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houseme
f262fcfce0
Close the ~10ms instrumentation residual on the PUT success path that the existing coarse writer_setup/encode/rename stage metrics do not attribute. Adds `hp_guard!` measurement scopes to the previously uninstrumented sub-stages called out in backlog#935 item 2: - SetDisks::acquire_read_lock / acquire_write_lock (namespace lock acquire) - S3::put_object_prelookup (pre-write get_object_info lookup) - MultiWriter::shutdown (bitrot writer flush/close) - SetDisks::commit_rename_data_dir (old data-dir reclaim) - S3Access::put_object (S3 authorization segment) Instrumentation only: `hp_guard!` expands to nothing without the `hotpath` feature, so this is a pure-observation change with zero behavior impact and zero cost in default builds. The pre-lookup site wraps only the lookup call in a scoped block so the guard measures that slice exactly while preserving the existing match and control flow. Verified: cargo check -p rustfs-ecstore (default and --features hotpath) and cargo check -p rustfs (default and --features hotpath) all pass. Co-authored-by: heihutu <heihutu@gmail.com>