 15:30:45 -07:00
Linus Torvalds
ee67e6cbe1 Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/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:
  oprofile: warn on freeing event buffer too early
  oprofile: fix race condition in event_buffer free
  lockdep: Use cpu_clock() for lockstat
2009-10-14 15:25:35 -07:00
Linus Torvalds
220a6258b1 Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/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:
  perf events: Update MAINTAINERS entry file patterns
  perf tools: Remove static debugfs path from parse-events
  perf tools: Fix the NO_64BIT build on pure 64-bit systems
  perf tools: Fix const char type propagation
2009-10-14 15:25:23 -07:00
Linus Torvalds
f061d83a2b 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 missing kernel-doc notation
  Revert "x86, timers: Check for pending timers after (device) interrupts"
  sched: Update the clock of runqueue select_task_rq() selected
2009-10-14 15:25:04 -07:00
Linus Torvalds
e345fe1ada 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:
  tracing/filters: Fix memory leak when setting a filter
  tracing: fix trace_vprintk call
2009-10-14 15:24:51 -07:00
Linus Torvalds
ea87644105 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/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/paravirt: Use normal calling sequences for irq enable/disable
  x86: fix kernel panic on 32 bits when profiling
  x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop
  x86, vmi: Mark VMI deprecated and schedule it for removal
2009-10-14 15:24:32 -07:00
Neil Brown
83db93f4de sysfs: Allow sysfs_notify_dirent to be called from interrupt context.
sysfs_notify_dirent is a simple atomic operation that can be used to
alert user-space that new data can be read from a sysfs attribute.

Unfortunately it cannot currently be called from non-process context
because of its use of spin_lock which is sometimes taken with
interrupts enabled.

So change all lockers of sysfs_open_dirent_lock to disable interrupts,
thus making sysfs_notify_dirent safe to be called from non-process
context (as drivers/md does in md_safemode_timeout).

sysfs_get_open_dirent is (documented as being) only called from
process context, so it uses spin_lock_irq.  Other places
use spin_lock_irqsave.

The usage for sysfs_notify_dirent in md_safemode_timeout was
introduced in 2.6.28, so this patch is suitable for that and more
recent kernels.

Reported-by: Joel Andres Granados <jgranado@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-14 15:16:25 -07:00