NetBSD Problem Report #52299

From www@NetBSD.org  Wed Jun 14 13:53:37 2017
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Date: Wed, 14 Jun 2017 13:53:36 +0000 (UTC)
From: n54@gmx.com
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To: gnats-bugs@NetBSD.org
Subject: MAP_NORESERVE is dead
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>Number:         52299
>Category:       kern
>Synopsis:       MAP_NORESERVE is dead
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Wed Jun 14 13:55:00 +0000 2017
>Originator:     Kamil Rytarowski
>Release:        NetBSD 8.99.1 amd64
>Organization:
TNF
>Environment:
NetBSD chieftec 8.99.1 NetBSD 8.99.1 (GENERIC) #3: Thu Jun  8 12:59:05 UTC 2017  root@chieftec:/public/netbsd-root/sys/arch/amd64/compile/GENERIC amd64
>Description:
MAP_NORESERVE from <sys/mman.h> is dead.

>How-To-Repeat:
grep -r MAP_NORESERVE /usr/src/
>Fix:
Options:

1. Remove MAP_NORESERVE (like FreeBSD)
2. Implement it, however this is explicit in modern UVM as far as I can tell.
3. Document it as a dummy compatibility flag with existing SunOS (?) software.

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