Resource-Demand Garbage Collection Scheduling

This policy performs garbage collection when the amount of some resource falls below (or grows above) some limit. Some example policies:

• Collect garbage when the amount of free space on the physical filesystem where fakefs resides falls below some threshold.

• Collect garbage when the amount of space occupied by fakefs on the physical filesystem where fakefs resides grows above some threshold.

This policy is supported by invoking the garbage collector whenever fakefs has to consume disk space.