Re: spin_lock forgets to clobber memory and other smp fixes [was Re: [patch] waitqueue optimization, 2.4.0-test7]

From: Linus Torvalds (torvalds@transmeta.com)
Date: Thu Sep 07 2000 - 11:53:50 EST

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On Thu, 7 Sep 2000, Jamie Lokier wrote:
>
> It's ok for the compiler to do that (given we don't know what "volatile"
> means anyway :-). But it does have implications for spin_lock:
> spin_lock must say that it clobbers memory.

Yup. We should just fix that.

Linus

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