Implement a queue for write operations on files present on the same device.

When I copy files from disk0 to disk1, a copy nautilus file transfer window pops up.

While the above copy (write) operation is in progress, I choose to copy another file from disk0 to disk1.

This transfer also pops up in the same window, but is ran simultaneous - causing file fragmentation on disk1 and unnecesary overhead for disk0's head.

While one might argue head wear and file fragmentation are issues due to standard mechanic harddisks' design (which however still are the majority of the market for PCs and servers), slower transfer speeds can be averted by a smart queue - when the head has to jump to many locations at once, the overall transfer speed drops significantly.