linux-2.6.git
13 years agoMerge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Sat, 11 Oct 2008 15:50:01 +0000 (08:50 -0700)]
Merge branch 'for-linus' of git://git390.osdl.marist.edu/linux-2.6

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (27 commits)
  [S390] Fix checkstack for s390
  [S390] fix initialization of stp
  [S390] 3215: Remove tasklet.
  [S390] console flush on panic / reboot
  [S390] introduce dirty bit for kvm live migration
  [S390] Add ioctl support for EMC Symmetrix Subsystem Control I/O
  [S390] xpram: per device block request queues.
  [S390] dasd: fix message flood for unsolicited interrupts
  [S390] Move private simple udelay function to arch/s390/lib/delay.c.
  [S390] dcssblk: add >2G DCSSs support and stacked contiguous DCSSs support.
  [S390] ptrace changes
  [S390] s390: use sys_pause for 31bit pause entry point
  [S390] qdio enhanced SIGA (iqdio) support.
  [S390] cio: fix cio_tpi.
  [S390] cio: Correct use of ! and &
  [S390] cio: inline assembly cleanup
  [S390] bus_id -> dev_set_name() for css and ccw busses
  [S390] bus_id ->dev_name() conversions in qdio
  [S390] Use s390_root_dev_* in kvm_virtio.
  [S390] more bus_id -> dev_name conversions
  ...

13 years agoMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
Linus Torvalds [Sat, 11 Oct 2008 15:49:34 +0000 (08:49 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/davej/cpufreq

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Fix BUG: using smp_processor_id() in preemptible code
  [CPUFREQ] Don't export governors for default governor
  [CPUFREQ][6/6] cpufreq: Add idle microaccounting in ondemand governor
  [CPUFREQ][5/6] cpufreq: Changes to get_cpu_idle_time_us(), used by ondemand governor
  [CPUFREQ][4/6] cpufreq_ondemand: Parameterize down differential
  [CPUFREQ][3/6] cpufreq: get_cpu_idle_time() changes in ondemand for idle-microaccounting
  [CPUFREQ][2/6] cpufreq: Change load calculation in ondemand for software coordination
  [CPUFREQ][1/6] cpufreq: Add cpu number parameter to __cpufreq_driver_getavg()
  [CPUFREQ] use deferrable delayed work init in conservative governor
  [CPUFREQ] drivers/cpufreq/cpufreq.c: Adjust error handling code involving cpufreq_cpu_put
  [CPUFREQ] add error handling for cpufreq_register_governor() error
  [CPUFREQ] acpi-cpufreq: add error handling for cpufreq_register_driver() error
  [CPUFREQ] Coding style fixes to arch/x86/kernel/cpu/cpufreq/powernow-k6.c
  [CPUFREQ] Coding style fixes to arch/x86/kernel/cpu/cpufreq/elanfreq.c

13 years agoMerge branch 'rcu-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 10 Oct 2008 20:10:51 +0000 (13:10 -0700)]
Merge branch 'rcu-v28-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'rcu-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (21 commits)
  rcu: RCU-based detection of stalled CPUs for Classic RCU, fix
  rcu: RCU-based detection of stalled CPUs for Classic RCU
  rcu: add rcu_read_lock_sched() / rcu_read_unlock_sched()
  rcu: fix sparse shadowed variable warning
  doc/RCU: fix pseudocode in rcuref.txt
  rcuclassic: fix compiler warning
  rcu: use irq-safe locks
  rcuclassic: fix compilation NG
  rcu: fix locking cleanup fallout
  rcu: remove redundant ACCESS_ONCE definition from rcupreempt.c
  rcu: fix classic RCU locking cleanup lockdep problem
  rcu: trace fix possible mem-leak
  rcu: just rename call_rcu_bh instead of making it a macro
  rcu: remove list_for_each_rcu()
  rcu: fixes to include/linux/rcupreempt.h
  rcu: classic RCU locking and memory-barrier cleanups
  rcu: prevent console flood when one CPU sees another AWOL via RCU
  rcu, debug: detect stalled grace periods, cleanups
  rcu, debug: detect stalled grace periods
  rcu classic: new algorithm for callbacks-processing(v2)
  ...

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Fri, 10 Oct 2008 19:44:43 +0000 (12:44 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  selinux: Fix an uninitialized variable BUG/panic in selinux_secattr_to_sid()
  selinux: use default proc sid on symlinks
  file capabilities: uninline cap_safe_nice
  Update selinux info in MAINTAINERS and Kconfig help text
  SELinux: add gitignore file for mdp script
  SELinux: add boundary support and thread context assignment
  securityfs: do not depend on CONFIG_SECURITY
  selinux: add support for installing a dummy policy (v2)
  security: add/fix security kernel-doc
  selinux: Unify for- and while-loop style
  selinux: conditional expression type validation was off-by-one
  smack: limit privilege by label
  SELinux: Fix a potentially uninitialised variable in SELinux hooks
  SELinux: trivial, remove unneeded local variable
  SELinux: Trivial minor fixes that change C null character style
  make selinux_write_opts() static

13 years agoMerge branch 'sched-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 10 Oct 2008 19:42:31 +0000 (12:42 -0700)]
Merge branch 'sched-v28-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (38 commits)
  sched debug: add name to sched_domain sysctl entries
  sched: sync wakeups vs avg_overlap
  sched: remove redundant code in cpu_cgroup_create()
  sched_rt.c: resch needed in rt_rq_enqueue() for the root rt_rq
  cpusets: scan_for_empty_cpusets(), cpuset doesn't seem to be so const
  sched: minor optimizations in wake_affine and select_task_rq_fair
  sched: maintain only task entities in cfs_rq->tasks list
  sched: fixup buddy selection
  sched: more sanity checks on the bandwidth settings
  sched: add some comments to the bandwidth code
  sched: fixlet for group load balance
  sched: rework wakeup preemption
  CFS scheduler: documentation about scheduling policies
  sched: clarify ifdef tangle
  sched: fix list traversal to use _rcu variant
  sched: turn off WAKEUP_OVERLAP
  sched: wakeup preempt when small overlap
  kernel/cpu.c: create a CPU_STARTING cpu_chain notifier
  kernel/cpu.c: Move the CPU_DYING notifiers
  sched: fix __load_balance_iterator() for cfq with only one task
  ...

13 years ago[S390] Fix checkstack for s390
Christian Borntraeger [Fri, 10 Oct 2008 19:33:30 +0000 (21:33 +0200)]
[S390] Fix checkstack for s390

With -march=z990 and later gcc can use the long displacement facility
insruction lay for stack register handling. This patch adopts checkstack
to catch lay in addition to ahi and aghi.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] fix initialization of stp
Martin Schwidefsky [Fri, 10 Oct 2008 19:33:29 +0000 (21:33 +0200)]
[S390] fix initialization of stp

chsc_sstpc returns -EIO on error and 0 on success but stp_reset checks
against 1 instead of 0. chsc_sstpc used to return 1 on success, one
call location has not been updated ..

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] 3215: Remove tasklet.
Heiko Carstens [Fri, 10 Oct 2008 19:33:28 +0000 (21:33 +0200)]
[S390] 3215: Remove tasklet.

The 3215 console irq handler used to schedule a tasklet. However the
console irq handler also gets called from the infamous cio_tpi()
function. Which in turn does something like

local_bh_disable()
[call console irq handler]
_local_bh_enable()

_local_bh_enable() prevents execution of softirqs, which is intended
within cio_tpi(). However there might be a new softirq pending because
irq handler scheduled a tasklet.
In order to prevent this behaviour we just get rid of the tasklet.
It's not doing much anyway.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] console flush on panic / reboot
Holger Smolinski [Fri, 10 Oct 2008 19:33:27 +0000 (21:33 +0200)]
[S390] console flush on panic / reboot

The s390 console drivers use the unblank callback of the console
structure to flush the console buffer. In case of a panic or a
reboot the CPU doing the callback can block on the console i/o.
The other CPUs in the system continue to work. For panic this is
not a good idea.

Replace the unblank callback with proper panic/reboot notifier.
These get called after all but one CPU have been stopped.

Signed-off-by: Holger Smolinski <Holger.Smolinski@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] introduce dirty bit for kvm live migration
Florian Funke [Fri, 10 Oct 2008 19:33:26 +0000 (21:33 +0200)]
[S390] introduce dirty bit for kvm live migration

This patch defines a dirty bit in the PGSTE that can be used to implement
dirty pages logging for KVM's live migration. The bit is set in the
ptep_rcp_copy function, which is called to save dirty and referenced information
from the storage key in the PGSTE. The bit can be tested and reset by KVM using
the kvm_s390_test_and_clear_page_dirty function that is introduced by this patch.

Acked-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Florian Funke <ffunke@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] Add ioctl support for EMC Symmetrix Subsystem Control I/O
Nigel Hislop [Fri, 10 Oct 2008 19:33:25 +0000 (21:33 +0200)]
[S390] Add ioctl support for EMC Symmetrix Subsystem Control I/O

EMC Symmetrix Subsystem Control I/O through CKD dasd requires a
specific parameter list sent to the array via a Perform Subsystem
Function CCW. The Symmetrix response is retrieved from the array
via a Read Subsystem Data CCW.

Signed-off-by: Nigel Hislop <hislop_nigel@emc.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] xpram: per device block request queues.
Martin Schwidefsky [Fri, 10 Oct 2008 19:33:24 +0000 (21:33 +0200)]
[S390] xpram: per device block request queues.

The xpram driver uses a single block device queue for all of its
devices so far. With recent kernels removing xpram module fails to
clean up all sysfs files. The next time the xpram module is loaded
you'll get warnings:

  WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x5e/0x64()
  sysfs: duplicate filename '35:0' can not be created
  Modules linked in: xpram(+) [last unloaded: xpram]

Followed by the usual WARN_ON output, followed by an error message
from kobject_add_internal, followed by a badness in genhd. Allocating
a block queue per device fixes this.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] dasd: fix message flood for unsolicited interrupts
Stefan Haberland [Fri, 10 Oct 2008 19:33:23 +0000 (21:33 +0200)]
[S390] dasd: fix message flood for unsolicited interrupts

In the unsolicited interupt handler fake IRBs from CIO have to be
ignored because there is nothing to do.
The function dump_sense should not be called if there is no sense
data available.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] Move private simple udelay function to arch/s390/lib/delay.c.
Heiko Carstens [Fri, 10 Oct 2008 19:33:22 +0000 (21:33 +0200)]
[S390] Move private simple udelay function to arch/s390/lib/delay.c.

Move cio's private simple udelay function to lib/delay.c and turn it
into something much more readable. So we have all implementations
at one place.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] dcssblk: add >2G DCSSs support and stacked contiguous DCSSs support.
Hongjie Yang [Fri, 10 Oct 2008 19:33:21 +0000 (21:33 +0200)]
[S390] dcssblk: add >2G DCSSs support and stacked contiguous DCSSs support.

The DCSS block device driver is modified to add >2G DCSSs support and
allow a DCSS block device to map to a set of contiguous DCSSs.  The
extmem code is also modified to use new Diagnose x'64' subcodes for
>2G DCSSs.

Signed-off-by: Hongjie Yang <hongjie@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] ptrace changes
Martin Schwidefsky [Fri, 10 Oct 2008 19:33:20 +0000 (21:33 +0200)]
[S390] ptrace changes

* System call parameter and result access functions
* Add tracehook calls
* Split syscall_trace into two functions do_syscall_trace_enter and
  do_syscall_trace_exit

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] s390: use sys_pause for 31bit pause entry point
Christoph Hellwig [Fri, 10 Oct 2008 19:33:19 +0000 (21:33 +0200)]
[S390] s390: use sys_pause for 31bit pause entry point

sys32_pause is a useless copy of the generic sys_pause.
(and it's certainly not there for old sparc32 binaries..)

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] qdio enhanced SIGA (iqdio) support.
Klaus-Dieter Wacker [Fri, 10 Oct 2008 19:33:18 +0000 (21:33 +0200)]
[S390] qdio enhanced SIGA (iqdio) support.

Add support for z10 HiperSockets multiwrite SBALs on output
queues. This is used on LPAR with EDDP enabled devices.

Signed-off-by: Klaus-Dieter Wacker <kdwacker@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] cio: fix cio_tpi.
Heiko Carstens [Fri, 10 Oct 2008 19:33:17 +0000 (21:33 +0200)]
[S390] cio: fix cio_tpi.

In cio_tpi only disable bottom halves when not in interrupt context.
Otherwise a WARN_ON gets triggered. Besides that, when we are in
interrupt context bottom halves are disabled anyway.
Fixes this one:

Badness at kernel/softirq.c:77
Modules linked in:
CPU: 2 Not tainted 2.6.26 #4
Process swapper (pid: 0, task: 000000003fe83db0, ksp: 000000003fea7d28)
Krnl PSW : 0404c00180000000 0000000000053f4e (__local_bh_disable+0xbe/0xcc)
           R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA:3
Krnl GPRS: 0000000000008ee0 00000000005f95e0 0000000000000000 0000000000000001
           000000000020be92 0000000000000000 0000000000000210 00000000005d36c0
           000000003fb5f4d8 0000000000000000 000000000020bed0 000000003fb5f3c8
           00000000009be920 0000000000364898 000000003fb5f408 000000003fb5f3c8
Krnl Code: 0000000000053f42bf2f1000           icm     %r2,15,0(%r1)
           0000000000053f46a774ffc5           brc     7,53ed0
           0000000000053f4aa7f40001           brc     15,53f4c
          >0000000000053f4ea7280001           lhi     %r2,1
           0000000000053f5250201000           st      %r2,0(%r1)
           0000000000053f56a7f4ffbd           brc     15,53ed0
           0000000000053f5a: 0707               bcr     0,%r7
           0000000000053f5ca7f13fc0           tmll    %r15,16320
Call Trace:
([<0000000000000210>] 0x210)
 [<0000000000053f86>] local_bh_disable+0x2a/0x38
 [<000000000020bed0>] wait_cons_dev+0xd4/0x154
 [<0000000000247cb2>] raw3215_make_room+0x6a/0x1a8
 [<000000000024861a>] raw3215_write+0x86/0x28c
 [<00000000002488a0>] con3215_write+0x80/0x110
 [<000000000004c3e0>] __call_console_drivers+0xc8/0xe4
 [<000000000004c47e>] _call_console_drivers+0x82/0xc4
 [<000000000004c744>] release_console_sem+0x218/0x2c0
 [<000000000004cf64>] vprintk+0x3c0/0x504
 [<0000000000354a4a>] printk+0x52/0x64
 [<0000000000088004>] __print_symbol+0x40/0x50
 [<0000000000071dbc>] print_stack_trace+0x78/0xac
 [<0000000000079e78>] print_lock_dependencies+0x148/0x208
 [<000000000007a050>] print_irq_inversion_bug+0x118/0x15c
 [<000000000007a106>] check_usage_forwards+0x72/0x84
 [<000000000007a36e>] mark_lock+0x1d2/0x594
 [<000000000007baca>] __lock_acquire+0x886/0xf48
 [<000000000007c234>] lock_acquire+0xa8/0xe0
 [<0000000000350316>] _write_lock+0x56/0x98
 [<000000000026cd92>] zfcp_erp_adapter_reopen+0x4e/0x8c
 [<000000000026f1e8>] zfcp_qdio_int_resp+0x2e4/0x2f4
 [<00000000002210f4>] qdio_int_handler+0x274/0x888
 [<00000000002177b6>] ccw_device_call_handler+0x6e/0xd8
 [<0000000000215336>] ccw_device_irq+0xd6/0x160
 [<0000000000212f88>] io_subchannel_irq+0x8c/0x118
 [<000000000020c120>] do_IRQ+0x1d0/0x1fc
 [<00000000000270b2>] io_return+0x0/0x8
 [<000000000001c8a4>] cpu_idle+0x178/0x21c
([<000000000001c884>] cpu_idle+0x158/0x21c)
 [<00000000003483a2>] start_secondary+0xb6/0xc8
INFO: lockdep is turned off.
Last Breaking-Event-Address:
 [<0000000000053f4a>] __local_bh_disable+0xba/0xcc

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] cio: Correct use of ! and &
Julia Lawall [Fri, 10 Oct 2008 19:33:16 +0000 (21:33 +0200)]
[S390] cio: Correct use of ! and &

In commit e6bafba5b4765a5a252f1b8d31cbf6d2459da337, a bug was fixed that
involved converting !x & y to !(x & y).  The code below shows the same
pattern, and thus should perhaps be fixed in the same way.  In particular,
the result of !scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND is
always just !scsw_stctl(&request->irb.scsw).

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@ expression E; constant C; @@
(
  !E & !C
|
- !E & C
+ !(E & C)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] cio: inline assembly cleanup
Peter Oberparleiter [Fri, 10 Oct 2008 19:33:15 +0000 (21:33 +0200)]
[S390] cio: inline assembly cleanup

Fix incorrect in- and output constraints, remove volatile declaration
of inline assembly parameters and reformat constraint declarations to
be more consistent.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] bus_id -> dev_set_name() for css and ccw busses
Cornelia Huck [Fri, 10 Oct 2008 19:33:14 +0000 (21:33 +0200)]
[S390] bus_id -> dev_set_name() for css and ccw busses

Convert remaining s390 users setting bus_id to dev_set_name()
or init_name.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] bus_id ->dev_name() conversions in qdio
Martin Schwidefsky [Fri, 10 Oct 2008 19:33:13 +0000 (21:33 +0200)]
[S390] bus_id ->dev_name() conversions in qdio

Use dev_name() in the new qdio driver.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] Use s390_root_dev_* in kvm_virtio.
Cornelia Huck [Fri, 10 Oct 2008 19:33:12 +0000 (21:33 +0200)]
[S390] Use s390_root_dev_* in kvm_virtio.

No need to define a static device for the kvm_s390 root device,
just use s390_root_dev_register().

This is needed for the bus_id rework

Acked-by: Carsten Otte <cotte@de.ibm.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] more bus_id -> dev_name conversions
Cornelia Huck [Fri, 10 Oct 2008 19:33:11 +0000 (21:33 +0200)]
[S390] more bus_id -> dev_name conversions

Some further bus_id -> dev_name() conversions in s390 code.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] bus_id -> dev_set_name() changes
Cornelia Huck [Fri, 10 Oct 2008 19:33:10 +0000 (21:33 +0200)]
[S390] bus_id -> dev_set_name() changes

Convert most s390 users setting bus_id to dev_set_name().
css and ccw busses are deferred since they need some special
treatment.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] bus_id -> dev_name conversions
Kay Sievers [Fri, 10 Oct 2008 19:33:09 +0000 (21:33 +0200)]
[S390] bus_id -> dev_name conversions

bus_id -> dev_name() conversions in s390 code.

[cornelia.huck@de.ibm.com: minor adaptions]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] cio: Exorcise cio_msg= from documentation.
Cornelia Huck [Fri, 10 Oct 2008 19:33:08 +0000 (21:33 +0200)]
[S390] cio: Exorcise cio_msg= from documentation.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] cio: Update cio_ignore documentation.
Cornelia Huck [Fri, 10 Oct 2008 19:33:07 +0000 (21:33 +0200)]
[S390] cio: Update cio_ignore documentation.

Add documentation for the new "purge" cio_ignore parameter.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] cio: introduce purge function for /proc/cio_ignore
Peter Oberparleiter [Fri, 10 Oct 2008 19:33:06 +0000 (21:33 +0200)]
[S390] cio: introduce purge function for /proc/cio_ignore

Allow users to remove blacklisted ccw devices by using the
/proc/cio_ignore interface:

  echo purge > /proc/cio_ignore

will remove all devices which are offline and blacklisted.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] cio: move device unregistration to dedicated work queue
Peter Oberparleiter [Fri, 10 Oct 2008 19:33:05 +0000 (21:33 +0200)]
[S390] cio: move device unregistration to dedicated work queue

Use dedicated slow path work queue when unregistering a device due to
a user action. This ensures serialialization of other register/
unregister requests.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] qdio: speed up multicast traffic on full HiperSocket queue
Ursula Braun [Fri, 10 Oct 2008 19:33:04 +0000 (21:33 +0200)]
[S390] qdio: speed up multicast traffic on full HiperSocket queue

If an asynchronous HiperSockets queue runs full, no further packet
can be sent. In this case the next initiative to give transmitted
skbs back to the stack is triggered only by a 10-seconds qdio timer.
This timer has been introduced for low multicast traffic scenarios
to guarantee freeing of skbs in a limited amount of time. For high
HiperSocket multicast traffic scenarios progress checking on the
outbound queue should be enforced by tasklet rescheduling.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Fri, 10 Oct 2008 18:20:42 +0000 (11:20 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: skcipher - Use RNG interface instead of get_random_bytes
  crypto: rng - RNG interface and implementation
  crypto: api - Add fips_enable flag
  crypto: skcipher - Move IV generators into their own modules
  crypto: cryptomgr - Test ciphers using ECB
  crypto: api - Use test infrastructure
  crypto: cryptomgr - Add test infrastructure
  crypto: tcrypt - Add alg_test interface
  crypto: tcrypt - Abort and only log if there is an error
  crypto: crc32c - Use Intel CRC32 instruction
  crypto: tcrypt - Avoid using contiguous pages
  crypto: api - Display larval objects properly
  crypto: api - Export crypto_alg_lookup instead of __crypto_alg_lookup
  crypto: Kconfig - Replace leading spaces with tabs

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Fri, 10 Oct 2008 18:16:33 +0000 (11:16 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (29 commits)
  RDMA/nes: Fix slab corruption
  IB/mlx4: Set RLKEY bit for kernel QPs
  RDMA/nes: Correct error_module bit mask
  RDMA/nes: Fix routed RDMA connections
  RDMA/nes: Enhanced PFT management scheme
  RDMA/nes: Handle AE bounds violation
  RDMA/nes: Limit critical error interrupts
  RDMA/nes: Stop spurious MAC interrupts
  RDMA/nes: Correct tso_wqe_length
  RDMA/nes: Fill in firmware version for ethtool
  RDMA/nes: Use ethtool timer value
  RDMA/nes: Correct MAX TSO frags value
  RDMA/nes: Enable MC/UC after changing MTU
  RDMA/nes: Free NIC TX buffers when destroying NIC QP
  RDMA/nes: Fix MDC setting
  RDMA/nes: Add wqm_quanta module option
  RDMA/nes: Module parameter permissions
  RDMA/cxgb3: Set active_mtu in ib_port_attr
  RDMA/nes: Add support for 4-port 1G HP blade card
  RDMA/nes: Make mini_cm_connect() static
  ...

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm
Linus Torvalds [Fri, 10 Oct 2008 18:13:55 +0000 (11:13 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/teigland/dlm

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
  dlm: choose better identifiers
  dlm: remove bkl
  dlm: fix address compare
  dlm: fix locking of lockspace list in dlm_scand
  dlm: detect available userspace daemon
  dlm: allow multiple lockspace creates

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm
Linus Torvalds [Fri, 10 Oct 2008 18:11:47 +0000 (11:11 -0700)]
Merge git://git./linux/kernel/git/agk/linux-2.6-dm

* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
  dm: detect lost queue
  dm: publish dm_vcalloc
  dm: publish dm_table_unplug_all
  dm: publish dm_get_mapinfo
  dm: export struct dm_dev
  dm crypt: avoid unnecessary wait when splitting bio
  dm crypt: tidy ctx pending
  dm crypt: fix async inc_pending
  dm crypt: move dec_pending on error into write_io_submit
  dm crypt: remove inc_pending from write_io_submit
  dm crypt: tidy write loop pending
  dm crypt: tidy crypt alloc
  dm crypt: tidy inc pending
  dm exception store: use chunk_t for_areas
  dm exception store: introduce area_location function
  dm raid1: kcopyd should stop on error if errors handled
  dm mpath: remove is_active from struct dm_path
  dm mpath: use more error codes

Fixed up trivial conflict in drivers/md/dm-mpath.c manually.

13 years agoFix barrier fail detection in XFS
Christoph Hellwig [Fri, 10 Oct 2008 06:28:29 +0000 (17:28 +1100)]
Fix barrier fail detection in XFS

Currently we disable barriers as soon as we get a buffer in xlog_iodone
that has the XBF_ORDERED flag cleared.  But this can be the case not only
for buffers where the barrier failed, but also the first buffer of a
split log write in case of a log wraparound.  Due to the disabled
barriers we can easily get directory corruption on unclean shutdowns.
So instead of using this check add a new buffer flag for failed barrier
writes.

This is a regression vs 2.6.26 caused by patch to use the right macro
to check for the ORDERED flag, as we previously got true returned for
every buffer.

Thanks to Toei Rei for reporting the bug.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: David Chinner <david@fromorbit.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw
Linus Torvalds [Fri, 10 Oct 2008 18:02:22 +0000 (11:02 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-nmw

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw:
  GFS2: Support for I/O barriers
  GFS2: Add UUID to GFS2 sb
  GFS2: high time to take some time over atime
  GFS2: The war on bloat
  GFS2: GFS2 will panic if you misspell any mount options
  GFS2: Direct IO write at end of file error
  GFS2: Use an IS_ERR test rather than a NULL test
  GFS2: Fix race relating to glock min-hold time
  GFS2: Fix & clean up GFS2 rename
  GFS2: rm on multiple nodes causes panic
  GFS2: Fix metafs mounts
  GFS2: Fix debugfs glock file iterator

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
Linus Torvalds [Fri, 10 Oct 2008 17:53:26 +0000 (10:53 -0700)]
Merge git://git./linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (37 commits)
  [SCSI] zfcp: fix double dbf id usage
  [SCSI] zfcp: wait on SCSI work to be finished before proceeding with init dev
  [SCSI] zfcp: fix erp list usage without using locks
  [SCSI] zfcp: prevent fc_remote_port_delete calls for unregistered rport
  [SCSI] zfcp: fix deadlock caused by shared work queue tasks
  [SCSI] zfcp: put threshold data in hba trace
  [SCSI] zfcp: Simplify zfcp data structures
  [SCSI] zfcp: Simplify get_adapter_by_busid
  [SCSI] zfcp: remove all typedefs and replace them with standards
  [SCSI] zfcp: attach and release SAN nameserver port on demand
  [SCSI] zfcp: remove unused references, declarations and flags
  [SCSI] zfcp: Update message with input from review
  [SCSI] zfcp: add queue_full sysfs attribute
  [SCSI] scsi_dh: suppress comparison warning
  [SCSI] scsi_dh: add Dell product information into rdac device handler
  [SCSI] qla2xxx: remove the unused SCSI_QLOGIC_FC_FIRMWARE option
  [SCSI] qla2xxx: fix printk format warnings
  [SCSI] qla2xxx: Update version number to 8.02.01-k8.
  [SCSI] qla2xxx: Ignore payload reserved-bits during RSCN processing.
  [SCSI] qla2xxx: Additional residual-count corrections during UNDERRUN handling.
  ...

13 years agoMerge branch 'for-2.6.28' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Fri, 10 Oct 2008 17:52:45 +0000 (10:52 -0700)]
Merge branch 'for-2.6.28' of git://git.kernel.dk/linux-2.6-block

* 'for-2.6.28' of git://git.kernel.dk/linux-2.6-block: (132 commits)
  doc/cdrom: Trvial documentation error, file not present
  block_dev: fix kernel-doc in new functions
  block: add some comments around the bio read-write flags
  block: mark bio_split_pool static
  block: Find bio sector offset given idx and offset
  block: gendisk integrity wrapper
  block: Switch blk_integrity_compare from bdev to gendisk
  block: Fix double put in blk_integrity_unregister
  block: Introduce integrity data ownership flag
  block: revert part of d7533ad0e132f92e75c1b2eb7c26387b25a583c1
  bio.h: Remove unused conditional code
  block: remove end_{queued|dequeued}_request()
  block: change elevator to use __blk_end_request()
  gdrom: change to use __blk_end_request()
  memstick: change to use __blk_end_request()
  virtio_blk: change to use __blk_end_request()
  blktrace: use BLKTRACE_BDEV_SIZE as the name size for setup structure
  block: add lld busy state exporting interface
  block: Fix blk_start_queueing() to not kick a stopped queue
  include blktrace_api.h in headers_install
  ...

13 years agoMerge phase #1 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
Linus Torvalds [Fri, 10 Oct 2008 15:07:53 +0000 (08:07 -0700)]
Merge phase #1 of git://git./linux/kernel/git/tip/linux-2.6-tip

This merges phase 1 of the x86 tree, which is a collection of branches:

  x86/alternatives, x86/cleanups, x86/commandline, x86/crashdump,
  x86/debug, x86/defconfig, x86/doc, x86/exports, x86/fpu, x86/gart,
  x86/idle, x86/mm, x86/mtrr, x86/nmi-watchdog, x86/oprofile,
  x86/paravirt, x86/reboot, x86/sparse-fixes, x86/tsc, x86/urgent and
  x86/vmalloc

and as Ingo says: "these are the easiest, purely independent x86 topics
with no conflicts, in one nice Octopus merge".

* 'x86-v28-for-linus-phase1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (147 commits)
  x86: mtrr_cleanup: treat WRPROT as UNCACHEABLE
  x86: mtrr_cleanup: first 1M may be covered in var mtrrs
  x86: mtrr_cleanup: print out correct type v2
  x86: trivial printk fix in efi.c
  x86, debug: mtrr_cleanup print out var mtrr before change it
  x86: mtrr_cleanup try gran_size to less than 1M, v3
  x86: mtrr_cleanup try gran_size to less than 1M, cleanup
  x86: change MTRR_SANITIZER to def_bool y
  x86, debug printouts: IOMMU setup failures should not be KERN_ERR
  x86: export set_memory_ro and set_memory_rw
  x86: mtrr_cleanup try gran_size to less than 1M
  x86: mtrr_cleanup prepare to make gran_size to less 1M
  x86: mtrr_cleanup safe to get more spare regs now
  x86_64: be less annoying on boot, v2
  x86: mtrr_cleanup hole size should be less than half of chunk_size, v2
  x86: add mtrr_cleanup_debug command line
  x86: mtrr_cleanup optimization, v2
  x86: don't need to go to chunksize to 4G
  x86_64: be less annoying on boot
  x86, olpc: fix endian bug in openfirmware workaround
  ...

13 years agoPnP: move pnpacpi/pnpbios_init to after PCI init
Linus Torvalds [Fri, 10 Oct 2008 15:00:17 +0000 (08:00 -0700)]
PnP: move pnpacpi/pnpbios_init to after PCI init

We already did that a long time ago for pnp_system_init, but
pnpacpi_init and pnpbios_init remained as subsys_initcalls, and get
linked into the kernel before the arch-specific routines that finalize
the PCI resources (pci_subsys_init).

This means that the PnP routines would either register their resources
before the PCI layer could, or would be unable to check whether a PCI
resource had already been registered.  Both are problematic.

I wanted to do this before 2.6.27, but every time we change something
like this, something breaks.  That said, _every_ single time we trust
some firmware (like PnP tables) more than we trust the hardware itself
(like PCI probing), the problems have been worse.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'upstream-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarz...
Linus Torvalds [Fri, 10 Oct 2008 14:46:45 +0000 (07:46 -0700)]
Merge branch 'upstream-2.6.28' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ata_piix: IDE Mode SATA patch for Intel Ibex Peak DeviceIDs
  libata-eh: clear UNIT ATTENTION after reset
  ata_piix: add Hercules EC-900 mini-notebook to ich_laptop short cable list
  libata: reorder ata_device to remove 8 bytes of padding on 64 bits
  [libata] pata_bf54x: Add proper PM operation
  pata_sil680: convert CONFIG_PPC_MERGE to CONFIG_PPC
  libata: Implement disk shock protection support
  [libata] Introduce ata_id_has_unload()
  PATA: RPC now selects HAVE_PATA_PLATFORM for pata platform driver
  ata_piix: drop merged SCR access and use slave_link instead
  libata: implement slave_link
  libata: misc updates to prepare for slave link
  libata: reimplement link iterator
  libata: make SCR access ops per-link

13 years agodm: detect lost queue
Alasdair G Kergon [Fri, 10 Oct 2008 12:37:13 +0000 (13:37 +0100)]
dm: detect lost queue

Detect and report buggy drivers that destroy their request_queue.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: Stefan Raspl <raspl@linux.vnet.ibm.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
13 years agodm: publish dm_vcalloc
Mikulas Patocka [Fri, 10 Oct 2008 12:37:12 +0000 (13:37 +0100)]
dm: publish dm_vcalloc

Publish dm_vcalloc in include/linux/device-mapper.h because this function is
used by targets.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm: publish dm_table_unplug_all
Mikulas Patocka [Fri, 10 Oct 2008 12:37:11 +0000 (13:37 +0100)]
dm: publish dm_table_unplug_all

Publish dm_table_unplug_all in include/linux/device-mapper.h because this
function is used by targets.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm: publish dm_get_mapinfo
Mikulas Patocka [Fri, 10 Oct 2008 12:37:10 +0000 (13:37 +0100)]
dm: publish dm_get_mapinfo

Publish dm_get_mapinfo in include/linux/device-mapper.h because this function
is used by targets.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm: export struct dm_dev
Mikulas Patocka [Fri, 10 Oct 2008 12:37:09 +0000 (13:37 +0100)]
dm: export struct dm_dev

Split struct dm_dev in two and publish the part that other targets need in
include/linux/device-mapper.h.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm crypt: avoid unnecessary wait when splitting bio
Milan Broz [Fri, 10 Oct 2008 12:37:08 +0000 (13:37 +0100)]
dm crypt: avoid unnecessary wait when splitting bio

Don't wait between submitting crypt requests for a bio unless
we are short of memory.

There are two situations when we must split an encrypted bio:
  1) there are no free pages;
  2) the new bio would violate underlying device restrictions
(e.g. max hw segments).

In case (2) we do not need to wait.

Add output variable to crypt_alloc_buffer() to distinguish between
these cases.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm crypt: tidy ctx pending
Milan Broz [Fri, 10 Oct 2008 12:37:08 +0000 (13:37 +0100)]
dm crypt: tidy ctx pending

Move the initialisation of ctx->pending into one place, at the
start of crypt_convert().

Introduce crypt_finished to indicate whether or not the encryption
is finished, for use in a later patch.

No functional change.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm crypt: fix async inc_pending
Milan Broz [Fri, 10 Oct 2008 12:37:07 +0000 (13:37 +0100)]
dm crypt: fix async inc_pending

The pending reference count must be incremented *before* the async work is
queued to another thread, not after.  Otherwise there's a race if the
work completes and decrements the reference count before it gets incremented.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm crypt: move dec_pending on error into write_io_submit
Milan Broz [Fri, 10 Oct 2008 12:37:06 +0000 (13:37 +0100)]
dm crypt: move dec_pending on error into write_io_submit

Make kcryptd_crypt_write_io_submit() responsible for decrementing
the pending count after an error.

Also fixes a bug in the async path that forgot to decrement it.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm crypt: remove inc_pending from write_io_submit
Alasdair G Kergon [Fri, 10 Oct 2008 12:37:05 +0000 (13:37 +0100)]
dm crypt: remove inc_pending from write_io_submit

Make the caller reponsible for incrementing the pending count before calling
kcryptd_crypt_write_io_submit() in the non-async case to bring it into line
with the async case.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm crypt: tidy write loop pending
Milan Broz [Fri, 10 Oct 2008 12:37:04 +0000 (13:37 +0100)]
dm crypt: tidy write loop pending

Move kcryptd_crypt_write_convert_loop inside kcryptd_crypt_write_convert.
This change is needed for a later patch.

No functional change.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm crypt: tidy crypt alloc
Milan Broz [Fri, 10 Oct 2008 12:37:03 +0000 (13:37 +0100)]
dm crypt: tidy crypt alloc

Factor out crypt io allocation code.
Later patches will call it from another place.

No functional change.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm crypt: tidy inc pending
Milan Broz [Fri, 10 Oct 2008 12:37:02 +0000 (13:37 +0100)]
dm crypt: tidy inc pending

Move io pending to one place.

No functional change, usefull to simplify debugging.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm exception store: use chunk_t for_areas
Mikulas Patocka [Fri, 10 Oct 2008 12:37:01 +0000 (13:37 +0100)]
dm exception store: use chunk_t for_areas

Change uint32_t into chunk_t to remove 32-bit limitation on the
number of chunks on systems with 64-bit sector numbers.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm exception store: introduce area_location function
Mikulas Patocka [Fri, 10 Oct 2008 12:37:00 +0000 (13:37 +0100)]
dm exception store: introduce area_location function

Move this logic to a function, because it will be reused later.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm raid1: kcopyd should stop on error if errors handled
Jonathan Brassow [Fri, 10 Oct 2008 12:36:59 +0000 (13:36 +0100)]
dm raid1: kcopyd should stop on error if errors handled

dm-raid1 is setting the 'DM_KCOPYD_IGNORE_ERROR' flag unconditionally
when assigning kcopyd work.  kcopyd is responsible for copying an
assigned section of disk to one or more other disks.  The
'DM_KCOPYD_IGNORE_ERROR' flag affects kcopyd in the following way:

When not set:
kcopyd will immediately stop the copy operation when an error is
encountered.

When set:
kcopyd will try to proceed regardless of errors and try to continue
copying any remaining amount.

Since dm-raid1 tracks regions of the address space that are (or
are not) in sync and it now has the ability to handle these
errors, we can safely enable this optimization.  This optimization
is conditional on whether mirror error handling has been enabled.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodm mpath: remove is_active from struct dm_path
Kiyoshi Ueda [Fri, 10 Oct 2008 12:36:58 +0000 (13:36 +0100)]
dm mpath: remove is_active from struct dm_path

This patch moves 'is_active' from struct dm_path to struct pgpath
as it does not need exporting.

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>
13 years agodm mpath: use more error codes
Benjamin Marzinski [Fri, 10 Oct 2008 12:36:57 +0000 (13:36 +0100)]
dm mpath: use more error codes

This patch allows path errors from the multipath ctr function to
propagate up to userspace as errno values from the ioctl() call.

This is in response to
  https://www.redhat.com/archives/dm-devel/2008-May/msg00000.html
and
  https://bugzilla.redhat.com/show_bug.cgi?id=444421

The patch only lets through the errors that it needs to in order to
get the path errors from parse_path().

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
13 years agodoc/cdrom: Trvial documentation error, file not present
Randy Dunlap [Fri, 10 Oct 2008 06:22:44 +0000 (08:22 +0200)]
doc/cdrom: Trvial documentation error, file not present

The sbpcd tester program is not included in the kernel source tree,
so remove the reference to it.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Reported-by: Nick Warne <nick@ukfsn.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
13 years agoMerge branches 'cma', 'cxgb3', 'ehca', 'ipath', 'ipoib', 'mad', 'misc', 'mlx4', ...
Roland Dreier [Fri, 10 Oct 2008 00:41:15 +0000 (17:41 -0700)]
Merge branches 'cma', 'cxgb3', 'ehca', 'ipath', 'ipoib', 'mad', 'misc', 'mlx4', 'mthca' and 'nes' into for-next

13 years agoRDMA/nes: Fix slab corruption
Chien Tung [Fri, 10 Oct 2008 00:41:05 +0000 (17:41 -0700)]
RDMA/nes: Fix slab corruption

Referencing cm_node after it is freed via rem_ref_cm_node() causes a
slab corruption.  There is no need to set cm_node->cm_id to NULL in
mini_cm_close().

Signed-off-by: Chien Tung <ctung@neteffect.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
13 years agoMerge branch 'next' into for-linus
James Morris [Fri, 10 Oct 2008 00:09:47 +0000 (11:09 +1100)]
Merge branch 'next' into for-linus

13 years agoLinux 2.6.27
Linus Torvalds [Thu, 9 Oct 2008 22:13:53 +0000 (15:13 -0700)]
Linux 2.6.27

13 years agoDon't allow splice() to files opened with O_APPEND
Linus Torvalds [Thu, 9 Oct 2008 21:04:54 +0000 (14:04 -0700)]
Don't allow splice() to files opened with O_APPEND

This is debatable, but while we're debating it, let's disallow the
combination of splice and an O_APPEND destination.

It's not entirely clear what the semantics of O_APPEND should be, and
POSIX apparently expects pwrite() to ignore O_APPEND, for example.  So
we could make up any semantics we want, including the old ones.

But Miklos convinced me that we should at least give it some thought,
and that accepting writes at arbitrary offsets is wrong at least for
IS_APPEND() files (which always have O_APPEND set, even if the reverse
isn't true: you can obviously have O_APPEND set on a regular file).

So disallow O_APPEND entirely for now.  I doubt anybody cares, and this
way we have one less gray area to worry about.

Reported-and-argued-for-by: Miklos Szeredi <miklos@szeredi.hu>
Acked-by: Jens Axboe <ens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
Linus Torvalds [Thu, 9 Oct 2008 19:23:54 +0000 (12:23 -0700)]
Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  hwmon: (abituguru3) Enable DMI probing feature on Abit AT8 32X
  hwmon: (abituguru3) Enable reading from AUX3 fan on Abit AT8 32X
  hwmon: (adt7473) Fix some bogosity in documentation file
  hwmon: Define sysfs interface for energy consumption register
  hwmon: (it87) Prevent power-off on Shuttle SN68PT
  eeepc-laptop: Fix hwmon interface

13 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
Linus Torvalds [Thu, 9 Oct 2008 19:23:35 +0000 (12:23 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/davej/cpufreq

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] correct broken links and email addresses

13 years agoSLOB: fix bogus ksize calculation fix
Matt Mackall [Wed, 8 Oct 2008 19:51:57 +0000 (14:51 -0500)]
SLOB: fix bogus ksize calculation fix

This fixes the previous fix, which was completely wrong on closer
inspection. This version has been manually tested with a user-space
test harness and generates sane values. A nearly identical patch has
been boot-tested.

The problem arose from changing how kmalloc/kfree handled alignment
padding without updating ksize to match. This brings it in sync.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years ago[CPUFREQ] Fix BUG: using smp_processor_id() in preemptible code
Andrea Righi [Thu, 18 Sep 2008 10:43:40 +0000 (10:43 +0000)]
[CPUFREQ] Fix BUG: using smp_processor_id() in preemptible code

Use get_cpu()/put_cpu() in cpufreq_ondemand init routine, instead of
smp_processor_id() to avoid the following BUG:

[   35.313118] BUG: using smp_processor_id() in preemptible [00000000] code=: modprobe/4952
[   35.313132] caller is cpufreq_gov_dbs_init+0xa/0x8f [cpufreq_ondemand]
[   35.313140] Pid: 4952, comm: modprobe Not tainted 2.6.27-rc5-mm1 #23
[   35.313145] Call Trace:
[   35.313158]  [<ffffffff80361ff7>] debug_smp_processor_id+0xd7/0xe0
[   35.313167]  [<ffffffffa010800a>] cpufreq_gov_dbs_init+0xa/0x8f [cpufreq_ondemand]
[   35.313176]  [<ffffffff8020903b>] _stext+0x3b/0x160
[   35.313185]  [<ffffffff804768c5>] __mutex_unlock_slowpath+0xe5/0x190
[   35.313195]  [<ffffffff8026236a>] trace_hardirqs_on_caller+0xca/0x140
[   35.313205]  [<ffffffff8026ef4c>] sys_init_module+0xdc/0x210
[   35.313212]  [<ffffffff8020b7cb>] system_call_fastpath+0x16/0x1b

Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] Don't export governors for default governor
Sven Wegener [Sat, 20 Sep 2008 14:50:08 +0000 (16:50 +0200)]
[CPUFREQ] Don't export governors for default governor

We don't need to export the governors for use as the default governor,
because the default governor will be built-in anyway and we can access
the symbol directly.

This also fixes the following sparse warnings:

drivers/cpufreq/cpufreq_conservative.c:578:25: warning: symbol 'cpufreq_gov_conservative' was not declared. Should it be static?
drivers/cpufreq/cpufreq_ondemand.c:582:25: warning: symbol 'cpufreq_gov_ondemand' was not declared. Should it be static?
drivers/cpufreq/cpufreq_performance.c:39:25: warning: symbol 'cpufreq_gov_performance' was not declared. Should it be static?
drivers/cpufreq/cpufreq_powersave.c:38:25: warning: symbol 'cpufreq_gov_powersave' was not declared. Should it be static?
drivers/cpufreq/cpufreq_userspace.c:190:25: warning: symbol 'cpufreq_gov_userspace' was not declared. Should it be static?

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ][6/6] cpufreq: Add idle microaccounting in ondemand governor
venkatesh.pallipadi@intel.com [Mon, 4 Aug 2008 18:59:12 +0000 (11:59 -0700)]
[CPUFREQ][6/6] cpufreq: Add idle microaccounting in ondemand governor

Use get_cpu_idle_time_us() to get micro-accounted idle information.
This enables ondemand to get more accurate idle and busy timings
than the jiffy based calculation. As a result, we can decrease
the ondemand safety gaurd band from 80-10 to 95-3.

Results in more aggressive power savings.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ][5/6] cpufreq: Changes to get_cpu_idle_time_us(), used by ondemand governor
venkatesh.pallipadi@intel.com [Mon, 4 Aug 2008 18:59:11 +0000 (11:59 -0700)]
[CPUFREQ][5/6] cpufreq: Changes to get_cpu_idle_time_us(), used by ondemand governor

export get_cpu_idle_time_us() for it to be used in ondemand governor.
Last update time can be current time when the CPU is currently non-idle,
accounting for the busy time since last idle.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ][4/6] cpufreq_ondemand: Parameterize down differential
venkatesh.pallipadi@intel.com [Mon, 4 Aug 2008 18:59:10 +0000 (11:59 -0700)]
[CPUFREQ][4/6] cpufreq_ondemand: Parameterize down differential

Use a parameter for down differential, instead of hardcoded 10%. Follow-on
patch changes the down-differential dynamically, based on whether
we are using idle micro-accounting or not.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ][3/6] cpufreq: get_cpu_idle_time() changes in ondemand for idle-microaccounting
venkatesh.pallipadi@intel.com [Mon, 4 Aug 2008 18:59:09 +0000 (11:59 -0700)]
[CPUFREQ][3/6] cpufreq: get_cpu_idle_time() changes in ondemand for idle-microaccounting

Preparatory changes for doing idle micro-accounting in ondemand governor.
get_cpu_idle_time() gets extra parameter and returns idle time and also the
wall time that corresponds to the idle time measurement.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ][2/6] cpufreq: Change load calculation in ondemand for software coordination
venkatesh.pallipadi@intel.com [Mon, 4 Aug 2008 18:59:08 +0000 (11:59 -0700)]
[CPUFREQ][2/6] cpufreq: Change load calculation in ondemand for software coordination

Change the load calculation algorithm in ondemand to work well with software
coordination of frequency across the dependent cpus.

Multiply individual CPU utilization with the average freq of that logical CPU
during the measurement interval (using getavg call). And find the max CPU
utilization number in terms of CPU freq. That number is then used to
get to the target freq for next sampling interval.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ][1/6] cpufreq: Add cpu number parameter to __cpufreq_driver_getavg()
venkatesh.pallipadi@intel.com [Mon, 4 Aug 2008 18:59:07 +0000 (11:59 -0700)]
[CPUFREQ][1/6] cpufreq: Add cpu number parameter to __cpufreq_driver_getavg()

Add a cpu parameter to __cpufreq_driver_getavg(). This is needed for software
cpufreq coordination where policy->cpu may not be same as the CPU on which we
want to getavg frequency.

A follow-on patch will use this parameter to getavg freq from all cpus
in policy->cpus.

Change since last patch. Fix the offline/online and suspend/resume
oops reported by Youquan Song <youquan.song@intel.com>

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] use deferrable delayed work init in conservative governor
Ben Slusky [Mon, 7 Jul 2008 17:16:20 +0000 (13:16 -0400)]
[CPUFREQ] use deferrable delayed work init in conservative governor

Venki Pallipadi made a similar change to the ondemand governor a while
back (in commit 28287033e12463c8ff89f1ea8038783d0360391c). It seems to
work just as well in the conservative governor, leading to fewer wakeups
as reported by powertop.

Signed-off-by: Ben Slusky <sluskyb@paranoiacs.org>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] drivers/cpufreq/cpufreq.c: Adjust error handling code involving cpufreq_cpu_put
Julia Lawall [Fri, 25 Jul 2008 20:44:53 +0000 (22:44 +0200)]
[CPUFREQ] drivers/cpufreq/cpufreq.c: Adjust error handling code involving cpufreq_cpu_put

After calling cpufreq_cpu_get, error handling code should call
cpufreq_cpu_put.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r@
expression x,E;
statement S;
position p1,p2,p3;
@@

(
if ((x = cpufreq_cpu_get@p1(...)) == NULL || ...) S
|
x = cpufreq_cpu_get@p1(...)
... when != x
if (x == NULL || ...) S
)
<...
if@p3 (...) { ... when != cpufreq_cpu_put(x)
                  when != if (x) { ... cpufreq_cpu_put(x); ...}
    return@p2 ...;
}
...>
(
return x;
|
return 0;
|
x = E
|
E = x
|
cpufreq_cpu_put(x)
)

@exists@
position r.p1,r.p2,r.p3;
expression x;
int ret != 0;
statement S;
@@

* x = cpufreq_cpu_get@p1(...)
  <...
* if@p3 (...)
  S
  ...>
* return@p2 \(NULL\|ret\);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] add error handling for cpufreq_register_governor() error
Akinobu Mita [Mon, 14 Jul 2008 03:00:45 +0000 (12:00 +0900)]
[CPUFREQ] add error handling for cpufreq_register_governor() error

Add error handling for cpufreq_register_governor() error

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: cpufreq@lists.linux.org.uk
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] acpi-cpufreq: add error handling for cpufreq_register_driver() error
Akinobu Mita [Mon, 14 Jul 2008 02:59:44 +0000 (11:59 +0900)]
[CPUFREQ] acpi-cpufreq: add error handling for cpufreq_register_driver() error

add error handling for cpufreq_register_driver() error

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: cpufreq@lists.linux.org.uk
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] Coding style fixes to arch/x86/kernel/cpu/cpufreq/powernow-k6.c
Paolo Ciarrocchi [Mon, 28 Jul 2008 19:08:16 +0000 (21:08 +0200)]
[CPUFREQ] Coding style fixes to arch/x86/kernel/cpu/cpufreq/powernow-k6.c

Before:
total: 11 errors, 15 warnings, 255 lines checked

After:
total: 0 errors, 6 warnings, 254 lines checked

paolo@paolo-desktop:~/linux.trees.git$ md5sum /tmp/powernow-k6.o.*
476932f5e1ffe365db9d1dfb3f860369  /tmp/powernow-k6.o.after
476932f5e1ffe365db9d1dfb3f860369  /tmp/powernow-k6.o.before

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] Coding style fixes to arch/x86/kernel/cpu/cpufreq/elanfreq.c
Paolo Ciarrocchi [Mon, 28 Jul 2008 11:00:49 +0000 (13:00 +0200)]
[CPUFREQ] Coding style fixes to arch/x86/kernel/cpu/cpufreq/elanfreq.c

Before:
total: 15 errors, 10 warnings, 308 lines checked

After:
total: 0 errors, 4 warnings, 308 lines checked

paolo@paolo-desktop:~/linux.trees.git$ md5sum /tmp/elafreq.o.*
add1d36c2f077c5aab7682e8642a9f34  /tmp/elafreq.o.after
add1d36c2f077c5aab7682e8642a9f34  /tmp/elafreq.o.before

paolo@paolo-desktop:~/linux.trees.git$ size /tmp/elafreq.o.*
   text    data     bss     dec     hex filename
    934     270       4    1208     4b8 /tmp/elafreq.o.after
    934     270       4    1208     4b8 /tmp/elafreq.o.before

Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] correct broken links and email addresses
Németh Márton [Thu, 9 Oct 2008 12:59:17 +0000 (14:59 +0200)]
[CPUFREQ] correct broken links and email addresses

Replace the no longer working links and email address in the
documentation and in source code.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years agosched debug: add name to sched_domain sysctl entries
Ingo Molnar [Thu, 9 Oct 2008 09:35:51 +0000 (11:35 +0200)]
sched debug: add name to sched_domain sysctl entries

add /proc/sys/kernel/sched_domain/cpu0/domain0/name, to make
it easier to see which specific scheduler domain remained at
that entry.

Since we process the scheduler domain tree and
simplify it, it's not always immediately clear during debugging
which domain came from where.

depends on CONFIG_SCHED_DEBUG=y.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agohwmon: (abituguru3) Enable DMI probing feature on Abit AT8 32X
Alistair John Strachan [Thu, 9 Oct 2008 13:33:59 +0000 (15:33 +0200)]
hwmon: (abituguru3) Enable DMI probing feature on Abit AT8 32X

Enable driver checking of the DMI product name (when enabled) on
an Abit AT8 32X, instead of falling back to a manual probe. This
eliminates false negatives and eventually will help avoid
unnecessary bus probes on unsupported mainboards.

Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk>
Tested-by: Daniel Exner <dex@dragonslave.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agohwmon: (abituguru3) Enable reading from AUX3 fan on Abit AT8 32X
Alistair John Strachan [Thu, 9 Oct 2008 13:33:59 +0000 (15:33 +0200)]
hwmon: (abituguru3) Enable reading from AUX3 fan on Abit AT8 32X

The table for the Abit AT8 32X was incorrectly missing an entry
for the sixth ("AUX3") fan. Add this entry, exporting the fan
reading to userspace.

Closes lm-sensors.org ticket #2339.

Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk>
Tested-by: Daniel Exner <dex@dragonslave.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agohwmon: (adt7473) Fix some bogosity in documentation file
Darrick J. Wong [Thu, 9 Oct 2008 13:33:58 +0000 (15:33 +0200)]
hwmon: (adt7473) Fix some bogosity in documentation file

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agohwmon: Define sysfs interface for energy consumption register
Darrick J. Wong [Thu, 9 Oct 2008 13:33:58 +0000 (15:33 +0200)]
hwmon: Define sysfs interface for energy consumption register

Describe the sysfs files that were introduced in the ibmaem driver.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agohwmon: (it87) Prevent power-off on Shuttle SN68PT
Jean Delvare [Thu, 9 Oct 2008 13:33:58 +0000 (15:33 +0200)]
hwmon: (it87) Prevent power-off on Shuttle SN68PT

On the Shuttle SN68PT, FAN_CTL2 is apparently not connected to a fan,
but to something else. One user has reported instant system power-off
when changing the PWM2 duty cycle, so we disable it.

I use the board name string as the trigger in case the same board is
ever used in other systems.

This closes lm-sensors ticket #2349:
pwmconfig causes a hard poweroff
http://www.lm-sensors.org/ticket/2349

Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agoeeepc-laptop: Fix hwmon interface
Corentin Chary [Thu, 9 Oct 2008 13:33:57 +0000 (15:33 +0200)]
eeepc-laptop: Fix hwmon interface

Creates a name file in the sysfs directory, that
is needed for the libsensors library to work.
Also rename fan1_pwm to pwm1 and scale its value as needed.

This fixes bug #11520:
http://bugzilla.kernel.org/show_bug.cgi?id=11520

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agoblock_dev: fix kernel-doc in new functions
Randy Dunlap [Thu, 9 Oct 2008 08:42:38 +0000 (10:42 +0200)]
block_dev: fix kernel-doc in new functions

Fix kernel-doc in new functions:

Error(mmotm-2008-1002-1617//fs/block_dev.c:895): duplicate section name 'Description'
Error(mmotm-2008-1002-1617//fs/block_dev.c:924): duplicate section name 'Description'
Warning(mmotm-2008-1002-1617//fs/block_dev.c:1282): No description found for parameter 'pathname'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
cc: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
13 years agoblock: add some comments around the bio read-write flags
Jens Axboe [Thu, 9 Oct 2008 07:01:10 +0000 (09:01 +0200)]
block: add some comments around the bio read-write flags

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
13 years agoblock: mark bio_split_pool static
Denis ChengRq [Thu, 9 Oct 2008 06:57:05 +0000 (08:57 +0200)]
block: mark bio_split_pool static

Since all bio_split calls refer the same single bio_split_pool, the bio_split
function can use bio_split_pool directly instead of the mempool_t parameter;

then the mempool_t parameter can be removed from bio_split param list, and
bio_split_pool is only referred in fs/bio.c file, can be marked static.

Signed-off-by: Denis ChengRq <crquan@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
13 years agoblock: Find bio sector offset given idx and offset
Martin K. Petersen [Thu, 2 Oct 2008 02:42:53 +0000 (22:42 -0400)]
block: Find bio sector offset given idx and offset

Helper function to find the sector offset in a bio given bvec index
and page offset.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
13 years agoblock: gendisk integrity wrapper
Martin K. Petersen [Thu, 2 Oct 2008 16:47:49 +0000 (18:47 +0200)]
block: gendisk integrity wrapper

This is a wrapper for accessing a gendisk's integrity bits.  It allows
the integrity support in MD to be compiled with BLK_DEV_INTEGRITY off.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
13 years agoblock: Switch blk_integrity_compare from bdev to gendisk
Martin K. Petersen [Wed, 1 Oct 2008 07:38:39 +0000 (03:38 -0400)]
block: Switch blk_integrity_compare from bdev to gendisk

The DM and MD integrity support now depends on being able to use
gendisks instead of block_devices when comparing integrity profiles.
Change function parameters accordingly.

Also update comparison logic so that two NULL profiles are a valid
configuration.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
13 years agoblock: Fix double put in blk_integrity_unregister
Martin K. Petersen [Wed, 1 Oct 2008 07:38:38 +0000 (03:38 -0400)]
block: Fix double put in blk_integrity_unregister

- kobject_del already puts the parent.

 - Set integrity profile to NULL to prevent stale data.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
13 years agoblock: Introduce integrity data ownership flag
Martin K. Petersen [Wed, 1 Oct 2008 07:38:37 +0000 (03:38 -0400)]
block: Introduce integrity data ownership flag

A filesystem might supply its own integrity metadata.  Introduce a
flag that indicates whether the filesystem or the block layer owns the
integrity buffer.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>