diff --git a/sys/fs/msdosfs/msdosfs_vnops.c b/sys/fs/msdosfs/msdosfs_vnops.c
index 04be9672deb3..9ab5db614ded 100644
--- a/sys/fs/msdosfs/msdosfs_vnops.c
+++ b/sys/fs/msdosfs/msdosfs_vnops.c
@@ -1897,6 +1897,7 @@ struct vop_vector msdosfs_vnodeops = {
 	.vop_close =		msdosfs_close,
 	.vop_create =		msdosfs_create,
 	.vop_fsync =		msdosfs_fsync,
+	.vop_fdatasync =	vop_stdfdatasync_buf,
 	.vop_getattr =		msdosfs_getattr,
 	.vop_inactive =		msdosfs_inactive,
 	.vop_link =		msdosfs_link,
diff --git a/sys/kern/vfs_default.c b/sys/kern/vfs_default.c
index 0e74b41d03ee..b4e5a9d28358 100644
--- a/sys/kern/vfs_default.c
+++ b/sys/kern/vfs_default.c
@@ -735,6 +735,17 @@ vop_stdfdatasync(struct vop_fdatasync_args *ap)
 	return (VOP_FSYNC(ap->a_vp, MNT_WAIT, ap->a_td));
 }
 
+int
+vop_stdfdatasync_buf(struct vop_fdatasync_args *ap)
+{
+	struct vop_fsync_args apf;
+
+	apf.a_vp = ap->a_vp;
+	apf.a_waitfor = MNT_WAIT;
+	apf.a_td = ap->a_td;
+	return (vop_stdfsync(&apf));
+}
+
 /* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */
 int
 vop_stdgetpages(ap)
diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h
index 02707117d21b..181ec7f1d5e0 100644
--- a/sys/sys/vnode.h
+++ b/sys/sys/vnode.h
@@ -720,6 +720,7 @@ int	vfs_write_suspend(struct mount *mp, int flags);
 int	vfs_write_suspend_umnt(struct mount *mp);
 void	vnlru_free(int, struct vfsops *);
 int	vop_stdbmap(struct vop_bmap_args *);
+int	vop_stdfdatasync_buf(struct vop_fdatasync_args *);
 int	vop_stdfsync(struct vop_fsync_args *);
 int	vop_stdgetwritemount(struct vop_getwritemount_args *);
 int	vop_stdgetpages(struct vop_getpages_args *);