"Some patches make it into the kernel in something very close to
their original form. Others have to go through a few changes first.
The all-time record for development iterations may be held by
devfs; Richard Gooch had just released the 157th revision when this
ill-fated subsystem was merged for 2.3.46. On that scale, Evgeniy
Polyakov is just getting started with kevent take 26; even so, the
process must be starting to seem like a long one.
"In this case, however, the long process can be seen as evidence
that the system is working as it should. The kevent subsystem is a
major addition to the Linux system call API..."