Mitigation for gvfs memory leak?

It should be solved in upcoming release of gvfs (version 1.39.90, if I understand the version scheme). The fixing commit is this.

I had the same bug but with gvfsd-google, as I use GDrive as storage for Déjà Dup Backup.

You can stop gvfsd-mtp process to avoid the memory increase:

pkill -STOP gvfsd-mtp