Messages in this thread | | | Date | Mon, 18 Dec 2000 15:58:08 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: 2.4.0-test13-pre1 lockup: run_task_queue or tty_io are wrong |
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On Mon, 18 Dec 2000, Jamie Lokier wrote: > > > > Nope. > > > > There may be multiple concurrent run_task_queue's executing, so for now > > I've applied Andrew Morton's patch that most closely gets the old > > behaviour of having a private list. > > I wasn't clear. The sentinel is a local structure on the stack, and > only exists while run_task_queue is executing. Another name for this is > "deletion-safe pointer".
Yes, except run_task_queue removes every object it finds. So two concurrent run_task_queues would be bad.
Sure, we could just make it skip sentinels by adding a magic flag to them, but that is pretty ugly.
Linus
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