455 	struct pipe_inode_info *pipe = file->private_data;  in wait_for_dump_helpers()  local
457 	pipe_lock(pipe);  in wait_for_dump_helpers()
458 	pipe->readers++;  in wait_for_dump_helpers()
459 	pipe->writers--;  in wait_for_dump_helpers()
460 	wake_up_interruptible_sync(&pipe->wait);  in wait_for_dump_helpers()
461 	kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);  in wait_for_dump_helpers()
462 	pipe_unlock(pipe);  in wait_for_dump_helpers()
468 	wait_event_interruptible(pipe->wait, pipe->readers == 1);  in wait_for_dump_helpers()
470 	pipe_lock(pipe);  in wait_for_dump_helpers()
471 	pipe->readers--;  in wait_for_dump_helpers()
472 	pipe->writers++;  in wait_for_dump_helpers()
473 	pipe_unlock(pipe);  in wait_for_dump_helpers()