Q:

How to Change Ramdisk Size without Restarting

I have the following line on my fstab file:
ramdisk /tmp tmpfs mode=1777,size=2048m

Now I want to increase the size to 4096m.
What I did is change it to:
ramdisk /tmp tmpfs mode=1777,size=4096m

and issue the command:
mount -a

but when I check it if it change using df -h, the value is still the same at 2gb.
Anyone know how to change it?

A:

Typing mount -o remount,size=4096m /tmp should do the trick.

