Where RCU is watching is where it is OK to invoke rcu_read_lock().
Reported-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
include/linux/srcu.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index 4ba96e2cfa405..bab1dae3f69e6 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -270,7 +270,8 @@ static inline int srcu_read_lock(struct srcu_struct *ssp) __acquires(ssp)
* synchronize_rcu_expedited(), IPIs and all.
*
* Note that srcu_read_lock_lite() can be invoked only from those contexts
- * where RCU is watching. Otherwise, lockdep will complain.
+ * where RCU is watching, that is, from contexts where it would be legal
+ * to invoke rcu_read_lock(). Otherwise, lockdep will complain.
*/
static inline int srcu_read_lock_lite(struct srcu_struct *ssp) __acquires(ssp)
{
--
2.40.1
