James Bottomley [Sat, 18 Mar 2006 20:14:21 +0000 (14:14 -0600)]
[SCSI] allow displaying and setting of cache type via sysfs
I think I promised to do this two years ago
This patch adds a scsi_disk class with the cache type and FUA
parameters, so user land application can easily obtain them without
having to parse dmesg. It also allows setting the cache type (use with
care...)
This patch is a bit dangerous because I've replaced the disk kref with a
class device reference ...
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Moore, Eric [Tue, 14 Mar 2006 16:14:24 +0000 (09:14 -0700)]
[SCSI] fusion - expander hotplug suport in mptsas module
This adds support for hot adding and removing
expanders, and its associated attached devices.
When there is a change in topology,
the fusion firmware sends the
MPI_EVENT_SAS_DISCOVERY event to the driver.
The driver will read firmware config pages
to determine what changes took place, and refresh
drivers view of the world stored in ioc->sas_topology.
Here is the details of the action the driver does:
(1) Expander Added : The mptsas_discovery_work
workqueue is called. Config pages read, and
ioc->sas_topology is refreshed. The sas_phy_add()
is called for each phy of the expander. The
expanders attached devices are added via
sas_rphy_add(). Added end devices are handled within
the MPT_ADD_DEVICE logic in mptsas_hotplug_work
workqueue.
(2) Expander Delete : The sas_rphy_delete() will be
called for the top most compenent of the parent that the
expander is attached to. The sas_rphy_delete call
will delete all the children phys, rphys, and end devices.
This is handled from mptsas_discovery_work workqueue.
Signed-off-by: Eric Moore <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Moore, Eric [Tue, 14 Mar 2006 16:14:03 +0000 (09:14 -0700)]
[SCSI] fusion - move some debug firmware event debug msgs to verbose level
Created a debug level MPT_DEBUG_VERBOSE_EVENTS.
Moving some of the more vebose debug messages
for firwmare events into new debug level. Also
added some more firmware events descriptions.
Signed-off-by: Eric Moore <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Replace the eh_timed_out method usage with setting sdev->timeout in
slave_configure. Also only use the extended timeout for raid volumes,
physical devices shouldn't need it.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Moore, Eric [Tue, 14 Mar 2006 16:18:18 +0000 (09:18 -0700)]
[SCSI] drivers/base/bus.c - export reprobe
Adding support for exposing hidden raid components for sg
interface. The sdev->no_uld_attach flag will set set accordingly.
The sas module supports adding/removing raid volumes using online
storage management application interface.
This patch was provided to me by Christoph Hellwig.
Signed-off-by: Eric Moore <Eric.Moore@lsil.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Maneesh Soni [Tue, 14 Mar 2006 09:33:14 +0000 (15:03 +0530)]
[PATCH] Plug kdump shutdown race window
lapic_shutdown() re-enables interrupts which is un-desirable for panic
case, so use local_irq_save() and local_irq_restore() to keep the irqs
disabled for kexec on panic case, and close a possible race window while
kdump shutdown as shown in this stack trace
Dave Peterson [Tue, 14 Mar 2006 05:20:50 +0000 (21:20 -0800)]
[PATCH] EDAC: disable sysfs interface
- Disable the EDAC sysfs code. The sysfs interface that EDAC presents to
user space needs more thought, and is likely to change substantially.
Therefore disable it for now so users don't start depending on it in its
current form.
- Disable the default behavior of calling panic() when an uncorrectible
error is detected (since for now, there is no sysfs interface that allows
the user to configure this behavior).
Signed-off-by: David S. Peterson <dsp@llnl.gov> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Trond Myklebust [Tue, 14 Mar 2006 05:20:48 +0000 (21:20 -0800)]
[PATCH] SUNRPC: Fix potential deadlock in RPC code
In rpc_wake_up() and rpc_wake_up_status(), it is possible for the call to
__rpc_wake_up_task() to fail if another thread happens to be calling
rpc_wake_up_task() on the same rpc_task.
Trond Myklebust [Tue, 14 Mar 2006 05:20:47 +0000 (21:20 -0800)]
[PATCH] NFSv4: fix mount segfault on errors returned that are < -1000
It turns out that nfs4_proc_get_root() may return raw NFSv4 errors instead of
mapping them to kernel errors. Problem spotted by Neil Horman
<nhorman@tuxdriver.com>
Trond Myklebust [Tue, 14 Mar 2006 05:20:46 +0000 (21:20 -0800)]
[PATCH] NFS: Fix a potential panic in O_DIRECT
Based on an original patch by Mike O'Connor and Greg Banks of SGI.
Mike states:
A normal user can panic an NFS client and cause a local DoS with
'judicious'(?) use of O_DIRECT. Any O_DIRECT write to an NFS file where the
user buffer starts with a valid mapped page and contains an unmapped page,
will crash in this way. I haven't followed the code, but O_DIRECT reads with
similar user buffers will probably also crash albeit in different ways.
Details: when nfs_get_user_pages() calls get_user_pages(), it detects and
correctly handles get_user_pages() returning an error, which happens if the
first page covered by the user buffer's address range is unmapped. However,
if the first page is mapped but some subsequent page isn't, get_user_pages()
will return a positive number which is less than the number of pages requested
(this behaviour is sort of analagous to a short write() call and appears to be
intentional). nfs_get_user_pages() doesn't detect this and hands off the
array of pages (whose last few elements are random rubbish from the newly
allocated array memory) to it's caller, whence they go to
nfs_direct_write_seg(), which then totally ignores the nr_pages it's given,
and calculates its own idea of how many pages are in the array from the user
buffer length. Needless to say, when it comes to transmit those uninitialised
page* pointers, we see a crash in the network stack.
GOTO Masanori [Tue, 14 Mar 2006 05:20:44 +0000 (21:20 -0800)]
[PATCH] Fix sigaltstack corruption among cloned threads
This patch fixes alternate signal stack corruption among cloned threads
with CLONE_SIGHAND (and CLONE_VM) for linux-2.6.16-rc6.
The value of alternate signal stack is currently inherited after a call of
clone(... CLONE_SIGHAND | CLONE_VM). But if sigaltstack is set by a
parent thread, and then if multiple cloned child threads (+ parent threads)
call signal handler at the same time, some threads may be conflicted -
because they share to use the same alternative signal stack region.
Finally they get sigsegv. It's an undesirable race condition. Note that
child threads created from NPTL pthread_create() also hit this conflict
when the parent thread uses sigaltstack, without my patch.
To fix this problem, this patch clears the child threads' sigaltstack
information like exec(). This behavior follows the SUSv3 specification.
In SUSv3, pthread_create() says "The alternate stack shall not be inherited
(when new threads are initialized)". It means that sigaltstack should be
cleared when sigaltstack memory space is shared by cloned threads with
CLONE_SIGHAND.
Note that I chose "if (clone_flags & CLONE_SIGHAND)" line because:
- If clone_flags line is not existed, fork() does not inherit sigaltstack.
- CLONE_VM is another choice, but vfork() does not inherit sigaltstack.
- CLONE_SIGHAND implies CLONE_VM, and it looks suitable.
- CLONE_THREAD is another candidate, and includes CLONE_SIGHAND + CLONE_VM,
but this flag has a bit different semantics.
I decided to use CLONE_SIGHAND.
[ Changed to test for CLONE_VM && !CLONE_VFORK after discussion --Linus ]
[PATCH] macintosh: correct AC Power info in /proc/pmu/info
Report AC Power present in /proc/pmu/info if there is no battery.
Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
David Brownell [Tue, 14 Mar 2006 05:20:40 +0000 (21:20 -0800)]
[PATCH] mtd_dataflash, fix block vs page erase
Fix a bug in the block-erase optimization for Dataflash; it was using block
erase even for smaller segments that need page erase.
That wouldn't matter for JFFS2, which never erases less than one block
(sometimes several blocks), but for other callers it might.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: David Woodhouse <dwmw2@infradead.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Herbert Xu [Mon, 13 Mar 2006 22:26:12 +0000 (14:26 -0800)]
[TCP]: Fix zero port problem in IPv6
When we link a socket into the hash table, we need to make sure that we
set the num/port fields so that it shows us with a non-zero port value
in proc/netlink and on the wire. This code and comment is copied over
from the IPv4 stack as is.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
James Smart [Mon, 13 Mar 2006 13:28:57 +0000 (08:28 -0500)]
[SCSI] FC transport : Avoid device offline cases by stalling aborts until device unblocked
This moves the eh_timed_out functionality from the scsi_host_template
to the transport_template. Given that this is now a transport function,
the EH_RESET_TIMER case no longer caps the timer reschedulings. The
transport guarantees that this is not an infinite condition.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Andi Kleen [Sun, 12 Mar 2006 22:52:59 +0000 (23:52 +0100)]
[PATCH] x86-64: Fix up handling of non canonical user RIPs
EM64T CPUs have somewhat weird error reporting for non canonical RIPs in
SYSRET.
We can't handle any exceptions there because the exception handler would
end up running on the user stack which is unsafe.
To avoid problems any code that might end up with a user touched pt_regs
should return using int_ret_from_syscall. int_ret_from_syscall ends up
using IRET, which allows safe exceptions.
Linus Torvalds [Sun, 12 Mar 2006 22:56:02 +0000 (14:56 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] iwmmxt thread state alignment
[ARM] 3350/1: Enable 1-wire on ARM
[ARM] 3356/1: Workaround for the ARM1136 I-cache invalidation problem
[ARM] 3355/1: NSLU2: remove propmt depends
[ARM] 3354/1: NAS100d: fix power led handling
[ARM] Fix muldi3.S
Russell King [Sun, 12 Mar 2006 22:36:06 +0000 (22:36 +0000)]
[ARM] iwmmxt thread state alignment
This patch removes the reliance of iwmmxt on hand coded alignments.
Since thread_info is always 8K aligned, specifying that fpstate is
8-byte aligned achieves the same effect without needing to resort
to hand coded alignments.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[SCSI] qla2xxx: Correct FCAL login retry logic for ISP24xx.
ISP24XX FW does not support Mbx 0x74 ie Login Local Port.
Added the equivalent code for ISP24XX ie to relogin in non
fabric case for ISP24XX use login iocb.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org> Acked-by: Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Hannes Reinecke [Wed, 8 Mar 2006 12:00:07 +0000 (13:00 +0100)]
[SCSI] aic79xx: Avoid renegotiation on inquiry
Because of some quirk in the SCSI spec the aic79xx driver chose to
force a renegotiation when sending an inquiry. This should better
be handled by the upper layers if required at all.
Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
On certain systems the driver seems to hit upon some
"scsi0: Invalid Sequencer interrupt occurred." problem and dumps card state.
According to Adaptec engineers this message is harmless. So as not to
confuse user we can as well disable the internal card state dump and
just print out the message itself.
Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Hannes Reinecke [Wed, 8 Mar 2006 11:56:56 +0000 (12:56 +0100)]
[SCSI] aic79xx: use tcq functions
This patch converts aic79xx to use the midlayer-supplied tcq
functions.
We also set the queuedepth to '1' if tcq is disabled; the
aic79xx driver gets confused otherwise. Will set it back to
'2' once I figure out how to queue requests in the driver.
Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Hannes Reinecke [Wed, 8 Mar 2006 11:56:14 +0000 (12:56 +0100)]
[SCSI] aic79xx: remove qfrozen
This patch removes the need for platform_data->qfrozen.
We're now using complete() instead of semaphores thus
simplifying ahd_freeze_simq() quite a lot.
This also fixes some deadlocks in the recovery code (again).
Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
James Smart [Tue, 7 Mar 2006 20:04:19 +0000 (15:04 -0500)]
[SCSI] lpfc 8.1.4 : Two misc fixes
Two misc fixes:
- Fix deadlock caused by return with host_lock held in lpfc_findnode_did
- Initialize all fields of the allocated mail box structure to zero.
Was causing some sysfs mailbox commands to fail immediately after load.
Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
James Smart [Tue, 7 Mar 2006 20:04:13 +0000 (15:04 -0500)]
[SCSI] lpfc 8.1.4 : Introduce lpfc_reset_barrier() function for resets on dual channel adapters
Introduce lpfc_reset_barrier() function for resets on dual channel adapters
Workaround for a hardware errata on dual channel asics. There is a
potential for the chip to lock up on a reset if a shared dma engine is in
use. The (ugly) work around requires a reset process which uses a mailbox
command to synchronize the independent channels prior to the reset to
avoid the issue. Unfortunately, the timing windows required to ensure this
workaround succeeds are very specific, meaning we can't release the cpu
during the barrier.
Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Gregor Maier [Sun, 12 Mar 2006 02:51:25 +0000 (18:51 -0800)]
[NETFILTER]: Fix wrong option spelling in Makefile for CONFIG_BRIDGE_EBT_ULOG
Signed-off-by: Gregor Maier <gregor@net.in.tum.de> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Brian Haley [Sun, 12 Mar 2006 02:50:14 +0000 (18:50 -0800)]
[IPV6]: fix ipv6_saddr_score struct element
The scope element in the ipv6_saddr_score struct used in
ipv6_dev_get_saddr() is an unsigned integer, but __ipv6_addr_src_scope()
returns a signed integer (and can return -1).
Signed-off-by: Brian Haley <brian.haley@hp.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / linux-2.6 / log