NSWAPDEV limit.
- Don't warn about devices that are not in use in 'swapoff -a'.
- Re-add behavior mistakenly removed in revision 1.44:
If using 'swapon -a', do not warn if the device is already in use.
PR: 46633
Submitted by: Andy Farkas <andyf@speednet.com.au> (in part)
Reviewed by: mike (mentor)
swapctl functionality. The idea is to create a swapctl command that is
fairly close to the OpenBSD and NetBSD version. FreeBSD does not implement
swap priority (and it would be a mistake if we did) so we didn't bother with
that part of it.
Submitted by: Eirik Nygaard <eirikn@bluezone.no>
Augmented by: dillon (extensively)
Reviewed by: David Schultz <dschultz@uclink.Berkeley.EDU>
It does not help modern compilers, and some may take some hit from it.
(I also found several functions that listed *every* of its 10 local vars with
"register" -- just how many free registers do people think machines have?)