diff --git a/sys/nfs/nfs_serv.c b/sys/nfs/nfs_serv.c
index ab76649d6002..10be138cf274 100644
--- a/sys/nfs/nfs_serv.c
+++ b/sys/nfs/nfs_serv.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: nfs_serv.c,v 1.62 2001/11/10 10:59:09 lukem Exp $	*/
+/*	$NetBSD: nfs_serv.c,v 1.63 2002/09/26 20:38:04 bouyer Exp $	*/
 
 /*
  * Copyright (c) 1989, 1993
@@ -59,7 +59,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: nfs_serv.c,v 1.62 2001/11/10 10:59:09 lukem Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nfs_serv.c,v 1.63 2002/09/26 20:38:04 bouyer Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -3010,7 +3010,10 @@ nfsrv_commit(nfsd, slp, procp, mrq)
 		return (0);
 	}
 	for_ret = VOP_GETATTR(vp, &bfor, cred, procp);
-	error = VOP_FSYNC(vp, cred, FSYNC_WAIT, off, off + cnt, procp);
+	if (cnt > 0)
+		error = VOP_FSYNC(vp, cred, FSYNC_WAIT, off, off + cnt, procp);
+	else
+		error = VOP_FSYNC(vp, cred, FSYNC_WAIT, off, vp->v_size, procp);
 	aft_ret = VOP_GETATTR(vp, &aft, cred, procp);
 	vput(vp);
 	nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);