slub_debug=,dentry is correct, not dentry_cache.
Signed-off-by: NItaru Kitayama <i-kitayama@ap.jp.nec.com>
Signed-off-by: NChristoph Lameter <clameter@sgi.com>

NUMA slab allocator cpu migration bugfix

The NUMA slab allocator (specifically, cache_alloc_refill)
is not refreshing its local copies of what cpu and what
numa node it is on, when it drops and reacquires the irq
block that it inherited from its caller.  As a result
those values become invalid if an attempt to migrate the
process to another numa node occured while the irq block
had been dropped.

The solution is to make cache_alloc_refill reload these
variables whenever it drops and reacquires the irq block.

The error is very difficult to hit.  When it does occur,
one gets the following oops + stack traceback bits in
check_spinlock_acquired:

	kernel BUG at mm/slab.c:2417
	cache_alloc_refill+0xe6
	kmem_cache_alloc+0xd0
	...

This patch was developed against 2.6.23, ported to and
compiled-tested only against 2.6.25-rc4.
Signed-off-by: NJoe Korty <joe.korty@ccur.com>
Signed-off-by: NChristoph Lameter <clameter@sgi.com>

SLUB should pack even small objects nicely into cachelines if that is what
has been asked for. Use the same algorithm as SLAB for this.

The effect of this patch for a system with a cacheline size of 64
bytes is that the 24 byte sized slab caches will now put exactly
2 objects into a cacheline instead of 3 with some overlap into
the next cacheline. This reduces the object density in a 4k slab
from 170 to 128 objects (same as SLAB).
Signed-off-by: NNick Piggin <npiggin@suse.de>
Signed-off-by: NChristoph Lameter <clameter@sgi.com>

Make them all use angle brackets and the directory name.
Acked-by: NPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NChristoph Lameter <clameter@sgi.com>

The NUMA fallback logic should be passing local_flags to kmem_get_pages() and not simply the
flags passed in.
Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NChristoph Lameter <clameter@sgi.com>

The remote frees are in the freelist of the page and not in the
percpu freelist.
Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NChristoph Lameter <clameter@sgi.com>

* 'for-linus' of git://git.infradead.org/~dedekind/ubi-2.6:
  UBI: mtd/ubi/vtbl.c: fix memory leak
  UBI: fix sparse errors in ubi.h
  UBI: fix error message
  UBI: silence warning

On 32bits boxes, boundary_size becomes zero due to a overflow and we
hit BUG_ON in iommu_is_span_boundary.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Matthew Wilcox <matthew@wil.cx>
Acked-by: NGrant Grundler <grundler@parisc-linux.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm migration is no longer done in cpuset_update_task_memory_state() so it
can no longer take current->mm->mmap_sem, so fix the obsolete comment.

[ This changed in commit 04c19fa6
  ("cpuset: migrate all tasks in cpuset at once") when the mm migration
  was moved from cpuset_update_task_memory_state() to update_nodemask() ]
Signed-off-by: NDavid Rientjes <rientjes@google.com>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (27 commits)
  [SCSI] mpt fusion: don't oops if NumPhys==0
  [SCSI] iscsi class: regression - fix races with state manipulation and blocking/unblocking
  [SCSI] qla4xxx: regression - add start scan callout
  [SCSI] qla4xxx: fix host reset dpc race
  [SCSI] tgt: fix build errors when dprintk is defined
  [SCSI] tgt: set the data length properly
  [SCSI] tgt: stop zero'ing scsi_cmnd
  [SCSI] ibmvstgt: set up scsi_host properly before __scsi_alloc_queue
  [SCSI] docbook: fix fusion source files
  [SCSI] docbook: fix scsi source file
  [SCSI] qla2xxx: Update version number to 8.02.00-k9.
  [SCSI] qla2xxx: Correct usage of inconsistent timeout values while issuing ELS commands.
  [SCSI] qla2xxx: Correct discrepancies during OVERRUN handling on FWI2-capable cards.
  [SCSI] qla2xxx: Correct needless clean-up resets during shutdown.
  [SCSI] arcmsr: update version and changelog
  [SCSI] ps3rom: disable clustering
  [SCSI] ps3rom: fix wrong resid calculation bug
  [SCSI] mvsas: fix phy sas address
  [SCSI] gdth: fix to internal commands execution
  [SCSI] gdth: bugfix for the at-exit problems
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  NFS: use new LSM interfaces to explicitly set mount options
  LSM/SELinux: Interfaces to allow FS to control mount options

* 'fixes-25' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] fix section mismatch warnings
  [CPUFREQ] Remove debugging message from e_powersaver
  [CPUFREQ] Fix missing cpufreq_cpu_put() call in ->store
  [CPUFREQ] Fix missing cpufreq_cpu_put() call in ->show

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] incorrect reipl nss name.
  [S390] Load disabled wait psw if reipl fails.
  [S390] Fix IPL from NSS.
  [S390] zcrypt: fix ap_device_list handling
  [S390] sclp_vt220: speed up console output for interactive work
  [S390] dasd: fix reference counting in display method for proc/dasd/devices
  [S390] dasd: let dasd erp matching recognize alias recovery
  [S390] Get rid of memcpy gcc warning workaround.
  [S390] idle: Fix machine check handling in idle loop.
  [S390] Update default configuration.

NFS and SELinux worked together previously because SELinux had NFS
specific knowledge built in.  This design was approved by both groups
back in 2004 but the recent NFS changes to use nfs_parsed_mount_data and
the usage of nfs_clone_mount_data showed this to be a poor fragile
solution.  This patch fixes the NFS functionality regression by making
use of the new LSM interfaces to allow an FS to explicitly set its own
mount options.

The explicit setting of mount options is done in the nfs get_sb
functions which are called before the generic vfs hooks try to set mount
options for filesystems which use text mount data.

This does not currently support NFSv4 as that functionality did not
exist in previous kernels and thus there is no regression.  I will be
adding the needed code, which I believe to be the exact same as the v3
code, in nfs4_get_sb for 2.6.26.
Signed-off-by: NEric Paris <eparis@redhat.com>
Acked-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: NJames Morris <jmorris@namei.org>

Introduce new LSM interfaces to allow an FS to deal with their own mount
options.  This includes a new string parsing function exported from the
LSM that an FS can use to get a security data blob and a new security
data blob.  This is particularly useful for an FS which uses binary
mount data, like NFS, which does not pass strings into the vfs to be
handled by the loaded LSM.  Also fix a BUG() in both SELinux and SMACK
when dealing with binary mount data.  If the binary mount data is less
than one page the copy_page() in security_sb_copy_data() can cause an
illegal page fault and boom.  Remove all NFSisms from the SELinux code
since they were broken by past NFS changes.
Signed-off-by: NEric Paris <eparis@redhat.com>
Acked-by: NStephen Smalley <sds@tycho.nsa.gov>
Acked-by: NCasey Schaufler <casey@schaufler-ca.com>
Signed-off-by: NJames Morris <jmorris@namei.org>

Don't oops if NumPhys==0, instead return -ENODEV.
This patch fixes http://bugzilla.kernel.org/show_bug.cgi?id=9909Signed-off-by: NKrzysztof Piotr Oledzki <ole@ans.pl>
Acked-by: NEric Moore <Eric.Moore@lsi.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Fix the following warnings:
WARNING: vmlinux.o(.text+0xfe6711): Section mismatch in reference from the function cpufreq_unregister_driver() to the variable .cpuinit.data:cpufreq_cpu_notifier
WARNING: vmlinux.o(.text+0xfe68af): Section mismatch in reference from the function cpufreq_register_driver() to the variable .cpuinit.data:cpufreq_cpu_notifier
WARNING: vmlinux.o(.exit.text+0xc4fa): Section mismatch in reference from the function cpufreq_stats_exit() to the variable .cpuinit.data:cpufreq_stat_cpu_notifier

The warnings were casued by references to unregister_hotcpu_notifier()
from normal functions or exit functions.
This is flagged by modpost as a potential error because
it does not know that for the non HOTPLUG_CPU
scenario the unregister_hotcpu_notifier() is a nop.
Silence the warning by replacing the __initdata
annotation with a __refdata annotation.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDave Jones <davej@codemonkey.org.uk>

We don't need to printk a message every time we transition.
Leave the code there, but ifdef'd out, as it's useful when
adding support for new processors.
Reported-by: NPetr Titěra <P.Titera@century.cz>
Signed-off-by: NDave Jones <davej@redhat.com>

refactor to use gotos instead of explicit exit paths
Signed-off-by: NDave Jones <davej@redhat.com>

refactor to use gotos instead of explicit exit paths
Signed-off-by: NDave Jones <davej@redhat.com>

For qla4xxx, we could be starting a session, but some error (network,
target, IO from a device that got started, etc) could cause the session
to fail and curring the block/unblock and state manipulation could race
with each other. This patch just has those operations done in the
single threaded iscsi eh work queue, so that way they are serialized.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

We are seeing EXIST errors from sysfs during device addition.
We need a start scan callout so we do not start scanning sessions
found during hba setup, before the async scsi scan code is ready.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Acked-by: NDavid C Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

The host reset callout could be starting to reset the hba at the same
time the dpc thread is. This creates lots of problems because they both
want to do wierd things with the firmware and interrupts, etc.

This patch just has the host reset function fully shutdown the dpc
thread before resetting the hba.

This patch also moves the setting of the session online bit to fix
a potential race with the dpc thread and iscsi recovery thread.
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Acked-by: NDavid C Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

This addresses the recent ATI SB600 errata, where the hardware does
not like 256-length PRD entries during FPDMA (aka NCQ).

It hurts performance on SB600, but it is more important to get a
correct patch eliminating the data corruption/lockups, and then later
on tune for performance.

We simply limit each command to a maximum of 255 sectors, on SB600.
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

When masking, mask out the modes that are unsupported not the ones
that are supported.  This makes life happier.
Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

/sys/firmware/reipl/nss/name contains the nss name when defsys or
savesys command has been executed. If the defsys or savesys command
fails the kernel_nss_name has to be cleared since a reipl on that
nss name won't be possible.
Signed-off-by: NHongjie Yang <hongjie@us.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

Normally this should not happen, but it's cleaner to do it that way.
Signed-off-by: NMichael Holzheu <holzheu@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

IPL from NSS didn't work because the memory detection routine omits any
memory sections with a size lower than what MAX_ORDER defines.
This causes the detection routine to skip the first memory segment which
has a size of 1MB. Which later on will let the kernel think that there
is no memory available at all.
Since in addition the z/VM memory increment size is 1MB force MAX_ORDER
to be 9, so we can support 1MB segments.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

In ap_device_probe() we can add the new ap device to the internal
device list only if the device probe function successfully returns.
Otherwise we might end up with an invalid device in the internal ap
device list.
Signed-off-by: NRalph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

Currently an output buffer can wait up to HZ/2 until the buffer is
flushed. The wait time is noticeable in interactive tools like mc.

Change the value to HZ/20, which seems enough for interactive work.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

Using the /proc/dasd/devices interface leaves the reference counter
of alias devices in an inconsistent state. A process that tries to set
such a device offline afterwards will hang.
The dasd_devices_show function returns immediately for alias devices
and this code path was missing a dasd_put_device call.
Signed-off-by: NStefan Weinhuber <wein@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

When a request fails that was started on an alias device then the
first recovery step is to retry it on the base device. If the
recovery request fails again with the same symptoms, the next step
should not be a simple retry, but should be a proper recovery based
on sense data, etc. To do so, the dasd recovery functions need to
recognize the alias recovery step in the erp chain by comparing
the start devices.
Signed-off-by: NStefan Weinhuber <wein@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

Compile smp.o with -Wno-nonnull so gcc stops warning about memcpy
being used with a null parameter. Also remove the workaround code
and use a char * cast instead of a void * cast to do computations.

Cc: Bastian Blank <bastian@waldi.eu.org>
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

If a machine check handling is pending when the idle loop is entered
default_idle will be left with timer ticks and virtual timer disabled.
Fix this by "calling" the idle_chain. Also a BUG_ON(!in_interrupt) in
start_hz_timer must be removed since the function now gets called from
non interrupt context as well.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

A change after 2.6.24 broke ndiswrapper by accidentally removing its
access to GPL-only symbols.  Revert that change and add comments about
the reasons why ndiswrapper and driverloader are treated in a special
way.
Signed-off-by: NPavel Roskin <proski@gnu.org>
Acked-by: NGreg KH <gregkh@suse.de>
Acked-by: NIngo Molnar <mingo@elte.hu>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jon Masters <jonathan@jonmasters.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (22 commits)
  [IPCONFIG]: The kernel gets no IP from some DHCP servers
  b43legacy: Fix module init message
  rndis_wlan: fix broken data copy
  libertas: compare the current command with response
  libertas: fix sanity check on sequence number in command response
  p54: fix eeprom parser length sanity checks
  p54: fix EEPROM structure endianness
  ssb: Add pcibios_enable_device() return value check
  rc80211-pid: fix rate adjustment
  [ESP]: Add select on AUTHENC
  [TCP]: Improve ipv4 established hash function.
  [NETPOLL]: Revert two bogus cleanups that broke netconsole.
  [PPPOL2TP]: Add missing sock_put() in pppol2tp_tunnel_closeall()
  Subject: [PPPOL2TP] add missing sock_put() in pppol2tp_recv_dequeue()
  [BLUETOOTH]: l2cap info_timer delete fix in hci_conn_del
  [NET]: Fix race in generic address resolution.
  iucv: fix build error on !SMP
  [TCP]: Must count fack_count also when skipping
  [TUN]: Fix RTNL-locking in tun/tap driver
  [SCTP]: Use proc_create to setup de->proc_fops.
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC]: Fix link errors with gcc-4.3
  sparc64: replace remaining __FUNCTION__ occurances
  sparc: replace remaining __FUNCTION__ occurances
  [SPARC]: Add reboot_command[] extern decl to asm/system.h
  [SPARC]: Mark linux_sparc_{fpu,chips} static.

From: Stephen Hemminger <shemminger@linux-foundation.org>

Based upon a patch by Marcel Wappler:
 
   This patch fixes a DHCP issue of the kernel: some DHCP servers
   (i.e.  in the Linksys WRT54Gv5) are very strict about the contents
   of the DHCPDISCOVER packet they receive from clients.
 
   Table 5 in RFC2131 page 36 requests the fields 'ciaddr' and
   'siaddr' MUST be set to '0'.  These DHCP servers ignore Linux
   kernel's DHCP discovery packets with these two fields set to
   '255.255.255.255' (in contrast to popular DHCP clients, such as
   'dhclient' or 'udhcpc').  This leads to a not booting system.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>