kernel/linux.git/block/blk.h, branch v6.4.4

blk-integrity: register sysfs attributes on struct device

2023-04-27T00:22:50+00:00

The "integrity" kobject only acted as a holder for static sysfs entries. It also was embedded into struct gendisk without managing it, violating assumptions of the driver core. Instead register the sysfs entries directly onto the struct device. Also drop the now unused member integrity_kobj from struct gendisk. Suggested-by: Christoph Hellwig Signed-off-by: Thomas Weißschuh Reviewed-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Link: https://lore.kernel.org/r/20230309-kobj_release-gendisk_integrity-v3-3-ceccb4493c46@weissschuh.net Signed-off-by: Jens Axboe

block: Cleanup set_capacity()/bdev_set_nr_sectors()

2023-04-24T14:48:09+00:00

The code for setting a block device capacity (bd_nr_sectors field of struct block_device) is duplicated in set_capacity() and bdev_set_nr_sectors(). Clean this up by making bdev_set_nr_sectors() a block layer internal function defined in block/bdev.c instead of having this function statically defined in block/partitions/core.c. With this change, set_capacity() implementation can be simplified to only calling bdev_set_nr_sectors(). Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20230424131318.79935-1-dlemoal@kernel.org Signed-off-by: Jens Axboe

blk-iolatency: Make initialization lazy

2023-04-13T12:46:49+00:00

Other rq_qos policies such as wbt and iocost are lazy-initialized when they are configured for the first time for the device but iolatency is initialized unconditionally from blkcg_init_disk() during gendisk init. Lazy init is beneficial because rq_qos policies add runtime overhead when initialized as every IO has to walk all registered rq_qos callbacks. This patch switches iolatency to lazy initialization too so that it only registered its rq_qos policy when it is first configured. Note that there is a known race condition between blkcg config file writes and del_gendisk() and this patch makes iolatency susceptible to it by exposing the init path to race against the deletion path. However, that problem already exists in iocost and is being worked on. Signed-off-by: Tejun Heo Reviewed-by: Christoph Hellwig Cc: Josef Bacik Link: https://lore.kernel.org/r/20230413000649.115785-5-tj@kernel.org Signed-off-by: Jens Axboe

blk-mq: enforce op-specific segment limits in blk_insert_cloned_request

2023-03-03T04:00:20+00:00

The block layer might merge together discard requests up until the max_discard_segments limit is hit, but blk_insert_cloned_request checks the segment count against max_segments regardless of the req op. This can result in errors like the following when discards are issued through a DM device and max_discard_segments exceeds max_segments for the queue of the chosen underlying device. blk_insert_cloned_request: over max segments limit. (256 > 129) Fix this by looking at the req_op and enforcing the appropriate segment limit - max_discard_segments for REQ_OP_DISCARDs and max_segments for everything else. Signed-off-by: Uday Shankar Reviewed-by: Keith Busch Reviewed-by: Ming Lei Link: https://lore.kernel.org/r/20230301000655.48112-1-ushankar@purestorage.com Signed-off-by: Jens Axboe

block: Revert "block: Do not reread partition table on exclusively open device"

2023-02-17T13:15:57+00:00

This reverts commit 36369f46e91785688a5f39d7a5590e3f07981316. This patch can't fix the problem in a corner case that device can be opened exclusively after the checking and before blkdev_get_by_dev(). We'll use a new solution to fix the problem in the next patch, and the new solution doesn't need to change apis. Signed-off-by: Yu Kuai Acked-by: Jan Kara Link: https://lore.kernel.org/r/20230217022200.3092987-2-yukuai1@huaweicloud.com Signed-off-by: Jens Axboe

Merge tag 'for-6.2/block-2022-12-08' of git://git.kernel.dk/linux

2022-12-13T18:43:59+00:00

Pull block updates from Jens Axboe: - NVMe pull requests via Christoph: - Support some passthrough commands without CAP_SYS_ADMIN (Kanchan Joshi) - Refactor PCIe probing and reset (Christoph Hellwig) - Various fabrics authentication fixes and improvements (Sagi Grimberg) - Avoid fallback to sequential scan due to transient issues (Uday Shankar) - Implement support for the DEAC bit in Write Zeroes (Christoph Hellwig) - Allow overriding the IEEE OUI and firmware revision in configfs for nvmet (Aleksandr Miloserdov) - Force reconnect when number of queue changes in nvmet (Daniel Wagner) - Minor fixes and improvements (Uros Bizjak, Joel Granados, Sagi Grimberg, Christoph Hellwig, Christophe JAILLET) - Fix and cleanup nvme-fc req allocation (Chaitanya Kulkarni) - Use the common tagset helpers in nvme-pci driver (Christoph Hellwig) - Cleanup the nvme-pci removal path (Christoph Hellwig) - Use kstrtobool() instead of strtobool (Christophe JAILLET) - Allow unprivileged passthrough of Identify Controller (Joel Granados) - Support io stats on the mpath device (Sagi Grimberg) - Minor nvmet cleanup (Sagi Grimberg) - MD pull requests via Song: - Code cleanups (Christoph) - Various fixes - Floppy pull request from Denis: - Fix a memory leak in the init error path (Yuan) - Series fixing some batch wakeup issues with sbitmap (Gabriel) - Removal of the pktcdvd driver that was deprecated more than 5 years ago, and subsequent removal of the devnode callback in struct block_device_operations as no users are now left (Greg) - Fix for partition read on an exclusively opened bdev (Jan) - Series of elevator API cleanups (Jinlong, Christoph) - Series of fixes and cleanups for blk-iocost (Kemeng) - Series of fixes and cleanups for blk-throttle (Kemeng) - Series adding concurrent support for sync queues in BFQ (Yu) - Series bringing drbd a bit closer to the out-of-tree maintained version (Christian, Joel, Lars, Philipp) - Misc drbd fixes (Wang) - blk-wbt fixes and tweaks for enable/disable (Yu) - Fixes for mq-deadline for zoned devices (Damien) - Add support for read-only and offline zones for null_blk (Shin'ichiro) - Series fixing the delayed holder tracking, as used by DM (Yu, Christoph) - Series enabling bio alloc caching for IRQ based IO (Pavel) - Series enabling userspace peer-to-peer DMA (Logan) - BFQ waker fixes (Khazhismel) - Series fixing elevator refcount issues (Christoph, Jinlong) - Series cleaning up references around queue destruction (Christoph) - Series doing quiesce by tagset, enabling cleanups in drivers (Christoph, Chao) - Series untangling the queue kobject and queue references (Christoph) - Misc fixes and cleanups (Bart, David, Dawei, Jinlong, Kemeng, Ye, Yang, Waiman, Shin'ichiro, Randy, Pankaj, Christoph) * tag 'for-6.2/block-2022-12-08' of git://git.kernel.dk/linux: (247 commits) blktrace: Fix output non-blktrace event when blk_classic option enabled block: sed-opal: Don't include sed-opal: allow using IOC_OPAL_SAVE for locking too blk-cgroup: Fix typo in comment block: remove bio_set_op_attrs nvmet: don't open-code NVME_NS_ATTR_RO enumeration nvme-pci: use the tagset alloc/free helpers nvme: add the Apple shared tag workaround to nvme_alloc_io_tag_set nvme: only set reserved_tags in nvme_alloc_io_tag_set for fabrics controllers nvme: consolidate setting the tagset flags nvme: pass nr_maps explicitly to nvme_alloc_io_tag_set block: bio_copy_data_iter nvme-pci: split out a nvme_pci_ctrl_is_dead helper nvme-pci: return early on ctrl state mismatch in nvme_reset_work nvme-pci: rename nvme_disable_io_queues nvme-pci: cleanup nvme_suspend_queue nvme-pci: remove nvme_pci_disable nvme-pci: remove nvme_disable_admin_queue nvme: merge nvme_shutdown_ctrl into nvme_disable_ctrl nvme: use nvme_wait_ready in nvme_shutdown_ctrl ...

block: Do not reread partition table on exclusively open device

2022-12-01T14:44:03+00:00

Since commit 10c70d95c0f2 ("block: remove the bd_openers checks in blk_drop_partitions") we allow rereading of partition table although there are users of the block device. This has an undesirable consequence that e.g. if sda and sdb are assembled to a RAID1 device md0 with partitions, BLKRRPART ioctl on sda will rescan partition table and create sda1 device. This partition device under a raid device confuses some programs (such as libstorage-ng used for initial partitioning for distribution installation) leading to failures. Fix the problem refusing to rescan partitions if there is another user that has the block device exclusively open. Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/20221130135344.2ul4cyfstfs3znxg@quack3 Fixes: 10c70d95c0f2 ("block: remove the bd_openers checks in blk_drop_partitions") Signed-off-by: Jan Kara Link: https://lore.kernel.org/r/20221130175653.24299-1-jack@suse.cz [axboe: fold in followup fix] Signed-off-by: Jens Axboe

block: untangle request_queue refcounting from sysfs

2022-11-30T18:09:00+00:00

The kobject embedded into the request_queue is used for the queue directory in sysfs, but that is a child of the gendisks directory and is intimately tied to it. Move this kobject to the gendisk and use a refcount_t in the request_queue for the actual request_queue refcounting that is completely unrelated to the device model. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20221114042637.1009333-5-hch@lst.de Signed-off-by: Jens Axboe

Merge tag 'block-6.1-2022-11-18' of git://git.kernel.dk/linux

2022-11-18T21:59:45+00:00

Pull block fixes from Jens Axboe: - NVMe pull request via Christoph: - Two more bogus nid quirks (Bean Huo, Tiago Dias Ferreira) - Memory leak fix in nvmet (Sagi Grimberg) - Regression fix for block cgroups pinning the wrong blkcg, causing leaks of cgroups and blkcgs (Chris) - UAF fix for drbd setup error handling (Dan) - Fix DMA alignment propagation in DM (Keith) * tag 'block-6.1-2022-11-18' of git://git.kernel.dk/linux: dm-log-writes: set dma_alignment limit in io_hints dm-integrity: set dma_alignment limit in io_hints block: make blk_set_default_limits() private dm-crypt: provide dma_alignment limit in io_hints block: make dma_alignment a stacking queue_limit nvmet: fix a memory leak in nvmet_auth_set_key nvme-pci: add NVME_QUIRK_BOGUS_NID for Netac NV7000 drbd: use after free in drbd_create_device() nvme-pci: add NVME_QUIRK_BOGUS_NID for Micron Nitro blk-cgroup: properly pin the parent in blkcg_css_online

block: make blk_set_default_limits() private

2022-11-16T22:58:11+00:00

There are no external users of this function. Signed-off-by: Keith Busch Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20221110184501.2451620-4-kbusch@meta.com Signed-off-by: Jens Axboe