From: Oleg Nesterov <oleg@redhat.com>
To: Christian Brauner <brauner@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Tycho Andersen <tycho@tycho.pizza>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 0/1] pidfd: implement PIDFD_THREAD flag for pidfd_open()
Date: Wed, 31 Jan 2024 15:12:04 +0100 [thread overview]
Message-ID: <20240131141204.GA24130@redhat.com> (raw)
In-Reply-To: <20240131132541.GA23632@redhat.com>
Before I forget this...
After this patch we can easily add another feature, pidfd_poll()
can add, say, POLLHUP to poll_flags if the pid is "dead".
So the user can do
poll(pidfd, { .revents = POLLHUP });
and it will block until release_task() is called and this pid is
no longer in use (pid_task() == NULL).
Do you think this can be useful?
Oleg.
next prev parent reply other threads:[~2024-01-31 14:13 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-31 13:25 [PATCH v3 0/1] pidfd: implement PIDFD_THREAD flag for pidfd_open() Oleg Nesterov
2024-01-31 13:26 ` [PATCH v3 1/1] " Oleg Nesterov
2024-01-31 14:12 ` Christian Brauner
2024-01-31 14:19 ` Oleg Nesterov
2024-01-31 17:23 ` Tycho Andersen
2024-01-31 18:01 ` Oleg Nesterov
2024-01-31 18:15 ` Christian Brauner
2024-02-01 17:25 ` Christian Brauner
2024-02-01 18:10 ` Oleg Nesterov
2024-02-02 12:50 ` Christian Brauner
2024-02-05 15:22 ` Oleg Nesterov
2024-02-06 13:38 ` Christian Brauner
2024-02-08 7:54 ` kernel test robot
2024-02-08 8:58 ` Christian Brauner
2024-02-08 9:18 ` Oleg Nesterov
2024-01-31 13:58 ` [PATCH v3 0/1] " Christian Brauner
2024-01-31 14:12 ` Oleg Nesterov [this message]
2024-01-31 14:39 ` Christian Brauner
2024-01-31 16:10 ` Oleg Nesterov
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