From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <ee9e417a05052313106895f47d@mail.gmail.com>
Date: Mon, 23 May 2005 16:10:28 -0400
From: Russ Cox <russcox@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] device close
In-Reply-To: <Pine.LNX.4.60.0505231426220.21782@athena>
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> In my aoe driver I'm getting closes on QIDs that were never
> opened:

You get a close call for each fid that is clunked.
Some fids are never opened.  You can test c->flag&COPEN
in aoeclose to see if the fid was an open one.

See /sys/src/9/port/devmouse.c:/^mouseclose for
a very simple ref count.

Russ