devvn_refthread
csw = devvn_refthread(be_lun->vn, &dev, &ref);
csw = devvn_refthread(be_lun->vn, &dev, &ref);
csw = devvn_refthread(be_lun->vn, &dev, &ref);
csw = devvn_refthread(be_lun->vn, &dev, &ref);
csw = devvn_refthread(be_lun->vn, &dev, &ref);
csw = devvn_refthread(be_lun->vn, &dev, &ref);
csw = devvn_refthread(be_lun->vn, &dev, &ref);
*dswp = devvn_refthread(fp->f_vnode, devp, ref);
dsw = devvn_refthread(vp, &dev, &ref);
cdp = devvn_refthread(fp->f_vnode, &dev, &ref);
csw = devvn_refthread(vp, &dev, &ref);
struct cdevsw *devvn_refthread(struct vnode *vp, struct cdev **devp, int *_ref);