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What is a sleeping spin locks?

To: "kernelnewbies@xxxxxxxxxxxx" <kernelnewbies@xxxxxxxxxxxx>
Subject: What is a sleeping spin locks?
From: "Peter Teoh" <htmldeveloper@xxxxxxxxx>
Date: Mon, 4 Aug 2008 23:36:14 +0800
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I read about this sleeping spin lock:

http://lwn.net/Articles/271817/

What is that?   I don't quite understand.   Normal spin lock is
poll-based, but sleeping spin lock is not, then how does it differed
from mutex then?

Thank you for the answer :-).

-- 
Regards,
Peter Teoh

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