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authorIngo Molnar <mingo@elte.hu>2010-03-04 11:51:29 +0100
committerIngo Molnar <mingo@elte.hu>2010-03-04 11:51:29 +0100
commite02c4fd3142dfb9412531bbfabd510a2a7c6ea46 (patch)
tree61b64506b2c016e050f940a89d1ffd36b7c00fdf /kernel/pid.c
parenttracing: Include irqflags headers from trace clock (diff)
parenttracing: Fix warning in s_next of trace file ops (diff)
downloadlinux-e02c4fd3142dfb9412531bbfabd510a2a7c6ea46.tar.gz
linux-e02c4fd3142dfb9412531bbfabd510a2a7c6ea46.zip
Merge branch 'tip/tracing/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent
Diffstat (limited to 'kernel/pid.c')
-rw-r--r--kernel/pid.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/pid.c b/kernel/pid.c
index 2e17c9c92cbe..b08e697cd83f 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -367,7 +367,7 @@ struct task_struct *pid_task(struct pid *pid, enum pid_type type)
struct task_struct *result = NULL;
if (pid) {
struct hlist_node *first;
- first = rcu_dereference(pid->tasks[type].first);
+ first = rcu_dereference_check(pid->tasks[type].first, rcu_read_lock_held() || lockdep_is_held(&tasklist_lock));
if (first)
result = hlist_entry(first, struct task_struct, pids[(type)].node);
}