On Fri, 2010-05-07 at 22:03 +0100, Matthew Garrett wrote:
To me it's somewhat of a negative for suspend blockers. Since to solve
the problem you give above you would have to use a suspend blocker in an
asynchronous way (locked in an interrupt, released in a thread too)
assuming I understand your example. I've had my share of semaphore
nightmares, and I'm not too excited to see a protection scheme (i.e. a
lock) which allows asynchronous usage like suspend blockers.