Naming the nvme helpers that wrap the block quiesce functionality
_start/_stop is rather confusing. Switch to using the quiesce naming
used by the block layer instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
In nvme_init_non_mdts_limits function we were returning 0 when kzalloc
failed; it now returns -ENOMEM.
Fixes: 5befc7c26e ("nvme: implement non-mdts command limits")
Signed-off-by: Joel Granados <j.granados@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Currently, if nvme_scan_ns_list fails, nvme_scan_work will fall back to
a sequential scan. nvme_scan_ns_list can fail for a variety of reasons,
e.g. a transient transport issue, and the resulting sequential scan can
be extremely expensive on controllers reporting an NN value close to the
maximum allowed (> 4 billion). Avoid sequential scans wherever possible
by only falling back to them in two cases:
- When the NVMe version supported (VS) value reported by the device is
older than NVME_VS(1, 1, 0), before which support of Identify NS List
not required.
- When the Identify NS List command fails with the DNR bit set in the
status. This is to accommodate (non-compliant) devices which report a
VS value which implies support for Identify NS List, but nevertheless
do not support the command. Such devices will most likely fail the
command with the DNR bit set.
The third case is when the device claims support for Identify NS List
but the command fails with DNR not set. In such cases, fallback to
sequential scan is potentially expensive and likely unnecessary, as a
retry of the list scan should succeed. So this change skips the fallback
in this third case.
Signed-off-by: Uday Shankar <ushankar@purestorage.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
We know exactly how many dhchap contexts we will need, there is no need
to hold a list that we need to protect with a mutex. Convert to
a dynamically allocated array. And dhchap_context access state is
maintained by the chap itself.
Make dhchap_auth_mutex protect only the ctrl host_key and ctrl_key
in a fine-grained lock such that there is no long lasting acquisition
of the lock and no need to take/release this lock when flushing
authentication works.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Now that the chap context is reset upon completion, this is no longer
needed. Also remove nvme_auth_reset as no callers are left.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
We want to guarantee that we have chap buffers when a controller
reconnects under memory pressure. Add a mempool specifically
for that.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Replace ctrl ctrl_key/host_key only after nvme_auth_generate_key is successful.
Also, this fixes a bug where the keys are leaked.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
nvme_auth_generate_key can fail, don't ignore it upon initialization.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Allow the transport driver to override the attribute groups for the
control device, so that the PCIe driver doesn't manually have to add a
group after device creation and keep track of it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested-by Gerd Bayer <gbayer@linxu.ibm.com>
Nothing about the TCG Opal support is PCIe transport specific, so move it
to the core code. For this nvme_init_ctrl_finish grows a new
was_suspended argument that allows the transport driver to tell the OPAL
code if the controller came out of a suspend cycle.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: James Smart <jsmart2021@gmail.com>
Tested-by Gerd Bayer <gbayer@linxu.ibm.com>
nvme_passthrough_end can race with a reset, which can lead to
racing stores to the cels xarray as well as further shengians
with upcoming more complicated initialization.
So drop the call and just log that the controller capabilities
might have changed and a reset could be required to use the new
controller capabilities.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested-by Gerd Bayer <gbayer@linxu.ibm.com>
While the specification allows devices to either deallocate data
or to actually write zeroes on any Write Zeroes command, many SSDs
only do the sensible thing and deallocate data when the DEAC bit
is specific. Set it when it is supported and the caller doesn't
explicitly opt out of deallocation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver is spamming the kernel logs for entirely harmless errors from
user space submitting unsupported commands. Just silence the errors.
The application has direct access to command status, so there's no need
to log these.
And since every passthrough command now uses the quiet flag, move the
setting to the common initializer.
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Alan Adamson <alan.adamson@oracle.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Tested-by: Alan Adamson <alan.adamson@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
All controller namespaces share the same tagset, so we can use this
interface which does the optimal operation for parallel quiesce based on
the tagset type(e.g. blocking tagsets and non-blocking tagsets).
nvme connect_q should not be quiesced when quiesce tagset, so set the
QUEUE_FLAG_SKIP_TAGSET_QUIESCE to skip it when init connect_q.
Currently we use NVME_NS_STOPPED to ensure pairing quiescing and
unquiescing. If use blk_mq_[un]quiesce_tagset, NVME_NS_STOPPED will be
invalided, so introduce NVME_CTRL_STOPPED to replace NVME_NS_STOPPED.
In addition, we never really quiesce a single namespace. It is a better
choice to move the flag from ns to ctrl.
Signed-off-by: Chao Leng <lengchao@huawei.com>
[hch: rebased on top of prep patches]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Chao Leng <lengchao@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221101150050.3510-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Nothing in blk_mq_wait_quiesce_done needs the request_queue now, so just
pass the tagset, and move the non-mq check into the only caller that
needs it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chao Leng <lengchao@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221101150050.3510-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
nvme_kill_queues does two things:
1) mark the gendisk of all namespaces dead
2) unquiesce all I/O queues
These used to be be intertwined due to block layer issues, but aren't
any more. So move the unquiscing of the I/O queues into the callers,
and rename the rest of the function to the now more descriptive
nvme_mark_namespaces_dead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221101150050.3510-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
None of the callers of nvme_kill_queues needs it to unquiesce the
admin queues, as all of them already do it themselves:
1) nvme_reset_work explicit call nvme_start_admin_queue toward the
beginning of the function. The extra call to nvme_start_admin_queue
in nvme_reset_work this won't do anything as
NVME_CTRL_ADMIN_Q_STOPPED will already be cleared.
2) nvme_remove calls nvme_dev_disable with shutdown flag set to true at
the very beginning of the function if the PCIe device was not present,
which is the precondition for the call to nvme_kill_queues.
nvme_dev_disable already calls nvme_start_admin_queue toward the
end of the function when the shutdown flag is set to true, so the
admin queue is already enabled at this point.
3) nvme_remove_dead_ctrl schedules a workqueue to unbind the driver,
which will end up in nvme_remove, which calls nvme_dev_disable with
the shutdown flag. This case will call nvme_start_admin_queue a bit
later than before.
4) apple_nvme_remove uses the same sequence as nvme_remove_dead_ctrl
above.
5) nvme_remove_namespaces only calls nvme_kill_queues when the
controller is in the DEAD state. That can only happen in the PCIe
driver, and only from nvme_remove. See item 2) above for the
conditions there.
So it is safe to just remove the call to nvme_start_admin_queue in
nvme_kill_queues without replacement.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221101150050.3510-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
At the point where namespaces are marked dead, the controller is in a
non-live state and we won't get pass the identify commands.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221101150050.3510-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The NVME_NS_DEAD check only made sense when we revalidated namespaces
in nvme_passthrough_end for commands that affected the namespace inventory.
These days NVME_NS_DEAD is only set during reset or when tearing down
namespaces, and we always remove all namespaces right after that.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221101150050.3510-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The call to nvme_remove_invalid_namespaces made sense when
nvme_passthru_end revalidated all namespaces and had to remove those that
didn't exist any more. Since we don't revalidate from nvme_passthru_end
now, this call is entirely spurious.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221101150050.3510-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
nvme and xen-blkfront are already doing this to stop buffered writes from
creating dirty pages that can't be written out later. Move it to the
common code.
This also removes the comment about the ordering from nvme, as bd_mutex
not only is gone entirely, but also hasn't been used for locking updates
to the disk size long before that, and thus the ordering requirement
documented there doesn't apply any more.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Chao Leng <lengchao@huawei.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221101150050.3510-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The fact that blk_mq_destroy_queue also drops a queue reference leads
to various places having to grab an extra reference. Move the call to
blk_put_queue into the callers to allow removing the extra references.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Link: https://lore.kernel.org/r/20221018135720.670094-2-hch@lst.de
[axboe: fix fabrics_q vs admin_q conflict in nvme core.c]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
An NVMe controller works perfectly fine even when the hwmon
initialization fails. Stop returning errors that do not come from a
controller reset from nvme_hwmon_init to handle this case consistently.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
There is typo here so it releases the wrong variable. "ctrl->admin_q"
was intended instead of "ctrl->fabrics_q".
Fixes: fe60e8c534 ("nvme: add common helpers to allocate and free tagsets")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
-----BEGIN PGP SIGNATURE-----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=nwLk
-----END PGP SIGNATURE-----
Merge tag 'for-6.1/passthrough-2022-10-04' of git://git.kernel.dk/linux
Pull passthrough updates from Jens Axboe:
"With these changes, passthrough NVMe support over io_uring now
performs at the same level as block device O_DIRECT, and in many cases
6-8% better.
This contains:
- Add support for fixed buffers for passthrough (Anuj, Kanchan)
- Enable batched allocations and freeing on passthrough, similarly to
what we support on the normal storage path (me)
- Fix from Geert fixing an issue with !CONFIG_IO_URING"
* tag 'for-6.1/passthrough-2022-10-04' of git://git.kernel.dk/linux:
io_uring: Add missing inline to io_uring_cmd_import_fixed() dummy
nvme: wire up fixed buffer support for nvme passthrough
nvme: pass ubuffer as an integer
block: extend functionality to map bvec iterator
block: factor out blk_rq_map_bio_alloc helper
block: rename bio_map_put to blk_mq_map_bio_put
nvme: refactor nvme_alloc_request
nvme: refactor nvme_add_user_metadata
nvme: Use blk_rq_map_user_io helper
scsi: Use blk_rq_map_user_io helper
block: add blk_rq_map_user_io
io_uring: introduce fixed buffer support for io_uring_cmd
io_uring: add io_uring_cmd_import_fixed
nvme: enable batched completions of passthrough IO
nvme: split out metadata vs non metadata end_io uring_cmd completions
block: allow end_io based requests in the completion batch handling
block: change request end_io handler to pass back a return value
block: enable batched allocation for blk_mq_alloc_request()
block: kill deprecated BUG_ON() in the flush handling
-----BEGIN PGP SIGNATURE-----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=R05e
-----END PGP SIGNATURE-----
Merge tag 'for-6.1/block-2022-10-03' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- NVMe pull requests via Christoph:
- handle number of queue changes in the TCP and RDMA drivers
(Daniel Wagner)
- allow changing the number of queues in nvmet (Daniel Wagner)
- also consider host_iface when checking ip options (Daniel
Wagner)
- don't map pages which can't come from HIGHMEM (Fabio M. De
Francesco)
- avoid unnecessary flush bios in nvmet (Guixin Liu)
- shrink and better pack the nvme_iod structure (Keith Busch)
- add comment for unaligned "fake" nqn (Linjun Bao)
- print actual source IP address through sysfs "address" attr
(Martin Belanger)
- various cleanups (Jackie Liu, Wolfram Sang, Genjian Zhang)
- handle effects after freeing the request (Keith Busch)
- copy firmware_rev on each init (Keith Busch)
- restrict management ioctls to admin (Keith Busch)
- ensure subsystem reset is single threaded (Keith Busch)
- report the actual number of tagset maps in nvme-pci (Keith
Busch)
- small fabrics authentication fixups (Christoph Hellwig)
- add common code for tagset allocation and freeing (Christoph
Hellwig)
- stop using the request_queue in nvmet (Christoph Hellwig)
- set min_align_mask before calculating max_hw_sectors (Rishabh
Bhatnagar)
- send a rediscover uevent when a persistent discovery controller
reconnects (Sagi Grimberg)
- misc nvmet-tcp fixes (Varun Prakash, zhenwei pi)
- MD pull request via Song:
- Various raid5 fix and clean up, by Logan Gunthorpe and David
Sloan.
- Raid10 performance optimization, by Yu Kuai.
- sbitmap wakeup hang fixes (Hugh, Keith, Jan, Yu)
- IO scheduler switching quisce fix (Keith)
- s390/dasd block driver updates (Stefan)
- support for recovery for the ublk driver (ZiyangZhang)
- rnbd drivers fixes and updates (Guoqing, Santosh, ye, Christoph)
- blk-mq and null_blk map fixes (Bart)
- various bcache fixes (Coly, Jilin, Jules)
- nbd signal hang fix (Shigeru)
- block writeback throttling fix (Yu)
- optimize the passthrough mapping handling (me)
- prepare block cgroups to being gendisk based (Christoph)
- get rid of an old PSI hack in the block layer, moving it to the
callers instead where it belongs (Christoph)
- blk-throttle fixes and cleanups (Yu)
- misc fixes and cleanups (Liu Shixin, Liu Song, Miaohe, Pankaj,
Ping-Xiang, Wolfram, Saurabh, Li Jinlin, Li Lei, Lin, Li zeming,
Miaohe, Bart, Coly, Gaosheng
* tag 'for-6.1/block-2022-10-03' of git://git.kernel.dk/linux: (162 commits)
sbitmap: fix lockup while swapping
block: add rationale for not using blk_mq_plug() when applicable
block: adapt blk_mq_plug() to not plug for writes that require a zone lock
s390/dasd: use blk_mq_alloc_disk
blk-cgroup: don't update the blkg lookup hint in blkg_conf_prep
nvmet: don't look at the request_queue in nvmet_bdev_set_limits
nvmet: don't look at the request_queue in nvmet_bdev_zone_mgmt_emulate_all
blk-mq: use quiesced elevator switch when reinitializing queues
block: replace blk_queue_nowait with bdev_nowait
nvme: remove nvme_ctrl_init_connect_q
nvme-loop: use the tagset alloc/free helpers
nvme-loop: store the generic nvme_ctrl in set->driver_data
nvme-loop: initialize sqsize later
nvme-fc: use the tagset alloc/free helpers
nvme-fc: store the generic nvme_ctrl in set->driver_data
nvme-fc: keep ctrl->sqsize in sync with opts->queue_size
nvme-rdma: use the tagset alloc/free helpers
nvme-rdma: store the generic nvme_ctrl in set->driver_data
nvme-tcp: use the tagset alloc/free helpers
nvme-tcp: store the generic nvme_ctrl in set->driver_data
...
-----BEGIN PGP SIGNATURE-----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=m9kX
-----END PGP SIGNATURE-----
Merge tag 'for-6.1/io_uring-2022-10-03' of git://git.kernel.dk/linux
Pull io_uring updates from Jens Axboe:
- Add supported for more directly managed task_work running.
This is beneficial for real world applications that end up issuing
lots of system calls as part of handling work. Normal task_work will
always execute as we transition in and out of the kernel, even for
"unrelated" system calls. It's more efficient to defer the handling
of io_uring's deferred work until the application wants it to be run,
generally in batches.
As part of ongoing work to write an io_uring network backend for
Thrift, this has been shown to greatly improve performance. (Dylan)
- Add IOPOLL support for passthrough (Kanchan)
- Improvements and fixes to the send zero-copy support (Pavel)
- Partial IO handling fixes (Pavel)
- CQE ordering fixes around CQ ring overflow (Pavel)
- Support sendto() for non-zc as well (Pavel)
- Support sendmsg for zerocopy (Pavel)
- Networking iov_iter fix (Stefan)
- Misc fixes and cleanups (Pavel, me)
* tag 'for-6.1/io_uring-2022-10-03' of git://git.kernel.dk/linux: (56 commits)
io_uring/net: fix notif cqe reordering
io_uring/net: don't update msg_name if not provided
io_uring: don't gate task_work run on TIF_NOTIFY_SIGNAL
io_uring/rw: defer fsnotify calls to task context
io_uring/net: fix fast_iov assignment in io_setup_async_msg()
io_uring/net: fix non-zc send with address
io_uring/net: don't skip notifs for failed requests
io_uring/rw: don't lose short results on io_setup_async_rw()
io_uring/rw: fix unexpected link breakage
io_uring/net: fix cleanup double free free_iov init
io_uring: fix CQE reordering
io_uring/net: fix UAF in io_sendrecv_fail()
selftest/net: adjust io_uring sendzc notif handling
io_uring: ensure local task_work marks task as running
io_uring/net: zerocopy sendmsg
io_uring/net: combine fail handlers
io_uring/net: rename io_sendzc()
io_uring/net: support non-zerocopy sendto
io_uring/net: refactor io_setup_async_addr
io_uring/net: don't lose partial send_zc on fail
...
-----BEGIN PGP SIGNATURE-----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=SZZ1
-----END PGP SIGNATURE-----
Merge tag 'block-6.0-2022-09-29' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"A single NVMe pull request via Christoph with a few fixes that should
go into the 6.0 release:
- Fix IOC_PR_CLEAR and IOC_PR_RELEASE ioctls for nvme devices
(Michael Kelley)
- Disable Write Zeroes on Phison E3C/E4C (Tina Hsu)"
* tag 'block-6.0-2022-09-29' of git://git.kernel.dk/linux:
nvme-pci: disable Write Zeroes on Phison E3C/E4C
nvme: Fix IOC_PR_CLEAR and IOC_PR_RELEASE ioctls for nvme devices
Everything is just converted to returning RQ_END_IO_NONE, and there
should be no functional changes with this patch.
In preparation for allowing the end_io handler to pass ownership back
to the block layer, rather than retain ownership of the request.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
* for-6.1/block: (162 commits)
sbitmap: fix lockup while swapping
block: add rationale for not using blk_mq_plug() when applicable
block: adapt blk_mq_plug() to not plug for writes that require a zone lock
s390/dasd: use blk_mq_alloc_disk
blk-cgroup: don't update the blkg lookup hint in blkg_conf_prep
nvmet: don't look at the request_queue in nvmet_bdev_set_limits
nvmet: don't look at the request_queue in nvmet_bdev_zone_mgmt_emulate_all
blk-mq: use quiesced elevator switch when reinitializing queues
block: replace blk_queue_nowait with bdev_nowait
nvme: remove nvme_ctrl_init_connect_q
nvme-loop: use the tagset alloc/free helpers
nvme-loop: store the generic nvme_ctrl in set->driver_data
nvme-loop: initialize sqsize later
nvme-fc: use the tagset alloc/free helpers
nvme-fc: store the generic nvme_ctrl in set->driver_data
nvme-fc: keep ctrl->sqsize in sync with opts->queue_size
nvme-rdma: use the tagset alloc/free helpers
nvme-rdma: store the generic nvme_ctrl in set->driver_data
nvme-tcp: use the tagset alloc/free helpers
nvme-tcp: store the generic nvme_ctrl in set->driver_data
...
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add common helpers to allocate and tear down the admin and I/O tag sets,
including the special queues allocated with them.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
When a discovery controller is disconnected, no AENs will arrive to
notify the host about discovery log change events.
In order to solve this, send a uevent notification when a
persistent discovery controller reconnects. We add a new ctrl
flag NVME_CTRL_STARTED_ONCE that will be set on the first
start, and consecutive calls will find it set, and send the
event to userspace if the controller is a discovery controller.
Upon the event reception, userspace will re-read the discovery
log page and will act upon changes as it sees fit.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
The IOC_PR_CLEAR and IOC_PR_RELEASE ioctls are
non-functional on NVMe devices because the nvme_pr_clear()
and nvme_pr_release() functions set the IEKEY field incorrectly.
The IEKEY field should be set only when the key is zero (i.e,
not specified). The current code does it backwards.
Furthermore, the NVMe spec describes the persistent
reservation "clear" function as an option on the reservation
release command. The current implementation of nvme_pr_clear()
erroneously uses the reservation register command.
Fix these errors. Note that NVMe version 1.3 and later specify
that setting the IEKEY field will return an error of Invalid
Field in Command. The fix will set IEKEY when the key is zero,
which is appropriate as these ioctls consider a zero key to
be "unspecified", and the intention of the spec change is
to require a valid key.
Tested on a version 1.4 PCI NVMe device in an Azure VM.
Fixes: 1673f1f08c ("nvme: move block_device_operations and ns/ctrl freeing to common code")
Fixes: 1d277a637a ("NVMe: Add persistent reservation ops")
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
The firmware revision can change on after a reset so copy the most
recent info each time instead of just the first time, otherwise the
sysfs firmware_rev entry may contain stale data.
Reported-by: Jeff Lien <jeff.lien@wdc.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Chao Leng <lengchao@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
If a reset occurs after the scan work attempts to issue a command, the
reset may quisce the admin queue, which blocks the scan work's command
from dispatching. The scan work will not be able to complete while the
queue is quiesced.
Meanwhile, the reset work will cancel all outstanding admin tags and
wait until all requests have transitioned to idle, which includes the
passthrough request. But the passthrough request won't be set to idle
until after the scan_work flushes, so we're deadlocked.
Fix this by handling the end effects after the request has been freed.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216354
Reported-by: Jonathan Derrick <Jonathan.Derrick@solidigm.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chao Leng <lengchao@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Store a cookie during submission, and use that to implement
completion-polling inside the ->uring_cmd_iopoll handler.
This handler makes use of existing bio poll facility.
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://lore.kernel.org/r/20220823161443.49436-5-joshi.k@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.
Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Current "fake" nqn field is "nqn.2014.08.org.nvmexpress:", it is
not aligned with the canonical version for history reasons.
Signed-off-by: Linjun Bao <meljbao@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
-----BEGIN PGP SIGNATURE-----
iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmMbdksQHGF4Ym9lQGtl
cm5lbC5kawAKCRD301j7KXHgpqm8EACPqE5eFwFtZZnYV8eFjtTQCA5aZ+u3HyF8
Xby5FEZxwpRaaGPwUZ6T7A45ZVH5ka+JPvSQYeSTKxdjBVeqmAUVnlhqLjxeTvJt
WhfSCrPq553eYIKoeUVGxLfQ5GhK4f/2noiEMUIEOMSsDyh4txm46MRNdfi5doj1
2JlbJyoTIK0ZRoraAuZp07bZPFnbxtjSB9YJlUqyKpiSMbM+xocPRaB3Tpr42So8
vUdgt2/tDZ2xNOf4gd1KqUlosIlaG0RWeZeXTU9knrQjPYtB77iM6MVDUGhgiYT/
w25XYCbZiGt1YwRTOYFX9bE6jGuPDc54isRqCmPSjYwTAbeEd7sWytn5D1W0IkaF
dH93mDaW+8/GrjdGVCJ4jLPRCfQvZZ8i5XlwXaXQfnTQ8okUelx5BJ6kEfKRUkhV
nZD0r5MskH4dQv4ESluaeblrDWphMaznZLNjp+UXfiycsbE9l2TX1FOjyK9E7f7o
4zGYiertjc7wj0OnnoDTf0wdpXI13xDqQGFhe1Lnz4tOrpTfzZqwyv4IkFo3VghR
OocJFk4GSuKLwDPASDY/B+nynhQw5fft/fp458Q5pFY/2zItvmg2rxloFetUAz9i
0kcrO4NuO1l6E20KoBED2HMrQOow68dqcCJTrRcXhDfUIRIk0XSg4Kd/nGJBhZZS
5mv/hhkjjQ==
=3RZd
-----END PGP SIGNATURE-----
Merge tag 'block-6.0-2022-09-09' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull via Christoph:
- fix a use after free in nvmet (Bart Van Assche)
- fix a use after free when detecting digest errors
(Sagi Grimberg)
- fix regression that causes sporadic TCP requests to time out
(Sagi Grimberg)
- fix two off by ones errors in the nvmet ZNS support
(Dennis Maisenbacher)
- requeue aen after firmware activation (Keith Busch)
- Fix missing request flags in debugfs code (me)
- Partition scan fix (Ming)
* tag 'block-6.0-2022-09-09' of git://git.kernel.dk/linux-block:
block: add missing request flags to debugfs code
nvme: requeue aen after firmware activation
nvmet: fix mar and mor off-by-one errors
nvme-tcp: fix regression that causes sporadic requests to time out
nvme-tcp: fix UAF when detecting digest errors
nvmet: fix a use-after-free
block: don't add partitions if GD_SUPPRESS_PART_SCAN is set
The driver prevents async event work while handling a processing paused
event, but someone needs to restart it after the controller returns to a
live state.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216400
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
- convert arm32 to the common dma-direct code (Arnd Bergmann, Robin Murphy,
Christoph Hellwig)
- restructure the PCIe peer to peer mapping support (Logan Gunthorpe)
- allow the IOMMU code to communicate an optional DMA mapping length
and use that in scsi and libata (John Garry)
- split the global swiotlb lock (Tianyu Lan)
- various fixes and cleanup (Chao Gao, Dan Carpenter, Dongli Zhang,
Lukas Bulwahn, Robin Murphy)
-----BEGIN PGP SIGNATURE-----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=Bv19
-----END PGP SIGNATURE-----
Merge tag 'dma-mapping-5.20-2022-08-06' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- convert arm32 to the common dma-direct code (Arnd Bergmann, Robin
Murphy, Christoph Hellwig)
- restructure the PCIe peer to peer mapping support (Logan Gunthorpe)
- allow the IOMMU code to communicate an optional DMA mapping length
and use that in scsi and libata (John Garry)
- split the global swiotlb lock (Tianyu Lan)
- various fixes and cleanup (Chao Gao, Dan Carpenter, Dongli Zhang,
Lukas Bulwahn, Robin Murphy)
* tag 'dma-mapping-5.20-2022-08-06' of git://git.infradead.org/users/hch/dma-mapping: (45 commits)
swiotlb: fix passing local variable to debugfs_create_ulong()
dma-mapping: reformat comment to suppress htmldoc warning
PCI/P2PDMA: Remove pci_p2pdma_[un]map_sg()
RDMA/rw: drop pci_p2pdma_[un]map_sg()
RDMA/core: introduce ib_dma_pci_p2p_dma_supported()
nvme-pci: convert to using dma_map_sgtable()
nvme-pci: check DMA ops when indicating support for PCI P2PDMA
iommu/dma: support PCI P2PDMA pages in dma-iommu map_sg
iommu: Explicitly skip bus address marked segments in __iommu_map_sg()
dma-mapping: add flags to dma_map_ops to indicate PCI P2PDMA support
dma-direct: support PCI P2PDMA pages in dma-direct map_sg
dma-mapping: allow EREMOTEIO return code for P2PDMA transfers
PCI/P2PDMA: Introduce helpers for dma_map_sg implementations
PCI/P2PDMA: Attempt to set map_type if it has not been set
lib/scatterlist: add flag for indicating P2PDMA segments in an SGL
swiotlb: clean up some coding style and minor issues
dma-mapping: update comment after dmabounce removal
scsi: sd: Add a comment about limiting max_sectors to shost optimal limit
ata: libata-scsi: cap ata_device->max_sectors according to shost->max_sectors
scsi: scsi_transport_sas: cap shost opt_sectors according to DMA optimal limit
...
Extend nvme_alloc_ns() and nvme_validate_ns() for unknown command-set as
well. Both are made to use a new helper (nvme_update_ns_info_cs_indep)
which is similar to nvme_update_ns_info but performs fewer operations
to get the generic interface up.
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
[hch: rebased on other refactoring patches]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add a little helper to check if a namespace should be marked read-only
that uses a new is_readonly flag in the nvme_ns_info structure.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Joel Granados <j.granados@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Change nvme_ns_scan to gather all information needed for generic
namespace setup into a nvme_ns_info structure. This structure is filled
from the Command Set Idependent Identify Namespace data structure if
it is available or else the legacy Identify namespace structure.
With that everything related to the NVM command set (and the ZNS command
set derived from it) can be encapsulated in the nvme_update_ns_info_block
function while keeping the rest of the namespace probing generic.
The downside is that we now always issue two Identify Namespace calls for
each probed namespace instead of usually just a single one previously.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Joel Granados <j.granados@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Check for multiple command set support early on an error out if is
not supported when a !NVM command set namespace is found. This
prepares for adding command set independent passthrough support.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Joel Granados <j.granados@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This shorter name much better fits what this function does in
the scanning process.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Joel Granados <j.granados@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
nvme_revalidate_zones can also return -ENODEV if e.g. zone sizes aren't
constant or not a power of two. In that case we should jump to marking
the gendisk hidden and only support pass through.
Fixes: 602e57c979 ("nvme: also mark passthrough-only namespaces ready in nvme_update_ns_info")
Reported-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Joel Granados <j.granados@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Commit 89b3d6e605 ("nvme: simplify the compat ioctl handling") removed
the initialization of compat_ioctl from the nvme block_device_operations
structures.
Presumably the expectation was that 32-bit ioctls would be directed
through the regular handler but this is not the case: failing to assign
.compat_ioctl actually means that the compat case is disabled entirely,
and any attempt to submit nvme ioctls from 32-bit userspace fails
outright with -ENOTTY.
For example:
% smartctl -x /dev/nvme0n1
[...]
Read NVMe Identify Controller failed: NVME_IOCTL_ADMIN_CMD: Inappropriate ioctl for device
The blkdev_compat_ptr_ioctl helper can be used to direct compat calls
through the main ioctl handler and makes things work again.
Fixes: 89b3d6e605 ("nvme: simplify the compat ioctl handling")
Signed-off-by: Nick Bowler <nbowler@draconx.ca>
Reviewed-by: Guixin Liu <kanie@linux.alibaba.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pass anagrpid as second argument. This is prep patch that allows reusing
this function for supporting unknown command sets.
Signed-off-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
