Worked on the geerlingguy/linux repository to improve kernel stability by addressing a memory leak in the JFS subsystem. Focused on the dbAllocCtl function within jfs_dmap.c, the developer implemented proper reference counting for metapages and ensured release_metapage() was called when specific conditions were met, preventing premature exit leaks. This change enhanced runtime reliability, particularly under high-load scenarios, by reducing the risk of memory leaks. The work involved targeted testing and thorough code review to validate the fix. Utilized C for kernel development, with a strong emphasis on bug fixing and memory management to improve maintainability and traceability.