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abe54c1603
Add support in kublk for decoupled ublk_queues and ublk server threads. kublk now has two modes of operation: - (preexisting mode) threads and queues are paired 1:1, and each thread services all the I/Os of one queue - (new mode) thread and queue counts are independently configurable. threads service I/Os in a way that balances load across threads even if load is not balanced over queues. The default is the preexisting mode. The new mode is activated by passing the --per_io_tasks flag. Signed-off-by: Uday Shankar <ushankar@purestorage.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250529-ublk_task_per_io-v8-6-e9d3b119336a@purestorage.com Signed-off-by: Jens Axboe <axboe@kernel.dk>