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To: David Dawes <dawes@rf900.physics.usyd.edu.au>
cc: sos@FreeBSD.org, dyson@FreeBSD.org, current@FreeBSD.org, mmead@Glock.COM
Subject: Re: Try this vm_mmap.c -- please 
In-reply-to: Your message of "Sat, 16 Mar 1996 21:07:31 +1100."
             <199603161007.VAA09725@rf900.physics.usyd.edu.au> 
Date: Sat, 16 Mar 1996 04:36:29 -0800
Message-ID: <244.826979789@time.cdrom.com>
From: "Jordan K. Hubbard" <jkh@time.cdrom.com>
Sender: owner-current@FreeBSD.org
X-Loop: FreeBSD.org
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> Does accelx by any chance use MAP_PRIVATE?

Bingo!

Between David's comment here and John's own comment in the latest
vm_mmap.c he sent out which says:

	 * On device mmaps we default to map shared -- makes the most
	 * sense in this case.  Does MAP_PRIVATE even make sense on
	 * devices mmaps???

I made the following change:

	if ((type == OBJT_DEVICE)) {
		if (flags & (MAP_PRIVATE|MAP_SHARED) == 0)
		    flags |= MAP_SHARED;
		else if (flags & MAP_PRIVATE)
		    flags &= ~MAP_PRIVATE;
	}

Which turns MAP_PRIVATE *off* for device objects.  My Xaccel 1.2 now
works perfectly!  Yay!

					Jordan