This is also documented in "Documentation/kernel/sysctl.c". Looking through history it seems it was added at the same time as the feature. Situations where peo

This is also documented in "Documentation/kernel/sysctl.c". Looking through history it seems it was added at the same time as the feature. Situations where people complain about "insufficient documentation" while not bothering to read it are very common and somewhat demoralizing for the people who take the time to write such explanations.