From owner-freebsd-current Tue Feb 23 11:32:32 1999 Delivered-To: freebsd-current@freebsd.org Received: from iquest3.iquest.net (iquest3.iquest.net [209.43.20.203]) by hub.freebsd.org (Postfix) with SMTP id A28251120C for ; Tue, 23 Feb 1999 11:32:30 -0800 (PST) (envelope-from toor@y.dyson.net) Received: (qmail 25493 invoked from network); 23 Feb 1999 19:32:27 -0000 Received: from dyson.iquest.net (HELO y.dyson.net) (198.70.144.127) by iquest3.iquest.net with SMTP; 23 Feb 1999 19:32:27 -0000 Received: (from toor@localhost) by y.dyson.net (8.9.1/8.9.1) id OAA04081; Tue, 23 Feb 1999 14:32:25 -0500 (EST) Message-Id: <199902231932.OAA04081@y.dyson.net> Subject: Re: Filesystem deadlock In-Reply-To: <199902231625.LAA09126@lor.watermarkgroup.com> from Luoqi Chen at "Feb 23, 99 11:25:53 am" To: luoqi@watermarkgroup.com (Luoqi Chen) Date: Tue, 23 Feb 1999 14:32:25 -0500 (EST) Cc: dyson@iquest.net, luoqi@watermarkgroup.com, freebsd-current@FreeBSD.ORG, green@unixhelp.org, kan@sti.cz From: "John S. Dyson" Reply-To: dyson@iquest.net X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Luoqi Chen said: > > > Do you still have that piece of code? Does it handle the case involves more > than one process? For example, process 1 mmaps file B and reads file A into > the mmapped region, while process 2 mmaps file A and reads file B, this could > also result in a deadlock. > It used to be part of the tree, but I seem to remember that it was removed (by those who understand the code :-)) soon after I left. I will look for it, and see if it would help with the problem(s). -- John | Never try to teach a pig to sing, dyson@iquest.net | it makes one look stupid jdyson@nc.com | and it irritates the pig. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message