Date: Wed, 11 Dec 1996 12:27:45 -0500 (EST) From: John Dyson <dyson@dyson.iquest.net> To: jgreco@solaria.sol.net (Joe Greco) Cc: current@freebsd.org, dyson@freebsd.org Subject: Re: mlocking an mmap'ped region? Message-ID: <199612111727.MAA03619@dyson.iquest.net> In-Reply-To: <199612111636.KAA03706@solaria.sol.net> from "Joe Greco" at Dec 11, 96 10:35:59 am
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> The following does not seem to work on a 2.2-CURRENT box (built yesterday). > It does seem to work on SunOS. > > Is it just too early to be doing programming or is there really something > preventing me from doing this? > Yep, it is called broken code :-(. That problem was just brought to my attention yesterday. Unfortunately, someone also wants it fixed in 2.1.X :-(. I'll probably get it fixed in -current in the next day or so. Doing mlock the way that it is currently done is problematical from a couple of viewpoints, so I think it is going to need to be reworked. Basically, the original way of doing vm_map_pageable is wrong for userland pages. (BTW, I seem to remember that someone had found this problem a year or so ago, and it fell through the cracks.) John
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