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2011-10-31dm: add persistent data libraryJoe Thornber
The persistent-data library offers a re-usable framework for the storage and management of on-disk metadata in device-mapper targets. It's used by the thin-provisioning target in the next patch and in an upcoming hierarchical storage target. For further information, please read Documentation/device-mapper/persistent-data.txt Signed-off-by: Joe Thornber <thornber@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm: add bufioMikulas Patocka
The dm-bufio interface allows you to do cached I/O on devices, holding recently-read blocks in memory and performing delayed writes. We don't use buffer cache or page cache already present in the kernel, because: * we need to handle block sizes larger than a page * we can't allocate memory to perform reads or we'd have deadlocks Currently, when a cache is required, we limit its size to a fraction of available memory. Usage can be viewed and changed in /sys/module/dm_bufio/parameters/ . The first user is thin provisioning, but more dm users are planned. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm: export dm get mdAlasdair G Kergon
Export dm_get_md() for the new thin provisioning target to use. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm table: add immutable featureAlasdair G Kergon
Introduce DM_TARGET_IMMUTABLE to indicate that the target type cannot be mixed with any other target type, and once loaded into a device, it cannot be replaced with a table containing a different type. The thin provisioning pool device will use this. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm table: add always writeable featureAlasdair G Kergon
Add a target feature flag DM_TARGET_ALWAYS_WRITEABLE to indicate that a target does not support read-only mode. The initial implementation of the thin provisioning target uses this. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm table: add singleton featureAlasdair G Kergon
Introduce the concept of a singleton table which contains exactly one target. If a target type sets the DM_TARGET_SINGLETON feature bit device-mapper will ensure that any table that includes that target contains no others. The thin provisioning pool target uses this. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm kcopyd: add dm_kcopyd_zero to zero an areaMikulas Patocka
This patch introduces dm_kcopyd_zero() to make it easy to use kcopyd to write zeros into the requested areas instead instead of copying. It is implemented by passing a NULL copying source to dm_kcopyd_copy(). The forthcoming thin provisioning target uses this. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm: remove superfluous smp_mbNamhyung Kim
Since set_current_state() contains a memory barrier in it, an additional barrier isn't needed. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm: use local printk ratelimitNamhyung Kim
printk_ratelimit() shares global ratelimiting state with all other subsystems, so its usage is discouraged. Instead, define and use dm's local state. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31dm table: propagate non rotational flagMandeep Singh Baines
Allow QUEUE_FLAG_NONROT to propagate up the device stack if all underlying devices are non-rotational. Tools like ureadahead will schedule IOs differently based on the rotational flag. With this patch, I see boot time go from 7.75 s to 7.46 s on my device. Suggested-by: J. Richard Barnette <jrbarnette@chromium.org> Signed-off-by: Mandeep Singh Baines <msb@chromium.org> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: Neil Brown <neilb@suse.de> Cc: Jens Axboe <jaxboe@fusionio.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: dm-devel@redhat.com Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-31Bluetooth: bfusb: Fix error path on firmware loadDavid Herrmann
When loading the usb-configuration we do not signal the end of configuration on memory allocation error. This patch moves the memory allocation to the top so every error path uses "goto error" now to correctly send the usb-ctrl message when detecting some error. This also replaces GFP_ATOMIC with GFP_KERNEL as we are allowed to sleep here. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-31Bluetooth: bcm203x: Use GFP_KERNEL in workqueueDavid Herrmann
A workqueue is allowed to sleep so we can safely use GFP_KERNEL instead of GFP_ATOMIC. This is still legacy code when the driver used timer BHs and not a worqueue. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-31Bluetooth: bcm203x: Fix race condition on disconnectDavid Herrmann
When disconnecting a bcm203x device we kill and destroy the usb-urb, however, there might still be a pending work-structure which resubmits the now invalid urb. To avoid this race condition, we simply set a shutdown-flag and synchronously kill the worker first. This also adds a comment to all schedule_work()s, as it is really not clear that they are used as replacement for short timers (which can be seen in the git history). Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-31Bluetooth: ath3k: Use GFP_KERNEL instead of GFP_ATOMICDavid Herrmann
We are allowed to sleep here so no need to use GFP_ATOMIC. The caller (ath3k_probe) calls request_firmware() which definitely sleeps. Hence, we should avoid using GFP_ATOMIC. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-31Bluetooth: Set HCI_MGMT flag only in read_controller_infoJohan Hedberg
The HCI_MGMT flag should only be set when user space requests the full controller information. This way we avoid potential issues with setting change events ariving before the actual read_controller_info command finishes. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-31Bluetooth: Increase HCI reset timeout in hci_dev_do_closeSzymon Janc
I've noticed that my CSR usb dongle was not working if it was plugged in when PC was booting. It looks like I get two HCI reset command complete events (see hcidump logs below). The root cause is reset called from off_timer. Timeout for this reset to complete is set to 250ms and my bt dongle requires more time for replying with command complete event. After that, chip seems to reply with reset command complete event for next non-reset command. Attached patch increase mentioned timeout to HCI_INIT_TIMEOUT, this value is already used for timeouting hci_reset_req in hci_dev_reset(). This might also be related to BT not working after suspend that was reported here some time ago. Hcidump log: 2011-09-12 23:13:27.379465 < HCI Command: Reset (0x03|0x0003) plen 0 2011-09-12 23:13:27.380797 > HCI Event: Command Complete (0x0e) plen 4 Reset (0x03|0x0003) ncmd 1 status 0x00 2011-09-12 23:13:27.380859 < HCI Command: Read Local Supported Features (0x04|0x000 3) plen 0 2011-09-12 23:13:27.760789 > HCI Event: Command Complete (0x0e) plen 4 Reset (0x03|0x0003) ncmd 1 status 0x00 2011-09-12 23:13:27.760831 < HCI Command: Read Local Version Information (0x04|0x00 01) plen 0 2011-09-12 23:13:27.764780 > HCI Event: Command Complete (0x0e) plen 12 Read Local Version Information (0x04|0x0001) ncmd 1 status 0x00 HCI Version: 1.1 (0x1) HCI Revision: 0x36f LMP Version: 1.1 (0x1) LMP Subversion: 0x36f Manufacturer: Cambridge Silicon Radio (10) Signed-off-by: Szymon Janc <szymon@janc.net.pl> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-10-31ASoC: Fix return value of wm5100_gpio_direction_out()Mark Brown
We can't just pass back the return value of snd_soc_update_bits() as it will be 1 if a bit changed rather than zero. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-10-31mlx4_core: Deprecate log_num_vlan module paramOr Gerlitz
Enable the maximum size (128) supported by the device for the shadow vlans table, ignoring the module parameter that overrides it. This table is only used by the IBoE control plane for setting a vlan index into an RC/UC QP context or UD Address Handle. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-31IB/mlx4: Don't set VLAN in IBoE WQEs' control segmentOr Gerlitz
There's no need to set the vlan-related fields in an IBoE send WQE control segment: - the vlan to be used by a UD QP is set in the datagram segment. - for GSI (CM) QP, all the headers down to 8021q and MAC are built by the software anyway. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-31IB/mlx4: Enable 4K mtu for IBoEOr Gerlitz
The IBoE port MTU is derived from the corresponding Ethernet netdevice MTU, which can support jumbo frames of 9K, and hence surely supports the max IB mtu of 4K. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-31RDMA/cxgb4: Mark QP in error before disabling the queue in firmwareTom Tucker
QPs need to be moved to error before telling the firwmare to shutdown the queue. Otherwise, the application can submit WRs that will never get fetched by the hardware and never flushed by the driver. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Acked-by: Steve Wise <swsie@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-31RDMA/cxgb4: Serialize calls to CQ's comp_handlerKumar Sanghvi
Commit 01e7da6ba53c ("RDMA/cxgb4: Make sure flush CQ entries are collected on connection close") introduced a potential problem where a CQ's comp_handler can get called simultaneously from different places in the iw_cxgb4 driver. This does not comply with Documentation/infiniband/core_locking.txt, which states that at a given point of time, there should be only one callback per CQ should be active. This problem was reported by Parav Pandit <Parav.Pandit@Emulex.Com>. Based on discussion between Parav Pandit and Steve Wise, this patch fixes the above problem by serializing the calls to a CQ's comp_handler using a spin_lock. Reported-by: Parav Pandit <Parav.Pandit@Emulex.Com> Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-31RDMA/cxgb3: Serialize calls to CQ's comp_handlerKumar Sanghvi
iw_cxgb3 has a potential problem where a CQ's comp_handler can get called simultaneously from different places in iw_cxgb3 driver. This does not comply with Documentation/infiniband/core_locking.txt, which states that at a given point of time, there should be only one callback per CQ should be active. Such problem was reported by Parav Pandit <Parav.Pandit@Emulex.Com> for iw_cxgb4 driver. Based on discussion between Parav Pandit and Steve Wise, this patch fixes the above problem by serializing the calls to a CQ's comp_handler using a spin_lock. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-31IB/qib: Fix issue with link states and QSFP cablesMitko Haralanov
Fix an issue where the link would come up after replugging a cable even if it has been DISABLED manually. Signed-off-by: Mitko Haralanov <mitko@qlogic.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-31x86, MCE: Use notifier chain only for MCE decodingBorislav Petkov
Drop the edac_mce custom hook in favor of the generic notifier mechanism. Also, do not log the error to mcelog if the notified agent was able to decode it. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31EDAC i7core: Use mce socketid for better compatibilityThomas Renninger
mce->socketid and cpu_data(mce->cpu).phys_proc_id are the same, compare with mce_setup (in mce.c): m->cpu = m->extcpu = smp_processor_id(); ... m->socketid = cpu_data(m->extcpu).phys_proc_id; This makes it easier for example for XEN patches to hook into the MCE subsystem. Compile tested on x86_64. Signed-off-by: Thomas Renninger <trenn@suse.de> CC: JBeulich@novell.com CC: linux-edac@vger.kernel.org CC: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31i7core_edac: Don't enable memory scrubbing for Xeon 35xxMauro Carvalho Chehab
Xeon 35xx doesn't mention memory scrub. It seems that only Xeon 55xx and above supports it. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31i7core_edac: Add scrubbing supportSamuel Gabrielsson
Add scrubbing support to i7core_edac, tested on intel Xeon L5638. Signed-off-by: Samuel Gabrielsson <samuel.gabrielsson@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31edac: Move edac main structs to include/linux/edac.hMauro Carvalho Chehab
As we'll need to use those structs for trace functions, they should be on a more public place. So, move struct mem_ctl_info & friends to edac.h. No functional changes on this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com>
2011-10-31i7core_edac: Fix oops when trying to inject errorsMauro Carvalho Chehab
Error injection needs the pci device 0:0. So, we need to revert this changeset: 79daef2099a02fed35747c23bad22f30441133ea. Tests need to be made to be sure that refcount won't be wrong as noticed before. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31i7core_edac: fix misuse of logical operation in place of bitopDavid Sterba
CC: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-10-31NFS: Remove no-op less-than-zero checks on unsigned variables.Chuck Lever
Introduced by commit 16b374ca "NFSv4.1: pnfs: filelayout: add driver's LAYOUTGET and GETDEVICEINFO infrastructure" (October 20, 2010). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-10-31NFS: Clean up nfs4_xdr_dec_secinfo()Chuck Lever
Clean up: Remove superfluous logic at the tail of nfs4_xdr_dec_secinfo() . Introduced by commit 5a5ea0d4 "NFS: Add secinfo procedure" (March 24, 2011). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-10-31NFS: Fix documenting comment for nfs_create_request()Chuck Lever
Clean up: the first parameter of nfs_create_request() has been incorrectly documented since time immemorial (OK, since before 2.6.12). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-10-31NFS4: fix cb_recallany decode errorPeng Tao
craa_type_mask is bitmap4 per RFC5661. We need to expect a length before extracting bitmap value. Cc: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-10-31nfs4: serialize layoutcommitPeng Tao
Current pnfs_layoutcommit_inode can not handle parallel layoutcommit. And as Trond suggested , there is no need for client to optimize for parallel layoutcommit. So add NFS_INO_LAYOUTCOMMITTING flag to mark inflight layoutcommit and serialize lalyoutcommit with it. Also mark_inode_dirty_sync if pnfs_layoutcommit_inode fails to issue layoutcommit. Reported-by: Vitaliy Gusev <gusev.vitaliy@nexenta.com> Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-10-31ext4: optimize locking for end_io extent conversionTheodore Ts'o
Now that we are doing the locking correctly, we need to grab the i_completed_io_lock() twice per end_io. We can clean this up by removing the structure from the i_complted_io_list, and use this as the locking mechanism to prevent ext4_flush_completed_IO() racing against ext4_end_io_work(), instead of clearing the EXT4_IO_END_UNWRITTEN in io->flag. In addition, if the ext4_convert_unwritten_extents() returns an error, we no longer keep the end_io structure on the linked list. This doesn't help, because it tends to lock up the file system and wedges the system. That's one way to call attention to the problem, but it doesn't help the overall robustness of the system. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2011-10-31MAINTAINERS: add ARM/FREESCALE IMX6 entryShawn Guo
It adds maintainer for ARM/FREESCALE IMX6. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31arm/imx: merge i.MX3 and i.MX6Sascha Hauer
The patch merges the build of imx3 and imx6. The Kconfig symbol ARCH_IMX_V6_V7 is introduced to replace ARCH_MX3 and ARCH_MX6. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31arm/imx6q: add suspend/resume supportShawn Guo
It adds suspend/resume support for imx6q. Signed-off-by: Anson Huang <b20788@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31arm/imx6q: add device tree machine supportShawn Guo
It adds generic device tree based machine support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31arm/imx6q: add smp and cpu hotplug supportShawn Guo
It adds smp and cpu hotplug support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31arm/imx6q: add core drivers clock, gpc, mmdc and srcShawn Guo
It adds a number of core drivers support for imx6q, including clock, General Power Controller (gpc), Multi Mode DDR Controller(mmdc) and System Reset Controller (src). Signed-off-by: Ranjani Vaidyanathan <ra5478@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31arm/imx: add gic_handle_irq functionShawn Guo
This is a plain translation of assembly gic irq handler to C function for CONFIG_MULTI_IRQ_HANDLER support on imx family. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31arm/imx6q: add core definitions and low-level debug uartShawn Guo
It adds the core definitions and low-level debug uart support for imx6q. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31arm/imx6q: add device tree sourceShawn Guo
It adds device tree source and documentation for imx6q platform. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2011-10-31Merge branch 'cross-platform/debug_ll' into imx/imx6qArnd Bergmann
Conflicts: arch/arm/Kconfig.debug
2011-10-31Merge branch 'imx/devel' into imx/imx6qArnd Bergmann
Conflicts: arch/arm/plat-mxc/include/mach/memory.h
2011-10-31Merge branch 'dt/gic' into imx/imx6qArnd Bergmann
2011-10-31Merge branch 'depends/rmk/devel-stable' into imx/imx6qArnd Bergmann
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