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2017-03-21nvme-loop: handle cpu unplug when re-establishing the controllerSagi Grimberg
If a cpu unplug event has occured, we need to take the minimum of the provided nr_io_queues and the number of online cpus, otherwise we won't be able to connect them as blk-mq mapping won't dispatch to those queues. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2017-03-21nvme-rdma: handle cpu unplug when re-establishing the controllerSagi Grimberg
If a cpu unplug event has occured, we need to take the minimum of the provided nr_io_queues and the number of online cpus, otherwise we won't be able to connect them as blk-mq mapping won't dispatch to those queues. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2017-03-16nvmet-rdma: Fix a possible uninitialized variable dereferenceSagi Grimberg
When handling a new recv command, we grab a new rsp resource and check for the queue state being live. In case the queue is not in live state, we simply restore the rsp back to the free list. However in this flow we didn't set rsp->queue yet, so we cannot dereference it. Instead, make sure to initialize rsp->queue (and other rsp members) as soon as possible so we won't reference uninitialized variables. Reported-by: Yi Zhang <yizhan@redhat.com> Reported-by: Raju Rangoju <rajur@chelsio.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Raju Rangoju <rajur@chelsio.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2017-03-16nvmet: confirm sq percpu has scheduled and switched to atomicSagi Grimberg
percpu_ref_kill is not enough to prevent subsequent percpu_ref_tryget_live from failing. Hence call perfcpu_ref_kill_confirm to make it safe. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2017-03-16nvme-loop: fix a possible use-after-free when destroying the admin queueSagi Grimberg
we need to destroy the nvmet sq and let it finish gracefully before continue to cleanup the queue. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2017-03-03Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block layer fixes from Jens Axboe: "A collection of fixes for this merge window, either fixes for existing issues, or parts that were waiting for acks to come in. This pull request contains: - Allocation of nvme queues on the right node from Shaohua. This was ready long before the merge window, but waiting on an ack from Bjorn on the PCI bit. Now that we have that, the three patches can go in. - Two fixes for blk-mq-sched with nvmeof, which uses hctx specific request allocations. This caused an oops. One part from Sagi, one part from Omar. - A loop partition scan deadlock fix from Omar, fixing a regression in this merge window. - A three-patch series from Keith, closing up a hole on clearing out requests on shutdown/resume. - A stable fix for nbd from Josef, fixing a leak of sockets. - Two fixes for a regression in this window from Jan, fixing a problem with one of his earlier patches dealing with queue vs bdi life times. - A fix for a regression with virtio-blk, causing an IO stall if scheduling is used. From me. - A fix for an io context lock ordering problem. From me" * 'for-linus' of git://git.kernel.dk/linux-block: block: Move bdi_unregister() to del_gendisk() blk-mq: ensure that bd->last is always set correctly block: don't call ioc_exit_icq() with the queue lock held for blk-mq block: Initialize bd_bdi on inode initialization loop: fix LO_FLAGS_PARTSCAN hang nvme: Complete all stuck requests blk-mq: Provide freeze queue timeout blk-mq: Export blk_mq_freeze_queue_wait nbd: stop leaking sockets blk-mq: move update of tags->rqs to __blk_mq_alloc_request() blk-mq: kill blk_mq_set_alloc_data() blk-mq: make blk_mq_alloc_request_hctx() allocate a scheduler request blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset nvme: allocate nvme_queue in correct node PCI: add an API to get node from vector blk-mq: allocate blk_mq_tags and requests in correct node
2017-03-02nvme: Complete all stuck requestsKeith Busch
If the nvme driver is shutting down its controller, the drievr will not start the queues up again, preventing blk-mq's hot CPU notifier from making forward progress. To fix that, this patch starts a request_queue freeze when the driver resets a controller so no new requests may enter. The driver will wait for frozen after IO queues are restarted to ensure the queue reference can be reinitialized when nvme requests to unfreeze the queues. If the driver is doing a safe shutdown, the driver will wait for the controller to successfully complete all inflight requests so that we don't unnecessarily fail them. Once the controller has been disabled, the queues will be restarted to force remaining entered requests to end in failure so that blk-mq's hot cpu notifier may progress. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-03-02nvme: allocate nvme_queue in correct nodeShaohua Li
nvme_queue is per-cpu queue (mostly). Allocating it in node where blk-mq will use it. Signed-off-by: Shaohua Li <shli@fb.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-03-02sched/headers: Prepare to use <linux/rcuupdate.h> instead of ↵Ingo Molnar
<linux/rculist.h> in <linux/sched.h> We don't actually need the full rculist.h header in sched.h anymore, we will be able to include the smaller rcupdate.h header instead. But first update code that relied on the implicit header inclusion. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-02-27scripts/spelling.txt: add "embeded" pattern and fix typo instancesMasahiro Yamada
Fix typos and add the following to the scripts/spelling.txt: embeded||embedded Link: http://lkml.kernel.org/r/1481573103-11329-12-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-25Merge tag 'for-next-dma_ops' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull rdma DMA mapping updates from Doug Ledford: "Drop IB DMA mapping code and use core DMA code instead. Bart Van Assche noted that the ib DMA mapping code was significantly similar enough to the core DMA mapping code that with a few changes it was possible to remove the IB DMA mapping code entirely and switch the RDMA stack to use the core DMA mapping code. This resulted in a nice set of cleanups, but touched the entire tree and has been kept separate for that reason." * tag 'for-next-dma_ops' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (37 commits) IB/rxe, IB/rdmavt: Use dma_virt_ops instead of duplicating it IB/core: Remove ib_device.dma_device nvme-rdma: Switch from dma_device to dev.parent RDS: net: Switch from dma_device to dev.parent IB/srpt: Modify a debug statement IB/srp: Switch from dma_device to dev.parent IB/iser: Switch from dma_device to dev.parent IB/IPoIB: Switch from dma_device to dev.parent IB/rxe: Switch from dma_device to dev.parent IB/vmw_pvrdma: Switch from dma_device to dev.parent IB/usnic: Switch from dma_device to dev.parent IB/qib: Switch from dma_device to dev.parent IB/qedr: Switch from dma_device to dev.parent IB/ocrdma: Switch from dma_device to dev.parent IB/nes: Remove a superfluous assignment statement IB/mthca: Switch from dma_device to dev.parent IB/mlx5: Switch from dma_device to dev.parent IB/mlx4: Switch from dma_device to dev.parent IB/i40iw: Remove a superfluous assignment statement IB/hns: Switch from dma_device to dev.parent ...
2017-02-23nvme/pci: re-check security protocol support after resetScott Bauer
A device may change capabilities after each reset, e.g. due to a firmware upgrade. We should thus check for Security Send/Receive and OPAL support after each reset. Based on patches from Christoph and Keith. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme: detect NVMe controller in recent MacBooksDaniel Roschka
Adds support for detection of the NVMe controller found in the following recent MacBooks: - Retina MacBook 2016 (MacBook9,1) - 13" MacBook Pro 2016 without Touch Bar (MacBook13,1) - 13" MacBook Pro 2016 with Touch Bar (MacBook13,2) Signed-off-by: Daniel Roschka <danielroschka@phoenitydawn.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme-rdma: add support for host_traddrMax Gurtovoy
This will enable the user to control the specific interface for connection establishment in case the host has more than 1 interface under the same subnet. E.g: Host interfaces configured as: - ib0 1.1.1.1/16 - ib1 1.1.1.2/16 Target interfaces configured as: - ib0 1.1.1.3/16 (listener interface) - ib1 1.1.1.4/16 the following connect command will go through host iface ib0 (default): nvme connect -t rdma -n testsubsystem -a 1.1.1.3 -s 1023 but the following command will go through host iface ib1: nvme connect -t rdma -n testsubsystem -a 1.1.1.3 -s 1023 -w 1.1.1.2 Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvmet-rdma: Fix error handlingChristophe JAILLET
According to the preceeding goto, it is likely that 'out_destroy_sq' was expected here. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvmet-rdma: use nvme cm status helperMax Gurtovoy
Also remove redundant debug prints. Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme-rdma: move nvme cm status helper to .h fileMax Gurtovoy
This will enable the usage for nvme rdma target. Also move from a lookup array to a switch statement. Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme-fc: don't bother to validate ioccsz and iorcszJames Smart
Discovery controllers don't set the values. They are in reserved areas of the Identify Controller data structure. Given the cmd completed, the minimal capsule sizes are supported, so no need to check nqn to detect discovery controllers and special case validations. Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme/pci: No special case for queue busy on IOKeith Busch
This driver previously required we have a special check for IO submitted to nvme IO queues that are temporarily suspended. That is no longer necessary since blk-mq provides a quiesce, so any IO that actually gets submitted to such a queue must be ended since the queue isn't going to start back up. This is fixing a condition where we have fewer IO queues after a controller reset. This may happen if the number of CPU's has changed, or controller firmware update changed the queue count, for example. While it may be possible to complete the IO on a different queue, the block layer does not provide a way to resubmit a request on a different hardware context once the request has entered the queue. We don't want these requests to be stuck indefinitely either, so ending them in error is our only option at the moment. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme/core: Fix race kicking freed request_queueKeith Busch
If a namespace has already been marked dead, we don't want to kick the request_queue again since we may have just freed it from another thread. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme/pci: Disable on removal when disconnectedKeith Busch
If the device is not present, the driver should disable the queues immediately. Prior to this, the driver was relying on the watchdog timer to kill the queues if requests were outstanding to the device, and that just delays removal up to one second. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme: Enable autonomous power state transitionsAndy Lutomirski
NVMe devices can advertise multiple power states. These states can be either "operational" (the device is fully functional but possibly slow) or "non-operational" (the device is asleep until woken up). Some devices can automatically enter a non-operational state when idle for a specified amount of time and then automatically wake back up when needed. The hardware configuration is a table. For each state, an entry in the table indicates the next deeper non-operational state, if any, to autonomously transition to and the idle time required before transitioning. This patch teaches the driver to program APST so that each successive non-operational state will be entered after an idle time equal to 100% of the total latency (entry plus exit) associated with that state. The maximum acceptable latency is controlled using dev_pm_qos (e.g. power/pm_qos_latency_tolerance_us in sysfs); non-operational states with total latency greater than this value will not be used. As a special case, setting the latency tolerance to 0 will disable APST entirely. On hardware without APST support, the sysfs file will not be exposed. The latency tolerance for newly-probed devices is set by the module parameter nvme_core.default_ps_max_latency_us. In theory, the device can expose "default" APST table, but this doesn't seem to function correctly on my device (Samsung 950), nor does it seem particularly useful. There is also an optional mechanism by which a configuration can be "saved" so it will be automatically loaded on reset. This can be configured from userspace, but it doesn't seem useful to support in the driver. On my laptop, enabling APST seems to save nearly 1W. The hardware tables can be decoded in userspace with nvme-cli. 'nvme id-ctrl /dev/nvmeN' will show the power state table and 'nvme get-feature -f 0x0c -H /dev/nvme0' will show the current APST configuration. This feature is quirked off on a known-buggy Samsung device. Signed-off-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme: Add a quirk mechanism that uses identify_ctrlAndy Lutomirski
Currently, all NVMe quirks are based on PCI IDs. Add a mechanism to define quirks based on identify_ctrl's vendor id, model number, and/or firmware revision. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme: make nvmf_register_transport require a create_ctrl callbackJohannes Thumshirn
nvmf_create_ctrl() relys on the presence of a create_crtl callback in the registered nvmf_transport_ops, so make nvmf_register_transport require one. Update the available call-sites as well to reflect these changes. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme: Use CNS as 8-bit field and avoid endianness conversionParav Pandit
This patch defines CNS field as 8-bit field and avoids cpu_to/from_le conversions. Also initialize nvme_command cns value explicitly to NVME_ID_CNS_NS for readability (don't rely on the fact that NVME_ID_CNS_NS = 0). Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme: add semicolon in nvme_command settingMax Gurtovoy
Reviewed-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvmet: avoid dereferencing nvmet_reqMax Gurtovoy
No need to dereference req twice to get the cmd when we already have it stored in a local variable. Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme: Make controller state visible via sysfsSagi Grimberg
Easier for debugging and testing state machine transitions. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvmet: Make cntlid globally uniqueSagi Grimberg
We usually log the cntlid which is confusing in case we have multiple subsystems each with it's own cntlid ida. Instead make cntlid ida globally unique and log the initial association. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvmet_fc: cleanup of abort flag processing in fcp_op_doneJames Smart
Cleanup of abort flag processing in fcp_op_done. References were unnecessary Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-22nvme: admin-cmd: fix spelling mistake: "Counld" -> "Could"Colin Ian King
trivial fix to spelling mistake in pr_err message Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-17Merge branch 'for-4.11/next' into for-4.11/linus-mergeJens Axboe
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-17Merge branch 'for-4.11/block' into for-4.11/linus-mergeJens Axboe
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-17nvme: Check for Security send/recv support before issuing commands.Scott Bauer
We need to verify that the controller supports the security commands before actually trying to issue them. Signed-off-by: Scott Bauer <scott.bauer@intel.com> [hch: moved the check so that we don't call into the OPAL code if not supported] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-17block/sed-opal: allocate struct opal_dev dynamicallyChristoph Hellwig
Insted of bloating the containing structure with it all the time this allocates struct opal_dev dynamically. Additionally this allows moving the definition of struct opal_dev into sed-opal.c. For this a new private data field is added to it that is passed to the send/receive callback. After that a lot of internals can be made private as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Scott Bauer <scott.bauer@intel.com> Reviewed-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-14Move stack parameters for sed_ioctl to prevent oversized stack with CONFIG_KASANScott Bauer
When CONFIG_KASAN is enabled, compilation fails: block/sed-opal.c: In function 'sed_ioctl': block/sed-opal.c:2447:1: error: the frame size of 2256 bytes is larger than 2048 bytes [-Werror=frame-larger-than=] Moved all the ioctl structures off the stack and dynamically allocate using _IOC_SIZE() Fixes: 455a7b238cd6 ("block: Add Sed-opal library") Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-08nvme: support ranged discard requestsChristoph Hellwig
NVMe supports up to 256 ranges per DSM command, so wire up support for ranged discards up to that limit. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-06nvme: Add Support for Opal: Unlock from S3 & Opal Allocation/IoctlsScott Bauer
This patch implements the necessary logic to unlock an Opal enabled device coming back from an S3. The patch also implements the SED/Opal allocation necessary to support the opal ioctls. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31block: fold cmd_type into the REQ_OP_ spaceChristoph Hellwig
Instead of keeping two levels of indirection for requests types, fold it all into the operations. The little caveat here is that previously cmd_type only applied to struct request, while the request and bio op fields were set to plain REQ_OP_READ/WRITE even for passthrough operations. Instead this patch adds new REQ_OP_* for SCSI passthrough and driver private requests, althought it has to add two for each so that we can communicate the data in/out nature of the request. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31block: introduce blk_rq_is_passthroughChristoph Hellwig
This can be used to check for fs vs non-fs requests and basically removes all knowledge of BLOCK_PC specific from the block layer, as well as preparing for removing the cmd_type field in struct request. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31nvme/pci: Don't mark IOD as aborted if abort wasn't sentKeith Busch
This patch sets the aborted flag only if an abort was sent, reducing excessive kernel message spamming for completed IO that wasn't actually aborted. Reported-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: use end_io callback instead of instanceMatias Bjørling
When the lightnvm core had the "gennvm" layer between the device and the target, there was a need for the core to be able to figure out which target it should send an end_io callback to. Leading to a "double" end_io, first for the media manager instance, and then for the target instance. Now that core and gennvm is merged, there is no longer a need for this, and a single end_io callback will do. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: add ioctls for vector I/OsMatias Bjørling
Enable user-space to issue vector I/O commands through ioctls. To issue a vector I/O, the ppa list with addresses is also required and must be mapped for the controller to access. For each ioctl, the result and status bits are returned as well, such that user-space can retrieve the open-channel SSD completion bits. The implementation covers the traditional use-cases of bad block management, and vectored read/write/erase. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Metadata implementation, test, and fixes. Signed-off-by: Simon A.F. Lund <slund@cnexlabs.com> Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: reduce number of nvm_id groups to oneMatias Bjørling
The number of configuration groups has been limited to one in current code, even if there is support for up to four. With the introduction of the open-channel SSD 1.3 specification, only a single group is exposed onwards. Reflect this in the nvm_id structure. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-31lightnvm: merge gennvm with coreMatias Bjørling
For the first iteration of Open-Channel SSDs, it was anticipated that there could be various media managers on top of an open-channel SSD, such to allow vendors to plug in their own host-side FTLs, without the media manager in between. Now that an Open-Channel SSD is exposed as a traditional block device, there is no longer a need for this. Therefore lets merge the gennvm code with core and simplify the stack. Signed-off-by: Matias Bjørling <matias@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-30nvme/scsi: don't rely on BLK_MAX_CDBChristoph Hellwig
The NVMe SCSI emulation doesn't use BLOCK_PC requests, so BLK_MAX_CDB doesn't have a meaning for it. Instead opencode the value of 16 and refactor the code a bit so that related checks are next to each other and we only need to use the value in one place. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-29nvme: fix compilation of scsi componentJens Axboe
Since we moved the cdb parts and define out of the block proper, we need to include scsi/scsi_request.h for the nvme scsi layer. Fixes: 82ed4db499b8 ("block: split scsi_request out of struct request") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-27Merge branch 'for-4.11/block' into for-4.11/rq-refactorJens Axboe
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-26nvme-fc: use blk_rq_nr_phys_segmentsChristoph Hellwig
Without this deallocate won't work properly due to the mismatch of the bio/request size and the actual payload size. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
2017-01-26nvmet-rdma: Fix missing dma sync to nvme data structuresParav Pandit
This patch performs dma sync operations on nvme_command and nvme_completion. nvme_command is synced (a) on receiving of the recv queue completion for cpu access. (b) before posting recv wqe back to rdma adapter for device access. nvme_completion is synced (a) on receiving of the recv queue completion of associated nvme_command for cpu access. (b) before posting send wqe to rdma adapter for device access. This patch is generated for git://git.infradead.org/nvme-fabrics.git Branch: nvmf-4.10 Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 13:46:06 +0000