if (match_octal(&args[0], &option))
                                return 0;
                        *mode = option & 0777;
-                       *mount_opts |= AFFS_MOUNT_SF_SETMODE;
+                       affs_set_opt(*mount_opts, SF_SETMODE);
                        break;
                case Opt_mufs:
-                       *mount_opts |= AFFS_MOUNT_SF_MUFS;
+                       affs_set_opt(*mount_opts, SF_MUFS);
                        break;
                case Opt_notruncate:
-                       *mount_opts |= AFFS_MOUNT_SF_NO_TRUNCATE;
+                       affs_set_opt(*mount_opts, SF_NO_TRUNCATE);
                        break;
                case Opt_prefix:
                        *prefix = match_strdup(&args[0]);
                        if (!*prefix)
                                return 0;
-                       *mount_opts |= AFFS_MOUNT_SF_PREFIX;
+                       affs_set_opt(*mount_opts, SF_PREFIX);
                        break;
                case Opt_protect:
-                       *mount_opts |= AFFS_MOUNT_SF_IMMUTABLE;
+                       affs_set_opt(*mount_opts, SF_IMMUTABLE);
                        break;
                case Opt_reserved:
                        if (match_int(&args[0], reserved))
                        *gid = make_kgid(current_user_ns(), option);
                        if (!gid_valid(*gid))
                                return 0;
-                       *mount_opts |= AFFS_MOUNT_SF_SETGID;
+                       affs_set_opt(*mount_opts, SF_SETGID);
                        break;
                case Opt_setuid:
                        if (match_int(&args[0], &option))
                        *uid = make_kuid(current_user_ns(), option);
                        if (!uid_valid(*uid))
                                return 0;
-                       *mount_opts |= AFFS_MOUNT_SF_SETUID;
+                       affs_set_opt(*mount_opts, SF_SETUID);
                        break;
                case Opt_verbose:
-                       *mount_opts |= AFFS_MOUNT_SF_VERBOSE;
+                       affs_set_opt(*mount_opts, SF_VERBOSE);
                        break;
                case Opt_volume: {
                        char *vol = match_strdup(&args[0]);
        case MUFS_FS:
        case MUFS_INTLFFS:
        case MUFS_DCFFS:
-               sbi->s_flags |= AFFS_MOUNT_SF_MUFS;
+               affs_set_opt(sbi->s_flags, SF_MUFS);
                /* fall thru */
        case FS_INTLFFS:
        case FS_DCFFS:
-               sbi->s_flags |= AFFS_MOUNT_SF_INTL;
+               affs_set_opt(sbi->s_flags, SF_INTL);
                break;
        case MUFS_FFS:
-               sbi->s_flags |= AFFS_MOUNT_SF_MUFS;
+               affs_set_opt(sbi->s_flags, SF_MUFS);
                break;
        case FS_FFS:
                break;
        case MUFS_OFS:
-               sbi->s_flags |= AFFS_MOUNT_SF_MUFS;
+               affs_set_opt(sbi->s_flags, SF_MUFS);
                /* fall thru */
        case FS_OFS:
-               sbi->s_flags |= AFFS_MOUNT_SF_OFS;
+               affs_set_opt(sbi->s_flags, SF_OFS);
                sb->s_flags |= MS_NOEXEC;
                break;
        case MUFS_DCOFS:
        case MUFS_INTLOFS:
-               sbi->s_flags |= AFFS_MOUNT_SF_MUFS;
+               affs_set_opt(sbi->s_flags, SF_MUFS);
        case FS_DCOFS:
        case FS_INTLOFS:
-               sbi->s_flags |= AFFS_MOUNT_SF_INTL | AFFS_MOUNT_SF_OFS;
+               affs_set_opt(sbi->s_flags, SF_INTL);
+               affs_set_opt(sbi->s_flags, SF_OFS);
                sb->s_flags |= MS_NOEXEC;
                break;
        default: