md_flush_request
&& md_flush_request(mddev, bio))
EXPORT_SYMBOL(md_flush_request);
extern bool __must_check md_flush_request(struct mddev *mddev, struct bio *bio);
&& md_flush_request(mddev, bio))
&& md_flush_request(mddev, bio))
&& md_flush_request(mddev, bio))
if (md_flush_request(mddev, bi))