[PATCH] restore ->pdeath_signal behaviour
Commit b2b2cbc4b2a2f389442549399a993a8306420baf introduced a user-
visible change: ->pdeath_signal is sent only when the entire thread
group exits.
While this change is imho good, it may break things. So restore the
old behaviour for now.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
To: Albert Cahalan <acahalan@gmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Andrew Morton <akpm@osdl.org>
Cc: Linus Torvalds <torvalds@osdl.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Qi Yong <qiyong@fc-cn.com>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/kernel/exit.c b/kernel/exit.c
index 46cf6b6..3540172 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -597,6 +597,10 @@
static void
reparent_thread(struct task_struct *p, struct task_struct *father, int traced)
{
+ if (p->pdeath_signal)
+ /* We already hold the tasklist_lock here. */
+ group_send_sig_info(p->pdeath_signal, SEND_SIG_NOINFO, p);
+
/* Move the child from its dying parent to the new one. */
if (unlikely(traced)) {
/* Preserve ptrace links if someone else is tracing this child. */
@@ -631,10 +635,6 @@
/* We don't want people slaying init. */
if (p->exit_signal != -1)
p->exit_signal = SIGCHLD;
-
- if (p->pdeath_signal)
- /* We already hold the tasklist_lock here. */
- group_send_sig_info(p->pdeath_signal, SEND_SIG_NOINFO, p);
/* If we'd notified the old parent about this child's death,
* also notify the new parent.