Hello Pali,

quoted

The Linux man-pages generally try to maintain historical and 
version info (at least back as far as 2.6.0), so I applied
the patch below.

Hello Michael! That is a good idea. Anyway, these ioctls were not added
for all architectures as for some they are not needed (when version 1
already contains everything what was introduced in version 2).

I collected all details which I found and I know in this email
https://lore.kernel.org/linux-man/20210808210530.ykqrihpfmdabbdl2@pali/ (local)
and it is something which should be properly documented. But I do not
how to put these details into structured manpage...

It's not immediately obvious to me, either, how to do this.
Perhaps you eventually have some more ideas, but in the meantime,
thanks for the improvements so far.

Cheers,

Michael

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/