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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next] af_unix: fix a fatal race with bit fields
Date: Wed, 01 May 2013 03:36:50 -0400 (EDT)
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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Wed, 01 May 2013 11:39:53 +1000

> I'm not even completely certain bytes are safe to be honest, though
> probably more than bitfields. I'll poke our compiler people.

Older Alpha only has 32-bit and 64-bit loads and stores, so byte sized
accesses are not atomic, and therefore use racey read-modify-write
sequences.