[RFC][PATCH 07/11] signal: Deliver group signals via PIDTYPE_TGID not PIDTYPE_PID

[Eric W. Biederman]

Now that we can make the distinction use PIDTYPE_TGID rather than
PIDTYPE_PID.  There is no immediate effect as they point point at the
same task, but this allows using enum pid_type instead of bool group
in the signal sending functions.

Signed-off-by: "Eric W. Biederman" <ebied...@xmission.com>
---
 kernel/signal.c            | 4 ++--
 kernel/time/posix-timers.c | 7 +++----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index 8d8a940422a8..7caf17d76a84 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1315,7 +1315,7 @@ int kill_pid_info(int sig, struct siginfo *info, struct 
pid *pid)
 
        for (;;) {
                rcu_read_lock();
-               p = pid_task(pid, PIDTYPE_PID);
+               p = pid_task(pid, PIDTYPE_TGID);
                if (p)
                        error = group_send_sig_info(sig, info, p);
                rcu_read_unlock();
@@ -1361,7 +1361,7 @@ int kill_pid_info_as_cred(int sig, struct siginfo *info, 
struct pid *pid,
                return ret;
 
        rcu_read_lock();
-       p = pid_task(pid, PIDTYPE_PID);
+       p = pid_task(pid, PIDTYPE_TGID);
        if (!p) {
                ret = -ESRCH;
                goto out_unlock;
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index e08ce3f27447..d640e26d0de0 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -347,12 +347,11 @@ int posix_timer_event(struct k_itimer *timr, int 
si_private)
         */
        timr->sigq->info.si_sys_private = si_private;
 
+       shared = !(timr->it_sigev_notify & SIGEV_THREAD_ID);
        rcu_read_lock();
-       task = pid_task(timr->it_pid, PIDTYPE_PID);
-       if (task) {
-               shared = !(timr->it_sigev_notify & SIGEV_THREAD_ID);
+       task = pid_task(timr->it_pid, shared ? PIDTYPE_TGID : PIDTYPE_PID);
+       if (task)
                ret = send_sigqueue(timr->sigq, task, shared);
-       }
        rcu_read_unlock();
        /* If we failed to send the signal the timer stops. */
        return ret > 0;
-- 
2.17.1