Date: Wed, 10 Feb 1999 16:54:49 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: dcs@newsguy.com (Daniel C. Sobral) Cc: mjacob@feral.com, eivind@FreeBSD.ORG, freebsd-alpha@FreeBSD.ORG Subject: Re: nullfs works? Message-ID: <199902101654.JAA10995@usr07.primenet.com> In-Reply-To: <36C1651C.477A3D8@newsguy.com> from "Daniel C. Sobral" at Feb 10, 99 07:53:16 pm
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> > Bill Studenmund in NetBSD is doing major surgery wrt locking and NullFS. > > Maybe you'd like to coordinate with him? > > Did they adopt out vm interface? :-) No. And that's absolutely the wrong frigging direction to go, anyway. The NULLFS should have no knowledge of the VM interface, whatsoever. All FS consumption of I/O interfaces, be they bmap or unified VM page based I/O, should be macrotized so as to be independent of th VM implementation technology. For FreeBSD, this means that the BMAP stubs should be left there, but as macros that expand to nothing on FreeBSD. Anything else shoots FS portability between OS's in the head, and if you do that, then what's the frigging point of having well defined interfaces to what is, in effect, a technological cul de sac? Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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