Date: Sun, 14 Mar 2004 16:19:07 +0100 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Bruce Evans <bde@zeta.org.au> Cc: current@freebsd.org Subject: Re: recent changes in Giant usage -> panic Message-ID: <78488.1079277547@critter.freebsd.dk> In-Reply-To: Your message of "Mon, 15 Mar 2004 01:52:00 %2B1100." <20040315012321.X1848@gamplex.bde.org>
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In message <20040315012321.X1848@gamplex.bde.org>, Bruce Evans writes: >vgone() has interesting locking problems. It seems to be a fundamentally >broken interface that only works if the kernel is not premptible or >possibly if everything related to vgone() is locked by Giant. Apparently >the lower levels know that Giant locking is needed. That's a fair way of putting it. Quite a bit of the brokenness comes from the revoke systemcall. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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