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Date: Wed, 01 Oct 2003 15:08:47 -0600 (MDT)
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To: jhb@FreeBSD.org
From: "M. Warner Losh" <imp@bsdimp.com>
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Subject: Re: cvs commit: src/share/man/man9 timeout.9
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In message: <XFMail.20031001153606.jhb@FreeBSD.org>
            John Baldwin <jhb@FreeBSD.org> writes:
: 
: On 01-Oct-2003 Warner Losh wrote:
: > imp         2003/09/30 22:48:48 PDT
: > 
: >   FreeBSD src repository
: > 
: >   Modified files:
: >     share/man/man9       timeout.9 
: >   Log:
: >   Document the implications of the callout_stop() returning 0 if the
: >   callout has finished or is in progress.  Also document that the
: >   locking of the callout code for FreeBSD 5 has eliminated the 'or is in
: >   progress' clause as a possibility and that such elimination is an
: >   accident of the implementation and shouldn't be relied upon.
: 
: It has?  I had to work around the callot_stop() race with msleep()
: and endtsleep() to fix panics.

Actually it hasn't.  I was wrong.  Bruce pointed out to me how I was
wrong.  I'll fix the docs.

Warner