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SubjectRe: 2.6.11-rc1-mm1

Christoph Hellwig wrote:
> the lockless mode is really just loops around cmpxchg. It's spinlocks
> reinvented poorly.

I beg to differ. You have to use different spinlocks depending on
where you are:
- serving user-space
- bh-derivatives
- irq

lockless is the same primitive regardless of your current state,
it's not the same as spinlocks.

Karim
--
Author, Speaker, Developer, Consultant
Pushing Embedded and Real-Time Linux Systems Beyond the Limits
http://www.opersys.com || karim@opersys.com || 1-866-677-4546
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