You can automount filesystems on demand with systemd.
sudo su
mkdir -p /mnt/fileserver/torgeir
Add a file /etc/systemd/system/mnt-fileserver-torgeir.automount with the name of the folder you plan to mount it to, under /mnt/. This will make the filesystem automaticaly mount on demand.
cat <<EOF > /etc/systemd/system/mnt-fileserver-torgeir.automount
[Unit]
Description=Mount Share at boot
[Automount]
Where=/mnt/fileserver/torgeir
[Install]
WantedBy=multi-user.target
EOF
Add a corresponding /etc/systemd/system/mnt-fileserver-torgeir.mount that specifies what to mount, and how.
cat <<EOF > /etc/systemd/system/mnt-fileserver-torgeir.mount
[Unit]
Description=Mount cam share at boot
[Mount]
What=//fileserver/torgeir
Where=/mnt/fileserver/torgeir
Options=_netdev,uid=1000,credentials=/home/torgeir/.credentials,iocharset=utf8,rw,vers=3.0
Type=cifs
TimeoutSec=2
[Install]
WantedBy=multi-user.target
EOF
Take note of the uid and credentials that specify the permissions to use for files in the folder and how to authenticate towards //fileserver, which in this case in running samba. The mountpoint Where must match the name of the automount unit to make this work automatically. I.e. the filename /etc/systemd/system/mnt-fileserver-torgeir.mount matches the folder structure Where=/mnt/fileserver/torgeir.
Create the file to hold credentials and put your samba username and password in it
cat <<EOF > ~/.credentials
username=<username>
password=<password>
EOF
Make it accessible only by your user
chmod u=rw,go-rwx ~/.credentials
Make systemctl discover the unit files
systemctl daemon-reload
Enable and start the automount unit
systemctl enable --now mnt-fileserver-torgeir.automount
journalctl -xe
Now make use of the folder
cd /mnt/fileserver/torgeir
ls
And watch it mount!