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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!spool.mu.edu!uwm.edu!newsfeeds.sol.net!feed1.news.erols.com!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!newsfeed.nacamar.de!news-xfer.cybernet.dk!news.onramp.net!news-in.iadfw.net!news.gymnet.com!LSNT1!lsbsdi6.lightspeed.net!news-ana-7.sprintlink.net!news-ana-24.sprintlink.net!news-west.sprintlink.net!news-peer.sprintlink.net!news.sprintlink.net!Sprint!howland.erols.net!newsfeed.internetmci.com!rill.news.pipex.net !pipex!tank.news.pipex.net!pipex!news.utell.co.uk!usenet From: brian@shift.utell.net (Brian Somers) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: mmap() incapable of mapping block special files Date: 2 Jun 1997 14:56:31 GMT Organization: Awfulhak Ltd. Lines: 25 Message-ID: <5BDDB0BA53BABB8C.052434BF8427303C.FE4F81F1EEF5445B@library-proxy.airnews.net> X-Orig-Message-ID: <5mumuv$37m@ui-gate.utell.co.uk> References: <ytlraemlumg.fsf@mr.net> <Pine.BSF.3.95.970601211328.23344A-100000@current1.whistle.com> Reply-To: brian@awfulhak.org, brian@utell.co.uk NNTP-Proxy-Relay: library.airnews.net NNTP-Posting-Host: biceps.gymnet.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Newsreader: knews 0.9.8 Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:42375 In article <Pine.BSF.3.95.970601211328.23344A-100000@current1.whistle.com>, Julian Elischer <julian@current1.whistle.com> writes: > I think you should ask this question on 'hackers' > I think that it is relevant there.. > > here is unlikely to get read by the right people.. > > I'm not sure if BDEVs can handle that.. > I would doubt it but it MIGHT work.. I doubt it. If you think about what mmap does, it sort of makes its target into a block device..... Wouldn't mmap'ing a bdev put each page in a buffer twice ? Why would anyone want to do this anyway (apart from "because you should be able to abstract things to that level") ? > julian > -- Brian <brian@awfulhak.org> <brian@freebsd.org> <http://www.awfulhak.org> Don't _EVER_ lose your sense of humour !