Re: [PATCH RFC tip/core/rcu 7/7] rcu: Quiet RCU-lockdep warningsinvolving interrupt disabling

[Peter Zijlstra]

On Tue, 2011-12-06 at 09:26 +0800, Yong Zhang wrote:

> Yeah, because we call might_sleep() in rt_mutex_lock() unconditionally.
> But in this case the 'BUG: sleeping function called from invalid context
> at *' is obviously false positive.

Why can't this mutex acquisition not block?

> Maybe we could teach might_sleep() about this special case?

Sounds horrid.
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