Variables starting with `f' in osfmk/kern

• FALSE osfmk/kern/exception.c:110
• first_k_zone osfmk/kern/kalloc.c:253
• first_rt_zone osfmk/kern/rtmalloc.c:207
• fixed_swap_start_pageout_rate osfmk/kern/task_swap.c:136
• fixed_swap_stop_pageout_rate osfmk/kern/task_swap.c:137
• fract osfmk/kern/mach_factor.c:83