From owner-cvs-all Tue Feb 6 9: 5: 5 2001 Delivered-To: cvs-all@freebsd.org Received: from mobile.wemm.org (c1315225-a.plstn1.sfba.home.com [65.0.135.147]) by hub.freebsd.org (Postfix) with ESMTP id 44D3037B6A2; Tue, 6 Feb 2001 09:04:40 -0800 (PST) Received: from netplex.com.au (localhost [127.0.0.1]) by mobile.wemm.org (8.11.1/8.11.1) with ESMTP id f16H4ct48889; Tue, 6 Feb 2001 09:04:38 -0800 (PST) (envelope-from peter@netplex.com.au) Message-Id: <200102061704.f16H4ct48889@mobile.wemm.org> X-Mailer: exmh version 2.2 06/23/2000 with nmh-1.0.4 To: Garrett Wollman Cc: 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 ... In-Reply-To: <200102061643.LAA32336@khavrinen.lcs.mit.edu> Date: Tue, 06 Feb 2001 09:04:38 -0800 From: Peter Wemm Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Garrett Wollman wrote: > < 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. Do you know where we can get one? For completeness we should have it and it is missing from our queue.h. It could probably be a simple enough variant of the recently added TAILQ_PREV() macro - which still gives me a headache trying to understand. :-) > -GAWollman > > Cheers, -Peter -- Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message