Date: Fri, 20 Mar 1998 08:38:29 -0800 From: Mike Smith <mike@smith.net.au> To: "Alfred Perlstein" <perlsta@cs.sunyit.edu> Cc: hackers@FreeBSD.ORG Subject: Re: mremap? Message-ID: <199803201638.IAA29607@dingo.cdrom.com> In-Reply-To: Your message of "Fri, 20 Mar 1998 03:03:38 EST." <003201bd53d6$b08ed7a0$0600a8c0@win95.local.sunyit.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
> ok, i'm not promising anything here, but if i implemented mremap(), would > there be any interest in allowing it into -current? > > mremap just allows for moving and resizing mmap'd segments. You're more than welcome to give it a try. I had a look at the way Linux does it, and frankly the layering violations were pretty shocking (although there appears to be a great deal less sophistication in their VM system). I couldn't see how to provide similar functionality with FreeBSD, but if you're willing to get a little close to the way that memory mapping works (check with David Greenman if you need advice here) you should be able to pull it off. > btw, i'm planning on implementing it like the linux mremap(), although there > is some talk in the linux man page for it about a BSD version that was never > done... if anyone would rather i try to do that i can look into it if > someone can get me a man page to the BSD proposed version. If BSD/OS or NetBSD has mremap(), we would probably want to look like theirs and support the Linux model via ABI emulation. Otherwise, I can't see any reason not to simply be slavishly compatible. 8) -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199803201638.IAA29607>