Replace tokio::spawn with direct async future in read_all_fileinfo_full_wait. join_all already provides concurrency, so tokio::spawn adds unnecessary task creation and scheduling overhead. Changes: - Remove tokio::spawn from metadata fanout futures - Update result handling for direct future results Expected impact: 16-32us reduction per GET request. Closes rustfs/backlog#769 Co-Authored-By: heihutu <[email protected]>