attach_pid() with struct pid parameter

attach_pid() currently takes a pid_t and then uses find_pid() to find the
corresponding struct pid.  Sometimes we already have the struct pid.  We can
then skip find_pid() if attach_pid() were to take a struct pid parameter.

Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: <containers@lists.osdl.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 7a5fd77f8fb0..e93691e9b325 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -302,12 +302,12 @@ void __set_special_pids(pid_t session, pid_t pgrp)
         if (process_session(curr) != session) {
                 detach_pid(curr, PIDTYPE_SID);
                 set_signal_session(curr->signal, session);
-                attach_pid(curr, PIDTYPE_SID, session);
+                attach_pid(curr, PIDTYPE_SID, find_pid(session));
         }
         if (process_group(curr) != pgrp) {
                 detach_pid(curr, PIDTYPE_PGID);
                 curr->signal->pgrp = pgrp;
-                attach_pid(curr, PIDTYPE_PGID, pgrp);
+                attach_pid(curr, PIDTYPE_PGID, find_pid(pgrp));
         }
 }