[3.8] gh-112275: Fix HEAD_LOCK deadlock in child process after fork (GH-112336) (GH-123688) #123713
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HEAD_LOCK is called from _PyEval_ReInitThreads->_PyThreadState_DeleteExcept before _PyRuntimeState_ReInitThreads reinit runtime->interpreters.mutex which might be locked before fork.
(cherry picked from commit 522799a)
(cherry picked from commit 0152431)
Co-authored-by: Łukasz Langa [email protected]
Co-authored-by: ChuBoning [email protected]