linux/drivers/block/Kconfig, branch master

rbd: stop selecting CRC32, CRYPTO, and CRYPTO_AES

2025-12-10T10:50:54Z

None of the RBD code directly requires CRC32, CRYPTO, or CRYPTO_AES. These options are needed by CEPH_LIB code and they are selected there directly. Signed-off-by: Ilya Dryomov Reviewed-by: Dongsheng Yang

rnull: move driver to separate directory

2025-09-02T11:23:56Z

The rust null block driver is about to gain some additional modules. Rather than pollute the current directory, move the driver to a subdirectory. Reviewed-by: Alice Ryhl Reviewed-by: Daniel Almeida Signed-off-by: Andreas Hindborg Link: https://lore.kernel.org/r/20250902-rnull-up-v6-16-v7-12-b5212cc89b98@kernel.org Signed-off-by: Jens Axboe

block: remove pktcdvd driver

2025-07-07T13:02:42Z

This driver has long outlived it's utility, and it's broken and unloved. The main use case for this was direct mount with UDF of cd-rw drives that required 32kb packets. It would collect writes into that size and write them out in multiples of that. That's not a common use case anymore, the world has moved on from those kinds of media. To make matters worse, it's actively breaking setups where it's not even required or useful. Link: https://lore.kernel.org/linux-block/fxg6dksau4jsk3u5xldlyo2m7qgiux6vtdrz5rywseotsouqdv@urcrwz6qtd3r/ Link: https://lore.kernel.org/linux-block/dcc4836e-6da9-4208-ad27-bbd44b3a2063@kernel.dk/ Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe

Documentation: Document the new zoned loop block device driver

2025-05-01T23:03:56Z

Introduce the zoned_loop.rst documentation file under admin-guide/blockdev to document the zoned loop block device driver. An overview of the driver is provided and its usage to create and delete zoned devices described. Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20250407075222.170336-3-dlemoal@kernel.org Signed-off-by: Jens Axboe

block: new zoned loop block device driver

2025-05-01T23:03:56Z

The zoned loop block device driver allows a user to create emulated zoned block devices using one regular file per zone as backing storage. Compared to null_blk or scsi_debug, it has the advantage of allowing emulating large zoned devices without requiring the same amount of memory as the capacity of the emulated device. Furthermore, zoned devices emulated with this driver can be re-started after a host reboot without any loss of the state of the device zones, which is something that null_blk and scsi_debug do not support. This initial implementation is simple and does not support zone resource limits. That is, a zoned loop block device limits for the maximum number of open zones and maximum number of active zones is always 0. This driver can be either compiled in-kernel or as a module, named "zloop". Compilation of this driver depends on the block layer support for zoned block device (CONFIG_BLK_DEV_ZONED must be set). Using the zloop driver to create and delete zoned block devices is done by writing commands to the zoned loop control character device file (/dev/zloop-control). Creating a device is done with: $ echo "add [options]" > /dev/zloop-control The options available for the "add" operation cat be listed by reading the zloop-control device file: $ cat /dev/zloop-control add id=%d,capacity_mb=%u,zone_size_mb=%u,zone_capacity_mb=%u,conv_zones=%u,base_dir=%s,nr_queues=%u,queue_depth=%u remove id=%d The options available allow controlling the zoned device total capacity, zone size, zone capactity of sequential zones, total number of conventional zones, base directory for the zones backing file, number of I/O queues and the maximum queue depth of I/O queues. Deleting a device is done using the "remove" command: $ echo "remove id=0" > /dev/zloop-control This implementation passes various tests using zonefs and fio (t/zbd tests) and provides a state machine for zone conditions that is compliant with the T10 ZBC and NVMe ZNS specifications. Co-developed-by: Christoph Hellwig Signed-off-by: Damien Le Moal Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20250407075222.170336-2-dlemoal@kernel.org Signed-off-by: Jens Axboe

Merge tag 'block-6.15-20250417' of git://git.kernel.dk/linux

2025-04-18T16:21:14Z

Pull block fixes from Jens Axboe: - MD pull via Yu: - fix raid10 missing discard IO accounting (Yu Kuai) - fix bitmap stats for bitmap file (Zheng Qixing) - fix oops while reading all member disks failed during check/repair (Meir Elisha) - NVMe pull via Christoph: - fix scan failure for non-ANA multipath controllers (Hannes Reinecke) - fix multipath sysfs links creation for some cases (Hannes Reinecke) - PCIe endpoint fixes (Damien Le Moal) - use NULL instead of 0 in the auth code (Damien Le Moal) - Various ublk fixes: - Slew of selftest additions - Improvements and fixes for IO cancelation - Tweak to Kconfig verbiage - Fix for page dirtying for blk integrity mapped pages - loop fixes: - buffered IO fix - uevent fixes - request priority inheritance fix - Various little fixes * tag 'block-6.15-20250417' of git://git.kernel.dk/linux: (38 commits) selftests: ublk: add generic_06 for covering fault inject ublk: simplify aborting ublk request ublk: remove __ublk_quiesce_dev() ublk: improve detection and handling of ublk server exit ublk: move device reset into ublk_ch_release() ublk: rely on ->canceling for dealing with ublk_nosrv_dev_should_queue_io ublk: add ublk_force_abort_dev() ublk: properly serialize all FETCH_REQs selftests: ublk: move creating UBLK_TMP into _prep_test() selftests: ublk: add test_stress_05.sh selftests: ublk: support user recovery selftests: ublk: support target specific command line selftests: ublk: increase max nr_queues and queue depth selftests: ublk: set queue pthread's cpu affinity selftests: ublk: setup ring with IORING_SETUP_SINGLE_ISSUER/IORING_SETUP_DEFER_TASKRUN selftests: ublk: add two stress tests for zero copy feature selftests: ublk: run stress tests in parallel selftests: ublk: make sure _add_ublk_dev can return in sub-shell selftests: ublk: cleanup backfile automatically selftests: ublk: add io_uring uapi header ...

ublk: don't suggest CONFIG_BLK_DEV_UBLK=Y

2025-04-16T00:59:33Z

The CONFIG_BLK_DEV_UBLK help text suggests setting the config option to Y so task_work_add() can be used to dispatch I/O, improving performance. However, this mechanism was removed in commit 29dc5d06613f2 ("ublk: kill queuing request by task_work_add"). So remove this paragraph from the config help text. Signed-off-by: Caleb Sander Mateos Reviewed-by: Uday Shankar Link: https://lore.kernel.org/r/20250416004111.3242817-1-csander@purestorage.com Signed-off-by: Jens Axboe

lib/crc: remove CONFIG_LIBCRC32C

2025-04-04T18:31:42Z

Now that LIBCRC32C does nothing besides select CRC32, make every option that selects LIBCRC32C instead select CRC32 directly. Then remove LIBCRC32C. Reviewed-by: Christoph Hellwig Reviewed-by: "Martin K. Petersen" Acked-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20250401221600.24878-8-ebiggers@kernel.org Signed-off-by: Eric Biggers

reiserfs: The last commit

2024-10-21T14:29:38Z

Deprecation period of reiserfs ends with the end of this year so it is time to remove it from the kernel. Acked-by: Darrick J. Wong Acked-by: Christian Brauner Signed-off-by: Jan Kara

rust: block: add rnull, Rust null_blk implementation

2024-06-14T13:45:04Z

This patch adds an initial version of the Rust null block driver. Signed-off-by: Andreas Hindborg Reviewed-by: Benno Lossin Link: https://lore.kernel.org/r/20240611114551.228679-3-nmi@metaspace.dk Signed-off-by: Jens Axboe