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pidfd: kill the no longer needed do_notify_pidfd() in de_thread()

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Now that __change_pid() does wake_up_all(&pid->wait_pidfd) we can kill
do_notify_pidfd(leader) in de_thread(), it calls release_task(leader)
right after that and this implies detach_pid(leader, PIDTYPE_PID).

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240202131248.GA26022@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Oleg Nesterov 2024-02-02 14:12:48 +01:00 committed by Christian Brauner
parent 43f0df54c9
commit 90f92b68c9
1 changed files with 0 additions and 5 deletions
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5
fs/exec.c
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@ -1143,11 +1143,6 @@ static int de_thread(struct task_struct *tsk)
BUG_ON(leader->exit_state != EXIT_ZOMBIE);
leader->exit_state = EXIT_DEAD;
/*
* leader and tsk exhanged their pids, the old pid dies,
* wake up the PIDFD_THREAD waiters.
*/
do_notify_pidfd(leader);
/*
* We are going to release_task()->ptrace_unlink() silently,
* the tracer can sleep in do_wait(). EXIT_DEAD guarantees