Date: Mon, 03 Apr 2000 22:33:41 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Bruce Evans <bde@zeta.org.au> Cc: "Justin T. Gibbs" <gibbs@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/kern kern_mib.c vfs_bio.c src/sys/sys buf.h Message-ID: <23424.954794021@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 04 Apr 2000 06:12:50 %2B1000." <Pine.BSF.4.21.0004040545020.977-100000@alphplex.bde.org>
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In message <Pine.BSF.4.21.0004040545020.977-100000@alphplex.bde.org>, Bruce Eva
ns writes:
>The disk layer already handles special sector sizes without adding much
>overhead to the usual case. I hope it can do something similar for
>b_offset. E.g., only one of { b_blkno, b_offset } needs to be valid.
>Theat one could be maintained by all layers and the other one ignored
>by all layers.
Let me see if I read you right:
a 64bit byte offset in bio->bio_offset
no bio->bio_*blkno fields
we retain buf->b_blkno
is that it ?
--
Poul-Henning Kamp FreeBSD coreteam member
phk@FreeBSD.ORG "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!
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