From 3217ab97f14c5c8f9f975ed8c40c351164b0b10e Mon Sep 17 00:00:00 2001
From: Vitaliy Gusev <vgusev@openvz.org>
Date: Thu, 9 Apr 2009 09:50:35 -0600
Subject: [PATCH] kthread: Don't looking for a task in create_kthread() #2
Remove the unnecessary find_task_by_pid_ns(). kthread() can just
use "current" to get the same result.
Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
kernel/kthread.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 84bbadd4d0213..c013bf000ce67 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -76,6 +76,7 @@ static int kthread(void *_create)
/* OK, tell user we're spawned, wait for stop or wakeup */
__set_current_state(TASK_UNINTERRUPTIBLE);
+ create->result = current;
complete(&create->started);
schedule();
@@ -101,9 +102,6 @@ static void create_kthread(struct kthread_create_info *create)
} else {
struct sched_param param = { .sched_priority = 0 };
wait_for_completion(&create->started);
- read_lock(&tasklist_lock);
- create->result = find_task_by_pid_ns(pid, &init_pid_ns);
- read_unlock(&tasklist_lock);
/*
* root may have changed our (kthreadd's) priority or CPU mask.
* The kernel thread should not inherit these properties.
--
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