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Subject: Re: [PATCH] break_lock forever broken
From: Arjan van de Ven <arjan@infradead.org>
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Date: Sun, 13 Mar 2005 09:23:14 +0100
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> 							\
> +	if ((lock)->break_lock)						\
> +		(lock)->break_lock = 0;					\
>  }									\
if it really worth an conditional there? the cacheline of the lock is
made dirty anyway on unlock, so writing an extra 0 is like almost free
(maybe half a cycle) while a conditional jump can be 100+....