--- kernel/bsd/vfs/vfs_cluster.c	2018/04/24 18:26:06	1.1
+++ kernel/bsd/vfs/vfs_cluster.c	2018/04/24 18:31:23	1.1.1.2
@@ -77,7 +77,7 @@
 struct buf *cluster_rbuild __P((struct vnode *, u_quad_t, struct buf *,
 	    daddr_t, daddr_t, long, int, long, long));
 struct buf *cluster_create __P((struct vnode *, struct buf *, daddr_t, daddr_t, long,
-	    int, long, daddr_t *));
+	    int, long, daddr_t *, int));
 int         cluster_block __P((struct vnode *, u_quad_t, struct buf *, long, long));
 void	    cluster_wbuild __P((struct vnode *, struct buf *, long,
 	    daddr_t, int, daddr_t, long, int));
@@ -530,7 +530,7 @@ int cluster_block(vp, filesize, bp, size
 	if ((u_quad_t)size * ((u_quad_t)(lbn + num_io)) > filesize)
 	        num_io = (filesize - ((u_quad_t)size * (u_quad_t)lbn)) / size;
 
-	cbp = cluster_create(vp, bp, lbn, blkno, size, num_io, secsize, &ioblkno);
+	cbp = cluster_create(vp, bp, lbn, blkno, size, num_io, secsize, &ioblkno, B_AGE);
 
 	if (cbp) {
 		(void) VOP_STRATEGY(cbp);
@@ -606,7 +606,7 @@ advisory_read(vp, filesize, lblkno, size
 		}
 		num_io = min(num, num_io + 1);
 
-		cbp = cluster_create(vp, NULL, lblkno, blkno, size, num_io, secsize, &ioblkno);
+		cbp = cluster_create(vp, NULL, lblkno, blkno, size, num_io, secsize, &ioblkno, 0);
 
 		if (cbp) {
 			KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, 13)) | DBG_FUNC_NONE,
@@ -764,7 +764,7 @@ cluster_rbuild(vp, filesize, bp, lbn, bl
 
 
 struct buf *
-cluster_create(vp, bp, lbn, blkno, size, run, secsize, ioblkno)
+cluster_create(vp, bp, lbn, blkno, size, run, secsize, ioblkno, flags)
 	struct vnode *vp;
 	struct buf *bp;
 	daddr_t lbn;
@@ -773,6 +773,7 @@ cluster_create(vp, bp, lbn, blkno, size,
 	int run;
 	long secsize;
 	daddr_t *ioblkno;
+	int flags;
 {
 	struct cluster_save *b_save;
 	struct buf *tbp, *cbp;
@@ -858,7 +859,7 @@ cluster_create(vp, bp, lbn, blkno, size,
 		cp += size;
 
 		if (tbp != bp)
-		        tbp->b_flags |= (B_READ | B_ASYNC);
+		        tbp->b_flags |= (B_READ | B_ASYNC | flags);
 		b_save->bs_children[i] = tbp;
 		b_save->bs_nchildren++;
 	}