From owner-freebsd-hackers  Tue Mar 26 14:31:14 2002
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Date: Tue, 26 Mar 2002 14:31:03 -0800
From: Alfred Perlstein <bright@mu.org>
To: Andrew <andrew@ugh.net.au>
Cc: Terry Lambert <tlambert2@mindspring.com>,
	Dan Nelson <dnelson@allantgroup.com>,
	Volker Stolz <stolz@hyperion.informatik.rwth-aachen.de>,
	Ian <freebsd@damnhippie.dyndns.org>, hackers@FreeBSD.ORG
Subject: Re: idprio
Message-ID: <20020326223103.GC93885@elvis.mu.org>
References: <3CA0D3FE.8113515C@mindspring.com> <20020327092520.V24232-100000@starbug.ugh.net.au>
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* Andrew <andrew@ugh.net.au> [020326 14:27] wrote:
> 
> 
> On Tue, 26 Mar 2002, Terry Lambert wrote:
> 
> > > Sure it can, if the idprio process has locked a vnode trying to update
> 
> But if system calls aren't preempted under what circumstances can a
> process hold a vnode lock and then be usurped for processor?

While sleeping for IO.

-Alfred

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