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Message-ID: <46128CC2.9090809@redhat.com>
Date: Tue, 03 Apr 2007 10:20:02 -0700
From: Ulrich Drepper <drepper@redhat.com>
Organization: Red Hat, Inc.
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To: Andi Kleen <andi@firstfloor.org>
CC: Rik van Riel <riel@redhat.com>, Andrew Morton <akpm@linux-foundation.org>,
       Linux Kernel <linux-kernel@vger.kernel.org>,
       Jakub Jelinek <jakub@redhat.com>
Subject: Re: missing madvise functionality
References: <46128051.9000609@redhat.com> <p73648dz5oa.fsf@bingen.suse.de>
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Andi Kleen wrote:
> Why do you need a lock for that? I don't see any problem with
> two threads doing that in parallel. The kernel would
> serialize it internally and one would fail, but that shouldn't
> be a problem.=20

There is no lock at all at userlevel.  I'm talking about locks in the
kernel.

--=20
=E2=9E=A7 Ulrich Drepper =E2=9E=A7 Red Hat, Inc. =E2=9E=A7 444 Castro St =
=E2=9E=A7 Mountain View, CA =E2=9D=96


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