REQ_F_BL_NO_RECYCLE
req->flags |= REQ_F_BUFFERS_COMMIT | REQ_F_BL_NO_RECYCLE;
if (req->flags & REQ_F_BL_NO_RECYCLE)
req->flags |= REQ_F_BL_NO_RECYCLE;
req->flags |= REQ_F_REISSUE | REQ_F_BL_NO_RECYCLE;
req->flags |= REQ_F_REISSUE | REQ_F_BL_NO_RECYCLE;