vm_init_off      1849 mm/vmalloc.c   	static size_t vm_init_off __initdata;
vm_init_off      1852 mm/vmalloc.c   	addr = ALIGN(VMALLOC_START + vm_init_off, align);
vm_init_off      1853 mm/vmalloc.c   	vm_init_off = PFN_ALIGN(addr + vm->size) - VMALLOC_START;