Date: Tue, 06 Feb 2001 17:47:10 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> Cc: Peter Wemm <peter@netplex.com.au>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/awi awi.c src/sys/dev/ed if_ed.c src/sys/dev/fe if_fe.c src/sys/dev/ie if_ie.c src/sys/dev/lnc if_lnc.c src/sys/dev/pdq pdq_ifsubr.c src/sys/dev/ray if_ray.c src/sys/dev/sn if_sn.c src/sys/dev/snc dp83932.c src/sys/dev/usb ... Message-ID: <35414.981478030@critter> In-Reply-To: Your message of "Tue, 06 Feb 2001 11:43:32 EST." <200102061643.LAA32336@khavrinen.lcs.mit.edu>
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In message <200102061643.LAA32336@khavrinen.lcs.mit.edu>, Garrett Wollman writes: ><<On Tue, 06 Feb 2001 08:41:00 -0800, Peter Wemm <peter@netplex.com.au> said: > >> I thought LIST was doubly linked, which means we should be able to have a >> LIST_PREV(), right? SLIST is singly linked as is STAILQ. > >There is a LIST_PREV macro, but in order to traverse the entire list >backwards, one must first get to the very end, which requires a loop >in LIST and a single dereference in TAILQ. There is no LIST_PREV macro in any versions of the file I know off. See previous email to Peter why making one would be awkward. -- 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. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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