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Date: Sun, 10 Nov 2002 13:56:14 -0500
From: Jake Burkholder <jake@locore.ca>
To: Matt Jacob <mjacob@FreeBSD.org>
Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/vm uma_dbg.c
Message-ID: <20021110135614.A85338@locore.ca>
References: <200211101616.gAAGGiuV009632@repoman.freebsd.org>
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In-Reply-To: <200211101616.gAAGGiuV009632@repoman.freebsd.org>; from mjacob@FreeBSD.org on Sun, Nov 10, 2002 at 08:16:44AM -0800
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Apparently, On Sun, Nov 10, 2002 at 08:16:44AM -0800,
	Matt Jacob said words to the effect of;

> mjacob      2002/11/10 08:16:44 PST
> 
>   Modified files:
>     sys/vm               uma_dbg.c 
>   Log:
>   Use atomic_set_8 on the us_freelist maps as they are not otherwise
>   protected. Furthermore, in some RISC architectures with no normal
>   byte operations, the surrounding 3 bytes are also affected by the
>   read-modify-write that has to occur.
>   
>   Revision  Changes    Path
>   1.9       +2 -2      src/sys/vm/uma_dbg.c

sparc64 can't do atomic operations on less than 32 bits, this needs
a lock.

Jake

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