Date: Wed, 01 Aug 2012 21:13:46 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Konstantin Belousov <kostikbel@gmail.com> Cc: Ed Schouten <ed@80386.nl>, current@freebsd.org, hselasky@freebsd.org Subject: Re: ttydev_cdevsw has no d_purge Message-ID: <76407.1343855626@critter.freebsd.dk> In-Reply-To: Your message of "Thu, 02 Aug 2012 00:02:10 %2B0300." <20120801210210.GU2676@deviant.kiev.zoral.com.ua>
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In message <20120801210210.GU2676@deviant.kiev.zoral.com.ua>, Konstantin Belous ov writes: >> I guess d_purge was added quite recently, right? > >No, it was there at least in 2006. In fact, it seems to be added in 2004, >see r135843. Ahh yes, I remember that one :-) It was added so that when PCMCIA cards (anyone remember those ?) were pulled out, ppp(8) and tip(1) would not stay stuck forever. Today all devices drivers should assume that the hardware can disappear under their feet. -- 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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