Worked on stabilizing the OCFS2 filesystem by addressing a recursive semaphore deadlock encountered during fiemap operations. Focused on kernel development and filesystem design, the solution involved a targeted patch in the geerlingguy/linux repository to prevent hangs when handling mmap-related workloads. Using C programming, the developer analyzed the concurrency issue and implemented a fix that enhances reliability for production environments relying on OCFS2. The work included clear documentation and commit messaging, ensuring maintainability and transparency for future contributors. This contribution improved the robustness of mmap and fiemap interactions, reducing the risk of downtime and supporting stable filesystem performance.