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On Tue, 25 Jan 2000, Rik van Riel wrote: >calls __get_free_pages(). When we're (almost) out of >memory, the process will wake up kswapd and try to You'll block also before to go out of memory if the allocation rate is high enough. >In 2.2.15pre4 or when the call to try_to_free_pages() >generates disk I/O, the task will call schedule(). >Since the task state != TASK_RUNNABLE, schedule() will >immedately remove it from the run queue ... Before calling schedule() you always gets registered in a waitqueue so you can't deadlock or wait too much. If something there is the opposite problem. If you do: __set_current_state(TASK_UNINTERRUPTIBLE); get_page(GFP_KERNEL); XXXXXXXXXXXXXXXXXXXX schedule(); then at point XXXXXXX you may become a task running and you don't block anymore. Andrea - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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