Macros starting with `f' in ufs

• FASTLINK ufs/inode.h:94
• fragnum ufs/fs.h:404
• fragoff ufs/fs.h:388
• fragroundup ufs/fs.h:398
• fragstoblks ufs/fs.h:400
• freespace ufs/fs.h:413
• fsbtodb ufs/fs.h:334
• fs_cs ufs/fs.h:254
• fs_postbl ufs/fs.h:240
• fs_rotbl ufs/fs.h:244