Re: [PATCH] tty: tty_mutex: fix lockdep warning intty_lock_pair(v3)

[Peter Zijlstra]

On Sat, 2012-05-26 at 17:23 +0800, Ming Lei wrote:
> 
> You mean that the below is good usage of lock?
> 
>         LOCK A
>         LOCK B
> 
>         UNLOCK A
>         UNLOCK B 

Yep, nothing wrong with that. Its lock order that matters, unlock very
much not so.

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