'The kernel development community', 'manual'),
('filesystems/index', 'filesystems.tex', 'Linux Filesystems API',
'The kernel development community', 'manual'),
+ ('admin-guide/ext4', 'ext4-admin-guide.tex', 'ext4 Administration Guide',
+ 'ext4 Community', 'manual'),
+ ('filesystems/ext4/index', 'ext4-data-structures.tex',
+ 'ext4 Data Structures and Algorithms', 'ext4 Community', 'manual'),
('gpu/index', 'gpu.tex', 'Linux GPU Driver Developer\'s Guide',
'The kernel development community', 'manual'),
('input/index', 'linux-input.tex', 'The Linux input driver subsystem',