linux-phytec-ti

drbd: adjust assert in w_bitmap_io to account for BM_LOCKED_CHANGE_ALLOWED

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>