for_each_free_mem_range_reverse  567 kernel/kexec_file.c 		for_each_free_mem_range_reverse(i, NUMA_NO_NODE, MEMBLOCK_NONE,
for_each_free_mem_range_reverse  232 mm/memblock.c  	for_each_free_mem_range_reverse(i, nid, flags, &this_start, &this_end,