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From: David Howells <dhowells@redhat.com>
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References: <4ACAEB6D.2020601@redhat.com> <20091005063919.3958.65581.sendpatchset@localhost.localdomain> <22214.1254748402@redhat.com>
To: Amerigo Wang <amwang@redhat.com>
Cc: dhowells@redhat.com, linux-kernel@vger.kernel.org,
       Brian Behlendorf <behlendorf1@llnl.gov>,
       Ben Woodard <bwoodard@llnl.gov>, Stable Team <stable@kernel.org>,
       akpm@linux-foundation.org
Subject: Re: [Patch v2] rwsem: fix rwsem_is_locked() bugs
Date: Tue, 06 Oct 2009 08:18:09 +0100
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Amerigo Wang <amwang@redhat.com> wrote:

> Since if we have locks, we don't need memory barriers any more, right?

Indeed - locks are implicit memory barriers.

David