Using lockdep instead of spin_is_locked()

One of the main uses of spin_is_locked() is to require that a lock is held when a function is called, for debugging, but lockdep_assert_held() is better for this purpose since it won't make a mistake when someone else is holding the lock. This patch series replaces all of this kind of use of

Using lockdep instead of spin_is_locked()

One of the main uses of spin_is_locked() is to require that a lock is held when a function is called, for debugging, but lockdep_assert_held() is better for this purpose since it won't make a mistake when someone else is holding the lock. This patch series replaces all of this kind of use of