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SubjectRe: [patch] exit_free(), 2.5.31-A0

On Tue, 13 Aug 2002, Linus Torvalds wrote:

> The fact that the child doesn't want to send a signal to the parent on
> exit is a totally different matter, and should already be supported by
> just giving a zero signal number.

exit signal 0 is already being used and relied on by kmod - i originally
implemented it that way. In that case the child thread becomes a zombie
until the parent exits, and then it gets reparented to init. I did not
want to break any existing semantics (no matter how broken they appeared
to me) thus i introduced CLONE_DETACHED. But thinking about it, 'a zombie
staying around indefinitely' is not a semantics that it worth carrying too
far? But in case, if signal 0 is the preferred interface then i'm all for
it - this is not really a clone() property but an exit-signalling


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