Date: Tue, 22 Dec 1998 16:16:49 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: David Greenman <dg@root.com> Cc: hackers@FreeBSD.ORG Subject: Re: vfs_bio / struct buf Message-ID: <199812230016.QAA08122@apollo.backplane.com>
index | next in thread | raw e-mail
:> It is also glaringly obvious that there are some hacks in there that
:> we should probably work to remove. We ought to be able to fix NFS
:> to not have to use the validoff/validend/dirtyoff/dirtyend junk, and
:> we ought to be able to clean the system up such that it is possible
:> to get rid of the bogus_page stuff and we should also be able to fix
:> the bogus way pages are marked clean in the VFS layer ( rather then being
:> marked clean in the device layer ). I may take this up post-3.0.1.
:
: valid/dirty off/end are there to reduce wire traffic, but aren't strictly
:necessary. We would not want to remove it.
:
:-DG
Right. I don't see how they reduce the wire traffic, though, since
the page dirty and valid bits are already available with a DEV_BSIZE
(i.e. 512 byte) granularity. Can't we just use the valid/dirty bits
to optimize NFS operations?
-Matt
:David Greenman
:Co-founder/Principal Architect, The FreeBSD Project
:
Matthew Dillon Engineering, HiWay Technologies, Inc. & BEST Internet
Communications & God knows what else.
<dillon@backplane.com> (Please include original email in any response)
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199812230016.QAA08122>