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Re: poll_wait() again



Jan Hudec wrote:
> IIRC poll_wait is not a wake-up at all. It ends in add_wait_queue (I am
> looking at 2.4.19, but I don't think poll logic changed that much).
> 
> IIRC the poll logic goes as follows: sys_poll calls ->poll method on all
> descriptors. These call poll_wait to set up wait queues and then check
> the current state. If all ->poll methods return 0, sys_poll schedule()s
> and goes to call the methods again. If some return nonzero or time is
> up, it discards the queues and returns.

You're right. I've just got messed up. 8)

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