selftests: ublk: add support for --io_desc_size

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Add an optional --io_desc_size argument to the kublk add/recover
commands to enable UBLK_F_IO_DESC on the ublk device. The mmap()
arguments and ublk_get_iod() computation are adjusted accordingly.

Display the configured io_desc_size in the kublk list output for ublk
devices with UBLK_F_IO_DESC.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Link: https://patch.msgid.link/20260803211441.2538144-7-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Caleb Sander Mateos 2026-08-03 15:14:38 -06:00 • committed by Jens Axboe

parent 5c0958d801

commit fc01b96d74

2 changed files with 24 additions and 11 deletions

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29

tools/testing/selftests/ublk/kublk.c

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6

tools/testing/selftests/ublk/kublk.h

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