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2022-05-28blk-mq: remove the done argument to blk_execute_rq_nowaitChristoph Hellwig1-2/+1
Let the caller set it together with the end_io_data instead of passing a pointless argument. Note the the target code did in fact already set it and then just overrode it again by calling blk_execute_rq_nowait. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Kanchan Joshi <joshi.k@samsung.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220524121530.943123-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-05-26Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds39-743/+786
Pull SCSI updates from James Bottomley: "This consists of a small set of driver updates (lpfc, ufs, mpt3sas mpi3mr, iscsi target). Apart from that this is mostly small fixes with very few core changes (the biggest one being VPD caching)" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (177 commits) scsi: target: tcmu: Avoid holding XArray lock when calling lock_page scsi: elx: efct: Remove NULL check after calling container_of() scsi: dpt_i2o: Drop redundant spinlock initialization scsi: qedf: Remove redundant variable op scsi: hisi_sas: Fix memory ordering in hisi_sas_task_deliver() scsi: fnic: Replace DMA mask of 64 bits with 47 bits scsi: mpi3mr: Add target device related sysfs attributes scsi: mpi3mr: Add shost related sysfs attributes scsi: elx: efct: Remove redundant memset() statement scsi: megaraid_sas: Remove redundant memset() statement scsi: mpi3mr: Return error if dma_alloc_coherent() fails scsi: hisi_sas: Fix rescan after deleting a disk scsi: hisi_sas: Use sas_ata_wait_after_reset() in IT nexus reset scsi: libsas: Refactor sas_ata_hard_reset() scsi: mpt3sas: Update driver version to 42.100.00.00 scsi: mpt3sas: Fix junk chars displayed while printing ChipName scsi: ipr: Use kobj_to_dev() scsi: mpi3mr: Fix a NULL vs IS_ERR() bug in mpi3mr_bsg_init() scsi: bnx2fc: Avoid using get_cpu() in bnx2fc_cmd_alloc() scsi: libfc: Remove get_cpu() semantics in fc_exch_em_alloc() ...
2022-05-23Merge tag 'for-5.19/block-2022-05-22' of git://git.kernel.dk/linux-blockLinus Torvalds4-57/+26
Pull block updates from Jens Axboe: "Here are the core block changes for 5.19. This contains: - blk-throttle accounting fix (Laibin) - Series removing redundant assignments (Michal) - Expose bio cache via the bio_set, so that DM can use it (Mike) - Finish off the bio allocation interface cleanups by dealing with the weirdest member of the family. bio_kmalloc combines a kmalloc for the bio and bio_vecs with a hidden bio_init call and magic cleanup semantics (Christoph) - Clean up the block layer API so that APIs consumed by file systems are (almost) only struct block_device based, so that file systems don't have to poke into block layer internals like the request_queue (Christoph) - Clean up the blk_execute_rq* API (Christoph) - Clean up various lose end in the blk-cgroup code to make it easier to follow in preparation of reworking the blkcg assignment for bios (Christoph) - Fix use-after-free issues in BFQ when processes with merged queues get moved to different cgroups (Jan) - BFQ fixes (Jan) - Various fixes and cleanups (Bart, Chengming, Fanjun, Julia, Ming, Wolfgang, me)" * tag 'for-5.19/block-2022-05-22' of git://git.kernel.dk/linux-block: (83 commits) blk-mq: fix typo in comment bfq: Remove bfq_requeue_request_body() bfq: Remove superfluous conversion from RQ_BIC() bfq: Allow current waker to defend against a tentative one bfq: Relax waker detection for shared queues blk-cgroup: delete rcu_read_lock_held() WARN_ON_ONCE() blk-throttle: Set BIO_THROTTLED when bio has been throttled blk-cgroup: Remove unnecessary rcu_read_lock/unlock() blk-cgroup: always terminate io.stat lines block, bfq: make bfq_has_work() more accurate block, bfq: protect 'bfqd->queued' by 'bfqd->lock' block: cleanup the VM accounting in submit_bio block: Fix the bio.bi_opf comment block: reorder the REQ_ flags blk-iocost: combine local_stat and desc_stat to stat block: improve the error message from bio_check_eod block: allow passing a NULL bdev to bio_alloc_clone/bio_init_clone block: remove superfluous calls to blkcg_bio_issue_init kthread: unexport kthread_blkcg blk-cgroup: cleanup blkcg_maybe_throttle_current ...
2022-05-20scsi: target: tcmu: Avoid holding XArray lock when calling lock_pageBodo Stroesser1-5/+5
In tcmu_blocks_release(), lock_page() is called to prevent a race causing possible data corruption. Since lock_page() might sleep, calling it while holding XArray lock is a bug. To fix this, replace the xas_for_each() call with xa_for_each_range(). Since the latter does its own handling of XArray locking, the xas_lock() and xas_unlock() calls around the original loop are no longer necessary. The switch to xa_for_each_range() slows down the loop slightly. This is acceptable since tcmu_blocks_release() is not relevant for performance. Link: https://lore.kernel.org/r/20220517192913.21405-1-bostroesser@gmail.com Fixes: bb9b9eb0ae2e ("scsi: target: tcmu: Fix possible data corruption") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Bodo Stroesser <bostroesser@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-05-18scsi: target: Fix incorrect use of cpumask_tMingzhe Zou2-20/+36
In commit d72d827f2f26, I used 'cpumask_t' incorrectly: void iscsit_thread_get_cpumask(struct iscsi_conn *conn) { int ord, cpu; cpumask_t conn_allowed_cpumask; ...... } static ssize_t lio_target_wwn_cpus_allowed_list_store( struct config_item *item, const char *page, size_t count) { int ret; char *orig; cpumask_t new_allowed_cpumask; ...... } The correct pattern should be as follows: cpumask_var_t mask; if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) return -ENOMEM; ... use 'mask' here ... free_cpumask_var(mask); Link: https://lore.kernel.org/r/20220516054721.1548-1-mingzhe.zou@easystack.cn Fixes: d72d827f2f26 ("scsi: target: Add iscsi/cpus_allowed_list in configfs") Reported-by: Test Bot <zgrieee@gmail.com> Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Mingzhe Zou <mingzhe.zou@easystack.cn> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-05-11scsi: target: iscsi: Rename iscsi_session to iscsit_sessionMax Gurtovoy21-119/+119
The structure iscsi_session naming is used by the iSCSI initiator driver. Rename the target session to iscsit_session to have more readable code. Link: https://lore.kernel.org/r/20220428092939.36768-3-mgurtovoy@nvidia.com Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-05-11scsi: target: iscsi: Rename iscsi_conn to iscsit_connMax Gurtovoy29-368/+368
The structure iscsi_conn naming is used by the iSCSI initiator driver. Rename the target conn to iscsit_conn to have more readable code. Link: https://lore.kernel.org/r/20220428092939.36768-2-mgurtovoy@nvidia.com Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-05-11scsi: target: iscsi: Rename iscsi_cmd to iscsit_cmdMax Gurtovoy23-297/+297
The structure iscsi_cmd naming is used by the iSCSI initiator driver. Rename the target cmd to iscsit_cmd to have more readable code. Link: https://lore.kernel.org/r/20220428092939.36768-1-mgurtovoy@nvidia.com Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-05-02scsi: target: tcmu: Fix possible data corruptionXiaoguang Wang1-3/+37
When tcmu_vma_fault() gets a page successfully, before the current context completes page fault procedure, find_free_blocks() may run and call unmap_mapping_range() to unmap the page. Assume that when find_free_blocks() initially completes and the previous page fault procedure starts to run again and completes, then one truncated page has been mapped to userspace. But note that tcmu_vma_fault() has gotten a refcount for the page so any other subsystem won't be able to use the page unless the userspace address is unmapped later. If another command subsequently runs and needs to extend dbi_thresh it may reuse the corresponding slot for the previous page in data_bitmap. Then though we'll allocate new page for this slot in data_area, no page fault will happen because we have a valid map and the real request's data will be lost. Filesystem implementations will also run into this issue but they usually lock the page when vm_operations_struct->fault gets a page and unlock the page after finish_fault() completes. For truncate filesystems lock pages in truncate_inode_pages() to protect against racing wrt. page faults. To fix this possible data corruption scenario we can apply a method similar to the filesystems. For pages that are to be freed, tcmu_blocks_release() locks and unlocks. Make tcmu_vma_fault() also lock found page under cmdr_lock. At the same time, since tcmu_vma_fault() gets an extra page refcount, tcmu_blocks_release() won't free pages if pages are in page fault procedure, which means it is safe to call tcmu_blocks_release() before unmap_mapping_range(). With these changes tcmu_blocks_release() will wait for all page faults to be completed before calling unmap_mapping_range(). And later, if unmap_mapping_range() is called, it will ensure stale mappings are removed. Link: https://lore.kernel.org/r/20220421023735.9018-1-xiaoguang.wang@linux.alibaba.com Reviewed-by: Bodo Stroesser <bostroesser@gmail.com> Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-04-28scsi: target: pscsi: Set SCF_TREAT_READ_AS_NORMAL flag only if there is ↵David Jeffery1-5/+5
valid data With tape devices, the SCF_TREAT_READ_AS_NORMAL flag is used by the target subsystem to mark commands which have both data to return as well as sense data. But with pscsi, SCF_TREAT_READ_AS_NORMAL can be set even if there is no data to return. The SCF_TREAT_READ_AS_NORMAL flag causes the target core to call iscsit data-in callbacks even if there is no data, which iscsit does not support. This results in iscsit going into an error state requiring recovery and being unable to complete the command to the initiator. This issue can be resolved by fixing pscsi to only set SCF_TREAT_READ_AS_NORMAL if there is valid data to return alongside the sense data. Link: https://lore.kernel.org/r/20220427183250.291881-1-djeffery@redhat.com Fixes: bd81372065fa ("scsi: target: transport should handle st FM/EOM/ILI reads") Reported-by: Scott Hamilton <scott.hamilton@atos.net> Tested-by: Laurence Oberman <loberman@redhat.com> Reviewed-by: Laurence Oberman <loberman@redhat.com> Signed-off-by: David Jeffery <djeffery@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-04-26scsi: target: core: Silence the message about unknown VPD pagesKonstantin Shelekhin1-1/+1
Target does not support some VPD pages and is very verbose about it. Sometimes initiators don't bother and just keep sending the same request from time to time, filling up the logs. This patch lowers the message priority to debug. Link: https://lore.kernel.org/r/20220418212622.275516-1-k.shelekhin@yadro.com Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-04-19Merge branch '5.18/scsi-fixes' into 5.19/scsi-stagingMartin K. Petersen1-1/+2
Pull in 5.18 fixes branch which contains a bunch of fixes required for the lpfc driver update. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-04-18block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARDChristoph Hellwig2-2/+2
Secure erase is a very different operation from discard in that it is a data integrity operation vs hint. Fully split the limits and helper infrastructure to make the separation more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [drbd] Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> [nifs2] Acked-by: Jaegeuk Kim <jaegeuk@kernel.org> [f2fs] Acked-by: Coly Li <colyli@suse.de> [bcache] Acked-by: David Sterba <dsterba@suse.com> [btrfs] Acked-by: Chao Yu <chao@kernel.org> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-27-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18block: add a bdev_discard_granularity helperChristoph Hellwig1-2/+1
Abstract away implementation details from file systems by providing a block_device based helper to retrieve the discard granularity. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [drbd] Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Acked-by: David Sterba <dsterba@suse.com> [btrfs] Link: https://lore.kernel.org/r/20220415045258.199825-26-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18block: remove QUEUE_FLAG_DISCARDChristoph Hellwig1-1/+1
Just use a non-zero max_discard_sectors as an indicator for discard support, similar to what is done for write zeroes. The only places where needs special attention is the RAID5 driver, which must clear discard support for security reasons by default, even if the default stacking rules would allow for it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [drbd] Acked-by: Jan Höppner <hoeppner@linux.ibm.com> [s390] Acked-by: Coly Li <colyli@suse.de> [bcache] Acked-by: David Sterba <dsterba@suse.com> [btrfs] Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-25-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18block: add a bdev_max_discard_sectors helperChristoph Hellwig1-4/+3
Add a helper to query the number of sectors support per each discard bio based on the block device and use this helper to stop various places from poking into the request_queue to see if discard is supported and if so how much. This mirrors what is done e.g. for write zeroes as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [drbd] Acked-by: Coly Li <colyli@suse.de> [bcache] Acked-by: David Sterba <dsterba@suse.com> [btrfs] Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-24-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18block: add a bdev_fua helperChristoph Hellwig1-2/+1
Add a helper to check the FUA flag based on the block_device instead of having to poke into the block layer internal request_queue. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-14-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18block: add a bdev_write_cache helperChristoph Hellwig1-6/+2
Add a helper to check the write cache flag based on the block_device instead of having to poke into the block layer internal request_queue. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: David Sterba <dsterba@suse.com> [btrfs] Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-13-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18block: add a bdev_nonrot helperChristoph Hellwig2-3/+2
Add a helper to check the nonrot flag based on the block_device instead of having to poke into the block layer internal request_queue. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: David Sterba <dsterba@suse.com> [btrfs] Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-12-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18target: fix discard alignment on partitionsChristoph Hellwig1-2/+2
Use the proper bdev_discard_alignment helper that accounts for partition offsets. Fixes: c66ac9db8d4a ("[SCSI] target: Add LIO target core v4.0.0-rc6") Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18target: pass a block_device to target_configure_unmap_from_queueChristoph Hellwig3-6/+8
The SCSI target drivers is a consumer of the block layer and shoul d generally work on struct block_device. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18target: remove an incorrect unmap zeroes data deductionChristoph Hellwig1-1/+0
For block devices, the SCSI target drivers implements UNMAP as calls to blkdev_issue_discard, which does not guarantee zeroing just because Write Zeroes is supported. Note that this does not affect the file backed path which uses fallocate to punch holes. Fixes: 2237498f0b5c ("target/iblock: Convert WRITE_SAME to blkdev_issue_zeroout") Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18block: turn bio_kmalloc into a simple kmalloc wrapperChristoph Hellwig1-5/+5
Remove the magic autofree semantics and require the callers to explicitly call bio_init to initialize the bio. This allows bio_free to catch accidental bio_put calls on bio_init()ed bios as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Coly Li <colyli@suse.de> Acked-by: Mike Snitzer <snitzer@kernel.org> Link: https://lore.kernel.org/r/20220406061228.410163-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-18target/pscsi: remove pscsi_get_bioChristoph Hellwig1-26/+2
Remove pscsi_get_bio and simplify the code flow in the only caller. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220406061228.410163-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-07scsi: target: Allow changing dbroot if there are no registered devicesMaurizio Lombardi1-19/+28
The target driver prevents the users from changing the database root directory if a target module like ib_srpt has been registered. This makes it difficult for users to set their preferred database directory if the module gets loaded during the system boot. Let the users modify dbroot if there are no registered devices Link: https://lore.kernel.org/r/20220328103940.19977-1-mlombard@redhat.com Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Maurizio Lombardi <mlombard@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-04-07Merge branch '5.18/scsi-queue' into 5.18/scsi-fixesMartin K. Petersen1-1/+2
Pull the remaining commits from 5.18/scsi-queue into fixes. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-03-30scsi: target: tcmu: Fix possible page UAFXiaoguang Wang1-1/+2
tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release(). We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release(). Link: https://lore.kernel.org/r/20220311132206.24515-1-xiaoguang.wang@linux.alibaba.com Reviewed-by: Bodo Stroesser <bostroesser@gmail.com> Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-03-25Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds6-57/+204
Pull SCSI updates from James Bottomley: "This series consists of the usual driver updates (qla2xxx, pm8001, libsas, smartpqi, scsi_debug, lpfc, iscsi, mpi3mr) plus minor updates and bug fixes. The high blast radius core update is the removal of write same, which affects block and several non-SCSI devices. The other big change, which is more local, is the removal of the SCSI pointer" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (281 commits) scsi: scsi_ioctl: Drop needless assignment in sg_io() scsi: bsg: Drop needless assignment in scsi_bsg_sg_io_fn() scsi: lpfc: Copyright updates for 14.2.0.0 patches scsi: lpfc: Update lpfc version to 14.2.0.0 scsi: lpfc: SLI path split: Refactor BSG paths scsi: lpfc: SLI path split: Refactor Abort paths scsi: lpfc: SLI path split: Refactor SCSI paths scsi: lpfc: SLI path split: Refactor CT paths scsi: lpfc: SLI path split: Refactor misc ELS paths scsi: lpfc: SLI path split: Refactor VMID paths scsi: lpfc: SLI path split: Refactor FDISC paths scsi: lpfc: SLI path split: Refactor LS_RJT paths scsi: lpfc: SLI path split: Refactor LS_ACC paths scsi: lpfc: SLI path split: Refactor the RSCN/SCR/RDF/EDC/FARPR paths scsi: lpfc: SLI path split: Refactor PLOGI/PRLI/ADISC/LOGO paths scsi: lpfc: SLI path split: Refactor base ELS paths and the FLOGI path scsi: lpfc: SLI path split: Introduce lpfc_prep_wqe scsi: lpfc: SLI path split: Refactor fast and slow paths to native SLI4 scsi: lpfc: SLI path split: Refactor lpfc_iocbq scsi: lpfc: Use kcalloc() ...
2022-03-15scsi: target: Add iscsi/cpus_allowed_list in configfsMingzhe Zou3-3/+114
The RX/TX threads for iSCSI connection can be scheduled to any online CPUs, and will not be rescheduled. When binding other heavy load threads along with iSCSI connection RX/TX thread to the same CPU, the iSCSI performance will be worse. Add iscsi/cpus_allowed_list in configfs. The available CPU set of iSCSI connection RX/TX threads is allowed_cpus & online_cpus. If it is modified, all RX/TX threads will be rescheduled. Link: https://lore.kernel.org/r/20220301075500.14266-1-mingzhe.zou@easystack.cn Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Mingzhe Zou <mingzhe.zou@easystack.cn> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-03-02scsi: core: Remove struct scsi_requestChristoph Hellwig1-1/+1
Let submitters initialize the scmd->allowed field directly instead of indirecting through struct scsi_request and remove the now superfluous structure. Link: https://lore.kernel.org/r/20220224175552.988286-8-hch@lst.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-03-02scsi: core: Move the result field from struct scsi_request to struct scsi_cmndChristoph Hellwig1-5/+4
Prepare for removing the scsi_request structure by moving the result field to struct scsi_cmnd. Link: https://lore.kernel.org/r/20220224175552.988286-7-hch@lst.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-03-02scsi: core: Move the resid_len field from struct scsi_request to struct ↵Christoph Hellwig1-1/+1
scsi_cmnd Prepare for removing the scsi_request structure by moving the resid_len field to struct scsi_cmnd. Link: https://lore.kernel.org/r/20220224175552.988286-6-hch@lst.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-03-02scsi: core: Remove the sense and sense_len fields from struct scsi_requestChristoph Hellwig1-1/+2
Just use the sense_buffer field in struct scsi_cmnd for the sense data and move the sense_len field over to struct scsi_cmnd. Link: https://lore.kernel.org/r/20220224175552.988286-5-hch@lst.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-03-02scsi: core: Remove the cmd field from struct scsi_requestChristoph Hellwig1-4/+8
Now that each scsi_request is backed by a scsi_cmnd, there is no need to indirect the CDB storage. Change all submitters of SCSI passthrough requests to store the CDB information directly in the scsi_cmnd, and while doing so allocate the full 32 bytes that cover all Linux supported SCSI hosts instead of requiring dynamic allocation for > 16 byte CDBs. On 64-bit systems this does not change the size of the scsi_cmnd at all, while on 32-bit systems it slightly increases it for now, but that increase will be made up by the removal of the remaining scsi_request fields. Link: https://lore.kernel.org/r/20220224175552.988286-4-hch@lst.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-03-02scsi: target: pscsi: Remove struct pscsi_plugin_taskChristoph Hellwig2-38/+17
Copy directly from the se_cmd CDB to the one in the scsi_request. This temporarily limits the pscsi backend to supporting only up to 16 byte CDBs, but this restriction will be lifted later in this series. Link: https://lore.kernel.org/r/20220224175552.988286-2-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-23scsi: target: tcmu: Make cmd_ring_size changeable via configfsGuixin Liu1-10/+63
Make cmd_ring_size changeable similar to the way it is done for max_data_area_mb. The reason is that our tcmu client will create thousands of tcmu instances, and this will consume lots of mem with default 8Mb cmd ring size for every backstore. One can change the value by typing: echo "cmd_ring_size_mb=N" > control The "N" is a integer between 1 to 8, if set 1, the cmd ring can hold about 6k cmds(tcmu_cmd_entry about 176 byte) at least. The value is printed when doing: cat info In addition, a new readonly attribute 'cmd_ring_size_mb' returns the value in read. Link: https://lore.kernel.org/r/1644978109-14885-1-git-send-email-kanie@linux.alibaba.com Reviewed-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com> Reviewed-by: Bodo Stroesser <bostroesser@gmail.com> Signed-off-by: Guixin Liu <kanie@linux.alibaba.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2022-02-02block: pass a block_device and opf to bio_allocChristoph Hellwig1-3/+2
Pass the block_device and operation that we plan to use this bio for to bio_alloc to optimize the assignment. NULL/0 can be passed, both for the passthrough case on a raw request_queue and to temporarily avoid refactoring some nasty code. Also move the gfp_mask argument after the nr_vecs argument for a much more logical calling convention matching what most of the kernel does. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220124091107.642561-18-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-02-02block: pass a block_device and opf to bio_alloc_biosetChristoph Hellwig1-4/+2
Pass the block_device and operation that we plan to use this bio for to bio_alloc_bioset to optimize the assigment. NULL/0 can be passed, both for the passthrough case on a raw request_queue and to temporarily avoid refactoring some nasty code. Also move the gfp_mask argument after the nr_vecs argument for a much more logical calling convention matching what most of the kernel does. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220124091107.642561-16-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-02-02block: remove genhd.hChristoph Hellwig2-2/+0
There is no good reason to keep genhd.h separate from the main blkdev.h header that includes it. So fold the contents of genhd.h into blkdev.h and remove genhd.h entirely. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20220124093913.742411-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-01-25scsi: target: iscsi: Make sure the np under each tpg is uniqueZouMingzhe1-0/+3
iscsit_tpg_check_network_portal() has nested for_each loops and is supposed to return true when a match is found. However, the tpg loop will still continue after existing the tpg_np loop. If this tpg_np is not the last the match value will be changed. Break the outer loop after finding a match and make sure the np under each tpg is unique. Link: https://lore.kernel.org/r/20220111054742.19582-1-mingzhe.zou@easystack.cn Signed-off-by: ZouMingzhe <mingzhe.zou@easystack.cn> Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-29block: remove the gendisk argument to blk_execute_rqChristoph Hellwig1-1/+1
Remove the gendisk aregument to blk_execute_rq and blk_execute_rq_nowait given that it is unused now. Also convert the boolean at_head parameter to actually use the bool type while touching the prototype. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20211126121802.2090656-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-11-19scsi: target: configfs: Delete unnecessary checks for NULLDan Carpenter1-8/+8
The "item" pointer is always going to be valid pointer and does not need to be checked. But if "item" were NULL then item_to_lun() would not return a NULL, but instead, the container_of() pointer math would return a value in the error pointer range. This confuses static checkers since it looks like a NULL vs IS_ERR() bug. Delete the bogus checks. Link: https://lore.kernel.org/r/20211118084900.GA24550@kili Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-19scsi: target: core: Use RCU helpers for INQUIRY t10_alua_tg_pt_gpMike Christie1-7/+7
Fix the sparse warnings about t10_alua_tg_pt_gp accesses in target_core_spc.c caused by commit 7324f47d4293 ("scsi: target: Replace lun_tg_pt_gp_lock with rcu in I/O path") That commit replaced the lun_tg_pt_gp_lock use in the I/O path, but it didn't update the INQUIRY code. Link: https://lore.kernel.org/r/20211117213928.8634-1-michael.christie@oracle.com Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Maurizio Lombardi <mlombard@redhat.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-11-12Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2-23/+24
Pull more SCSI updates from James Bottomley: "This series is all the stragglers that didn't quite make the first merge window pull. It's mostly minor updates and bug fixes of merge window code but it also has two driver updates: ufs and qla2xxx" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (46 commits) scsi: scsi_debug: Don't call kcalloc() if size arg is zero scsi: core: Remove command size deduction from scsi_setup_scsi_cmnd() scsi: scsi_ioctl: Validate command size scsi: ufs: ufshpb: Properly handle max-single-cmd scsi: core: Avoid leaving shost->last_reset with stale value if EH does not run scsi: bsg: Fix errno when scsi_bsg_register_queue() fails scsi: sr: Remove duplicate assignment scsi: ufs: ufs-exynos: Introduce ExynosAuto v9 virtual host scsi: ufs: ufs-exynos: Multi-host configuration for ExynosAuto v9 scsi: ufs: ufs-exynos: Support ExynosAuto v9 UFS scsi: ufs: ufs-exynos: Add pre/post_hce_enable drv callbacks scsi: ufs: ufs-exynos: Factor out priv data init scsi: ufs: ufs-exynos: Add EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR option scsi: ufs: ufs-exynos: Support custom version of ufs_hba_variant_ops scsi: ufs: ufs-exynos: Add setup_clocks callback scsi: ufs: ufs-exynos: Add refclkout_stop control scsi: ufs: ufs-exynos: Simplify drv_data retrieval scsi: ufs: ufs-exynos: Change pclk available max value scsi: ufs: Add quirk to enable host controller without PH configuration scsi: ufs: Add quirk to handle broken UIC command ...
2021-11-05Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds15-183/+279
Pull SCSI updates from James Bottomley: "This consists of the usual driver updates (ufs, smartpqi, lpfc, target, megaraid_sas, hisi_sas, qla2xxx) and minor updates and bug fixes. Notable core changes are the removal of scsi->tag which caused some churn in obsolete drivers and a sweep through all drivers to call scsi_done() directly instead of scsi->done() which removes a pointer indirection from the hot path and a move to register core sysfs files earlier, which means they're available to KOBJ_ADD processing, which necessitates switching all drivers to using attribute groups" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (279 commits) scsi: lpfc: Update lpfc version to 14.0.0.3 scsi: lpfc: Allow fabric node recovery if recovery is in progress before devloss scsi: lpfc: Fix link down processing to address NULL pointer dereference scsi: lpfc: Allow PLOGI retry if previous PLOGI was aborted scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine scsi: lpfc: Correct sysfs reporting of loop support after SFP status change scsi: lpfc: Wait for successful restart of SLI3 adapter during host sg_reset scsi: lpfc: Revert LOG_TRACE_EVENT back to LOG_INIT prior to driver_resource_setup() scsi: ufs: ufshcd-pltfrm: Fix memory leak due to probe defer scsi: ufs: mediatek: Avoid sched_clock() misuse scsi: mpt3sas: Make mpt3sas_dev_attrs static scsi: scsi_transport_sas: Add 22.5 Gbps link rate definitions scsi: target: core: Stop using bdevname() scsi: aha1542: Use memcpy_{from,to}_bvec() scsi: sr: Add error handling support for add_disk() scsi: sd: Add error handling support for add_disk() scsi: target: Perform ALUA group changes in one step scsi: target: Replace lun_tg_pt_gp_lock with rcu in I/O path scsi: target: Fix alua_tg_pt_gps_count tracking scsi: target: Fix ordered tag handling ...
2021-11-01Merge tag 'for-5.16/ki_complete-2021-10-29' of git://git.kernel.dk/linux-blockLinus Torvalds1-2/+2
Pull kiocb->ki_complete() cleanup from Jens Axboe: "This removes the res2 argument from kiocb->ki_complete(). Only the USB gadget code used it, everybody else passes 0. The USB guys checked the user gadget code they could find, and everybody just uses res as expected for the async interface" * tag 'for-5.16/ki_complete-2021-10-29' of git://git.kernel.dk/linux-block: fs: get rid of the res2 iocb->ki_complete argument usb: remove res2 argument from gadget code completions
2021-11-01Merge tag 'for-5.16/passthrough-flag-2021-10-29' of ↵Linus Torvalds1-4/+3
git://git.kernel.dk/linux-block Pull QUEUE_FLAG_SCSI_PASSTHROUGH removal from Jens Axboe: "This contains a series leading to the removal of the QUEUE_FLAG_SCSI_PASSTHROUGH queue flag" * tag 'for-5.16/passthrough-flag-2021-10-29' of git://git.kernel.dk/linux-block: block: remove blk_{get,put}_request block: remove QUEUE_FLAG_SCSI_PASSTHROUGH block: remove the initialize_rq_fn blk_mq_ops method scsi: add a scsi_alloc_request helper bsg-lib: initialize the bsg_job in bsg_transport_sg_io_fn nfsd/blocklayout: use ->get_unique_id instead of sending SCSI commands sd: implement ->get_unique_id block: add a ->get_unique_id method
2021-10-29block: remove blk_{get,put}_requestChristoph Hellwig1-2/+2
These are now pointless wrappers around blk_mq_{alloc,free}_request, so remove them. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20211025070517.1548584-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-10-27scsi: target: core: Remove from tmr_list during LUN unlinkDmitry Bogdanov2-23/+24
Currently TMF commands are removed from de_device.dev_tmf_list at the very end of se_cmd lifecycle. However, se_lun unlinks from se_cmd upon a command status (response) being queued in transport layer. This means that LUN and backend device can be deleted in the meantime and a panic will occur: target_tmr_work() cmd->se_tfo->queue_tm_rsp(cmd); // send abort_rsp to a wire transport_lun_remove_cmd(cmd) // unlink se_cmd from se_lun - // - // - // - <<<--- lun remove <<<--- core backend device remove - // - // - // - qlt_handle_abts_completion() tfo->free_mcmd() transport_generic_free_cmd() target_put_sess_cmd() core_tmr_release_req() { if (dev) { // backend device, can not be null spin_lock_irqsave(&dev->se_tmr_lock, flags); //<<<--- CRASH Call Trace: NIP [c000000000e1683c] _raw_spin_lock_irqsave+0x2c/0xc0 LR [c00800000e433338] core_tmr_release_req+0x40/0xa0 [target_core_mod] Call Trace: (unreliable) 0x0 target_put_sess_cmd+0x2a0/0x370 [target_core_mod] transport_generic_free_cmd+0x6c/0x1b0 [target_core_mod] tcm_qla2xxx_complete_mcmd+0x28/0x50 [tcm_qla2xxx] process_one_work+0x2c4/0x5c0 worker_thread+0x88/0x690 For the iSCSI protocol this is easily reproduced: - Send some SCSI sommand - Send Abort of that command over iSCSI - Remove LUN on target - Send next iSCSI command to acknowledge the Abort_Response - Target panics There is no need to keep the command in tmr_list until response completion, so move the removal from tmr_list from the response completion to the response queueing when the LUN is unlinked. Move the removal from state list too as it is a subject to the same race condition. Link: https://lore.kernel.org/r/20211018135753.15297-1-d.bogdanov@yadro.com Fixes: c66ac9db8d4a ("[SCSI] target: Add LIO target core v4.0.0-rc6") Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-25fs: get rid of the res2 iocb->ki_complete argumentJens Axboe1-2/+2
The second argument was only used by the USB gadget code, yet everyone pays the overhead of passing a zero to be passed into aio, where it ends up being part of the aio res2 value. Now that everybody is passing in zero, kill off the extra argument. Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>