Error ENFILE never occurs on GNU/Hurd systems

Question

I was reading the GNU C Library Reference Manual and I found:

int ENFILE

“Too many open files in system.” There are too many distinct file openings in the entire system. Note that any number of linked channels count as just one file opening; see Section 13.5.1 [Linked Channels], page 354. This error never occurs on GNU/Hurd systems.

This error never occurs on GNU/Hurd systems. - Why?

Answer 1

^{As requested.}

The kernel table that records open files grows dynamically. The system runs out of memory before it runs out of open file table entries.