57 	    struct vn_clusterw *vnc, struct buf *last_bp, int gbflags);
641 cluster_write(struct vnode *vp, struct vn_clusterw *vnc, struct buf *bp,  in cluster_write()  argument
664 		vnc->v_lasta = vnc->v_clen = vnc->v_cstart = vnc->v_lastw = 0;  in cluster_write()
666 	if (vnc->v_clen == 0 || lbn != vnc->v_lastw + 1 ||  in cluster_write()
667 	    (bp->b_blkno != vnc->v_lasta + btodb(lblocksize))) {  in cluster_write()
669 		if (vnc->v_clen != 0) {  in cluster_write()
686 			cursize = vnc->v_lastw - vnc->v_cstart + 1;  in cluster_write()
688 			    lbn != vnc->v_lastw + 1 || vnc->v_clen <= cursize) {  in cluster_write()
691 					    vnc->v_cstart, cursize, gbflags);  in cluster_write()
697 				buflist = cluster_collectbufs(vp, vnc, bp,  in cluster_write()
724 						    lblocksize, vnc->v_cstart,  in cluster_write()
735 					vnc->v_lastw = lbn;  in cluster_write()
736 					vnc->v_lasta = bp->b_blkno;  in cluster_write()
753 			vnc->v_clen = 0;  in cluster_write()
754 			vnc->v_lasta = pbn;  in cluster_write()
755 			vnc->v_cstart = lbn + 1;  in cluster_write()
756 			vnc->v_lastw = lbn;  in cluster_write()
759 		vnc->v_clen = maxclen;  in cluster_write()
762 			vnc->v_cstart = lbn + 1;  in cluster_write()
765 			vnc->v_cstart = lbn;  in cluster_write()
768 	} else if (lbn == vnc->v_cstart + vnc->v_clen) {  in cluster_write()
777 			cluster_wbuild_wb(vp, lblocksize, vnc->v_cstart,  in cluster_write()
778 			    vnc->v_clen + 1, gbflags);  in cluster_write()
780 		vnc->v_clen = 0;  in cluster_write()
781 		vnc->v_cstart = lbn + 1;  in cluster_write()
795 	vnc->v_lastw = lbn;  in cluster_write()
796 	vnc->v_lasta = pbn;  in cluster_write()
1043 cluster_collectbufs(struct vnode *vp, struct vn_clusterw *vnc,  in cluster_collectbufs()  argument
1051 	len = vnc->v_lastw - vnc->v_cstart + 1;  in cluster_collectbufs()
1056 	for (lbn = vnc->v_cstart, i = 0; i < len; lbn++, i++) {  in cluster_collectbufs()
1082 cluster_init_vn(struct vn_clusterw *vnc)  in cluster_init_vn()  argument
1084 	vnc->v_lasta = 0;  in cluster_init_vn()
1085 	vnc->v_clen = 0;  in cluster_init_vn()
1086 	vnc->v_cstart = 0;  in cluster_init_vn()
1087 	vnc->v_lastw = 0;  in cluster_init_vn()