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selftests: ublk: add ublk_io_buf_idx() for returning io buffer index

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Since UBLK_F_PER_IO_DAEMON is added, io buffer index may depend on current
thread because the common way is to use per-pthread io_ring_ctx for issuing
ublk uring_cmd.

Add one helper for returning io buffer index, so we can hide the buffer
index implementation details for target code.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2026-01-16 22:18:50 +08:00 • committed by Jens Axboe
commit f1d621b5a0
5 changed files with 33 additions and 20 deletions
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