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authorOleg Nesterov <oleg@redhat.com>2011-06-22 23:08:18 +0200
committerOleg Nesterov <oleg@redhat.com>2011-06-27 20:30:08 +0200
commit53c8f9f199b239668e6b1a907735ee323a0d1ccd (patch)
tree785afb9c72a2df27cd6802cf311df18711c59b76 /kernel/signal.c
parent06d984737bac0545fe20bb5447ee488b95adb531 (diff)
downloadop-kernel-dev-53c8f9f199b239668e6b1a907735ee323a0d1ccd.zip
op-kernel-dev-53c8f9f199b239668e6b1a907735ee323a0d1ccd.tar.gz
make do_notify_parent() return bool
- change do_notify_parent() to return a boolean, true if the task should be reaped because its parent ignores SIGCHLD. - update the only caller which checks the returned value, exit_notify(). This temporary uglifies exit_notify() even more, will be cleanuped by the next change. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 1550aee..d52e82c 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1577,15 +1577,15 @@ ret:
* Let a parent know about the death of a child.
* For a stopped/continued status change, use do_notify_parent_cldstop instead.
*
- * Returns -1 if our parent ignored us and so we've switched to
- * self-reaping, or else @sig.
+ * Returns true if our parent ignored us and so we've switched to
+ * self-reaping.
*/
-int do_notify_parent(struct task_struct *tsk, int sig)
+bool do_notify_parent(struct task_struct *tsk, int sig)
{
struct siginfo info;
unsigned long flags;
struct sighand_struct *psig;
- int ret = sig;
+ bool autoreap = false;
BUG_ON(sig == -1);
@@ -1649,16 +1649,17 @@ int do_notify_parent(struct task_struct *tsk, int sig)
* is implementation-defined: we do (if you don't want
* it, just use SIG_IGN instead).
*/
- ret = tsk->exit_signal = -1;
+ autoreap = true;
+ tsk->exit_signal = -1;
if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)
- sig = -1;
+ sig = 0;
}
- if (valid_signal(sig) && sig > 0)
+ if (valid_signal(sig) && sig)
__group_send_sig_info(sig, &info, tsk->parent);
__wake_up_parent(tsk, tsk->parent);
spin_unlock_irqrestore(&psig->siglock, flags);
- return ret;
+ return autoreap;
}
/**
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