On Sat, 3 May 2008, Oleg Nesterov wrote:
quoted text
> 
> Note: I am not sure we shouldn't do the opposite, free sigqueue + cancel the
> pending signal, but this needs some ugly changes. Perhaps we should reconsider
> this change later. See also http://bugzilla.kernel.org/show_bug.cgi?id=10460

You know what, I think there might be an even simple solution.

How about just setting a bit saying it is canceled - and nothing more. 
Then, the dequeue logic can be just taught to ignore those things.

Doesn't that sound like the simple way to cancel signals? Make 
collect_signal() just do a "return 0" if the signal has been flushed..

			Linus
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