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Commit 241ceee0 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Linus Torvalds
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[PATCH] restore ->pdeath_signal behaviour 



Commit b2b2cbc4 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: default avatarOleg 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: default avatarLinus Torvalds <torvalds@osdl.org>
parent 9d572ecb

kernel/exit.c

+4 −4
Original line number Diff line number Diff line
@@ -597,6 +597,10 @@ choose_new_parent(struct task_struct *p, struct task_struct *reaper) 
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.  */
@@ -632,10 +636,6 @@ reparent_thread(struct task_struct *p, struct task_struct *father, int traced) 
	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.

	 */