From: Nick Piggin <[email protected]>
Subject: Re: [patch 2] mm: speculative get_page
Date: Tue, 28 Jun 2005 14:50:31 +1000
> William Lee Irwin III wrote:
>
> >On Tue, Jun 28, 2005 at 11:42:16AM +1000, Nick Piggin wrote:
> >
> >spin_unlock() does not imply a memory barrier.
> >
>
> Intriguing...
BTW, I disagree with this assertion. spin_unlock() does imply a
memory barrier.
All memory operations before the release of the lock must execute
before the lock release memory operation is globally visible.
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