Re: 2.6.9-rc3-mm2

[Ingo Molnar]

* Hugh Dickins <hugh@xxxxxxxxxxx> wrote:

> Yes, that _raw_read_trylock patch has fixed my zombie problem: since
> 2.6.9-rc2-mm1 my repeated kernel builds would hang after several
> hours, with a zombie (usually cc1) on one cpu and its waiting parent
> (usually gcc) on another, with the puzzle of why the parent had never
> got woken - because do_wait's read_lock(&tasklist_lock) went ahead
> even while exit_notify held the write lock.

great, thanks for tracking this down!

	Ingo
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