--- src/sys/kern/vfs_cluster.c	2008/05/18 05:54:25	1.36
+++ src/sys/kern/vfs_cluster.c	2008/06/12 23:26:37	1.37
@@ -265,7 +265,7 @@ single_block_read:
 		if (seqcount < ntoread)
 			ntoread = seqcount;
 
-		rbp->b_flags |= B_RAM;
+		rbp->b_flags |= B_RAM | B_AGE;
 		if (burstbytes) {
 			rbp = cluster_rbuild(vp, filesize, loffset,
 					     doffset, size, 
@@ -439,6 +439,12 @@ cluster_rbuild(struct vnode *vp, off_t f
 				tbp->b_flags |= B_RAM;
 
 			/*
+			 * Depress the priority of buffers not explicitly
+			 * requested.
+			 */
+			tbp->b_flags |= B_AGE;
+
+			/*
 			 * Set the block number if it isn't set, otherwise
 			 * if it is make sure it matches the block number we
 			 * expect.