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chore(storage): drop dead backpressure and lock-optimizer wrappers (#6195)

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Neither rustfs/src/storage/backpressure.rs nor rustfs/src/storage/lock_optimizer.rs had a production caller: their only non-self references were the pub mod lines in storage/mod.rs and a cfg(test) module, so the object transfer path never applied this backpressure and never took these lock shortcuts.

The six removed tests in concurrent_fix_test.rs duplicated tests that lived inside the deleted files; the shared primitives they shadowed keep their own coverage in rustfs-io-core.
This commit is contained in:
Zhengchao An
2026-08-18 12:51:44 +08:00
committed by GitHub
parent deb0edb7cc
commit c7a29ec0a7
6 changed files with 4 additions and 1162 deletions
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docs/architecture/global-state-inventory.md
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@@ -105,7 +105,6 @@ inventory. Generic function-local names such as `CACHE`, `LOCK`, `INIT`, and
| `USE_STARSHARD_CACHE`, `BUCKET_CACHE_SMALL`, `BUCKET_CACHE_LARGE` | `rustfs/src/storage/ecfs_extend.rs` | Cache or constant / owner-local cache | Bucket validation cache backend selection and cache storage stay private to the ECFS extension owner. |
| `GLOBAL_SSE_DEK_PROVIDER`, `SSE_TEST_LOCK` | `rustfs/src/storage/sse.rs` | Owner-local cache / test state | SSE DEK provider cache and test serialization lock stay private to the SSE owner. |
| `AUTH_FS` | `rustfs/src/storage/access.rs` | Cache or constant / owner-local cache | Authorization tag-condition lookup keeps its filesystem helper private to the access owner. |
| `LOCK_STATS` | `rustfs/src/storage/lock_optimizer.rs` | Process-global owner-local metrics | Lock optimization statistics stay private behind lock optimizer helper APIs. |
| `DEADLOCK_DETECTOR` | `rustfs/src/storage/deadlock_detector.rs` | Process-global owner-local state | Deadlock detector lifecycle state stays private to the storage deadlock detector owner. |
| `CONCURRENCY_MANAGER`, `ACTIVE_GET_REQUESTS`, `ACTIVE_PUT_REQUESTS` | `rustfs/src/storage/concurrency/*` | Process-global owner-local scheduler state | Storage concurrency manager and request counters remain inside the storage concurrency owner boundary. |
| `GET_OBJECT_BUFFER_THRESHOLD_WARNED`, `GET_READER_STREAM_BUFFER_SIZE_OVERRIDE`, function-local `ENABLED`, `OBJECT_SEEK_SUPPORT_THRESHOLD`, `OBJECT_SEEK_SUPPORT_CONCURRENCY_THRESHOLDS` | `rustfs/src/app/object_usecase.rs` | Cache or constant / owner-local cache | Object GET/seek tuning caches and warning guards stay private to object usecase helpers. |