From owner-freebsd-current  Fri Jul 13  5: 0:32 2001
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Date: Fri, 13 Jul 2001 21:00:25 +0900
From: Seigo Tanimura <tanimura@r.dl.itc.u-tokyo.ac.jp>
To: bright@sneakerz.org
Cc: tanimura@r.dl.itc.u-tokyo.ac.jp, jake@FreeBSD.org,
	jhb@FreeBSD.org, current@FreeBSD.org
Subject: Re: Lock of struct filedesc, file, pgrp, session and sigio
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On Fri, 13 Jul 2001 19:49:25 +0900,
  Seigo Tanimura <tanimura> said:

Alfred> Certain operations, such as:
Alfred> kq = (struct kqueue *)fp->f_data;
Alfred> should not really require that the file be locked, it's implicitly frozen
Alfred> at creation time (i think)

Seigo> Yes.

Only one exception beats off everything. union_dircheck() in
fs/unionfs/union_subr.c may replace f_data with a new vnode.

-- 
Seigo Tanimura <tanimura@r.dl.itc.u-tokyo.ac.jp> <tanimura@FreeBSD.org>

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