/tmp mounting options as tmpfs: Compatibility & Security

Having a SSD - it is recommended to mount /tmp as tmpfs. Examples: - https://askubuntu.com/questions/550589/best-way-to-mount-tmp-in-fstab - https://yktoo.com/en/blog/post/233 - https://askubuntu.com/questions/173094/how-can-i-use-ram-storage-for-the-tmp-directory-and-how-to-set-a-maximum-amount The mounting options are different in each example - why??? The default Ubuntu 16 installation sets the mounting options for root (/) as (from /etc/mtab): /dev/sda1 / ext4 rw,relatime,errors=remount-ro,data=ordered 0 0 Ergo all other options - as suggested in the examples/links - shouldn't be applied. Some of the mounting options in the various examples on the web are: defaults,noatime,mode=1777 or: defaults,noatime,nosuid,nodev,noexec,mode=1777,size=512M But: - Having noatime feels useless because that the data is stored in RAM which is fast anyway. - Why nosuid,nodev,noexec ? How do they know whether softwares are dependent on certain options or not? --- I think it is best to stick with the default permissions that the installation applied, meaning: rw,relatime,mode=1777,uid=0,gid=0 In order to ensure proper operation of various softwares: - The permissions are 1777 because that the default permissions for /tmp are also drwxrwxrwt (see stat -c "%a %n" /tmp). - The uid and gid are root because that /tmp has the same. Is there something which I'm missing here?