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* [SCSI] libosd: attributes SupportBoaz Harrosh2009-03-121-0/+327
| | | | | | | | | | | | Support for both List-Mode and Page-Mode osd attributes. One of these operations may be added to most other operations. Define the OSD standard's attribute pages constants and structures (osd_attributes.h) Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] osd_uld: API for retrieving osd devices from KernelBoaz Harrosh2009-03-121-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel clients like exofs can retrieve struct osd_dev(s) by means of below API. + osduld_path_lookup() - given a path (e.g "/dev/osd0") locks and returns the corresponding struct osd_dev, which is then needed for subsequent libosd use. + osduld_put_device() - free up use of an osd_dev. Devices can be shared by multiple clients. The osd_uld_device's life time is governed by an embedded kref structure. The osd_uld_device holds an extra reference to both it's char-device and it's scsi_device, and will release these just before the final deallocation. There are three possible lock sources of the osd_uld_device 1. First and for most is the probe() function called by scsi-ml upon a successful login into a target. Released in release() when logout. 2. Second by user-mode file handles opened on the char-dev. 3. Third is here by Kernel users. All three locks must be removed before the osd_uld_device is freed. The MODULE has three lock sources as well: 1. scsi-ml at probe() time, removed after release(). (login/logout) 2. The user-mode file handles open/close. 3. Import symbols by client modules like exofs. TODO: This API is not enough for the pNFS-objects LD. A more versatile API will be needed. Proposed API could be: struct osd_dev *osduld_sysid_lookup(const char id[OSD_SYSTEMID_LEN]); Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] osd_uld: OSD scsi ULDBoaz Harrosh2009-03-121-0/+6
| | | | | | | | | | | | | Add a Linux driver module that registers as a SCSI ULD and probes for OSD type SCSI devices. When an OSD-type SCSI device is found a character device is created in the form of /dev/osdX - where X goes from 0 up to hard coded 64. The Major character device number used is 260. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: OSDv1 HeadersBoaz Harrosh2009-03-124-0/+914
| | | | | | | | | | | | | | | | | | | | Headers only patch. osd_protocol.h Contains a C-fied definition of the T10 OSD standard osd_types.h Contains CPU order common used types osd_initiator.h API definition of the osd_initiator library osd_sec.h Contains High level API for the security manager. [Note that checkpatch spews errors on things that are valid in this context and will not be fixed] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] add OSD_TYPEBoaz Harrosh2009-03-121-0/+1
| | | | | | | - Define the OSD_TYPE scsi device and let it show up in scans Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] major.h: char-major number for OSD device driverBoaz Harrosh2009-03-121-0/+1
| | | | | | | | Allocate major 260 for osd. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> CC: Torben Mathiasen <device@lanana.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] Remove SUGGEST flagsMartin K. Petersen2009-03-121-11/+0
| | | | | | | | | The SUGGEST_* flags in the SCSI command result have been out of fashion for a while and we don't actually use them in the error handling. Remove the remaining occurrences. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] Check for deleted device in scsi_device_online()Hannes Reinecke2009-03-121-1/+2
| | | | | | | | scsi_device_online() is not just a negation of SDEV_OFFLINE, also devices in state SDEV_DEL are actually offline. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] Add VPD helperMatthew Wilcox2009-03-121-0/+1
| | | | | | | | Based on prior work by Martin Petersen and James Bottomley, this patch adds a generic helper for retrieving VPD pages from SCSI devices. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] fcoe: Out of order tx frames was causing several check condition SCSI ↵Vasu Dev2009-03-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | status frames followed by these errors in log. [sdp] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK [sdp] Sense Key : Aborted Command [current] [sdp] Add. Sense: Data phase error This was causing some test apps to exit due to write failure under heavy load. This was due to a race around adding and removing tx frame skb in fcoe_pending_queue, Chris Leech helped me to find that brief unlocking period when pulling skb from fcoe_pending_queue in various contexts (fcoe_watchdog and fcoe_xmit) and then adding skb back into fcoe_pending_queue up on a failed fcoe_start_io could change skb/tx frame order in fcoe_pending_queue. Thanks Chris. This patch allows only single context to pull skb from fcoe_pending_queue at any time to prevent above described ordering issue/race by use of fcoe_pending_queue_active flag. This patch simplified fcoe_watchdog with modified fcoe_check_wait_queue by use of FCOE_LOW_QUEUE_DEPTH instead previously used several conditionals to clear and set lp->qfull. I think FCOE_MAX_QUEUE_DEPTH with FCOE_LOW_QUEUE_DEPTH will work better in re/setting lp->qfull and these could be fine tuned for performance. 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>
* [SCSI] fcoe: ETH_P_8021Q is already in if_ether and fcoe is not using it anywayYi Zou2009-03-101-4/+0
| | | | | | 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>
* [SCSI] libfc, fcoe: Remove unnecessary cast by removing inline wrapperRobert Love2009-03-101-7/+1
| | | | | | | | | | | | | | | | | Comment from "Andrew Morton <akpm@linux-foundation.org>" > +{ > + return (struct fcoe_softc *)lport_priv(lp); unneeded/undesirable cast of void*. There are probably zillions of instances of this - there always are. This whole inline function was unnecessary. The FCoE layer knows that it's data structure is stored in the lport private data, it can just access it from lport_priv(). Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libfc, fcoe: Fix kerneldoc commentsRobert Love2009-03-101-7/+7
| | | | | | | | | | | | | | | | | | | 1) Added '()' for function names in kerneldoc comments 2) Changed comment bookends from '**/' to '*/'. The comment on the the mailing list was that '**/' "is consistently unconventional. Not wrong, just odd." The Documentation/kernel-doc-nano-HOWTO.txt states that kerneldoc comment blocks should end with '**/' but most (if not all) instance I found under drivers/scsi/ were only using the '*/' so I converted to that style. 3) Removed incorrect linebreaks in kerneldoc comments where found 4) Removed a few unnecessary blank comment lines in kerneldoc comment blocks Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libfc: Cleanup libfc_function_template commentsRobert Love2009-03-061-41/+66
| | | | | | | Made the comments more like the comments for struct scsi_host_template. Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libfc: Don't violate transport template for rogue port creationRobert Love2009-03-061-0/+5
| | | | | Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libfc: rport retry on LS_RJT from certain ELSChris Leech2009-03-061-0/+5
| | | | | | | | | | | | | | | | | This allows any rport ELS to retry on LS_RJT. The rport error handling would only retry on resource allocation failures and exchange timeouts. I have a target that will occasionally reject PLOGI when we do a quick LOGO/PLOGI. When a critical ELS was rejected, libfc would fail silently leaving the rport in a dead state. The retry count and delay are managed by fc_rport_error_retry. If the retry count is exceeded fc_rport_error will be called. When retrying is not the correct course of action, fc_rport_error can be called directly. Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libfc, fcoe: fixed locking issues with lport->lp_mutex around ↵Vasu Dev2009-03-061-10/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | lport->link_status The fcoe_xmit could call fc_pause in case the pending skb queue len is larger than FCOE_MAX_QUEUE_DEPTH, the fc_pause was trying to grab lport->lp_muex to change lport->link_status and that had these issues :- 1. The fcoe_xmit was getting called with bh disabled, thus causing "BUG: scheduling while atomic" when grabbing lport->lp_muex with bh disabled. 2. fc_linkup and fc_linkdown function calls lport_enter function with lport->lp_mutex held and these enter function in turn calls fcoe_xmit to send lport related FC frame, e.g. fc_linkup => fc_lport_enter_flogi to send flogi req. In this case grabbing the same lport->lp_mutex again in fc_puase from fcoe_xmit would cause deadlock. The lport->lp_mutex was used for setting FC_PAUSE in fcoe_xmit path but FC_PAUSE bit was not used anywhere beside just setting and clear this bit in lport->link_status, instead used a separate field qfull in fc_lport to eliminate need for lport->lp_mutex to track pending queue full condition and in turn avoid above described two locking issues. Also added check for lp->qfull in fc_fcp_lport_queue_ready to trigger SCSI_MLQUEUE_HOST_BUSY when lp->qfull is set to prevent more scsi-ml cmds while lp->qfull is set. This patch eliminated FC_LINK_UP and FC_PAUSE and instead used dedicated fields in fc_lport for this, this simplified all related conditional code. Also removed fc_pause and fc_unpause functions and instead used newly added lport->qfull directly in fcoe. 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>
* [SCSI] libfc: Pass lport in exch_mgr_resetAbhijeet Joglekar2009-03-061-2/+2
| | | | | | | | | | | | | | fc_exch_mgr structure is private to fc_exch.c. To export exch_mgr_reset to transport, transport needs access to the exch manager. Change exch_mgr_reset to use lport param which is the shared structure between libFC and transport. Alternatively, fc_exch_mgr definition can be moved to libfc.h so that lport can be accessed from mp*. Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds2009-03-031-0/+4
|\ | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: don't allow setuid to succeed if the user does not have rt bandwidth sched_rt: don't start timer when rt bandwidth disabled
| * sched: don't allow setuid to succeed if the user does not have rt bandwidthDhaval Giani2009-02-271-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix hung task with certain (non-default) rt-limit settings Corey Hickey reported that on using setuid to change the uid of a rt process, the process would be unkillable and not be running. This is because there was no rt runtime for that user group. Add in a check to see if a user can attach an rt task to its task group. On failure, return EINVAL, which is also returned in CONFIG_CGROUP_SCHED. Reported-by: Corey Hickey <bugfood-ml@fatooh.org> Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds2009-03-034-0/+31
|\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: Teach RCU that idle task is not quiscent state at boot
| * | rcu: Teach RCU that idle task is not quiscent state at bootPaul E. McKenney2009-02-264-0/+31
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a bug located by Vegard Nossum with the aid of kmemcheck, updated based on review comments from Nick Piggin, Ingo Molnar, and Andrew Morton. And cleans up the variable-name and function-name language. ;-) The boot CPU runs in the context of its idle thread during boot-up. During this time, idle_cpu(0) will always return nonzero, which will fool Classic and Hierarchical RCU into deciding that a large chunk of the boot-up sequence is a big long quiescent state. This in turn causes RCU to prematurely end grace periods during this time. This patch changes the rcutree.c and rcuclassic.c rcu_check_callbacks() function to ignore the idle task as a quiescent state until the system has started up the scheduler in rest_init(), introducing a new non-API function rcu_idle_now_means_idle() to inform RCU of this transition. RCU maintains an internal rcu_idle_cpu_truthful variable to track this state, which is then used by rcu_check_callback() to determine if it should believe idle_cpu(). Because this patch has the effect of disallowing RCU grace periods during long stretches of the boot-up sequence, this patch also introduces Josh Triplett's UP-only optimization that makes synchronize_rcu() be a no-op if num_online_cpus() returns 1. This allows boot-time code that calls synchronize_rcu() to proceed normally. Note, however, that RCU callbacks registered by call_rcu() will likely queue up until later in the boot sequence. Although rcuclassic and rcutree can also use this same optimization after boot completes, rcupreempt must restrict its use of this optimization to the portion of the boot sequence before the scheduler starts up, given that an rcupreempt RCU read-side critical section may be preeempted. In addition, this patch takes Nick Piggin's suggestion to make the system_state global variable be __read_mostly. Changes since v4: o Changes the name of the introduced function and variable to be less emotional. ;-) Changes since v3: o WARN_ON(nr_context_switches() > 0) to verify that RCU switches out of boot-time mode before the first context switch, as suggested by Nick Piggin. Changes since v2: o Created rcu_blocking_is_gp() internal-to-RCU API that determines whether a call to synchronize_rcu() is itself a grace period. o The definition of rcu_blocking_is_gp() for rcuclassic and rcutree checks to see if but a single CPU is online. o The definition of rcu_blocking_is_gp() for rcupreempt checks to see both if but a single CPU is online and if the system is still in early boot. This allows rcupreempt to again work correctly if running on a single CPU after booting is complete. o Added check to rcupreempt's synchronize_sched() for there being but one online CPU. Tested all three variants both SMP and !SMP, booted fine, passed a short rcutorture test on both x86 and Power. Located-by: Vegard Nossum <vegard.nossum@gmail.com> Tested-by: Vegard Nossum <vegard.nossum@gmail.com> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-03-021-1/+4
|\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: fix warning in io_mapping_map_wc() x86: i915 needs pgprot_writecombine() and is_io_mapping_possible()
| * | fix warning in io_mapping_map_wc()Pallipadi, Venkatesh2009-03-021-1/+4
| | | | | | | | | | | | | | | Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | net headers: export dcbnl.hChris Leech2009-03-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | The DCB netlink interface is required for building the userspace tools available at e1000.sourceforge.net Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | net headers: cleanup dcbnl.hChris Leech2009-03-011-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) add an include for <linux/types.h> 2) change dcbmsg.dcb_family from unsigned char to __u8 to be more consistent with use of kernel types Signed-off-by: Chris Leech <christopher.leech@intel.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller2009-02-289-17/+46
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| * | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-02-271-11/+35
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: enable DMAR by default xen: disable interrupts early, as start_kernel expects gpu/drm, x86, PAT: io_mapping_create_wc and resource_size_t gpu/drm, x86, PAT: Handle io_mapping_create_wc() errors in a clean way x86, Voyager: fix compile by lifting the degeneracy of phys_cpu_present_map x86, doc: fix references to Documentation/x86/i386/boot.txt
| | * | gpu/drm, x86, PAT: io_mapping_create_wc and resource_size_tVenkatesh Pallipadi2009-02-251-11/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | io_mapping_create_wc should take a resource_size_t parameter in place of unsigned long. With unsigned long, there will be no way to map greater than 4GB address in i386/32 bit. On x86, greater than 4GB addresses cannot be mapped on i386 without PAE. Return error for such a case. Patch also adds a structure for io_mapping, that saves the base, size and type on HAVE_ATOMIC_IOMAP archs, that can be used to verify the offset on io_mapping_map calls. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Eric Anholt <eric@anholt.net> Cc: Keith Packard <keithp@keithp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | Fix recursive lock in free_uid()/free_user_ns()David Howells2009-02-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | free_uid() and free_user_ns() are corecursive when CONFIG_USER_SCHED=n, but free_user_ns() is called from free_uid() by way of uid_hash_remove(), which requires uidhash_lock to be held. free_user_ns() then calls free_uid() to complete the destruction. Fix this by deferring the destruction of the user_namespace. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | block: reduce stack footprint of blk_recount_segments()Jens Axboe2009-02-261-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | blk_recalc_rq_segments() requires a request structure passed in, which we don't have from blk_recount_segments(). So the latter allocates one on the stack, using > 400 bytes of stack for that. This can cause us to spill over one page of stack from ext4 at least: 0) 4560 400 blk_recount_segments+0x43/0x62 1) 4160 32 bio_phys_segments+0x1c/0x24 2) 4128 32 blk_rq_bio_prep+0x2a/0xf9 3) 4096 32 init_request_from_bio+0xf9/0xfe 4) 4064 112 __make_request+0x33c/0x3f6 5) 3952 144 generic_make_request+0x2d1/0x321 6) 3808 64 submit_bio+0xb9/0xc3 7) 3744 48 submit_bh+0xea/0x10e 8) 3696 368 ext4_mb_init_cache+0x257/0xa6a [ext4] 9) 3328 288 ext4_mb_regular_allocator+0x421/0xcd9 [ext4] 10) 3040 160 ext4_mb_new_blocks+0x211/0x4b4 [ext4] 11) 2880 336 ext4_ext_get_blocks+0xb61/0xd45 [ext4] 12) 2544 96 ext4_get_blocks_wrap+0xf2/0x200 [ext4] 13) 2448 80 ext4_da_get_block_write+0x6e/0x16b [ext4] 14) 2368 352 mpage_da_map_blocks+0x7e/0x4b3 [ext4] 15) 2016 352 ext4_da_writepages+0x2ce/0x43c [ext4] 16) 1664 32 do_writepages+0x2d/0x3c 17) 1632 144 __writeback_single_inode+0x162/0x2cd 18) 1488 96 generic_sync_sb_inodes+0x1e3/0x32b 19) 1392 16 sync_sb_inodes+0xe/0x10 20) 1376 48 writeback_inodes+0x69/0xb3 21) 1328 208 balance_dirty_pages_ratelimited_nr+0x187/0x2f9 22) 1120 224 generic_file_buffered_write+0x1d4/0x2c4 23) 896 176 __generic_file_aio_write_nolock+0x35f/0x393 24) 720 80 generic_file_aio_write+0x6c/0xc8 25) 640 80 ext4_file_write+0xa9/0x137 [ext4] 26) 560 320 do_sync_write+0xf0/0x137 27) 240 48 vfs_write+0xb3/0x13c 28) 192 64 sys_write+0x4c/0x74 29) 128 128 system_call_fastpath+0x16/0x1b Split the segment counting out into a __blk_recalc_rq_segments() helper to avoid allocating an onstack request just for checking the physical segment count. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | ide: fix refcounting in device driversBartlomiej Zolnierkiewicz2009-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During host driver module removal del_gendisk() results in a final put on drive->gendev and freeing the drive by drive_release_dev(). Convert device drivers from using struct kref to use struct device so device driver's object holds reference on ->gendev and prevents drive from prematurely going away. Also fix ->remove methods to not erroneously drop reference on a host driver by using only put_device() instead of ide*_put(). Reported-by: Stanislaw Gruszka <stf_xl@wp.pl> Tested-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | Merge branch 'drm-fixes' of ↵Linus Torvalds2009-02-252-2/+3
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/i915: convert DRM_ERROR to DRM_DEBUG in phys object pwrite path drm/i915: make hw page ioremap use ioremap_wc drm: edid revision 0 is valid drm: Correct unbalanced drm_vblank_put() during mode setting. drm: disable encoders before re-routing them drm: Fix ordering of bit fields in EDID structure leading huge vsync values. drm: Fix shifts of EDID vsync offset/width fields. drm/i915: handle bogus VBT panel timing drm/i915: remove PLL debugging messages
| | * | | drm: disable encoders before re-routing themJesse Barnes2009-02-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases we may receive a mode config that has a different CRTC<->encoder map that the current configuration. In that case, we need to disable any re-routed encoders before setting the mode, otherwise they may not pick up the new CRTC (if the output types are incompatible for example). Tested-by: Kristian Høgsberg <krh@bitplanet.net> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
| | * | | drm: Fix ordering of bit fields in EDID structure leading huge vsync values.Jesse Barnes2009-02-251-2/+2
| | | |/ | | |/| | | | | | | | | | | | | | | | | Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@linux.ie>
| * | | Merge git://git.infradead.org/iommu-2.6Linus Torvalds2009-02-251-1/+2
| |\ \ \ | | |/ / | |/| | | | | | | | | | | | | | | | | | * git://git.infradead.org/iommu-2.6: intel-iommu: fix endless "Unknown DMAR structure type" loop VT-d: handle Invalidation Queue Error to avoid system hang intel-iommu: fix build error with INTR_REMAP=y and DMAR=n
| | * | VT-d: handle Invalidation Queue Error to avoid system hangYu Zhao2009-02-091-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When hardware detects any error with a descriptor from the invalidation queue, it stops fetching new descriptors from the queue until software clears the Invalidation Queue Error bit in the Fault Status register. Following fix handles the IQE so the kernel won't be trapped in an infinite loop. Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | i2c-dev: Clarify the unit of ioctl I2C_TIMEOUTJean Delvare2009-02-242-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The unit in which user-space can set the bus timeout value is jiffies for historical reasons (back when HZ was always 100.) This is however not good because user-space doesn't know how long a jiffy lasts. The timeout value should instead be set in a fixed time unit. Given the original value of HZ, this unit should be 10 ms, for compatibility. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Wolfram Sang <w.sang@pengutronix.de>
* | | | Merge branch 'master' of ↵David S. Miller2009-02-242-2/+2
|\ \ \ \ | |/ / / |/| | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
| * | | netfilter: nf_conntrack: don't try to deliver events for untracked connectionsPatrick McHardy2009-02-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The untracked conntrack actually does usually have events marked for delivery as its not special-cased in that part of the code. Skip the actual delivery since it impacts performance noticeably. Signed-off-by: Patrick McHardy <kaber@trash.net>
| * | | netfilter: nfnetlink_log: fix per-rule qthreshold overrideEric Leblond2009-02-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In NFLOG the per-rule qthreshold should overrides per-instance only it is set. With current code, the per-rule qthreshold is 1 if not set and it overrides the per-instance qthreshold. This patch modifies the default xt_NFLOG threshold from 1 to 0. Thus a value of 0 means there is no per-rule setting and the instance parameter has to apply. Signed-off-by: Eric Leblond <eric@inl.fr> Signed-off-by: Patrick McHardy <kaber@trash.net>
| * | | Merge branch 'master' of /repos/git/net-2.6Patrick McHardy2009-02-182-10/+0
| |\ \ \
* | \ \ \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-02-233-10/+1
|\ \ \ \ \ | |_|_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: netns: fix double free at netns creation veth : add the set_mac_address capability sunlance: Beyond ARRAY_SIZE of ib->btx_ring sungem: another error printed one too early ISDN: fix sc/shmem printk format warning SMSC: timeout reaches -1 smsc9420: handle magic field of ethtool_eeprom sundance: missing parentheses? smsc9420: fix another postfixed timeout wimax/i2400m: driver loads firmware v1.4 instead of v1.3 vlan: Update skb->mac_header in __vlan_put_tag(). cxgb3: Add support for PCI ID 0x35. tcp: remove obsoleted comment about different passes TG3: &&/|| confusion ATM: misplaced parentheses? net/mv643xx: don't disable the mib timer too early and lock properly net/mv643xx: use GFP_ATOMIC while atomic atl1c: Atheros L1C Gigabit Ethernet driver net: Kill skb_truesize_check(), it only catches false-positives. net: forcedeth: Fix wake-on-lan regression
| * | | | vlan: Update skb->mac_header in __vlan_put_tag().Jarek Poplawski2009-02-181-0/+1
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After moving mac addresses in __vlan_put_tag() skb->mac_header needs to be updated. Reported-by: Karl Hiramoto <karl@hiramoto.org> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | net: Kill skb_truesize_check(), it only catches false-positives.David S. Miller2009-02-172-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A long time ago we had bugs, primarily in TCP, where we would modify skb->truesize (for TSO queue collapsing) in ways which would corrupt the socket memory accounting. skb_truesize_check() was added in order to try and catch this error more systematically. However this debugging check has morphed into a Frankenstein of sorts and these days it does nothing other than catch false-positives. Signed-off-by: David S. Miller <davem@davemloft.net>
* | | | PM: Split up sysdev_[suspend|resume] from device_power_[down|up]Rafael J. Wysocki2009-02-221-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the sysdev_suspend/resume from the callee to the callers, with no real change in semantics, so that we can rework the disabling of interrupts during suspend/hibernation. This is based on an earlier patch from Linus. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'hibernate'Linus Torvalds2009-02-211-0/+2
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * hibernate: PM: Fix suspend_console and resume_console to use only one semaphore PM: Wait for console in resume PM: Fix pm_notifiers during user mode hibernation swsusp: clean up shrink_all_zones() swsusp: dont fiddle with swappiness PM: fix build for CONFIG_PM unset PM/hibernate: fix "swap breaks after hibernation failures" PM/resume: wait for device probing to finish Consolidate driver_probe_done() loops into one place
| * | | | Consolidate driver_probe_done() loops into one placeArjan van de Ven2009-02-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | there's a few places that currently loop over driver_probe_done(), and I'm about to add another one. This patch abstracts it into a helper to reduce duplication. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Len Brown <lenb@kernel.org> Acked-by: Greg KH <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | Merge branch 'drm-fixes' of ↵Linus Torvalds2009-02-203-6/+8
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (26 commits) drm/radeon: update sarea copies of last_ variables on resume. drm/i915: Keep refs on the object over the lifetime of vmas for GTT mmap. drm/i915: take struct mutex around fb unref drm: Use spread spectrum when the bios tells us it's ok. drm: Collapse identical i8xx_clock() and i9xx_clock(). drm: Bring PLL limits in sync with DDX values. drm: Add locking around cursor gem operations. drm: Propagate failure from setting crtc base. drm: Check for a NULL encoder when reverting on error path drm/i915: Cleanup the hws on ringbuffer constrution failure. drm/i915: Don't add panel_fixed_mode to the probed modes list at LVDS init. drm: Release user fbs in drm_release drm/i915: Unpin the fb on error during construction. drm/i915: Unpin the hws if we fail to kmap. drm/i915: Unpin the ringbuffer if we fail to ioremap it. drm/i915: unpin for an invalid memory domain. drm/i915: Release and unlock on mmap_gtt error path. drm/i915: Set framebuffer alignment based upon the fence constraints. drm: Do not leak a new reference for flink() on an existing name drm/i915: Fix potential AB-BA deadlock in i915_gem_execbuffer() ...
| * | | | | drm/i915: Keep refs on the object over the lifetime of vmas for GTT mmap.Jesse Barnes2009-02-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes potential fault at fault time if the object was unreferenced while the mapping still existed. Now, while the mmap_offset only lives for the lifetime of the object, the object also stays alive while a vma exists that needs it. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
generated by cgit (git 2.34.1) at 2024-11-19 14:28:19 +0000