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Date:   Thu, 25 Jul 2019 18:13:17 +0200
From:   Oleg Nesterov <oleg@redhat.com>
To:     Christian Brauner <christian@brauner.io>
Cc:     linux-kernel@vger.kernel.org, arnd@arndb.de, ebiederm@xmission.com,
        keescook@chromium.org, joel@joelfernandes.org, tglx@linutronix.de,
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        luto@kernel.org, akpm@linux-foundation.org, cyphar@cyphar.com,
        torvalds@linux-foundation.org, viro@zeniv.linux.org.uk,
        kernel-team@android.com, Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>,
        linux-api@vger.kernel.org
Subject: Re: [PATCH 4/5] pidfd: add CLONE_WAIT_PID
Message-ID: <20190725161316.GI4707@redhat.com>
References: <20190724144651.28272-1-christian@brauner.io>
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On 07/25, Christian Brauner wrote:
>
> The key is that you want to be able to create child processes in a
> shared library without the main programing having to know about this so
> that it can use P_ALL and never get stuff from the library.

OK, thanks...

in this case you should probablu pass 0 in CSIGNAL to ensure that the main
program won't be notified when that child exits.

Oleg.