- 10 Apr, 2019 1 commit
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Yufen Yu authored
When doing re-add, we need to ensure rdev->mddev->pers is not NULL, which can avoid potential NULL pointer derefence in fallowing add_bound_rdev(). Fixes: a6da4ef8 ("md: re-add a failed disk") Cc: Xiao Ni <xni@redhat.com> Cc: NeilBrown <neilb@suse.com> Cc: <stable@vger.kernel.org> # 4.4+ Reviewed-by:
NeilBrown <neilb@suse.com> Signed-off-by:
Yufen Yu <yuyufen@huawei.com> Signed-off-by:
Song Liu <songliubraving@fb.com>
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- 09 Apr, 2019 1 commit
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Minwoo Im authored
zone_nr_conv module parameter was introduced by a commit ea2c18e1("null_blk: Add conventional zone configuration for zoned support"). This patch describes "zone_nr_conv" module parameter to the document. Reviewed-by:
Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by:
Minwoo Im <minwoo.im.dev@gmail.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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- 08 Apr, 2019 4 commits
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Ming Lei authored
Commit f6970f83 ("block: don't check if adjacent bvecs in one bio can be mergeable") changes bvec merge by only considering two bvecs from different bios. However, if the former bio doesn't inlcude any io bvec, then the following warning may be triggered: warning: ‘bvec.bv_offset’ may be used uninitialized in this function [-Wmaybe-uninitialized] In practice, it shouldn't be triggered. Fixes it by adding check on former bio, the check shouldn't add any cost given 'bio->bi_iter' can be hit in cache. Reported-by:
Ming Lei <ming.lei@redhat.com> Signed-off-by:
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Angelo Ruocco authored
Some of the comments in the bfq files had typos. This patch fixes them. Signed-off-by:
Angelo Ruocco <angeloruocco90@gmail.com> Signed-off-by:
Paolo Valente <paolo.valente@linaro.org> Signed-off-by:
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Hisao Tanabe authored
The 'def' local variable became unused after commit f382fb0b ("block: remove legacy IO schedulers"), let's remove it. Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Hisao Tanabe <xtanabe@gmail.com> Signed-off-by:
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Dongli Zhang authored
Use HCTX_TYPE_DEFAULT instead of 0 to avoid hardcoding. Signed-off-by:
Dongli Zhang <dongli.zhang@oracle.com> Signed-off-by:
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- 06 Apr, 2019 17 commits
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David Kozub authored
As the function is responsible for executing the individual steps supplied in the steps argument, execute_steps is a more descriptive name than the rather generic next. Signed-off-by:
David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by:
Scott Bauer <sbauer@plzdonthack.me> Reviewed-by:
Jon Derrick <jonathan.derrick@intel.com> Signed-off-by:
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David Kozub authored
Originally each of the opal functions that call next include opal_discovery0 in the array of steps. This is superfluous and can be done always inside next. Acked-by:
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David Kozub authored
The steps argument is only read by the next function, so it can be passed directly as an argument rather than via opal_dev. Normally, the steps is an array on the stack, so the pointer stops being valid then the function that set opal_dev.steps returns. If opal_dev.steps was not set to NULL before return it would become a dangling pointer. When the steps are passed as argument this becomes easier to see and more difficult to misuse. Acked-by:
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David Kozub authored
Replace integer literals by Opal tokens defined in opal_proto.h where possible. Reviewed-by:
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David Kozub authored
Instead of having multiple places defining the same argument list to get a specific column of a sed-opal table, provide a generic version and call it from those functions. Co-authored-by:
Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by:
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David Kozub authored
Define OPAL_LIFECYCLE token and use it instead of literals in get_lsp_lifecycle. Acked-by:
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Jonas Rabenstein authored
Split the header generation from the (normal) memcpy part if a bytestring is copied into the command buffer. This allows in-place generation of the bytestring content. For example, copy_from_user may be used without an intermediate buffer. Signed-off-by:
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Jonas Rabenstein authored
Add function address (and if available its symbol) to the message if a step function fails. Signed-off-by:
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David Kozub authored
response_get_token had already been in place, its functionality had been duplicated within response_get_{u64,bytestring} with the same error handling. Unify the handling by reusing response_get_token within the other functions. Co-authored-by: -
David Kozub authored
response_get_{string,u64} include error handling for argument resp being NULL but response_get_token does not handle this. Make all three of response_get_{string,u64,token} handle NULL resp in the same way. Co-authored-by: -
David Kozub authored
Every step starts with resetting the cmd buffer as well as the comid and constructs the appropriate OPAL_CALL command. Consequently, those actions may be combined into one generic function. On should take care that the opening and closing tokens for the argument list are already emitted by cmd_start and cmd_finalize respectively and thus must not be additionally added. Co-authored-by:
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David Kozub authored
Every step ends by calling cmd_finalize (via finalize_and_send) yet every step adds the token OPAL_ENDLIST on its own. Moving this into cmd_finalize decreases code duplication. Co-authored-by:
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Jonas Rabenstein authored
All add_token_* functions have a common set of conditions that have to be checked. Use a common function for those checks in order to avoid different behaviour as well as code duplication. Acked-by:
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Jonas Rabenstein authored
Also the values of OPAL_UID_LENGTH and OPAL_METHOD_LENGTH are the same, it is weird to use OPAL_UID_LENGTH for the definition of the methods. Signed-off-by:
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David Kozub authored
This should make no change in functionality. The formatting changes were triggered by checkpatch.pl. Reviewed-by:
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David Kozub authored
The implementation of IOC_OPAL_ENABLE_DISABLE_MBR handled the value opal_mbr_data.enable_disable incorrectly: enable_disable is expected to be one of OPAL_MBR_ENABLE(0) or OPAL_MBR_DISABLE(1). enable_disable was passed directly to set_mbr_done and set_mbr_enable_disable where is was interpreted as either OPAL_TRUE(1) or OPAL_FALSE(0). The end result was that calling IOC_OPAL_ENABLE_DISABLE_MBR with OPAL_MBR_ENABLE actually disabled the shadow MBR and vice versa. This patch adds correct conversion from OPAL_MBR_DISABLE/ENABLE to OPAL_FALSE/TRUE. The change affects existing programs using IOC_OPAL_ENABLE_DISABLE_MBR but this is typically used only once when setting up an Opal drive. Acked-by:
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Christoph Hellwig authored
Currently support for 64-bit sector_t and blkcnt_t is optional on 32-bit architectures. These types are required to support block device and/or file sizes larger than 2 TiB, and have generally defaulted to on for a long time. Enabling the option only increases the i386 tinyconfig size by 145 bytes, and many data structures already always use 64-bit values for their in-core and on-disk data structures anyway, so there should not be a large change in dynamic memory usage either. Dropping this option removes a somewhat weird non-default config that has cause various bugs or compiler warnings when actually used. Signed-off-by:
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- 05 Apr, 2019 17 commits
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git://git.infradead.org/nvmeJens Axboe authored
Pull NVMe changes from Christoph: "Below is the first batch of nvme updates for 5.2. This includes the performance improvements for single segment I/O on PCIe, which introduce new block helpers, so it might be a good idea to get them in early. - various performance optimizations in the PCIe code (Keith and me) - new block helpers to support the above (me) - nvmet error conversion cleanup (me) - nvmet-fc variable sized array cleanup (Gustavo) - passthrough ioctl error printk cleanup (Kenneth) - small nvmet fixes (Max) - endianess conversion cleanup (Max) - nvmet-tcp faspath completion optimization (Sagi)" * 'nvme-5.2' of git://git.infradead.org/nvme: (24 commits) nvme: log the error status on Identify Namespace failure nvmet: add safety check for subsystem lock during nvmet_ns_changed nvmet: never fail double namespace enablement nvme-pci: tidy up nvme_map_data nvme-pci: optimize mapping single segment requests using SGLs nvme-pci: optimize mapping of small single segment requests nvme-pci: remove the inline scatterlist optimization nvme-pci: split metadata handling from nvme_map_data / nvme_unmap_data nvme-pci: do not build a scatterlist to map metadata nvme-pci: only call nvme_unmap_data for requests transferring data nvme-pci: merge nvme_free_iod into nvme_unmap_data nvme-pci: move the call to nvme_cleanup_cmd out of nvme_unmap_data nvme-pci: remove nvme_init_iod block: add dma_map_bvec helper block: add a rq_dma_dir helper block: add a rq_integrity_vec helper block: add a req_bvec helper nvme-pci: remove unused nvme_iod member nvme-pci: remove q_dmadev from nvme_queue nvme-pci: use a flag for polled queues ...
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Kenneth Heitke authored
Identify Namespace failures are logged as a warning but there is not an indication of the cause for the failure. Update the log message to include the error status. Signed-off-by:
Kenneth Heitke <kenneth.heitke@intel.com> Reviewed-by:
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Max Gurtovoy authored
we need to make sure that subsystem lock is taken during ctrl's list traversing. nvmet_ns_changed function is not static and can be used from various callers simultaneously. Signed-off-by:
Max Gurtovoy <maxg@mellanox.com> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Max Gurtovoy authored
In case we create N namespaces while N < NVMET_MAX_NAMESPACES, we can perform "echo 1 > <nsid>/enable" as much as we want. In case N == NVMET_MAX_NAMESPACES we fail. Make sure we have the same flow for any N. Signed-off-by:
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Christoph Hellwig authored
Remove two pointless local variables, remove ret assignment that is never used, move the use_sgl initialization closer to where it is used. Signed-off-by:
Keith Busch <keith.busch@intel.com> Reviewed-by:
Sagi Grimberg <sagi@grimberg.me> Reviewed-by:
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Christoph Hellwig authored
If the controller supports SGLs we can take another short cut for single segment request, given that we can always map those without another indirection structure, and thus don't need to create a scatterlist structure. Signed-off-by:
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Christoph Hellwig authored
If a request is single segment and fits into one or two PRP entries we do not have to create a scatterlist for it, but can just map the bio_vec directly. Signed-off-by:
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Christoph Hellwig authored
We'll have a better way to optimize for small I/O that doesn't require it soon, so remove the existing inline_sg case to make that optimization easier to implement. Signed-off-by:
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Christoph Hellwig authored
This prepares for some bigger changes to the data mapping helpers. Signed-off-by:
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Christoph Hellwig authored
We always have exactly one segment, so we can simply call dma_map_bvec. Signed-off-by:
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Christoph Hellwig authored
This mirrors how nvme_map_pci is called and will allow simplifying some checks in nvme_unmap_pci later on. Signed-off-by:
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Christoph Hellwig authored
This means we now have a function that undoes everything nvme_map_data does and we can simplify the error handling a bit. Signed-off-by:
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Christoph Hellwig authored
Cleaning up the command setup isn't related to unmapping data, and disentangling them will simplify error handling a bit down the road. Signed-off-by:
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Christoph Hellwig authored
nvme_init_iod should really be split into two parts: initialize a few general iod fields, which can easily be done at the beginning of nvme_queue_rq, and allocating the scatterlist if needed, which logically belongs into nvme_map_data with the code making use of it. Signed-off-by:
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Christoph Hellwig authored
Provide a nice little shortcut for mapping a single bvec. Signed-off-by:
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Christoph Hellwig authored
In a lot of places we want to know the DMA direction for a given struct request. Add a little helper to make it a littler easier. Signed-off-by:
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Christoph Hellwig authored
This provides a nice little shortcut to get the integrity data for drivers like NVMe that only support a single integrity segment. Signed-off-by:
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