calc_vm_prot_bits  967 mm/mmap.c      	vm_flags = calc_vm_prot_bits(prot) | calc_vm_flag_bits(flags) |
calc_vm_prot_bits  251 mm/mprotect.c  	vm_flags = calc_vm_prot_bits(prot);
calc_vm_prot_bits  746 mm/nommu.c     	vm_flags = calc_vm_prot_bits(prot) | calc_vm_flag_bits(flags);