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上海的陆家嘴
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Overview

The Rust for Linux project has been engulfed in controversy, with a key maintainer announcing his departure due to non-technical reasons. Wedson Almeida Filho, a Microsoft engineer who has contributed significantly to the project, cited a lack of respect and a drain on his enthusiasm as the primary reasons for his exit. This internal strife highlights the broader tension within the open-source community between maintaining stable codebases and embracing innovation.

Maintainer’s Resignation

In a recent post on the Linux kernel mailing list, Filho announced his decision to step down from the Rust for Linux maintainers’ team. I have found my energy and enthusiasm being severely eroded over the past four years, he wrote. I am increasingly resistant to responding to废话 that has nothing to do with technology. It would be best to leave this task to those who still have the passion for it.

Filho expressed his gratitude to the Rust for Linux team, noting that working with them to discuss technical issues and find solutions to security vulnerabilities had been a valuable experience. He emphasized his belief in the future of kernel development lying in memory-safe languages, but his frustration with the current environment led to his decision to leave.

The Debate Over Rust in the Linux Kernel

The controversy surrounding the integration of Rust into the Linux kernel has sparked intense debate within the Linux community. The debate centers on whether the benefits of Rust, particularly its memory safety features, outweigh the challenges of integrating a new language into the existing codebase.

Arguments in Favor of Rust Integration

Enhanced Memory Safety: Proponents argue that Rust’s memory safety features can help prevent numerous errors and security vulnerabilities that are common in C and C++ code. This is particularly crucial in a large and complex codebase like the Linux kernel, where even skilled programmers can make mistakes. Google’s data suggests that replacing C and C++ with Rust in existing codebases can reduce the number of high-severity vulnerabilities.

Attracting New Developers: The integration of Rust could attract new developers who are more familiar with modern languages. The complexity and difficulty of using C can deter potential contributors, and Rust offers a more accessible alternative. This was one of the reasons Linux creator Linus Torvalds approved the inclusion of Rust in the kernel.

Arguments Against Rust Integration

Resistance from Kernel Developers: Many long-time kernel developers are reluctant to learn a new language, especially when they don’t see a clear need for it. They prefer to spend their time learning more about the kernel rather than a new way to perform tasks they already know how to do. This resistance has manifested in hostile and unprofessional behavior towards those advocating for Rust in the kernel, such as Filho.

Challenges in Maintaining Compatibility: Ensuring that changes to C code do not break Rust code, and vice versa, is a significant challenge. This is particularly problematic in the absence of comprehensive automated testing in the kernel.

Concerns Over Rust’s Maturity: Some kernel developers worry that Rust is not yet mature enough for a project as critical as the Linux kernel. They fear that the language and its tools are still rapidly evolving, and reliance on them could lead to instability and unforeseen issues.

Community Reaction

The Linux community has been deeply divided over the issue, with passionate discussions taking place on platforms like Reddit. Some users have expressed support for Rust’s integration, citing its potential benefits, while others have echoed the concerns of the kernel developers.

One Reddit user who watched Filho’s speech at the 2024 Linux Kernel Summit and other related videos commented that the kernel developers appeared to be mocking the speakers on the spot. This behavior has fueled the perception that the community is divided, with some members being openly hostile to change.

Conclusion

The resignation of Wedson Almeida Filho from the Rust for Linux project has brought to the forefront the ongoing debate about integrating Rust into the Linux kernel. The outcome of this debate will likely have significant implications for the future of Linux and the broader open-source ecosystem. As the community grapples with these issues, finding a balance between stability and innovation will be crucial for the continued success of the Linux kernel.


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