Vast Memory Leakage

[anvart]

I just run MemoryFS from examples, it mounts and it works, shows all the sample files, and the process weights only 19MB, but after uploading just one 6MB file the size of the becomes 190MB. After uploading more files (few more MB) it grows even bigger and eats all the RAM.
Tested on Debian 7, Debian 8, latest LinuxMint, Ubuntu 14.04 with standard fuse lib.
No changes in the original code were made.
Is this a known issue?
Thank you.