sleep/wakeup sequence using tsleep_interlock

Simon 'corecode' Schubert corecode at fs.ei.tum.de
Sun Aug 19 01:10:23 PDT 2007


Aggelos Economopoulos wrote:
 *	(enter critical section)
 *	(acquire upper level lock)
 *	tsleep_interlock(blah)
 *	(release upper level lock)
 *	tsleep(blah, ...)
 *	(exit critical section)
It is not obvious to me why the first two operations can't be reversed (i.e. 
first acquire lock, then enter critical section). Can they?
Yes, they can :)

cheers
 simon
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