From: Namhyung Kim <namhyung@gmail.com>
Date: Wed, 27 Oct 2010 22:34:10 +0000 (-0700)
Subject: exit: add lock context annotation on find_new_reaper()
X-Git-Tag: v2.6.37-rc1~85^2~58
X-Git-Url: https://bbs.cooldavid.org/git/?p=net-next-2.6.git;a=commitdiff_plain;h=d16e15f5b029fc7d03540ba0e5fb23b0abb0ebe0

exit: add lock context annotation on find_new_reaper()

find_new_reaper() releases and regrabs tasklist_lock but was missing
proper annotations.  Add it.  This remove following sparse warning:

 warning: context imbalance in 'find_new_reaper' - unexpected unlock

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/exit.c b/kernel/exit.c
index 894179a32ec..b194febf579 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -703,6 +703,8 @@ static void exit_mm(struct task_struct * tsk)
  * space.
  */
 static struct task_struct *find_new_reaper(struct task_struct *father)
+	__releases(&tasklist_lock)
+	__acquires(&tasklist_lock)
 {
 	struct pid_namespace *pid_ns = task_active_pid_ns(father);
 	struct task_struct *thread;