diff --git a/sys/fs/sysvbfs/bfs.c b/sys/fs/sysvbfs/bfs.c
index f2e86cc9a3f4..0f7d521e815e 100644
--- a/sys/fs/sysvbfs/bfs.c
+++ b/sys/fs/sysvbfs/bfs.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: bfs.c,v 1.14 2012/03/18 02:40:55 christos Exp $	*/
+/*	$NetBSD: bfs.c,v 1.15 2012/05/08 14:28:55 tsutsui Exp $	*/
 
 /*-
  * Copyright (c) 2004 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(0, "$NetBSD: bfs.c,v 1.14 2012/03/18 02:40:55 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bfs.c,v 1.15 2012/05/08 14:28:55 tsutsui Exp $");
 #define	BFS_DEBUG
 
 #include <sys/param.h>
@@ -57,7 +57,6 @@ MALLOC_JUSTDEFINE(M_BFS, "sysvbfs core", "sysvbfs internal structures");
 #define	__FREE(a, s, t)		free(a)
 #endif
 #include <fs/sysvbfs/bfs.h>
-#include <fs/sysvbfs/sysvbfs.h>
 
 #ifdef BFS_DEBUG
 #define	DPRINTF(on, fmt, args...)	if (on) printf(fmt, ##args)
@@ -507,21 +506,6 @@ bfs_file_lookup(const struct bfs *bfs, const char *fname, int *start, int *end,
 	return true;
 }
 
-void
-bfs_file_setsize(struct vnode *v, size_t size)
-{
-	struct sysvbfs_node *bnode = v->v_data;
-	struct bfs_inode *inode = bnode->inode;
-
-	bnode->size = size;
-	uvm_vnp_setsize(v, bnode->size);
-	inode->end_sector = bnode->data_block +
-	    (ROUND_SECTOR(bnode->size) >> DEV_BSHIFT) - 1;
-	inode->eof_offset_byte = bnode->data_block * DEV_BSIZE +
-	    bnode->size - 1;
-	bnode->update_mtime = true;
-}
-
 bool
 bfs_dirent_lookup_by_inode(const struct bfs *bfs, int inode,
     struct bfs_dirent **dirent)
diff --git a/sys/fs/sysvbfs/bfs.h b/sys/fs/sysvbfs/bfs.h
index 48819b43c96b..d6d6ff460015 100644
--- a/sys/fs/sysvbfs/bfs.h
+++ b/sys/fs/sysvbfs/bfs.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: bfs.h,v 1.6 2012/03/18 02:40:55 christos Exp $	*/
+/*	$NetBSD: bfs.h,v 1.7 2012/05/08 14:28:55 tsutsui Exp $	*/
 
 /*-
  * Copyright (c) 2004 The NetBSD Foundation, Inc.
@@ -155,7 +155,6 @@ int bfs_file_rename(struct bfs *, const char *, const char *);
 bool bfs_file_lookup(const struct bfs *, const char *, int *, int *,
     size_t *);
 size_t bfs_file_size(const struct bfs_inode *);
-void bfs_file_setsize(struct vnode *, size_t);
 
 bool bfs_dump(const struct bfs *);
 
diff --git a/sys/fs/sysvbfs/sysvbfs_vnops.c b/sys/fs/sysvbfs/sysvbfs_vnops.c
index 7b63cd8f75c1..bfc0da418c5c 100644
--- a/sys/fs/sysvbfs/sysvbfs_vnops.c
+++ b/sys/fs/sysvbfs/sysvbfs_vnops.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: sysvbfs_vnops.c,v 1.44 2012/04/29 22:53:59 chs Exp $	*/
+/*	$NetBSD: sysvbfs_vnops.c,v 1.45 2012/05/08 14:28:55 tsutsui Exp $	*/
 
 /*-
  * Copyright (c) 2004 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sysvbfs_vnops.c,v 1.44 2012/04/29 22:53:59 chs Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sysvbfs_vnops.c,v 1.45 2012/05/08 14:28:55 tsutsui Exp $");
 
 #include <sys/param.h>
 #include <sys/kernel.h>
@@ -60,6 +60,8 @@ __KERNEL_RCSID(0, "$NetBSD: sysvbfs_vnops.c,v 1.44 2012/04/29 22:53:59 chs Exp $
 MALLOC_JUSTDEFINE(M_SYSVBFS_VNODE, "sysvbfs vnode", "sysvbfs vnode structures");
 MALLOC_DECLARE(M_BFS);
 
+static void sysvbfs_file_setsize(struct vnode *, size_t);
+
 int
 sysvbfs_lookup(void *arg)
 {
@@ -373,7 +375,7 @@ sysvbfs_setattr(void *arg)
 		case VREG:
 			if (vp->v_mount->mnt_flag & MNT_RDONLY)
 				return EROFS;
-			bfs_file_setsize(vp, vap->va_size);
+			sysvbfs_file_setsize(vp, vap->va_size);
 			break;
 		default:
 			return EOPNOTSUPP;
@@ -479,7 +481,7 @@ sysvbfs_write(void *arg)
 		return 0;
 
 	if (bnode->size < uio->uio_offset + uio->uio_resid) {
-		bfs_file_setsize(v, uio->uio_offset + uio->uio_resid);
+		sysvbfs_file_setsize(v, uio->uio_offset + uio->uio_resid);
 		extended = true;
 	}
 
@@ -492,7 +494,7 @@ sysvbfs_write(void *arg)
 		DPRINTF("%s: write %ldbyte\n", __func__, sz);
 	}
 	if (err)
-		bfs_file_setsize(v, bnode->size - uio->uio_resid);
+		sysvbfs_file_setsize(v, bnode->size - uio->uio_resid);
 
 	VN_KNOTE(v, NOTE_WRITE | (extended ? NOTE_EXTEND : 0));
 
@@ -893,3 +895,18 @@ sysvbfs_update(struct vnode *vp, const struct timespec *acc,
 
 	return 0;
 }
+
+static void
+sysvbfs_file_setsize(struct vnode *v, size_t size)
+{
+	struct sysvbfs_node *bnode = v->v_data;
+	struct bfs_inode *inode = bnode->inode;
+
+	bnode->size = size;
+	uvm_vnp_setsize(v, bnode->size);
+	inode->end_sector = bnode->data_block +
+	    (ROUND_SECTOR(bnode->size) >> DEV_BSHIFT) - 1;
+	inode->eof_offset_byte = bnode->data_block * DEV_BSIZE +
+	    bnode->size - 1;
+	bnode->update_mtime = true;
+}