summaryrefslogtreecommitdiff
path: root/kernel/cgroup_freezer.c
diff options
context:
space:
mode:
authorTony Lindgren <tony@atomide.com>2010-05-20 11:07:23 -0700
committerTony Lindgren <tony@atomide.com>2010-05-20 11:07:23 -0700
commitdf760137ad3cbfa15ceed42478f81bff01b6e799 (patch)
treebe939c9d11094858d74141a4c62cb23f477754d8 /kernel/cgroup_freezer.c
parent754b8e653412106ff613f4750b197f807fcd8347 (diff)
parentde997718b64df2f766736f23f8557da450b83a25 (diff)
Merge branch 'omap-boards' into omap-for-linus
Diffstat (limited to 'kernel/cgroup_freezer.c')
-rw-r--r--kernel/cgroup_freezer.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index da5e13975531..e5c0244962b0 100644
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -205,9 +205,12 @@ static void freezer_fork(struct cgroup_subsys *ss, struct task_struct *task)
* No lock is needed, since the task isn't on tasklist yet,
* so it can't be moved to another cgroup, which means the
* freezer won't be removed and will be valid during this
- * function call.
+ * function call. Nevertheless, apply RCU read-side critical
+ * section to suppress RCU lockdep false positives.
*/
+ rcu_read_lock();
freezer = task_freezer(task);
+ rcu_read_unlock();
/*
* The root cgroup is non-freezable, so we can skip the