Unverified Commit 6731cd97 authored by Mateusz Guzik's avatar Mateusz Guzik Committed by Christian Brauner
Browse files

exit: hoist get_pid() in release_task() outside of tasklist_lock 



Reduces hold time as get_pid() contains an atomic.

Reviewed-by: default avatarOleg Nesterov <oleg@redhat.com>
Signed-off-by: default avatarMateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/r/20250206164415.450051-3-mjguzik@gmail.com


Acked-by: default avatar"Liam R. Howlett" <Liam.Howlett@Oracle.com>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 1ab27856

kernel/exit.c

+2 −1
Original line number Diff line number Diff line
@@ -240,9 +240,10 @@ void release_task(struct task_struct *p) 


	cgroup_release(p);



	thread_pid = get_pid(p->thread_pid);



	write_lock_irq(&tasklist_lock);

	ptrace_release_task(p);

	thread_pid = get_pid(p->thread_pid);

	__exit_signal(p);



	/*