Date: Tue, 14 Mar 2017 09:17:48 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Manuel =?iso-8859-1?Q?St=FChn?= <freebsdnewbie@freenet.de> Cc: freebsd-hackers@freebsd.org Subject: Re: mmap device-drivers Message-ID: <35578.1489483068@critter.freebsd.dk> In-Reply-To: <20170314090905.GA94880@freebsd-t420.fritz.box> References: <20170314090905.GA94880@freebsd-t420.fritz.box>
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-------- In message <20170314090905.GA94880@freebsd-t420.fritz.box>, Manuel =3D?iso= -8859-1 ?Q?St=3DFChn?=3D writes: >is it possible for a device driver to keep track if there are still >active mmap() pointers pointing to that device? I looked at this back in PCMCIA days and it was not possible, and my attempts to implement it did not succeed. -- = Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe = Never attribute to malice what can adequately be explained by incompetence= .
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