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2021-08-09mm: hide laptop_mode_wb_timer entirely behind the BDI APIChristoph Hellwig
Don't leak the detaіls of the timer into the block layer, instead initialize the timer in bdi_alloc and delete it in bdi_unregister. Note that this means the timer is initialized (but not armed) for non-block queues as well now. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20210809141744.1203023-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-09block: remove support for delayed queue registrationsChristoph Hellwig
Now that device mapper has been changed to register the disk once it is fully ready all this code is unused. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Link: https://lore.kernel.org/r/20210804094147.459763-9-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-09block: support delayed holder registrationChristoph Hellwig
device mapper needs to register holders before it is ready to do I/O. Currently it does so by registering the disk early, which can leave the disk and queue in a weird half state where the queue is registered with the disk, except for sysfs and the elevator. And this state has been a bit promlematic before, and will get more so when sorting out the responsibilities between the queue and the disk. Support registering holders on an initialized but not registered disk instead by delaying the sysfs registration until the disk is registered. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Link: https://lore.kernel.org/r/20210804094147.459763-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-09block: look up holders by bdevChristoph Hellwig
Invert they way the holder relations are tracked. This very slightly reduces the memory overhead for partitioned devices. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210804094147.459763-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-09block: remove the extra kobject reference in bd_link_disk_holderChristoph Hellwig
Since commit 0d02129e76ed ("block: merge struct block_device and struct hd_struct") there is no way for the bdev to go away as long as there is a holder, so remove the extra references. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Link: https://lore.kernel.org/r/20210804094147.459763-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-09block: make the block holder code optionalChristoph Hellwig
Move the block holder code into a separate file as it is not in any way related to the other block_dev.c code, and add a new selectable config option for it so that we don't have to build it without any remapped drivers selected. The Kconfig symbol contains a _DEPRECATED suffix to match the comments added in commit 49731baa41df ("block: restore multiple bd_link_disk_holder() support"). Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Link: https://lore.kernel.org/r/20210804094147.459763-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-07Merge tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fixes from Jens Axboe: "A few minor fixes: - Fix ldm kernel-doc warning (Bart) - Fix adding offset twice for DMA address in n64cart (Christoph) - Fix use-after-free in dasd path handling (Stefan) - Order kyber insert trace correctly (Vincent) - raid1 errored write handling fix (Wei) - Fix blk-iolatency queue get failure handling (Yu)" * tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-block: kyber: make trace_block_rq call consistent with documentation block/partitions/ldm.c: Fix a kernel-doc warning blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit() n64cart: fix the dma address in n64cart_do_bvec s390/dasd: fix use after free in dasd path handling md/raid10: properly indicate failure when ending a failed write request
2021-08-06kyber: make trace_block_rq call consistent with documentationVincent Fu
The kyber ioscheduler calls trace_block_rq_insert() *after* the request is added to the queue but the documentation for trace_block_rq_insert() says that the call should be made *before* the request is added to the queue. Move the tracepoint for the kyber ioscheduler so that it is consistent with the documentation. Signed-off-by: Vincent Fu <vincent.fu@samsung.com> Link: https://lore.kernel.org/r/20210804194913.10497-1-vincent.fu@samsung.com Reviewed by: Adam Manzanares <a.manzanares@samsung.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-05blk-mq: Introduce the BLK_MQ_F_NO_SCHED_BY_DEFAULT flagBart Van Assche
elevator_get_default() uses the following algorithm to select an I/O scheduler from inside add_disk(): - In case of a single hardware queue or if sharing hardware queues across multiple request queues (BLK_MQ_F_TAG_HCTX_SHARED), use mq-deadline. - Otherwise, use 'none'. This is a good choice for most but not for all block drivers. Make it possible to override the selection of mq-deadline with a new flag, namely BLK_MQ_F_NO_SCHED_BY_DEFAULT. Cc: Christoph Hellwig <hch@lst.de> Cc: Ming Lei <ming.lei@redhat.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Martijn Coenen <maco@android.com> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20210805174200.3250718-2-bvanassche@acm.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-05block/partitions/ldm.c: Fix a kernel-doc warningBart Van Assche
Fix the following kernel-doc warning that appears when building with W=1: block/partitions/ldm.c:31: warning: expecting prototype for ldm(). Prototype was for ldm_debug() instead Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20210805173447.3249906-1-bvanassche@acm.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-05blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit()Yu Kuai
If queue is dying while iolatency_set_limit() is in progress, blk_get_queue() won't increment the refcount of the queue. However, blk_put_queue() will still decrement the refcount later, which will cause the refcout to be unbalanced. Thus error out in such case to fix the problem. Fixes: 8c772a9bfc7c ("blk-iolatency: fix IO hang due to negative inflight counter") Signed-off-by: Yu Kuai <yukuai3@huawei.com> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20210805124645.543797-1-yukuai3@huawei.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: remove blk-mq-sysfs dead codeDamien Le Moal
In block/blk-mq-sysfs.c, struct blk_mq_ctx_sysfs_entry is not used to define any attribute since the "mq" sysfs directory contains only sub-directories (no attribute files). As a result, blk_mq_sysfs_show(), blk_mq_sysfs_store(), and struct sysfs_ops blk_mq_sysfs_ops are all unused and unnecessary. Remove all this unused code. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Link: https://lore.kernel.org/r/20210713081837.524422-1-damien.lemoal@wdc.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: add a helper to raise a media changed eventMatteo Croce
Refactor disk_check_events() and move some code into disk_event_uevent(). Then add disk_force_media_change(), a helper which will be used by devices to force issuing a DISK_EVENT_MEDIA_CHANGE event. Co-developed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Matteo Croce <mcroce@microsoft.com> Tested-by: Luca Boccassi <bluca@debian.org> Link: https://lore.kernel.org/r/20210712230530.29323-6-mcroce@linux.microsoft.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: export diskseq in sysfsMatteo Croce
Add a new sysfs handle to export the new diskseq value. Place it in <sysfs>/block/<disk>/diskseq and document it. $ grep . /sys/class/block/*/diskseq /sys/class/block/loop0/diskseq:13 /sys/class/block/loop1/diskseq:14 /sys/class/block/loop2/diskseq:5 /sys/class/block/loop3/diskseq:6 /sys/class/block/ram0/diskseq:1 /sys/class/block/ram1/diskseq:2 /sys/class/block/vda/diskseq:7 Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Matteo Croce <mcroce@microsoft.com> Tested-by: Luca Boccassi <bluca@debian.org> Link: https://lore.kernel.org/r/20210712230530.29323-5-mcroce@linux.microsoft.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: add ioctl to read the disk sequence numberMatteo Croce
Add a new BLKGETDISKSEQ ioctl which retrieves the disk sequence number from the genhd structure. # ./getdiskseq /dev/loop* /dev/loop0: 13 /dev/loop0p1: 13 /dev/loop0p2: 13 /dev/loop0p3: 13 /dev/loop1: 14 /dev/loop1p1: 14 /dev/loop1p2: 14 /dev/loop2: 5 /dev/loop3: 6 Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Matteo Croce <mcroce@microsoft.com> Tested-by: Luca Boccassi <bluca@debian.org> Link: https://lore.kernel.org/r/20210712230530.29323-4-mcroce@linux.microsoft.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: export the diskseq in ueventsMatteo Croce
Export the newly introduced diskseq in uevents: $ udevadm info /sys/class/block/* |grep -e DEVNAME -e DISKSEQ E: DEVNAME=/dev/loop0 E: DISKSEQ=1 E: DEVNAME=/dev/loop1 E: DISKSEQ=2 E: DEVNAME=/dev/loop2 E: DISKSEQ=3 E: DEVNAME=/dev/loop3 E: DISKSEQ=4 E: DEVNAME=/dev/loop4 E: DISKSEQ=5 E: DEVNAME=/dev/loop5 E: DISKSEQ=6 E: DEVNAME=/dev/loop6 E: DISKSEQ=7 E: DEVNAME=/dev/loop7 E: DISKSEQ=8 E: DEVNAME=/dev/nvme0n1 E: DISKSEQ=9 E: DEVNAME=/dev/nvme0n1p1 E: DISKSEQ=9 E: DEVNAME=/dev/nvme0n1p2 E: DISKSEQ=9 E: DEVNAME=/dev/nvme0n1p3 E: DISKSEQ=9 E: DEVNAME=/dev/nvme0n1p4 E: DISKSEQ=9 E: DEVNAME=/dev/nvme0n1p5 E: DISKSEQ=9 E: DEVNAME=/dev/sda E: DISKSEQ=10 E: DEVNAME=/dev/sda1 E: DISKSEQ=10 E: DEVNAME=/dev/sda2 E: DISKSEQ=10 Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Matteo Croce <mcroce@microsoft.com> Tested-by: Luca Boccassi <bluca@debian.org> Link: https://lore.kernel.org/r/20210712230530.29323-3-mcroce@linux.microsoft.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: add disk sequence numberMatteo Croce
Associating uevents with block devices in userspace is difficult and racy: the uevent netlink socket is lossy, and on slow and overloaded systems has a very high latency. Block devices do not have exclusive owners in userspace, any process can set one up (e.g. loop devices). Moreover, device names can be reused (e.g. loop0 can be reused again and again). A userspace process setting up a block device and watching for its events cannot thus reliably tell whether an event relates to the device it just set up or another earlier instance with the same name. Being able to set a UUID on a loop device would solve the race conditions. But it does not allow to derive orderings from uevents: if you see a uevent with a UUID that does not match the device you are waiting for, you cannot tell whether it's because the right uevent has not arrived yet, or it was already sent and you missed it. So you cannot tell whether you should wait for it or not. Associating a unique, monotonically increasing sequential number to the lifetime of each block device, which can be retrieved with an ioctl immediately upon setting it up, allows to solve the race conditions with uevents, and also allows userspace processes to know whether they should wait for the uevent they need or if it was dropped and thus they should move on. Additionally, increment the disk sequence number when the media change, i.e. on DISK_EVENT_MEDIA_CHANGE event. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Matteo Croce <mcroce@microsoft.com> Tested-by: Luca Boccassi <bluca@debian.org> Link: https://lore.kernel.org/r/20210712230530.29323-2-mcroce@linux.microsoft.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: remove cmdline-parser.cChristoph Hellwig
cmdline-parser.c is only used by the cmdline faux partition format, so merge the code into that and avoid an indirect call. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210728053756.409654-1-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: remove disk_name()Christoph Hellwig
Remove the disk_name function now that all users are gone. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727062518.122108-7-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: simplify disk name formatting in check_partitionChristoph Hellwig
disk_name for partition 0 just copies out the disk_name field. Replace the call to disk_name with a %s format specifier. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727062518.122108-6-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: simplify printing the device names disk_stack_limitsChristoph Hellwig
Printk ->disk_name directly for the disk and use the %pg format specifier for the block device, which is equivalent to a bdevname call. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727062518.122108-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: use the %pg format specifier in show_partitionChristoph Hellwig
Simplify printing the partition name by using the %pg format specifier that is equivalent to a bdevname call. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727062518.122108-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: use the %pg format specifier in printk_all_partitionsChristoph Hellwig
Simplify printing the partition name by using the %pg format specifier that is equivalent to a bdevname call. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727062518.122108-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: reduce stack usage in diskstats_showAbd-Alrhman Masalkhi
I have compiled the kernel with a cross compiler "hppa-linux-gnu-" v9.3.0 on x86-64 host machine. I got the following warning: block/genhd.c: In function ‘diskstats_show’: block/genhd.c:1227:1: warning: the frame size of 1688 bytes is larger than 1280 bytes [-Wframe-larger-than=] 1227 | } By Reduced the stack footprint by using the %pg printk specifier instead of disk_name to remove the need for the on-stack buffer. Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727062518.122108-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: remove bdputChristoph Hellwig
Now that we've stopped using inode references for anything meaninful in the block layer get rid of the helper to put it and just open code the call to iput on the block_device inode. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: Chaitanya Kulkarni <ckulkarnilinux@gmail.com> Link: https://lore.kernel.org/r/20210722075402.983367-10-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: change the refcounting for partitionsChristoph Hellwig
Instead of acquiring an inode reference on open make sure partitions always hold device model references to the disk while alive, and switch open to grab only a device model reference to the opened block device. If that is a partition the disk reference is transitively held by the partition already. Link: https://lore.kernel.org/r/20210722075402.983367-6-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: allocate bd_meta_info later in add_partitionsChristoph Hellwig
Move the allocation of bd_meta_info after initializing the struct device to avoid the special bdput error handling path. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20210722075402.983367-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: unhash the whole device inode earlierChristoph Hellwig
Unhash the whole device inode early in del_gendisk. This allows to remove the first GENHD_FL_UP check in the open path as we simply won't find a just removed inode. The second non-racy check after taking open_mutex is still kept. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210722075402.983367-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: assert the locking state in delete_partitionChristoph Hellwig
Add a lockdep assert instead of the outdated locking comment. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Chaitanya Kulkarni <ckulkarnilinux@gmail.com> Link: https://lore.kernel.org/r/20210722075402.983367-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: use bvec_kmap_local in bio_integrity_processChristoph Hellwig
Using local kmaps slightly reduces the chances to stray writes, and the bvec interface cleans up the code a little bit. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727055646.118787-16-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: use bvec_kmap_local in t10_pi_type1_{prepare,complete}Christoph Hellwig
Using local kmaps slightly reduces the chances to stray writes, and the bvec interface cleans up the code a little bit. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727055646.118787-15-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: use memcpy_from_bvec in __blk_queue_bounceChristoph Hellwig
Rewrite the actual bounce buffering loop in __blk_queue_bounce to that the memcpy_to_bvec helper can be used to perform the data copies. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727055646.118787-14-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: use memcpy_from_bvec in bio_copy_kern_endio_readChristoph Hellwig
Use memcpy_from_bvec instead of open coding the logic. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727055646.118787-13-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: use memcpy_to_bvec in copy_to_high_bio_irqChristoph Hellwig
Use memcpy_to_bvec instead of opencoding the logic. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727055646.118787-12-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: rewrite bio_copy_data_iter to use bvec_kmap_local and memcpy_to_bvecChristoph Hellwig
Use the proper helpers instead of open coding the copy. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20210727055646.118787-11-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-02block: use memzero_page in zero_fill_bioChristoph Hellwig
Use memzero_bvec to zero each segment in the bio instead of manually mapping and zeroing the data. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Link: https://lore.kernel.org/r/20210727055646.118787-6-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-08-01scsi: bsg-lib: Fix commands without data transfer in bsg_transport_sg_io_fn()Christoph Hellwig
Set ret to 0 after the initial permission checks to avoid leaking -EPERM for commands without data transfer. Link: https://lore.kernel.org/r/20210731074027.1185545-3-hch@lst.de Fixes: 75ca56409e5b ("scsi: bsg: Move the whole request execution into the SCSI/transport handlers") Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-30scsi: bsg: Move the whole request execution into the SCSI/transport handlersChristoph Hellwig
Remove the amount of indirect calls by making the handler responsible for the entire execution of the request. Link: https://lore.kernel.org/r/20210729064845.1044147-5-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-30scsi: block: Remove the remaining SG_IO-related fields from struct request_queueChristoph Hellwig
Move the sg_timeout and sg_reserved_size fields into the bsg_device and scsi_device structures as they have nothing to do with generic block I/O. Note that these values are now separate for bsg vs. SCSI device node access, but that just matches how /dev/sg vs the other nodes has always behaved. Link: https://lore.kernel.org/r/20210729064845.1044147-4-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-30scsi: bsg: Simplify device registrationChristoph Hellwig
Use the per-device cdev_device_interface to store the bsg data in the char device inode, and thus remove the need to embedd the bsg_class_device structure in the request_queue. Link: https://lore.kernel.org/r/20210729064845.1044147-2-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-30Merge tag 'block-5.14-2021-07-30' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fixes from Jens Axboe: - gendisk freeing fix (Christoph) - blk-iocost wake ordering fix (Tejun) - tag allocation error handling fix (John) - loop locking fix. While this isn't the prettiest fix in the world, nobody has any good alternatives for 5.14. Something to likely revisit for 5.15. (Tetsuo) * tag 'block-5.14-2021-07-30' of git://git.kernel.dk/linux-block: block: delay freeing the gendisk blk-iocost: fix operation ordering in iocg_wake_fn() blk-mq-sched: Fix blk_mq_sched_alloc_tags() error handling loop: reintroduce global lock for safe loop_validate_file() traversal
2021-07-28scsi: core: Rename CONFIG_BLK_SCSI_REQUEST to CONFIG_SCSI_COMMONChristoph Hellwig
CONFIG_BLK_SCSI_REQUEST is rather misnamed as it enables building a small amount of code shared by the SCSI initiator, target, and consumers of the scsi_request passthrough API. Rename it and also allow building it as a module. [mkp: add module license] Link: https://lore.kernel.org/r/20210724072033.1284840-20-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Move the "block layer" SCSI ioctl handling to drivers/scsiChristoph Hellwig
Merge the ioctl handling in block/scsi_ioctl.c into its only caller in drivers/scsi/scsi_ioctl.c. Link: https://lore.kernel.org/r/20210724072033.1284840-19-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Simplify SCSI passthrough permission checkingChristoph Hellwig
Remove the separate command filter structure and just use a switch statement (which also cought two duplicate commands), return a bool and give the function a sensible name. Link: https://lore.kernel.org/r/20210724072033.1284840-18-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Move scsi_command_size_tbl to scsi_common.cChristoph Hellwig
Move the SCSI command size table to common SCSI code. Link: https://lore.kernel.org/r/20210724072033.1284840-17-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Remove scsi_req_init()Christoph Hellwig
Merge scsi_req_init() into its only caller. Link: https://lore.kernel.org/r/20210724072033.1284840-16-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: bsg: Move bsg_scsi_ops to drivers/scsi/Christoph Hellwig
Move the SCSI-specific bsg code in the SCSI midlayer instead of in the common bsg code. This just keeps the common bsg code block/ and also allows building it as a module. Link: https://lore.kernel.org/r/20210724072033.1284840-15-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: bsg: Decouple from scsi_cmd_ioctl()Christoph Hellwig
Decouple bsg from scsi_cmd_ioctl(). This requires a small amount of code duplication, but will allow moving all SCSI ioctl handling into SCSI midlayer. Link: https://lore.kernel.org/r/20210724072033.1284840-14-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: block: Add a queue_max_bytes() helperChristoph Hellwig
Return the max_sectors value in bytes. Lifted from scsi_ioctl.c. Link: https://lore.kernel.org/r/20210724072033.1284840-13-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Remove scsi_verify_blk_ioctl()Christoph Hellwig
Manually verify that the device is not a partition and the caller has admin privіleges at the beginning of the sr ioctl method and open code the trivial check for sd as well. Link: https://lore.kernel.org/r/20210724072033.1284840-11-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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