You’re going to have to provide a lot more information, before anyone can help you.
What version / distro of Linux are you running? What size disk? How much free space? Any un-partitioned space available? What file system type? Part of a logical volume?
And please try to write more clearly. Although I am providing some info to guess :
The size of the mount point (itself) does not effect how much it can hold. The size of the file system is being mounted does. For example you can mount a 1Tb fs on a mount point residing on a 40Gb hard drive.
From the look of your drive you will either have to add another drive or decrease the size of one of your other partitions. Before you can reduce the size of the partition you will have to reduce the size of the associated VolGroup.