Re: [PATCH 2/4] posix timers: sigqueue_free: don't free sigqueue if it is queued

From: Oleg Nesterov
Date: Sat May 17 2008 - 11:15:05 EST

On 05/03, Linus Torvalds wrote:
> On Sat, 3 May 2008, Oleg Nesterov wrote:
> >
> > 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
> You know what, I think there might be an even simple solution.
> How about just setting a bit saying it is canceled

Yes, good idea, I'll send the patch in a minute.

But now I see I didn't read your message to the end,

> - and nothing more.
> Then, the dequeue logic can be just taught to ignore those things.

Unless I missed something again, "nothing more" can't work. We still
need this patch (re-sended). We still need to free sigqueue if it is
not queued, and we must not dequeue it if it is queued - otherwise we
will free it along with the new "canceled" bit.


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