ceph-fuse non-privileged user mount

Hi, Recently, I'm trying to mount cephfs using non-privileged users via ceph-fuse，but it‘s always fail. I looked at the code and found that there will be a remount operation when using ceph-fuse mount. Remount will execute the 'mount -i -o remount {mountpoint}' command and that causes the mount to fail. I want to ask How to use non-privileged users to mount cephfs via ceph-fuse? Thanks.