All symbols starting with `f' in ufs/lfs

• fi_blocks ufs/lfs/lfs.h:79
• file ufs/lfs/todo:6
• filesystem ufs/lfs/todo:21
• FINFO ufs/lfs/lfs.h:73
• flushed ufs/lfs/todo:32
• flush_invoked ufs/lfs/lfs.h:349
• fsbtodb ufs/lfs/lfs.h:233