how to make imideat change in file format disk of temporary of azure agent without reboot?

i tried edit in /etc/waagent.conf this lines :

ResourceDisk.MountPoint=/tempo # instead of /mnt  ResourceDisk.Format=y # isntead of n 

and even removed the line from /etc/fstab

/dev/disk/cloud/azure_resource-part1    /mnt    auto    defaults,nofail,x-systemd.requires=cloud-init.service,comment=cloudconfig       0       2 

and restart the service via

sudo service walinuxagent restart 

but stil in lsblk output is :

sdb      8:16   0    4G  0 disk └─sdb1   8:17   0    4G  0 part /mnt 

only after reboot sudo reboot lsblk shows that the mopunt has cahnged :

sdb      8:16   0    4G  0 disk └─sdb1   8:17   0    4G  0 part /tempo 

i am using ubuntu 16.04 LTS image. how can i make this mount without reboot ?