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Re: 4.x -> 5.x locking?

To: tech-kern%netbsd.org@localhost
Subject: Re: 4.x -> 5.x locking?
From: Joerg Sonnenberger <joerg%britannica.bec.de@localhost>
Date: Wed, 9 Nov 2011 14:36:33 +0100

On Wed, Nov 09, 2011 at 02:40:19AM -0500, Mouse wrote:
>       membar_sync();
>       mutex_exit(mtx);

mutex_enter and mutex_exit are implicit memory barriers (reads and
writes respectively are not allowed to be reordered).

Joerg

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