Re: [PATCH] sched: Consider task_struct::saved_state in wait_task_inactive().

[Sebastian Andrzej Siewior]

On 2023-02-22 14:36:14 [+0100], Peter Zijlstra wrote:
> Which if the very few wait_task_inactive() users requires this?

ptrace is the remaining (known) one (just verified on v6.2-rt3).
ptrace_check_attach() waits for the child which blocks on tasklist_lock.

tglx argued that wait_task_inactive() should work regardless of the
task, that is being waited for, blocks on a sleeping lock.

Sebastian