user/sven/linux.git/Documentation/block, branch v6.4.3

Documentation/block: drop the request.rst file

2023-05-12T17:04:58Z

Documentation/block/request.rst is outdated and should be removed. Also delete its entry in the block/index.rst file. Signed-off-by: Randy Dunlap Cc: Jens Axboe Cc: linux-block@vger.kernel.org Cc: Jonathan Corbet Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/20230507182606.12647-1-rdunlap@infradead.org Signed-off-by: Jens Axboe

blk-crypto: remove blk_crypto_insert_cloned_request()

2023-03-16T15:35:09Z

blk_crypto_insert_cloned_request() is the same as blk_crypto_rq_get_keyslot(), so just use that directly. Signed-off-by: Eric Biggers Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20230315183907.53675-2-ebiggers@kernel.org Signed-off-by: Jens Axboe

block: stub out and deprecated the capability attribute on the gendisk

2023-02-06T15:44:55Z

The capability attribute was added in 2017 to expose the kernel internal GENHD_FL_MEDIA_CHANGE_NOTIFY to userspace without ever adding a value to an UAPI header, and without ever setting it in any driver until it was finally removed in Linux 5.7. Deprecate the file and always return 0 instead of exposing the other internal and frequently renumbered other gendisk flags. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Bart Van Assche Link: https://lore.kernel.org/r/20230203150209.3199115-1-hch@lst.de Signed-off-by: Jens Axboe

block: ublk: fix doc build warning

2023-01-29T22:18:34Z

Fix the following warning: Documentation/block/ublk.rst:157: WARNING: Enumerated list ends without a blank line; unexpected unindent. Documentation/block/ublk.rst:171: WARNING: Enumerated list ends without a blank line; unexpected unindent. Fixes: 56f5160bc1b8 ("ublk_drv: add mechanism for supporting unprivileged ublk device") Reported-by: Stephen Rothwell Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20230118042318.127900-1-ming.lei@redhat.com Signed-off-by: Jens Axboe

ublk_drv: add mechanism for supporting unprivileged ublk device

2023-01-29T22:18:34Z

unprivileged ublk device is helpful for container use case, such as: ublk device created in one unprivileged container can be controlled and accessed by this container only. Implement this feature by adding flag of UBLK_F_UNPRIVILEGED_DEV, and if this flag isn't set, any control command has been run from privileged user. Otherwise, any control command can be sent from any unprivileged user, but the user has to be permitted to access the ublk char device to be controlled. In case of UBLK_F_UNPRIVILEGED_DEV: 1) for command UBLK_CMD_ADD_DEV, it is always allowed, and user needs to provide owner's uid/gid in this command, so that udev can set correct ownership for the created ublk device, since the device owner uid/gid can be queried via command of UBLK_CMD_GET_DEV_INFO. 2) for other control commands, they can only be run successfully if the current user is allowed to access the specified ublk char device, for running the permission check, path of the ublk char device has to be provided by these commands. Also add one control of command UBLK_CMD_GET_DEV_INFO2 which always include the char dev path in payload since userspace may not have knowledge if this device is created in unprivileged mode. For applying this mechanism, system administrator needs to take the following policies: 1) chmod 0666 /dev/ublk-control 2) change ownership of ublkcN & ublkbN - chown owner_uid:owner_gid /dev/ublkcN - chown owner_uid:owner_gid /dev/ublkbN Both can be done via one simple udev rule. Userspace: https://github.com/ming1/ubdsrv/tree/unprivileged-ublk 'ublk add -t $TYPE --un_privileged=1' is for creating one un-privileged ublk device if the user is un-privileged. Link: https://lore.kernel.org/linux-block/YoOr6jBfgVm8GvWg@stefanha-x1.localdomain/ Suggested-by: Stefan Hajnoczi Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20230106041711.914434-7-ming.lei@redhat.com Signed-off-by: Jens Axboe

blk-crypto: don't use struct request_queue for public interfaces

2022-11-21T18:39:05Z

Switch all public blk-crypto interfaces to use struct block_device arguments to specify the device they operate on instead of th request_queue, which is a block layer implementation detail. Signed-off-by: Christoph Hellwig Reviewed-by: Eric Biggers Link: https://lore.kernel.org/r/20221114042944.1009870-2-hch@lst.de Signed-off-by: Jens Axboe

Documentation: document ublk user recovery feature

2022-10-18T12:12:26Z

Add documentation for user recovery feature of ublk subsystem. Signed-off-by: ZiyangZhang Reviewed-by: Ming Lei Link: https://lore.kernel.org/r/20221018045346.99706-2-ZiyangZhang@linux.alibaba.com Signed-off-by: Jens Axboe

Documentation: document ublk

2022-09-02T15:31:15Z

Add documentation for ublk subsystem. It was supposed to be documented when merging the driver, but missing at that time. Cc: Bagas Sanjaya Cc: Jonathan Corbet Cc: Richard W.M. Jones Cc: Xiaoguang Wang Reviewed-by: Stefan Hajnoczi Reviewed-by: ZiyangZhang Signed-off-by: Ming Lei [axboe: correct MAINTAINERS addition] Signed-off-by: Jens Axboe

null_blk: add module parameters for 4 options

2022-08-02T23:14:50Z

Add as module parameters these options: memory_backed discard mbps cache_size Previously these could only be set via configfs. Still missing is bad_blocks. The kernel test robot found a documentation formatting issue in v1 of this patch. Reported-by: kernel test robot Signed-off-by: Vincent Fu Link: https://lore.kernel.org/r/20220708174943.87787-2-vincent.fu@samsung.com Signed-off-by: Jens Axboe

block: remove biodoc.rst

2022-02-15T14:47:52Z

This document is completely out of date and extremely misleading. In general the existing kerneldoc comment serve as a much better documentation of the still existing functionality, while the history blurbs are pretty much irrelevant today. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20220215081047.3693582-1-hch@lst.de Signed-off-by: Jens Axboe