lib/58729: container_of is not documented or available in userland

[campbell+netbsd%mumble.net@localhost]

>Number:         58729
>Category:       lib
>Synopsis:       container_of is not documented or available in userland
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 08 13:50:00 +0000 2024
>Originator:     Taylor R Campbell
>Release:        current, 10, 9, ...
>Organization:
The Struct &NetBSD->foundation
>Environment:
>Description:
1. container_of is missing a man page
2. container_of is defined in libkern.h, not, say, sys/container_of.h, so it isn't available in userland
>How-To-Repeat:
discussion on tech-userlevel
>Fix:
Yes, please!