diff --git a/sys/ufs/lfs/lfs_balloc.c b/sys/ufs/lfs/lfs_balloc.c
index df02ee1a84f7..ec3443d8eca8 100644
--- a/sys/ufs/lfs/lfs_balloc.c
+++ b/sys/ufs/lfs/lfs_balloc.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: lfs_balloc.c,v 1.26 2000/11/17 19:14:41 perseant Exp $	*/
+/*	$NetBSD: lfs_balloc.c,v 1.27 2000/11/21 00:00:31 perseant Exp $	*/
 
 /*-
  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
@@ -413,7 +413,7 @@ lfs_fragextend(vp, osize, nsize, lbn, bpp)
 
 	/* Adjust locked-list accounting */
 	if (((*bpp)->b_flags & (B_LOCKED | B_CALL)) == B_LOCKED)
-		locked_queue_bytes += btodb((*bpp)->b_bufsize - obufsize);
+		locked_queue_bytes += (*bpp)->b_bufsize - obufsize;
 
 	bzero((char *)((*bpp)->b_data) + osize, (u_int)(nsize - osize));
 
diff --git a/sys/ufs/lfs/lfs_inode.c b/sys/ufs/lfs/lfs_inode.c
index a9108f8f6ade..05a2d84caf9c 100644
--- a/sys/ufs/lfs/lfs_inode.c
+++ b/sys/ufs/lfs/lfs_inode.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: lfs_inode.c,v 1.46 2000/11/17 19:14:41 perseant Exp $	*/
+/*	$NetBSD: lfs_inode.c,v 1.47 2000/11/21 00:00:31 perseant Exp $	*/
 
 /*-
  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
@@ -229,6 +229,7 @@ lfs_truncate(v)
 	off_t osize;
 	long lastseg;
 	size_t bc;
+	int obufsize, odb;
 
 	if (length < 0)
 		return (EINVAL);
@@ -332,6 +333,8 @@ lfs_truncate(v)
 			lfs_reserve(fs, ovp, -fsbtodb(fs, 2 * NIADDR + 3));
 			return (error);
 		}
+		obufsize = bp->b_bufsize;
+		odb = btodb(bp->b_bcount);
 		oip->i_ffs_size = length;
 		size = blksize(fs, oip, lbn);
 		(void) uvm_vnp_uncache(ovp);
@@ -339,6 +342,11 @@ lfs_truncate(v)
 			memset((char *)bp->b_data + offset, 0,
 			       (u_int)(size - offset));
 		allocbuf(bp, size);
+		if (bp->b_flags & B_DELWRI) {
+			if ((bp->b_flags & (B_LOCKED | B_CALL)) == B_LOCKED)
+				locked_queue_bytes -= obufsize - bp->b_bufsize;
+			fs->lfs_avail += odb - btodb(size);
+		}
 		(void) VOP_BWRITE(bp);
 	}
 	uvm_vnp_setsize(ovp, length);
@@ -644,6 +652,11 @@ lfs_indirtrunc(struct inode *ip, ufs_daddr_t lbn, daddr_t dbn,
 	if (copy != NULL) {
 		FREE(copy, M_TEMP);
 	} else {
+		if (bp->b_flags & B_DELWRI) {
+			LFS_UNLOCK_BUF(bp);
+			fs->lfs_avail += btodb(bp->b_bcount);
+			wakeup(&fs->lfs_avail);
+		}
 		bp->b_flags |= B_INVAL;
 		brelse(bp);
 	}
@@ -689,6 +702,7 @@ restart:
 		if (bp->b_flags & B_DELWRI) {
 			bp->b_flags &= ~B_DELWRI;
 			fs->lfs_avail += btodb(bp->b_bcount);
+			wakeup(&fs->lfs_avail);
 		}
 		LFS_UNLOCK_BUF(bp);
 		brelse(bp);
@@ -712,6 +726,7 @@ restart:
 		if (bp->b_flags & B_DELWRI) {
 			bp->b_flags &= ~B_DELWRI;
 			fs->lfs_avail += btodb(bp->b_bcount);
+			wakeup(&fs->lfs_avail);
 		}
 		LFS_UNLOCK_BUF(bp);
 		brelse(bp);