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Use task_pgrp() task_session() in copy_process()

PATCH New [email protected] 1 participant 1 message Mar 13, 2007

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PATCH 5/5 Use task_pgrp() task_session() in copy_process()

From: Sukadev Bhattiprolu <[email protected]>
Subject: [PATCH 5/5] Use task_pgrp() task_session() in copy_process().

Use task_pgrp() and task_session() in copy_process(), and avoid find_pid() call when attaching the task to its process group and session.

Signed-off-by Sukadev Bhattiprolu <[email protected]>
Cc Cedric Le Goater <[email protected]>
Cc Dave Hansen <[email protected]>
Cc Serge Hallyn <[email protected]>
Cc [email protected]
Acked-by Eric W. Biederman <[email protected]>
---
 kernel/fork.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)
kernel/fork.c +3 -6
Index: lx26-21-rc3-mm2/kernel/fork.c
===================================================================
@@ -1252,14 +1252,11 @@ static struct task_struct *copy_process(
 	tracehook_init_task(p);
 
 	if (thread_group_leader(p)) {
-		pid_t pgid = process_group(current);
-		pid_t sid = process_session(current);
-
 		p->signal->tty = current->signal->tty;
-		p->signal->pgrp = pgid;
+		p->signal->pgrp = process_group(current);
 		set_signal_session(p->signal, process_session(current));
-		attach_pid(p, PIDTYPE_PGID, find_pid(pgid));
-		attach_pid(p, PIDTYPE_SID, find_pid(sid));
+		attach_pid(p, PIDTYPE_PGID, task_pgrp(current));
+		attach_pid(p, PIDTYPE_SID, task_session(current));
 
 		list_add_tail_rcu(&p->tasks, &init_task.tasks);
 		__get_cpu_var(process_counts)++;