Linux's contemporary filesystem mount API went without documentation for six years — latest man-page package finally adds content for 2019 code

Linux's contemporary filesystem mount API lacked documentation for six years until the latest man-page package finally added content for the 2019 code. The new API introduced calls like "fsconfig," "fsmount," and "fsopen," replacing the old "mount" and offering developers cleaner code and better error handling. Despite drafts of man-pages being written in 2020, they were not merged due to potential incompleteness. Documentation master Christian Brauner created a repository with Markdown versions of the pages in 2024, making the necessary information more accessible. The delay in documentation may have contributed to filesystem handlers like Ext4, CIFS, Btrfs, and F2FS implementing the new API at different times.