reset_work() in nvme-pci may hang forever in the following scenario:
1) A reset caused by a command timeout occurs due to a controller being
temporarily irresponsive.
2) nvme_reset_work() restarts admin queue at nvme_alloc_admin_tags(). At
the same time, a user-submitted admin command is queued and waiting
for completion. Then, reset_work() changes its state to CONNECTING,
and submits an identify command.
3) However, the controller does still not respond to any command,
causing a timeout being fired at the user-submitted command.
Unfortunately, nvme_timeout() does not see the completion on cq, and
any timeout that takes place under CONNECTING state causes a
controller shutdown.
4) Normally, the identify command in reset_work() would be canceled with
SC_HOST_ABORTED by nvme_dev_disable(), then reset_work can tear down
the controller accordingly. But the controller happens to return
online and respond the identify command before nvme_dev_disable()
should have been reaped it off.
5) reset_work() continues to setup_io_queues() as it observes no error
in init_identify(). However, the admin queue has already been
quiesced in dev_disable(). Thus, any following commands would be
blocked forever in blk_execute_rq().
This can be fixed by restricting usercmd commands when controller is not
in a LIVE state in nvme_queue_rq(), as what has been done previously in
fabrics.
```
nvme_reset_work(): |
nvme_alloc_admin_tags() |
| nvme_submit_user_cmd():
nvme_init_identify(): | ...
__nvme_submit_sync_cmd(): |
... | ...
---------------------------------------> nvme_timeout():
(Controller starts reponding commands) | nvme_dev_disable(, true):
nvme_setup_io_queues(): |
__nvme_submit_sync_cmd(): |
(hung in blk_execute_rq |
since run_hw_queue sees |
queue quiesced) |
```
Signed-off-by: Tao Chiu <taochiu@synology.com>
Signed-off-by: Cody Wong <codywong@synology.com>
Reviewed-by: Leon Chien <leonchien@synology.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
There is a single trailing whitespace in pci.c.
Since this is just a single whitespace, the chances of this affecting
backports to stable should be quite low, so let's just remove it.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
According to the module parameter description for sgl_threshold,
a value of 0 means that SGLs are disabled.
If SGLs are disabled, we should respect that, even for the case
where the request is made up of a single physical segment.
Fixes: 297910571f ("nvme-pci: optimize mapping single segment requests using SGLs")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
All nvme transport drivers preallocate an nvme command for each request.
Assume to use that command for nvme_setup_cmd() instead of requiring
drivers pass a pointer to it. All nvme drivers must initialize the
generic nvme_request 'cmd' to point to the transport's preallocated
nvme_command.
The generic nvme_request cmd pointer had previously been used only as a
temporary copy for passthrough commands. Since it now points to the
command that gets dispatched, passthrough commands must directly set it
up prior to executing the request.
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Except for pci, all the nvme transport drivers allocate a command within
the driver's pdu. Align pci with everyone else by allocating the nvme
command within pci's pdu and replace the .queue_rq() stack variable with
this.
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This is a prep patch so that we can move the identify data structure
related code initialization from nvme_init_identify() into a helper.
Rename the function nvmet_init_identify() to nvmet_init_ctrl_finish().
Next patch will move the nvme_id_ctrl related initialization from newly
renamed function nvme_init_ctrl_finish() into the nvme_init_identify()
helper.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Get rid of a local variable that is not needed and just return the
status directly.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
The barriers were added to the nvme_irq() in commit 3a7afd8ee4
("nvme-pci: remove the CQ lock for interrupt driven queues") to prevent
compiler from doing memory optimization for the variabes that were
protected previously by spinlock in nvme_irq() at completion queue
processing and with queue head check condition.
The variable nvmeq->last_cq_head from those checks was removed in the
commit f6c4d97b0d ("nvme/pci: Remove last_cq_head") that was not
allwing poll queues from mistakenly triggering the spurious interrupt
detection.
Remove the barriers which were protecting the updates to the variables.
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Add the NVME_QUIRK_NO_NS_DESC_LIST and NVME_QUIRK_IGNORE_DEV_SUBNQN
quirks for this buggy device.
Reported and tested in https://bugs.mageia.org/show_bug.cgi?id=28417
Signed-off-by: Pascal Terjan <pterjan@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
My 2TB SKC2000 showed the exact same symptoms that were provided
in 538e4a8c57 ("nvme-pci: avoid the deepest sleep state on
Kingston A2000 SSDs"), i.e. a complete NVME lockup that needed
cold boot to get it back.
According to some sources, the A2000 is simply a rebadged
SKC2000 with a slightly optimized firmware.
Adding the SKC2000 PCI ID to the quirk list with the same workaround
as the A2000 made my laptop survive a 5 hours long Yocto bootstrap
buildfest which reliably triggered the SSD lockup previously.
Signed-off-by: Zoltán Böszörményi <zboszor@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Pull swiotlb updates from Konrad Rzeszutek Wilk:
"Two memory encryption related patches (SWIOTLB is enabled by default
for AMD-SEV):
- Add support for alignment so that NVME can properly work
- Keep track of requested DMA buffers length, as underlaying hardware
devices can trip SWIOTLB to bounce too much and crash the kernel
And a tiny fix to use proper APIs in drivers"
* 'stable/for-linus-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
swiotlb: Validate bounce size in the sync/unmap path
nvme-pci: set min_align_mask
swiotlb: respect min_align_mask
swiotlb: don't modify orig_addr in swiotlb_tbl_sync_single
swiotlb: refactor swiotlb_tbl_map_single
swiotlb: clean up swiotlb_tbl_unmap_single
swiotlb: factor out a nr_slots helper
swiotlb: factor out an io_tlb_offset helper
swiotlb: add a IO_TLB_SIZE define
driver core: add a min_align_mask field to struct device_dma_parameters
sdhci: stop poking into swiotlb internals
The PRP addressing scheme requires all PRP entries except for the
first one to have a zero offset into the NVMe controller pages (which
can be different from the Linux PAGE_SIZE). Use the min_align_mask
device parameter to ensure that swiotlb does not change the address
of the buffer modulo the device page size to ensure that the PRPs
won't be malformed.
Signed-off-by: Jianxiong Gao <jxgao@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jianxiong Gao <jxgao@google.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
-----BEGIN PGP SIGNATURE-----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=vx6U
-----END PGP SIGNATURE-----
Merge tag 'for-5.12/drivers-2021-02-17' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
- Remove the skd driver. It's been EOL for a long time (Damien)
- NVMe pull requests
- fix multipath handling of ->queue_rq errors (Chao Leng)
- nvmet cleanups (Chaitanya Kulkarni)
- add a quirk for buggy Amazon controller (Filippo Sironi)
- avoid devm allocations in nvme-hwmon that don't interact well
with fabrics (Hannes Reinecke)
- sysfs cleanups (Jiapeng Chong)
- fix nr_zones for multipath (Keith Busch)
- nvme-tcp crash fix for no-data commands (Sagi Grimberg)
- nvmet-tcp fixes (Sagi Grimberg)
- add a missing __rcu annotation (Christoph)
- failed reconnect fixes (Chao Leng)
- various tracing improvements (Michal Krakowiak, Johannes
Thumshirn)
- switch the nvmet-fc assoc_list to use RCU protection (Leonid
Ravich)
- resync the status codes with the latest spec (Max Gurtovoy)
- minor nvme-tcp improvements (Sagi Grimberg)
- various cleanups (Rikard Falkeborn, Minwoo Im, Chaitanya
Kulkarni, Israel Rukshin)
- Floppy O_NDELAY fix (Denis)
- MD pull request
- raid5 chunk_sectors fix (Guoqing)
- Use lore links (Kees)
- Use DEFINE_SHOW_ATTRIBUTE for nbd (Liao)
- loop lock scaling (Pavel)
- mtip32xx PCI fixes (Bjorn)
- bcache fixes (Kai, Dongdong)
- Misc fixes (Tian, Yang, Guoqing, Joe, Andy)
* tag 'for-5.12/drivers-2021-02-17' of git://git.kernel.dk/linux-block: (64 commits)
lightnvm: pblk: Replace guid_copy() with export_guid()/import_guid()
lightnvm: fix unnecessary NULL check warnings
nvme-tcp: fix crash triggered with a dataless request submission
block: Replace lkml.org links with lore
nbd: Convert to DEFINE_SHOW_ATTRIBUTE
nvme: add 48-bit DMA address quirk for Amazon NVMe controllers
nvme-hwmon: rework to avoid devm allocation
nvmet: remove else at the end of the function
nvmet: add nvmet_req_subsys() helper
nvmet: use min of device_path and disk len
nvmet: use invalid cmd opcode helper
nvmet: use invalid cmd opcode helper
nvmet: add helper to report invalid opcode
nvmet: remove extra variable in id-ns handler
nvmet: make nvmet_find_namespace() req based
nvmet: return uniform error for invalid ns
nvmet: set status to 0 in case for invalid nsid
nvmet-fc: add a missing __rcu annotation to nvmet_fc_tgt_assoc.queues
nvme-multipath: set nr_zones for zoned namespaces
nvmet-tcp: fix potential race of tcp socket closing accept_work
...
-----BEGIN PGP SIGNATURE-----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=os1E
-----END PGP SIGNATURE-----
Merge tag 'for-5.12/block-2021-02-17' of git://git.kernel.dk/linux-block
Pull core block updates from Jens Axboe:
"Another nice round of removing more code than what is added, mostly
due to Christoph's relentless pursuit of tech debt removal/cleanups.
This pull request contains:
- Two series of BFQ improvements (Paolo, Jan, Jia)
- Block iov_iter improvements (Pavel)
- bsg error path fix (Pan)
- blk-mq scheduler improvements (Jan)
- -EBUSY discard fix (Jan)
- bvec allocation improvements (Ming, Christoph)
- bio allocation and init improvements (Christoph)
- Store bdev pointer in bio instead of gendisk + partno (Christoph)
- Block trace point cleanups (Christoph)
- hard read-only vs read-only split (Christoph)
- Block based swap cleanups (Christoph)
- Zoned write granularity support (Damien)
- Various fixes/tweaks (Chunguang, Guoqing, Lei, Lukas, Huhai)"
* tag 'for-5.12/block-2021-02-17' of git://git.kernel.dk/linux-block: (104 commits)
mm: simplify swapdev_block
sd_zbc: clear zone resources for non-zoned case
block: introduce blk_queue_clear_zone_settings()
zonefs: use zone write granularity as block size
block: introduce zone_write_granularity limit
block: use blk_queue_set_zoned in add_partition()
nullb: use blk_queue_set_zoned() to setup zoned devices
nvme: cleanup zone information initialization
block: document zone_append_max_bytes attribute
block: use bi_max_vecs to find the bvec pool
md/raid10: remove dead code in reshape_request
block: mark the bio as cloned in bio_iov_bvec_set
block: set BIO_NO_PAGE_REF in bio_iov_bvec_set
block: remove a layer of indentation in bio_iov_iter_get_pages
block: turn the nr_iovecs argument to bio_alloc* into an unsigned short
block: remove the 1 and 4 vec bvec_slabs entries
block: streamline bvec_alloc
block: factor out a bvec_alloc_gfp helper
block: move struct biovec_slab to bio.c
block: reuse BIO_INLINE_VECS for integrity bvecs
...
Some Amazon NVMe controllers do not follow the NVMe specification
and are limited to 48-bit DMA addresses. Add a quirk to force
bounce buffering if needed and limit the IOVA allocation for these
devices.
This affects all current Amazon NVMe controllers that expose EBS
volumes (0x0061, 0x0065, 0x8061) and local instance storage
(0xcd00, 0xcd01, 0xcd02).
Signed-off-by: Filippo Sironi <sironi@amazon.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested both with Corsairs firmware 11.3 and 13.0 for the Corsairs MP600
and both have the issue as reported by the kernel.
nvme nvme0: missing or invalid SUBNQN field.
Signed-off-by: Claus Stovgaard <claus.stovgaard@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Properly unwind step by step using refactored helpers from nvme_unmap_data
to avoid a potential double dma_unmap on a mapping failure.
Fixes: 7fe07d14f7 ("nvme-pci: merge nvme_free_iod into nvme_unmap_data")
Reported-by: Marc Orr <marcorr@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Marc Orr <marcorr@google.com>
Split out three helpers from nvme_unmap_data that will allow finer grained
unwinding from nvme_map_data.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Marc Orr <marcorr@google.com>
Since NVMe v1.4 the Controller Memory Buffer must be explicitly enabled
by the host.
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
[hch: avoid a local variable and add a comment]
Signed-off-by: Christoph Hellwig <hch@lst.de>
While handling the completion queue, keep a local copy of the command id
from the DMA-accessible completion entry. This silences a time-of-check
to time-of-use (TOCTOU) warning from KF/x[1], with respect to a
Thunderclap[2] vulnerability analysis. The double-read impact appears
benign.
There may be a theoretical window for @command_id to be used as an
adversary-controlled array-index-value for mounting a speculative
execution attack, but that mitigation is saved for a potential follow-on.
A man-in-the-middle attack on the data payload is out of scope for this
analysis and is hopefully mitigated by filesystem integrity mechanisms.
[1] https://github.com/intel/kernel-fuzzer-for-xen-project
[2] http://thunderclap.io/thunderclap-paper-ndss2019.pdf
Signed-off-by: Lalithambika Krishna Kumar <lalithambika.krishnakumar@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
A system with more than one of these SSDs will only have one usable.
Hence the kernel fails to detect nvme devices due to duplicate cntlids.
[ 6.274554] nvme nvme1: Duplicate cntlid 33 with nvme0, rejecting
[ 6.274566] nvme nvme1: Removing after probe failure status: -22
Adding the NVME_QUIRK_IGNORE_DEV_SUBNQN quirk to resolves the issue.
Signed-off-by: Gopal Tiwari <gtiwari@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
-----BEGIN PGP SIGNATURE-----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=ayp2
-----END PGP SIGNATURE-----
Merge tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
"Nothing major in here:
- NVMe pull request from Christoph:
- nvmet passthrough improvements (Chaitanya Kulkarni)
- fcloop error injection support (James Smart)
- read-only support for zoned namespaces without Zone Append
(Javier González)
- improve some error message (Minwoo Im)
- reject I/O to offline fabrics namespaces (Victor Gladkov)
- PCI queue allocation cleanups (Niklas Schnelle)
- remove an unused allocation in nvmet (Amit Engel)
- a Kconfig spelling fix (Colin Ian King)
- nvme_req_qid simplication (Baolin Wang)
- MD pull request from Song:
- Fix race condition in md_ioctl() (Dae R. Jeong)
- Initialize read_slot properly for raid10 (Kevin Vigor)
- Code cleanup (Pankaj Gupta)
- md-cluster resync/reshape fix (Zhao Heming)
- Move null_blk into its own directory (Damien Le Moal)
- null_blk zone and discard improvements (Damien Le Moal)
- bcache race fix (Dongsheng Yang)
- Set of rnbd fixes/improvements (Gioh Kim, Guoqing Jiang, Jack Wang,
Lutz Pogrell, Md Haris Iqbal)
- lightnvm NULL pointer deref fix (tangzhenhao)
- sr in_interrupt() removal (Sebastian Andrzej Siewior)
- FC endpoint security support for s390/dasd (Jan Höppner, Sebastian
Ott, Vineeth Vijayan). From the s390 arch guys, arch bits included
as it made it easier for them to funnel the feature through the
block driver tree.
- Follow up fixes (Colin Ian King)"
* tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block: (64 commits)
block: drop dead assignments in loop_init()
sr: Remove in_interrupt() usage in sr_init_command().
sr: Switch the sector size back to 2048 if sr_read_sector() changed it.
cdrom: Reset sector_size back it is not 2048.
drivers/lightnvm: fix a null-ptr-deref bug in pblk-core.c
null_blk: Move driver into its own directory
null_blk: Allow controlling max_hw_sectors limit
null_blk: discard zones on reset
null_blk: cleanup discard handling
null_blk: Improve implicit zone close
null_blk: improve zone locking
block: Align max_hw_sectors to logical blocksize
null_blk: Fail zone append to conventional zones
null_blk: Fix zone size initialization
bcache: fix race between setting bdev state to none and new write request direct to backing
block/rnbd: fix a null pointer dereference on dev->blk_symlink_name
block/rnbd-clt: Dynamically alloc buffer for pathname & blk_symlink_name
block/rnbd: call kobject_put in the failure path
Documentation/ABI/rnbd-srv: add document for force_close
block/rnbd-srv: close a mapped device from server side.
...
currently the NVME_QUIRK_SHARED_TAGS quirk for Apple devices is handled
during the assignment of nr_io_queues in nvme_setup_io_queues().
This however means that for these devices nvme_max_io_queues() will
actually not return the supported maximum which is confusing and
unexpected and also means that in nvme_probe() we are allocating
for I/O queues that will never be used.
Fix this by moving the quirk handling into nvme_max_io_queues().
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
in nvme_setup_io_queues() the number of I/O queues is set to either 1 in
case of a quirky Apple device or to the min of nvme_max_io_queues() or
dev->nr_allocated_queues - 1.
This is unnecessarily complicated as dev->nr_allocated_queues is only
assigned once and is nvme_max_io_queues() + 1.
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Right now nvme_alloc_request() allocates a request from block layer
based on the value of the qid. When qid set to NVME_QID_ANY it used
blk_mq_alloc_request() else blk_mq_alloc_request_hctx().
The function nvme_alloc_request() is called from different context, The
only place where it uses non NVME_QID_ANY value is for fabrics connect
commands :-
nvme_submit_sync_cmd() NVME_QID_ANY
nvme_features() NVME_QID_ANY
nvme_sec_submit() NVME_QID_ANY
nvmf_reg_read32() NVME_QID_ANY
nvmf_reg_read64() NVME_QID_ANY
nvmf_reg_write32() NVME_QID_ANY
nvmf_connect_admin_queue() NVME_QID_ANY
nvme_submit_user_cmd() NVME_QID_ANY
nvme_alloc_request()
nvme_keep_alive() NVME_QID_ANY
nvme_alloc_request()
nvme_timeout() NVME_QID_ANY
nvme_alloc_request()
nvme_delete_queue() NVME_QID_ANY
nvme_alloc_request()
nvmet_passthru_execute_cmd() NVME_QID_ANY
nvme_alloc_request()
nvmf_connect_io_queue() QID
__nvme_submit_sync_cmd()
nvme_alloc_request()
With passthru nvme_alloc_request() now falls into the I/O fast path such
that blk_mq_alloc_request_hctx() is never gets called and that adds
additional branch check in fast path.
Split the nvme_alloc_request() into nvme_alloc_request() and
nvme_alloc_request_qid().
Replace each call of the nvme_alloc_request() with NVME_QID_ANY param
with a call to newly added nvme_alloc_request() without NVME_QID_ANY.
Replace a call to nvme_alloc_request() with QID param with a call to
newly added nvme_alloc_request() and nvme_alloc_request_qid()
based on the qid value set in the __nvme_submit_sync_cmd().
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This is purely a clenaup patch, add prefix NVME to the ADMIN_TIMEOUT to
make consistent with NVME_IO_TIMEOUT.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
The function nvme_alloc_request() is called from different context
(I/O and Admin queue) where callers do not consider the I/O timeout when
called from I/O queue context.
Update nvme_alloc_request() to set the default I/O and Admin timeout
value based on whether the queuedata is set or not.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
If Doorbell Buffer Config command fails even 'dev->dbbuf_dbs != NULL'
which means OACS indicates that NVME_CTRL_OACS_DBBUF_SUPP is set,
nvme_dbbuf_update_and_check_event() will check event even it's not been
successfully set.
This patch fixes mismatch among dbbuf for sq/cqs in case that dbbuf
command fails.
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Multiple CPUs may be mapped to the same hctx, allowing mulitple
submission contexts to attempt commit_rqs(). We need to verify we're
not writing the same doorbell value multiple times since that's a spec
violation.
Revert commit 54b2fcee1d.
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1878596
Reported-by: "B.L. Jones" <brandon.gustav@googlemail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Like commit 5611ec2b98 ("nvme-pci: prevent SK hynix PC400 from using
Write Zeroes command"), Sandisk Skyhawk has the same issue:
[ 6305.633887] blk_update_request: operation not supported error, dev nvme0n1, sector 340812032 op 0x9:(WRITE_ZEROES) flags 0x0 phys_seg 0 prio class 0
So also disable Write Zeroes command on Sandisk Skyhawk.
BugLink: https://bugs.launchpad.net/bugs/1899503
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
-----BEGIN PGP SIGNATURE-----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=xE9E
-----END PGP SIGNATURE-----
Merge tag 'drivers-5.10-2020-10-12' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
"Here are the driver updates for 5.10.
A few SCSI updates in here too, in coordination with Martin as they
depend on core block changes for the shared tag bitmap.
This contains:
- NVMe pull requests via Christoph:
- fix keep alive timer modification (Amit Engel)
- order the PCI ID list more sensibly (Andy Shevchenko)
- cleanup the open by controller helper (Chaitanya Kulkarni)
- use an xarray for the CSE log lookup (Chaitanya Kulkarni)
- support ZNS in nvmet passthrough mode (Chaitanya Kulkarni)
- fix nvme_ns_report_zones (Christoph Hellwig)
- add a sanity check to nvmet-fc (James Smart)
- fix interrupt allocation when too many polled queues are
specified (Jeffle Xu)
- small nvmet-tcp optimization (Mark Wunderlich)
- fix a controller refcount leak on init failure (Chaitanya
Kulkarni)
- misc cleanups (Chaitanya Kulkarni)
- major refactoring of the scanning code (Christoph Hellwig)
- MD updates via Song:
- Bug fixes in bitmap code, from Zhao Heming
- Fix a work queue check, from Guoqing Jiang
- Fix raid5 oops with reshape, from Song Liu
- Clean up unused code, from Jason Yan
- Discard improvements, from Xiao Ni
- raid5/6 page offset support, from Yufen Yu
- Shared tag bitmap for SCSI/hisi_sas/null_blk (John, Kashyap,
Hannes)
- null_blk open/active zone limit support (Niklas)
- Set of bcache updates (Coly, Dongsheng, Qinglang)"
* tag 'drivers-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (78 commits)
md/raid5: fix oops during stripe resizing
md/bitmap: fix memory leak of temporary bitmap
md: fix the checking of wrong work queue
md/bitmap: md_bitmap_get_counter returns wrong blocks
md/bitmap: md_bitmap_read_sb uses wrong bitmap blocks
md/raid0: remove unused function is_io_in_chunk_boundary()
nvme-core: remove extra condition for vwc
nvme-core: remove extra variable
nvme: remove nvme_identify_ns_list
nvme: refactor nvme_validate_ns
nvme: move nvme_validate_ns
nvme: query namespace identifiers before adding the namespace
nvme: revalidate zone bitmaps in nvme_update_ns_info
nvme: remove nvme_update_formats
nvme: update the known admin effects
nvme: set the queue limits in nvme_update_ns_info
nvme: remove the 0 lba_shift check in nvme_update_ns_info
nvme: clean up the check for too large logic block sizes
nvme: freeze the queue over ->lba_shift updates
nvme: factor out a nvme_configure_metadata helper
...
One queue will be reserved for non-polled IO when nvme.poll_queues is
greater or equal than the number of IO queues that the nvme controller
can provide. Currently the reserved queue for non-polled IO will reuse
the interrupt used by admin queue in this case, e.g, vector 0.
This can work and the performance may not be an issue since the admin
queue is used unfrequently. However this behaviour may be inconsistent
with that when nvme.poll_queues is smaller than the number of IO
queues available.
Thus allocate separate interrupt for this reserved queue, and thus make
the behaviour consistent.
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
[hch: minor cleanups, mostly to the pre-existing surrounding code]
Signed-off-by: Christoph Hellwig <hch@lst.de>
It's unusual that we have enumeration by class in the middle of the table.
It might potentially be problematic in the future if we add another entry
after it.
So, move class matching entry to be the last in the ID table.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
-----BEGIN PGP SIGNATURE-----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=e8oA
-----END PGP SIGNATURE-----
Merge tag 'block-5.9-2020-09-25' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"NVMe pull request from Christoph, and removal of a dead define.
- fix error during controller probe that cause double free irqs
(Keith Busch)
- FC connection establishment fix (James Smart)
- properly handle completions for invalid tags (Xianting Tian)
- pass the correct nsid to the command effects and supported log
(Chaitanya Kulkarni)"
* tag 'block-5.9-2020-09-25' of git://git.kernel.dk/linux-block:
block: remove unused BLK_QC_T_EAGAIN flag
nvme-core: don't use NVME_NSID_ALL for command effects and supported log
nvme-fc: fail new connections to a deleted host or remote port
nvme-pci: fix NULL req in completion handler
nvme: return errors for hwmon init
-----BEGIN PGP SIGNATURE-----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=zT03
-----END PGP SIGNATURE-----
Merge tag 'block-5.9-2020-09-22' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few NVMe fixes, and a dasd write zero fix"
* tag 'block-5.9-2020-09-22' of git://git.kernel.dk/linux-block:
nvmet: get transport reference for passthru ctrl
nvme-core: get/put ctrl and transport module in nvme_dev_open/release()
nvme-tcp: fix kconfig dependency warning when !CRYPTO
nvme-pci: disable the write zeros command for Intel 600P/P3100
s390/dasd: Fix zero write for FBA devices
Currently, we use nvmeq->q_depth as the upper limit for a valid tag in
nvme_handle_cqe(), it is not correct. Because the available tag number
is recorded in tagset, which is not equal to nvmeq->q_depth.
The nvme driver registers interrupts for queues before initializing the
tagset, because it uses the number of successful request_irq() calls to
configure the tagset parameters. This allows a race condition with the
current tag validity check if the controller happens to produce an
interrupt with a corrupted CQE before the tagset is initialized.
Replace the driver's indirect tag check with the one already provided by
the block layer.
Signed-off-by: Xianting Tian <tian.xianting@h3c.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
-----BEGIN PGP SIGNATURE-----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=8fvz
-----END PGP SIGNATURE-----
Merge tag 'block-5.9-2020-09-04' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A bit larger than usual this week, mostly due to the NVMe fixes
arriving late for -rc3 and hence didn't make last weeks pull request.
- NVMe:
- instance leak and io boundary fixes from Keith
- fc locking fix from Christophe
- various tcp/rdma reset during traffic fixes from Sagi
- pci use-after-free fix from Tong
- tcp target null deref fix from Ziye
- Locking fix for partition removal (Christoph)
- Ensure bdi->io_pages is always set (me)
- Fixup for hd struct reference (Ming)
- Fix for zero length bvecs (Ming)
- Two small blk-iocost fixes (Tejun)"
* tag 'block-5.9-2020-09-04' of git://git.kernel.dk/linux-block:
block: allow for_each_bvec to support zero len bvec
blk-stat: make q->stats->lock irqsafe
blk-iocost: ioc_pd_free() shouldn't assume irq disabled
block: fix locking in bdev_del_partition
block: release disk reference in hd_struct_free_work
block: ensure bdi->io_pages is always initialized
nvme-pci: cancel nvme device request before disabling
nvme: only use power of two io boundaries
nvme: fix controller instance leak
nvmet-fc: Fix a missed _irqsave version of spin_lock in 'nvmet_fc_fod_op_done()'
nvme: Fix NULL dereference for pci nvme controllers
nvme-rdma: fix reset hang if controller died in the middle of a reset
nvme-rdma: fix timeout handler
nvme-rdma: serialize controller teardown sequences
nvme-tcp: fix reset hang if controller died in the middle of a reset
nvme-tcp: fix timeout handler
nvme-tcp: serialize controller teardown sequences
nvme: have nvme_wait_freeze_timeout return if it timed out
nvme-fabrics: don't check state NVME_CTRL_NEW for request acceptance
nvmet-tcp: Fix NULL dereference when a connect data comes in h2cdata pdu
-----BEGIN PGP SIGNATURE-----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=fAwK
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.9-2020-08-23' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request from Sagi:
- nvme completion rework from Christoph and Chao that mostly came
from a bit of divergence of how we classify errors related to
pathing/retry etc.
- nvmet passthru fixes from Chaitanya
- minor nvmet fixes from Amit and I
- mpath round-robin path selection fix from Martin
- ignore noiob for zoned devices from Keith
- minor nvme-fc fix from Tianjia"
- BFQ cgroup leak fix (Dmitry)
- block layer MAINTAINERS addition (Geert)
- fix null_blk FUA checking (Hou)
- get_max_io_size() size fix (Keith)
- fix block page_is_mergeable() for compound pages (Matthew)
- discard granularity fixes (Ming)
- IO scheduler ordering fix (Ming)
- misc fixes
* tag 'io_uring-5.9-2020-08-23' of git://git.kernel.dk/linux-block: (31 commits)
null_blk: fix passing of REQ_FUA flag in null_handle_rq
nvmet: Disable keep-alive timer when kato is cleared to 0h
nvme: redirect commands on dying queue
nvme: just check the status code type in nvme_is_path_error
nvme: refactor command completion
nvme: rename and document nvme_end_request
nvme: skip noiob for zoned devices
nvme-pci: fix PRP pool size
nvme-pci: Use u32 for nvme_dev.q_depth and nvme_queue.q_depth
nvme: Use spin_lock_irq() when taking the ctrl->lock
nvmet: call blk_mq_free_request() directly
nvmet: fix oops in pt cmd execution
nvmet: add ns tear down label for pt-cmd handling
nvme: multipath: round-robin: eliminate "fallback" variable
nvme: multipath: round-robin: fix single non-optimized path case
nvme-fc: Fix wrong return value in __nvme_fc_init_request()
nvmet-passthru: Reject commands with non-sgl flags set
nvmet: fix a memory leak
blkcg: fix memleak for iolatency
MAINTAINERS: Add missing header files to BLOCK LAYER section
...
nvme_end_request is a bit misnamed, as it wraps around the
blk_mq_complete_* API. It's semantics also are non-trivial, so give it
a more descriptive name and add a comment explaining the semantics.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
All operations are based on the controller, not the host page size.
Switch the dma pool to use the controller page size as well to avoid
massive overallocations on large page size systems.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
-----BEGIN PGP SIGNATURE-----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=oADH
-----END PGP SIGNATURE-----
Merge tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
- NVMe:
- ZNS support (Aravind, Keith, Matias, Niklas)
- Misc cleanups, optimizations, fixes (Baolin, Chaitanya, David,
Dongli, Max, Sagi)
- null_blk zone capacity support (Aravind)
- MD:
- raid5/6 fixes (ChangSyun)
- Warning fixes (Damien)
- raid5 stripe fixes (Guoqing, Song, Yufen)
- sysfs deadlock fix (Junxiao)
- raid10 deadlock fix (Vitaly)
- struct_size conversions (Gustavo)
- Set of bcache updates/fixes (Coly)
* tag 'for-5.9/drivers-20200803' of git://git.kernel.dk/linux-block: (117 commits)
md/raid5: Allow degraded raid6 to do rmw
md/raid5: Fix Force reconstruct-write io stuck in degraded raid5
raid5: don't duplicate code for different paths in handle_stripe
raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_show
md: print errno in super_written
md/raid5: remove the redundant setting of STRIPE_HANDLE
md: register new md sysfs file 'uuid' read-only
md: fix max sectors calculation for super 1.0
nvme-loop: remove extra variable in create ctrl
nvme-loop: set ctrl state connecting after init
nvme-multipath: do not fall back to __nvme_find_path() for non-optimized paths
nvme-multipath: fix logic for non-optimized paths
nvme-rdma: fix controller reset hang during traffic
nvme-tcp: fix controller reset hang during traffic
nvmet: introduce the passthru Kconfig option
nvmet: introduce the passthru configfs interface
nvmet: Add passthru enable/disable helpers
nvmet: add passthru code to process commands
nvme: export nvme_find_get_ns() and nvme_put_ns()
nvme: introduce nvme_ctrl_get_by_path()
...
Tao Chiu