The current SRCU implementation has an idx argument of zero or one, and never anything else. This commit therefore adds a WARN_ON_ONCE() to complain if this restriction is violated.
Signed-off-by: Paul E. McKenney <[email protected]> --- include/linux/srcu.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/srcu.h b/include/linux/srcu.h index c614375cd264..33cf83b9bda8 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -223,6 +223,7 @@ srcu_read_lock_notrace(struct srcu_struct *ssp) __acquires(ssp) static inline void srcu_read_unlock(struct srcu_struct *ssp, int idx) __releases(ssp) { + WARN_ON_ONCE(idx & ~0x1); rcu_lock_release(&(ssp)->dep_map); __srcu_read_unlock(ssp, idx); } -- 2.17.1
