From owner-freebsd-fs@FreeBSD.ORG Sat Apr 12 02:12:16 2003 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DD2E037B401; Sat, 12 Apr 2003 02:12:16 -0700 (PDT) Received: from dire.bris.ac.uk (dire.bris.ac.uk [137.222.10.60]) by mx1.FreeBSD.org (Postfix) with ESMTP id DF03D43FB1; Sat, 12 Apr 2003 02:12:15 -0700 (PDT) (envelope-from Jan.Grant@bristol.ac.uk) Received: from mail.ilrt.bris.ac.uk by dire.bris.ac.uk with SMTP-PRIV with ESMTP; Sat, 12 Apr 2003 10:07:40 +0100 Received: from cmjg (helo=localhost) by mail.ilrt.bris.ac.uk with local-esmtp (Exim 3.16 #1) id 194Gwq-00030X-00; Sat, 12 Apr 2003 10:05:20 +0100 Date: Sat, 12 Apr 2003 10:05:20 +0100 (BST) From: Jan Grant X-X-Sender: cmjg@mail.ilrt.bris.ac.uk To: Marko Zec In-Reply-To: <3E976EBD.C3E66EF8@tel.fer.hr> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: Jan Grant cc: freebsd-fs@freebsd.org cc: mckusick cc: freebsd-stable Subject: Re: PATCH: Forcible delaying of UFS (soft)updates X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Apr 2003 09:12:17 -0000 On Sat, 12 Apr 2003, Marko Zec wrote: > When enabled, the extended delaying policy introduces some additional > changes: > > - fsync() no longer flushes the buffers to disk, but returns immediately > instead; This is bad; the rest looks very interesting. -- jan grant, ILRT, University of Bristol. http://www.ilrt.bris.ac.uk/ Tel +44(0)117 9287088 Fax +44 (0)117 9287112 http://ioctl.org/jan/ Rereleasing dolphins into the wild since 1998.