Date:   Wed, 25 Jan 2023 17:45:46 +0100
From:   Oleg Nesterov <oleg@redhat.com>
To:     Dmitry Vyukov <dvyukov@google.com>
Cc:     tglx@linutronix.de, linux-kernel@vger.kernel.org,
        "Eric W . Biederman" <ebiederm@xmission.com>,
        Frederic Weisbecker <frederic@kernel.org>,
        Marco Elver <elver@google.com>
Subject: Re: [RFC PATCH v2] posix-timers: Support delivery of signals to the
 current thread
Message-ID: <20230125164546.GD13746@redhat.com>
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On 01/25, Oleg Nesterov wrote:
>
> > 2. The signal is still queued into process shared_pending
>
> Yes. But just in case, please note that if this signal is not realtime
> (sigev_signo < SIGRTMIN) and it is already queued, it will be dropped.
> And I do not know if this can work for you.
>
> However this is what we already have with SIGEV_SIGNAL w/o SIGEV_THREAD_ID,
> and the same is true for SIGEV_THREAD_ID if the signal is already pending in
> target_task->pending.

Damn ;) please ignore. I forgot that send_sigqueue() doesn't check
legacy_queue().

Oleg.