From owner-freebsd-bugs  Mon Sep 30 10:50: 6 2002
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Date: Mon, 30 Sep 2002 10:50:03 -0700 (PDT)
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To: freebsd-bugs@FreeBSD.org
Cc: 
From: Janos Mohacsi <mohacsi@niif.hu>
Subject: Re: bin/43426: mlockall and munlockall system calls are missing from
 FreeBSD
Reply-To: Janos Mohacsi <mohacsi@niif.hu>
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The following reply was made to PR bin/43426; it has been noted by GNATS.

From: Janos Mohacsi <mohacsi@niif.hu>
To: Garrett Wollman <wollman@lcs.mit.edu>
Cc: Janos Mohacsi <janos.mohacsi@bsd.hu>,
	<FreeBSD-gnats-submit@FreeBSD.ORG>
Subject: Re: bin/43426: mlockall and munlockall system calls are missing from
 FreeBSD
Date: Mon, 30 Sep 2002 19:45:24 +0200 (CEST)

 On Fri, 27 Sep 2002, Garrett Wollman wrote:
 
 > <<On Fri, 27 Sep 2002 18:18:23 +0200 (CEST), Janos Mohacsi <mohacsi@norfolk.ki.iif.hu> said:
 >
 > > 	The mlockall and munlockall system calls are missing from FreeBSD.
 > > 	The mlockall() and munlockall() functions conform to IEEE Std
 > >      	1003.1b-1993 (``POSIX''). FreeBSD should support these system calls.
 >
 > FreeBSD-stable does not define _POSIX_MEMLOCK.
 > FreeBSD-current defines _POSIX_MEMLOCK as -1.
 >
 > This indicates to applications that these features are not supported.
 >
 > > 	Try to import from NetBSD.
 >
 > FreeBSD and NetBSD have completely different virtual-memory systems.
 > The functionality would have to be rewritten from scratch.  Perhaps
 > you can interest one of the VM gurus.
 
 Yes I knew that, but I expected that mlockall() can be implemented
 with usage of mlock(), that does exist on FreeBSD.
 Unfortunately I am not an expert of the VM and I see that mlockall() on
 NetBSD is working a quite different way than mlock() on FreeBSD.
 
 What a pity!
 
 	Janos
 
 

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