Messages in this thread | | | Date | Mon, 15 Dec 2003 15:04:48 -0800 | From | Roland McGrath <> | Subject | Re: [patch] Re: Problem with exiting threads under NPTL |
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> On Sun, 14 Dec 2003, Ingo Molnar wrote: > > > > are you sure this can happen? eligible_child() does this: > > Interesting. That code should have been enough, but we've later on added > extra code into wait_task_zombie to check _exactly_ the same case because > we saw problems. > > Hmm.. Maybe that was to protect against concurrent wait4()'ers (which can > happen - the wait case only takes the read lock). Threads can wait for > each others children, after all.
My recollection about the wait_task_* changes was that they were mostly to address races between concurrent wait4 calls. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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