From: Andreas Hindborg <a.hindborg@xxxxxxxxxxx> Hi All, This patch set adds zoned storage support to `ublk`. The first 3 patches do some house cleaning in preparation for the last patch. The last patch adds support for report_zones and the following operations: - REQ_OP_ZONE_OPEN - REQ_OP_ZONE_CLOSE - REQ_OP_ZONE_FINISH - REQ_OP_ZONE_RESET - REQ_OP_ZONE_APPEND Changes for v5: - Merge zone append patch and zone ops patch - Use defines instead of enum for opcodes - Add a helper `ublk_dev_is_zoned()` - Add a helper `ublk_dev_is_user_copy()` - Fix a leak in `ublk_report_zones()` - Use goto to handle cleanup in `ublk_report_zones()` - Change name of module from `ublk` back to `ublk_drv` and rename source files - Fail to add device if user copy is not supported (implicitly fail to start device under same condition) - Fail to add device if kernel is not compiled with CONFIG_BLK_DEV_ZONED - Fail to apply device parameters if chunk_sectors is not set while zoned support is requested - Change kconfig entry - Check max open/active zones are valid - Document UBLK_IO_OP_REPORT_ZONES buffer format - Use function stubs rather than if(IS_ENABLED(...)) - Improve validation of zoned parameters A user space component based on ubdsrv is available for testing [1] with the "loop" target. No changes are required for user space for v4 -> v5. Read/write and zone operations are tested with zenfs [3]. The zone append path is tested with fio -> zonefs -> ublk -> null_blk. The implementation of zone append requires ublk user copy feature, and therefore the series is based on branch for-next (6afa337a3789) of [4]. [1] https://github.com/metaspace/ubdsrv/commit/7de0d901c329fde7dc5a2e998952dd88bf5e668b [2] https://lore.kernel.org/linux-block/20230316145539.300523-1-nmi@xxxxxxxxxxxx/ [3] https://github.com/westerndigitalcorporation/zenfs [4] https://git.kernel.dk/linux.git Andreas Hindborg (5): ublk: add opcode offsets for DRV_IN/DRV_OUT ublk: move types to shared header file ublk: rename driver files to prepare for multiple translation units ublk: add helper to check if device supports user copy ublk: enable zoned storage support MAINTAINERS | 4 +- drivers/block/Kconfig | 5 + drivers/block/Makefile | 2 + drivers/block/ublk-zoned.c | 225 +++++++++++++++++++++++++++ drivers/block/{ublk_drv.c => ublk.c} | 186 ++++++++++------------ drivers/block/ublk.h | 180 +++++++++++++++++++++ include/uapi/linux/ublk_cmd.h | 44 +++++- 7 files changed, 533 insertions(+), 113 deletions(-) create mode 100644 drivers/block/ublk-zoned.c rename drivers/block/{ublk_drv.c => ublk.c} (95%) create mode 100644 drivers/block/ublk.h base-commit: 3261ea42710e9665c9151006049411bd23b5411f -- 2.41.0
