p->exit_state != 0 doesn't mean this process is dead, it may have sub-threads.
However, the new "p->exit_state && thread_group_empty(p)" check is not correct
either, this is just the temporary hack. Perhaps we can just remove this check,
but I don't understand orphaned process groups magic. At all. However, I think
exit_notify() is obviously and completely wrong wrt this helper.
Signed-off-by: Oleg Nesterov <[email protected]>
--- PT/kernel/exit.c~4_orphaned_pgrp 2007-12-06 18:06:09.000000000 +0300
+++ PT/kernel/exit.c 2007-12-07 20:25:40.000000000 +0300
@@ -219,9 +219,9 @@ static int will_become_orphaned_pgrp(str
int ret = 1;
do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
- if (p == ignored_task
- || p->exit_state
- || is_global_init(p->real_parent))
+ if ((p == ignored_task) ||
+ (p->exit_state && thread_group_empty(p)) ||
+ is_global_init(p->real_parent))
continue;
if (task_pgrp(p->real_parent) != pgrp &&
task_session(p->real_parent) == task_session(p)) {
--
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