[SCSI] sg: fix q->queue_lock on scsi_error_handler path
sg_rq_end_io() is called via rq->end_io. In some rare cases,
sg_rq_end_io calls blk_put_request/blk_rq_unmap_user (when a program
issuing a command has gone before the command completion; e.g. by
interrupting a program issuing a command before the command
completes).
The problem is that scsi_error_handler() calls rq->end_io too. We
can't call blk_put_request/blk_rq_unmap_user too in this path (we hold
q->queue_lock).
To avoid the above problem, in these rare cases, this patch always
uses schedule_work() instead of execute_in_process_context().
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Harvey Harrison [Wed, 4 Mar 2009 20:06:06 +0000 (12:06 -0800)]
[SCSI] replace __inline with inline
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Adrian Bunk [Wed, 4 Mar 2009 20:06:07 +0000 (12:06 -0800)]
[SCSI] a2091: make 2 functions static
a2091_{detect,release}() can become static.
Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Adrian Bunk [Wed, 4 Mar 2009 20:06:08 +0000 (12:06 -0800)]
[SCSI] a3000: make 2 functions static
a3000_{detect,release}() can become static.
Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Adrian Bunk [Wed, 4 Mar 2009 20:06:05 +0000 (12:06 -0800)]
[SCSI] ses: #if 0 the unused ses_match_host()
Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
[SCSI] sg: fix iovec bugs introduced by the block layer conversion
- needs to use copy_from_user for iovec before passing it to
blk_rq_map_user_iov().
- before the block layer conversion, if ->dxfer_len and sum of iovec
disagrees, the shorter one wins. However, currently sg returns
-EINVAL. This restores the old behavior.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Cc: stable@kernel.org Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Firmware blob is little endian looks like this...
unsigned char Version1
unsigned char Version2
unsigned char Version3
unsigned char Padding
unsigned short start_address
unsigned short data
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Jean Delvare [Wed, 1 Apr 2009 18:11:29 +0000 (13:11 -0500)]
[SCSI] libiscsi: fix iscsi pool error path
Le lundi 30 mars 2009, Chris Wright a écrit :
> q->queue could be ERR_PTR(-ENOMEM) which will break unwinding
> on error. Make iscsi_pool_free more defensive.
>
Making the freeing of q->queue dependent on q->pool being set looks
really weird (although it is correct at the moment. But this seems
to be fixable in a much simpler way.
With the benefit that only the error case is slowed down. In both
cases we have a problem if q->queue contains an error value but it's
not -ENOMEM. Apparently this can't happen today, but it doesn't feel
right to assume this will always be true. Maybe it's the right time
to fix this as well.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Mike Christie [Wed, 1 Apr 2009 18:11:28 +0000 (13:11 -0500)]
[SCSI] cxgb3i: call ddp release function directly
cxgb3i_ddp_cleanup just calls ddp_release directly so there is
no reason for the wrapper. This patch just renames ddp_release
to cxgb3i_ddp_cleanup and removes the old wrapper function.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Ed Lin [Wed, 1 Apr 2009 01:30:19 +0000 (17:30 -0800)]
[SCSI] stex: small code fixes and changes
These are some small code fixes and changes, including:
- use 64 bit when possible
- remove some unnecessary code (in interrupt, queuecommand routine etc.)
- code change for reset handler
Signed-off-by: Ed Lin <ed.lin@promise.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Joe Eykholt [Tue, 17 Mar 2009 18:42:40 +0000 (11:42 -0700)]
[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive.
FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs)
by sending solicitations and listening for advertisements from FCFs.
It also provides for keep-alives and period advertisements so that both
parties know they have connectivity. If the FCF loses connectivity to
the storage fabric, it can send a Link Reset to inform the E_node.
This version is also compatible with pre-FIP implementations, so no
configured selection between FIP mode and non-FIP mode is required.
We wait a couple seconds after sending the initial solicitation
and then send an old-style FLOGI. If we receive any FIP frames,
we use FIP only mode. If the old FLOGI receives a response,
we disable FIP mode. After every reset or link up, this
determination is repeated.
Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Joe Eykholt [Tue, 17 Mar 2009 18:42:35 +0000 (11:42 -0700)]
[SCSI] fcoe: Add a header file defining the FIP protocol for FCoE.
Adds include/scsi/fc/fc_fip.h for FIP protocol definitions.
Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
The foce_softc mem was reserved by libfc_host_alloc as well as
by fcoe_host_alloc.
Removes one liner fcoe_host_alloc completely, instead directly calls
libfc_host_alloc to alloc scsi_host with libfc for just one fcoe_softc
as fcoe private data.
Moves libfc_host_alloc to libfc.h since it is a libfc API, placed
lport_priv API adjacent to libfc_host_alloc since this is related
to scsi_host priv data.
Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Vasu Dev [Tue, 17 Mar 2009 18:42:24 +0000 (11:42 -0700)]
[SCSI] fcoe: cleans up libfcoe.h and adds fcoe.h for fcoe module
Removes no where used several inline functions prefixed with skb_*
and be16_to_cpu.
Moves fcoe module specific func prototypes to fcoe.c from libfcoe.h,
moved only need for build.
Adds fcoe module header file fcoe.h and then moves fcoe module
specific fcoe_percpu_s and fcoe_softc to fcoe.h from libfcoe.h.
Moves all defines from fcoe.c to fcoe.h since now fcoe module
has its own header file fcoe.h.
[jejb: removed EXPORT_SYMBOL_GPL(fcoe_fc_crc) which caused a section mismatch] Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Vasu Dev [Tue, 17 Mar 2009 18:42:18 +0000 (11:42 -0700)]
[SCSI] fcoe: moves common FCoE library API functions to libfcoe module
Moves these functions as-is from fcoe.c to libfcoe.c, since
they're are common routines:
- fcoe_wwn_from_mac
- fcoe_libfc_config
Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Vasu Dev [Tue, 17 Mar 2009 18:42:13 +0000 (11:42 -0700)]
[SCSI] fcoe, libfc: add libfcoe module
Just sets up build environment for libfcoe module towards a
libfcoe library for libfc LLDs using FCoE as libfc transport.
Common library code to libfcoe is added in next patch.
Also, updated MODULE_LICENSE from "GPL" string to "GPL v2" for
libfc, libfcoe and fcoe modules to accurately match the licenses.
Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Vasu Dev [Fri, 27 Mar 2009 16:07:43 +0000 (09:07 -0700)]
[SCSI] fcoe: renames libfcoe.c to fcoe.c as the only fcoe module file
Renames libfcoe.c to fcoe.c, fcoe.c becomes the only
.c file for fcoe.ko.
Also deleted "$Id: Makefile" from fcoe module Makefle.
Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Vasu Dev [Fri, 27 Mar 2009 16:06:31 +0000 (09:06 -0700)]
[SCSI] fcoe: removes default sw transport code file fcoe_sw.c
Moves only required code from fcoe_sw.c to libfcoe.c towards having
just one source file for fcoe module, this gets rid off default sw
transport code in a separate fcoe_sw.c file.
Very minor renaming along this move, dropped _sw_ or _SW_ use
in names and replaced them by _if_ as a auxiliary interface
functions. Now some of these funcs can be removed or merged with
other func after fcoe transport is gone, but that should be
in another patch to keep this patch simple.
Now the libfcoe.c file name for fcoe module doesn't go along well,
so the libfcoe.c file renaming to fcoe.c as the only single fcoe
module file is done in next patch to keep this patch clean
and small for review.
Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Vasu Dev [Fri, 27 Mar 2009 16:03:29 +0000 (09:03 -0700)]
[SCSI] fcoe: prep work to completely remove fc_transport_fcoe code
The fcoe transport code was added for generic FCoE transport
infrastructure to allow additional offload related module loading
on demand, this is not required anymore after recently added
different offload approach by having offload related func ops
in netdev.
This patch removes fcoe transport related code use, calls functions
directly between existing libfcoe.c and fcoe_sw.c for now, for
example fcoe_sw_destroy and fcoe_sw_create calling.
The fcoe_sw.c and libfcoe.c code will be further consolidated in
later patches and then also the default fcoe sw transport code
file fcoe_sw.c will be completely removed.
The fcoe transport code files are completely removed in next
patch to keep this patch simple for reviewing.
[This patch is an update to a previous patch. This update
resolves a build error as well as fixes a defect related to
not calling fc_release_transport().]
Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Robert Love [Tue, 17 Mar 2009 18:41:46 +0000 (11:41 -0700)]
[SCSI] fcoe: create/destroy fcoe Rx threads on CPU hotplug events
This patch adds support for dynamically created Rx threads
upon CPU hotplug events.
There were existing synchronization problems that this patch
attempts to resolve. The main problem had to do with fcoe_rcv()
running in a different context than the hotplug notifications.
This opened the possiblity that fcoe_rcv() would target a Rx
thread for a skb. However, that thread could become NULL if
the CPU was made offline.
This patch uses the Rx queue's (a skb_queue) lock to protect
the thread it's associated with and we use the 'thread' member
of the fcoe_percpu_s to determine if the thread is ready to
accept new skbs.
The patch also attempts to do a better job of cleaning up, both
if hotplug registration fails as well as when the module is
removed.
Contribution provided by Joe Eykholt <jeykholt@cisco.com> to
fix incorrect use of __cpuinitdata.
Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Robert Love [Tue, 31 Mar 2009 22:51:50 +0000 (15:51 -0700)]
[SCSI] fcoe: Use per-CPU kernel function for dev_stats instead of an array
Remove the hotplug creation of dev_stats, we allocate for all possible CPUs
now when we allocate the lport.
v2: Durring the 2.6.30 merge window, before these patches were comitted,
'percpu_ptr' was renamed 'per_cpu_ptr'. This latest update updates this
patch for the name change.
Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Robert Love [Tue, 17 Mar 2009 18:41:35 +0000 (11:41 -0700)]
[SCSI] fcoe: Use percpu kernel funcs for struct fcoe_percpu_s
Convert fcoe_percpu array to use the per-cpu variables
that the kernel provides. Use the kernel's functions to
access this structure.
The cpu member of the fcoe_percpu_s is no longer needed,
so this patch removes it too.
Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Robert Love [Tue, 17 Mar 2009 18:41:30 +0000 (11:41 -0700)]
[SCSI] fcoe: Initialize all possilbe skb_queue(s) when module is loaded
Currently the skb_queue is initialized every time the associated
CPU goes online. This patch has libfcoe initializing the skb_queue
for all possible CPUs when the module is loaded.
This patch also re-orders some declarations in the fcoe_rcv()
function so the structure declarations are grouped before
the primitive declarations.
Lastly, this patch converts all CPU indicies to use unsigned int
since CPU indicies should not be negative.
Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Boaz Harrosh [Tue, 31 Mar 2009 17:06:44 +0000 (20:06 +0300)]
[SCSI] osd_uld: Remove creation of osd_scsi class symlink
Remove the creation of the symlink from the device to
it's class. On modern systems this is already created by
a udev rule and would WARN on load. On old systems it is
not needed, none of the current osd user-mode tools use
this link.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Boaz Harrosh [Tue, 31 Mar 2009 17:05:29 +0000 (20:05 +0300)]
[SCSI] libosd: fix blk_put_request called from within request_end_io
A fix for a very serious and stupid bug in osd_initiator. It
used to call blk_put_request() regardless of if it was from
the end_io callback or if called after a sync execution.
It should call the unlocked version __blk_put_request() instead.
Also fixed is the remove of _abort_unexecuted_bios hack, and use of
blk_end_request(,-ERROR,) to deallocate half baked requests. I've
audited the code and it should be safe.
Reported and Tested-by: Xu Yang <onlyxuyang@qq.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
James Bottomley [Mon, 30 Mar 2009 16:55:51 +0000 (16:55 +0000)]
[SCSI] fix recovered error handling
We have a problem with recovered error handling in that any command
which goes down as BLOCK_PC but which returns a sense code of RECOVERED
ERROR gets completed with -EIO. For actual SG_IO commands, this doesn't
matter at all, since the error return code gets dropped in favour of
req->errors which contain the SCSI completion code.
However, if this command is part of the block system, then it will pay
attention to the returned error code. In particularly if a SYNCHRONIZE
CACHE from a barrier command completes with RECOVERED ERROR, the
resulting -EIO on the barrier causes block to error the request and
return it to the filesystem. Fix this by converting the -EIO for
recovered error to zero, plus remove the printing of this from sd and sr
so the message isn't double printed.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Hannes Reinecke [Wed, 25 Mar 2009 10:19:37 +0000 (11:19 +0100)]
[SCSI] aic7xxx: leaves timer running on init failure
aic79xx leaves timers inserted when ahd_init() (which inserts
two timers at its very end) succeeds but ahd_pci_map_int()
fails. In this case ahd->init_level gets incremented to 5 only
when that function succeeds, but ahd_free() calls ahd_shutdown()
only when ahd->init_level == 5, and ahd_shutdown() is where the
timers get removed. Since the freeing of the IRQ is not controlled
by ahd->init_level, we should increment init_level prior to
calling ahd_pci_map_int().
Reported-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Seokmann Ju [Tue, 24 Mar 2009 16:08:18 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Correct several PCI-EEH issues.
In addition to checking for potentially unnecessary iomem
readX()/writeX() operations, a pci_channel_io_perm_failure should
not trigger a full internal removal. Found during additional
testing with pSeries blade systems.
Signed-off-by: Seokmann Ju <seokmann.ju@qlogic.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Andrew Vasquez [Tue, 24 Mar 2009 16:08:16 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Explicitly set the execution-throttle with recent ISPs.
Firmware semantics changed for 24xx and above ISPs in their
handling of the specified execution-throttle passed during
firmware initialization. The original codes use of a theoretical
maximum (0xffff, as carried over from earlier ISPs) could in fact
act as a throttle in some circumstances. Now set the value based
of the firmware's own 'resource' (exchange IOCBs) capabilities.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Andrew Vasquez [Tue, 24 Mar 2009 16:08:15 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Reduce request queue-size overhead with recent ISPs.
The original code to 'resize request-queues' based on iocb-counts
and employed during early ISP23xx testing was too
overly-pessimistic with regards to latencies in the firmware
pulling requests. Recent ISPs can easily keep up processing a
stream of commands from an abbreviated (effectively, half the
original size) queue.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
When IRQs are shared by multiple controllers and if the first one
to register does not disable the IRQ, then IRQ will be enabled
for all other controllers by default, irrespective of their
setting. With IRQF_DISABLED registration, the driver interrupt
routine was called with interrupt enabled always. Disbaling the
registration with IRQF_DISABLED, since driver code is re-entrant
safe and all critical sections are guarded with interrupt safe
locks.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Shyam Sundar [Tue, 24 Mar 2009 16:08:10 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Cleanup unused flags and #defines.
General cleanup of extraneous/legacy crud.
Additional cleanups and Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Lalit Chandivade [Tue, 24 Mar 2009 16:08:09 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Remove implicit ISP-abort after a flash update.
For ISP24xx and above the ISP-abort after flash update is not
needed, as the only purpose it was serving was to update the boot
code and firmware versions in the scsi_qla_host_t structure. Now
an update of the versions will be done in the write-vpd path.
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Additional cleanups and Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Lalit Chandivade [Thu, 26 Mar 2009 15:49:17 +0000 (08:49 -0700)]
[SCSI] qla2xxx: Add reset capabilities for application support.
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Additional cleanups and Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Lalit Chandivade [Tue, 24 Mar 2009 16:08:07 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Correct ISP abort semantics for NVRAM, VPD, and flash update.
Ensure that an ISP-abort has completed before performing any
update. After the update do not wait for an ISP-abort completion,
instead just wait until the ISP is reset. This avoids long
delays due to waiting for loop ready in qla2x00_abort_isp().
Signed-off-by: Lalit Chandivade <lalit.chandivade@qlogic.com>
Additional cleanups and Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Joe Carnuccio [Tue, 24 Mar 2009 16:08:06 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Add Flash-Access-Control support for recent ISPs.
Given the low-level interface varies from one flash-part
manufacturer to the next, the Flash-Access-Control (FAC) mailbox
command makes the specific flash type transparent to the driver
by encapsulating a basic set of accessor and update routines.
Use these new routines where applicable by querying FAC opcode
get-sector-size at init-time.
Additional cleanups and Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Andrew Vasquez [Tue, 24 Mar 2009 16:08:05 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Ensure the timer and DPC routines complete prior to midlayer tear-down.
Since the routines can/will use resources such as devices and
rports that aren't valid after midlayer tear-down, correct this
potential race, by stopping the offending during the early stages
of the remove() callback.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Andrew Vasquez [Tue, 24 Mar 2009 16:08:02 +0000 (09:08 -0700)]
[SCSI] qla2xxx: Preserve an fcport's loop-id after terminate_rport_io().
Since in some circumstances, login-retries may be occuring in the
background via the DPC routine. This race, in the inadvertant
setting of the loop-id to 'NONE' breaks the existing retry logic.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Post refactoring/multi-queue additions essentially eliminated the
need for separate ISP24XX+ queuecommand as isp_ops contains a
function pointer to the associated 'start_scsi()' operation.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Andrew Vasquez [Tue, 24 Mar 2009 16:07:55 +0000 (09:07 -0700)]
[SCSI] qla2xxx: Refactor request/response-queue register handling.
Original code used an overabundance of indirect pointers to
function helpers. Instead, the driver can exploit the immutable
properties of a queue's ISP-association and ID, which are both
known at queue initialization-time.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Brian King [Fri, 20 Mar 2009 20:44:39 +0000 (15:44 -0500)]
[SCSI] ibmvfc: Improve ADISC timeout handling
The ibmvfc driver currently breaks the CRQ and essentially
resets the entire virtual FC adapter, killing all outstanding
ops to all attached targets, if an ADISC times out during target
discover/rediscovery. This patch adds some code to cancel the
ADISC if it times out, which prevents a single ADISC timeout from
affecting the other devices attached to the fabric.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Brian King [Fri, 20 Mar 2009 20:44:37 +0000 (15:44 -0500)]
[SCSI] ibmvfc: Fixup module parms attributes
The ibmvfc driver really does not handle dynamically changing disc_threads.
To change this dynamically would cause confusion in the driver regarding
the number of event structs allocated. Fix this by simply not allowing
disc_threads to be changed at runtime.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Brian King [Fri, 20 Mar 2009 20:44:35 +0000 (15:44 -0500)]
[SCSI] ibmvfc: Fix dropped interrupts
This patch fixes a problem of possible dropped interrupts. Currently,
the ibmvfc driver has a race condition where after ibmvfc_interrupt
gets run, the platform code clears the interrupt. This can result in
lost interrupts and, in worst case scenarios, result in command
timeouts. Fix this by implementing a tasklet similar to what the
ibmvscsi driver does so that interrupt processing is no longer done in
the actual interrupt handler, which eliminates the race.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
Remove two unneeded exports and make two symbols static in fs/mpage.c
Cleanup after commit 585d3bc06f4ca57f975a5a1f698f65a45ea66225
Trim includes of fdtable.h
Don't crap into descriptor table in binfmt_som
Trim includes in binfmt_elf
Don't mess with descriptor table in load_elf_binary()
Get rid of indirect include of fs_struct.h
New helper - current_umask()
check_unsafe_exec() doesn't care about signal handlers sharing
New locking/refcounting for fs_struct
Take fs_struct handling to new file (fs/fs_struct.c)
Get rid of bumping fs_struct refcount in pivot_root(2)
Kill unsharing fs_struct in __set_personality()
Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (21 commits)
drm/radeon: load the right microcode on rs780
drm: remove unused "can_grow" parameter from drm_crtc_helper_initial_config
drm: fix EDID backward compat check
drm: sync the mode validation for INTERLACE/DBLSCAN
drm: fix typo in edid vendor parsing.
DRM: drm_crtc_helper.h doesn't actually need i2c.h
drm: fix missing inline function on 32-bit powerpc.
drm: Use pgprot_writecombine in GEM GTT mapping to get the right bits for !PAT.
drm/i915: Add a spinlock to protect the active_list
drm/i915: Fix SDVO TV support
drm/i915: Fix SDVO CREATE_PREFERRED_INPUT_TIMING command
drm/i915: Fix error in SDVO DTD and modeline convert
drm/i915: Fix SDVO command debug function
drm/i915: fix TV mode setting in property change
drm/i915: only set TV mode when any property changed
drm/i915: clean up udelay usage
drm/i915: add VGA hotplug support for 945+
drm/i915: correctly set IGD device's gtt size for KMS.
drm/i915: avoid hanging on to a stale pointer to raw_edid.
drm/i915: check for -EINVAL from vm_insert_pfn
...
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (54 commits)
glge: remove unused #include <version.h>
dnet: remove unused #include <version.h>
tcp: miscounts due to tcp_fragment pcount reset
tcp: add helper for counter tweaking due mid-wq change
hso: fix for the 'invalid frame length' messages
hso: fix for crash when unplugging the device
fsl_pq_mdio: Fix compile failure
fsl_pq_mdio: Revive UCC MDIO support
ucc_geth: Pass proper device to DMA routines, otherwise oops happens
i.MX31: Fixing cs89x0 network building to i.MX31ADS
tc35815: Fix build error if NAPI enabled
hso: add Vendor/Product ID's for new devices
ucc_geth: Remove unused header
gianfar: Remove unused header
kaweth: Fix locking to be SMP-safe
net: allow multiple dev per napi with GRO
r8169: reset IntrStatus after chip reset
ixgbe: Fix potential memory leak/driver panic issue while setting up Tx & Rx ring parameters
ixgbe: fix ethtool -A|a behavior
ixgbe: Patch to fix driver panic while freeing up tx & rx resources
...
Jack Steiner [Thu, 2 Apr 2009 23:59:48 +0000 (16:59 -0700)]
cpumask: fix slab corruption caused by alloc_cpumask_var_node()
Fix slab corruption caused by alloc_cpumask_var_node() overwriting the
tail end of an off-stack cpumask.
The function zeros out cpumask bits beyond the last possible cpu. The
starting point for zeroing should be the beginning of the mask offset by a
byte count derived from the number of possible cpus. The offset was
calculated in bits instead of bytes. This resulted in overwriting the end
of the cpumask.
Signed-off-by: Jack Steiner <steiner@sgi.com> Acked-by: Mike Travis <travis.sgi.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: <stable@kernel.org> [2.6.29.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Robin Holt [Thu, 2 Apr 2009 23:59:45 +0000 (16:59 -0700)]
Factor out #ifdefs from kernel/spinlock.c to LOCK_CONTENDED_FLAGS
SGI has observed that on large systems, interrupts are not serviced for a
long period of time when waiting for a rwlock. The following patch series
re-enables irqs while waiting for the lock, resembling the code which is
already there for spinlocks.
I only made the ia64 version, because the patch adds some overhead to the
fast path. I assume there is currently no demand to have this for other
architectures, because the systems are not so large. Of course, the
possibility to implement raw_{read|write}_lock_flags for any architecture
is still there.
This patch:
The new macro LOCK_CONTENDED_FLAGS expands to the correct implementation
depending on the config options, so that IRQ's are re-enabled when
possible, but they remain disabled if CONFIG_LOCKDEP is set.
Signed-off-by: Petr Tesarik <ptesarik@suse.cz> Signed-off-by: Robin Holt <holt@sgi.com> Cc: <linux-arch@vger.kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Coly Li [Thu, 2 Apr 2009 23:59:41 +0000 (16:59 -0700)]
fs/reiserfs: return f_fsid for statfs(2)
Make reiserfs3 return f_fsid info for statfs(2). By Andreas' suggestion,
this patch populates a persistent f_fsid between boots/mounts with help of
on-disk uuid record.
Randy Dunlap reported a compiling error from v2 patch like:
fs/built-in.o: In function `reiserfs_statfs':
super.c:(.text+0x7332b): undefined reference to `crc32_le'
super.c:(.text+0x7333f): undefined reference to `crc32_le'
Also he provided helpful solution to fix this error. The modification of v3
patch is based on Randy's suggestion, add 'select CRC32' in fs/reiserfs/Kconfig.
Signed-off-by: Coly Li <coly.li@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Coly Li [Thu, 2 Apr 2009 23:59:38 +0000 (16:59 -0700)]
fs/isofs: return f_fsid for statfs(2)
Make isofs return f_fsid info for statfs(2).
Signed-off-by: Coly Li <coly.li@suse.de> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Coly Li [Thu, 2 Apr 2009 23:59:27 +0000 (16:59 -0700)]
fs/adfs: return f_fsid for statfs(2)
Currently many file systems in Linux kernel do not return f_fsid in statfs
info, the value is set as 0 in vfs layer. Anyway, in some conditions,
f_fsid from statfs(2) is useful, especially being used as (f_fsid, ino)
pair to uniquely identify a file.
Basic idea of the patches is generating a unique fs ID by
huge_encode_dev(sb->s_bdev->bd_dev) during file system mounting life time
(no endian consistent issue). sb is a point of struct super_block of
current mounted file system being accessed by statfs(2).
This patch:
Make adfs return f_fsid info for statfs(2), and do a little variable
renaming in adfs_statfs().
Signed-off-by: Coly Li <coly.li@suse.de> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: "Sergey S. Kostyliov" <rathamahata@php4.ru> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Bob Copeland <me@bobcopeland.com> Cc: Anders Larsen <al@alarsen.net> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: Evgeniy Dushistov <dushistov@mail.ru> Cc: Jan Kara <jack@suse.cz> Cc: Andreas Dilger <adilger@sun.com> Cc: Jamie Lokier <jamie@shareable.org> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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