Commit 90f92b68 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Christian Brauner
Browse files

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



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: default avatarOleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20240202131248.GA26022@redhat.com


Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 43f0df54

fs/exec.c

+0 −5
Original line number Diff line number Diff line
@@ -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