diff --git a/sys/compat/linprocfs/linprocfs_vnops.c b/sys/compat/linprocfs/linprocfs_vnops.c
index d402cfcaf0d8..d9ee5daf8ed3 100644
--- a/sys/compat/linprocfs/linprocfs_vnops.c
+++ b/sys/compat/linprocfs/linprocfs_vnops.c
@@ -70,7 +70,6 @@ extern int	procfs_kmemaccess __P((struct proc *));
 
 static int	linprocfs_access __P((struct vop_access_args *));
 static int	linprocfs_badop __P((void));
-static int	linprocfs_bmap __P((struct vop_bmap_args *));
 static int	linprocfs_close __P((struct vop_close_args *));
 static int	linprocfs_getattr __P((struct vop_getattr_args *));
 static int	linprocfs_inactive __P((struct vop_inactive_args *));
@@ -330,36 +329,6 @@ linprocfs_ioctl(ap)
 	return 0;
 }
 
-/*
- * do block mapping for pfsnode (vp).
- * since we don't use the buffer cache
- * for procfs this function should never
- * be called.  in any case, it's not clear
- * what part of the kernel ever makes use
- * of this function.  for sanity, this is the
- * usual no-op bmap, although returning
- * (EIO) would be a reasonable alternative.
- */
-static int
-linprocfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-	} */ *ap;
-{
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = ap->a_vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn;
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	return (0);
-}
-
 /*
  * linprocfs_inactive is called when the pfsnode
  * is vrele'd and the reference count goes
@@ -851,7 +820,6 @@ static struct vnodeopv_entry_desc linprocfs_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) linprocfs_access },
 	{ &vop_advlock_desc,		(vop_t *) linprocfs_badop },
-	{ &vop_bmap_desc,		(vop_t *) linprocfs_bmap },
 	{ &vop_close_desc,		(vop_t *) linprocfs_close },
 	{ &vop_create_desc,		(vop_t *) linprocfs_badop },
 	{ &vop_getattr_desc,		(vop_t *) linprocfs_getattr },
diff --git a/sys/fs/devfs/devfs_vnops.c b/sys/fs/devfs/devfs_vnops.c
index da9ff0f17cdd..41cdc187fa4d 100644
--- a/sys/fs/devfs/devfs_vnops.c
+++ b/sys/fs/devfs/devfs_vnops.c
@@ -685,7 +685,6 @@ static vop_t **devfs_vnodeop_p;
 static struct vnodeopv_entry_desc devfs_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) devfs_access },
-	{ &vop_bmap_desc,		(vop_t *) devfs_badop },
 	{ &vop_getattr_desc,		(vop_t *) devfs_getattr },
 	{ &vop_lookup_desc,		(vop_t *) devfs_lookup },
 	{ &vop_pathconf_desc,		(vop_t *) vop_stdpathconf },
@@ -705,31 +704,9 @@ static struct vnodeopv_desc devfs_vnodeop_opv_desc =
 
 VNODEOP_SET(devfs_vnodeop_opv_desc);
 
-#if 0
-int
-foo(ap)
-	struct vop_generic_args *ap;
-{
-	int i;
-
-	i = spec_vnoperate(ap);
-	printf("foo(%s) = %d\n", ap->a_desc->vdesc_name, i);
-	return (i);
-}
-#endif
-
 static vop_t **devfs_specop_p;
 static struct vnodeopv_entry_desc devfs_specop_entries[] = {
-#if 1
 	{ &vop_default_desc,		(vop_t *) spec_vnoperate },
-#else
-	{ &vop_default_desc,		(vop_t *) foo },
-	{ &vop_lock_desc,		(vop_t *) spec_vnoperate },
-	{ &vop_unlock_desc,		(vop_t *) spec_vnoperate },
-	{ &vop_lease_desc,		(vop_t *) spec_vnoperate },
-	{ &vop_strategy_desc,		(vop_t *) spec_vnoperate },
-	{ &vop_bmap_desc,		(vop_t *) spec_vnoperate },
-#endif
 	{ &vop_access_desc,		(vop_t *) devfs_access },
 	{ &vop_getattr_desc,		(vop_t *) devfs_getattr },
 	{ &vop_print_desc,		(vop_t *) devfs_print },
diff --git a/sys/fs/fdescfs/fdesc_vnops.c b/sys/fs/fdescfs/fdesc_vnops.c
index 2b29f1c60f03..5846ac78414f 100644
--- a/sys/fs/fdescfs/fdesc_vnops.c
+++ b/sys/fs/fdescfs/fdesc_vnops.c
@@ -557,7 +557,6 @@ fdesc_badop()
 static struct vnodeopv_entry_desc fdesc_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) vop_null },
-	{ &vop_bmap_desc,		(vop_t *) fdesc_badop },
 	{ &vop_getattr_desc,		(vop_t *) fdesc_getattr },
 	{ &vop_inactive_desc,		(vop_t *) fdesc_inactive },
 	{ &vop_lookup_desc,		(vop_t *) fdesc_lookup },
diff --git a/sys/fs/fifofs/fifo_vnops.c b/sys/fs/fifofs/fifo_vnops.c
index 79ee0aa7a3d9..3cd542555f93 100644
--- a/sys/fs/fifofs/fifo_vnops.c
+++ b/sys/fs/fifofs/fifo_vnops.c
@@ -72,7 +72,6 @@ static int	fifo_write __P((struct vop_write_args *));
 static int	fifo_ioctl __P((struct vop_ioctl_args *));
 static int	fifo_poll __P((struct vop_poll_args *));
 static int	fifo_kqfilter __P((struct vop_kqfilter_args *));
-static int	fifo_bmap __P((struct vop_bmap_args *));
 static int	fifo_pathconf __P((struct vop_pathconf_args *));
 static int	fifo_advlock __P((struct vop_advlock_args *));
 
@@ -91,7 +90,6 @@ static struct vnodeopv_entry_desc fifo_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) vop_ebadf },
 	{ &vop_advlock_desc,		(vop_t *) fifo_advlock },
-	{ &vop_bmap_desc,		(vop_t *) fifo_bmap },
 	{ &vop_close_desc,		(vop_t *) fifo_close },
 	{ &vop_create_desc,		(vop_t *) fifo_badop },
 	{ &vop_getattr_desc,		(vop_t *) vop_ebadf },
@@ -462,32 +460,6 @@ fifo_poll(ap)
 	return (revents);
 }
 
-/*
- * This is a noop, simply returning what one has been given.
- */
-static int
-fifo_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = ap->a_vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn;
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-	return (0);
-}
-
 /*
  * Device close routine
  */
diff --git a/sys/fs/ntfs/ntfs_vnops.c b/sys/fs/ntfs/ntfs_vnops.c
index 66ac7697f133..26d55bb2a26c 100644
--- a/sys/fs/ntfs/ntfs_vnops.c
+++ b/sys/fs/ntfs/ntfs_vnops.c
@@ -121,6 +121,7 @@ ntfs_putpages(ap)
 }
 #endif
 
+#if defined(__NetBSD__)
 /*
  * This is a noop, simply returning what one has been given.
  */
@@ -142,12 +143,9 @@ ntfs_bmap(ap)
 		*ap->a_bnp = ap->a_bn;
 	if (ap->a_runp != NULL)
 		*ap->a_runp = 0;
-#if !defined(__NetBSD__)
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-#endif
 	return (0);
 }
+#endif
 
 static int
 ntfs_read(ap)
@@ -871,7 +869,6 @@ struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
 	{ &vop_readdir_desc, (vop_t *)ntfs_readdir },
 	{ &vop_fsync_desc, (vop_t *)ntfs_fsync },
 
-	{ &vop_bmap_desc, (vop_t *)ntfs_bmap },
 	{ &vop_getpages_desc, (vop_t *) ntfs_getpages },
 	{ &vop_putpages_desc, (vop_t *) ntfs_putpages },
 	{ &vop_strategy_desc, (vop_t *)ntfs_strategy },
diff --git a/sys/fs/nwfs/nwfs_vnops.c b/sys/fs/nwfs/nwfs_vnops.c
index e7e6b720b26e..1e5361f4e883 100644
--- a/sys/fs/nwfs/nwfs_vnops.c
+++ b/sys/fs/nwfs/nwfs_vnops.c
@@ -78,7 +78,6 @@ static int nwfs_mkdir(struct vop_mkdir_args *);
 static int nwfs_rmdir(struct vop_rmdir_args *);
 static int nwfs_symlink(struct vop_symlink_args *);
 static int nwfs_readdir(struct vop_readdir_args *);
-static int nwfs_bmap(struct vop_bmap_args *);
 static int nwfs_strategy(struct vop_strategy_args *);
 static int nwfs_print(struct vop_print_args *);
 static int nwfs_pathconf(struct vop_pathconf_args *ap);
@@ -88,7 +87,6 @@ vop_t **nwfs_vnodeop_p;
 static struct vnodeopv_entry_desc nwfs_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) nwfs_access },
-	{ &vop_bmap_desc,		(vop_t *) nwfs_bmap },
 	{ &vop_open_desc,		(vop_t *) nwfs_open },
 	{ &vop_close_desc,		(vop_t *) nwfs_close },
 	{ &vop_create_desc,		(vop_t *) nwfs_create },
@@ -826,29 +824,6 @@ static int nwfs_strategy (ap)
 	return (error);
 }
 
-static int
-nwfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-	struct vnode *vp = ap->a_vp;
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize);
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-	return (0);
-}
 
 /*
  * How to keep the brain busy ...
diff --git a/sys/fs/portalfs/portal_vnops.c b/sys/fs/portalfs/portal_vnops.c
index 621059a1d478..b53c4cace80f 100644
--- a/sys/fs/portalfs/portal_vnops.c
+++ b/sys/fs/portalfs/portal_vnops.c
@@ -575,7 +575,6 @@ vop_t **portal_vnodeop_p;
 static struct vnodeopv_entry_desc portal_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) vop_null },
-	{ &vop_bmap_desc,		(vop_t *) portal_badop },
 	{ &vop_getattr_desc,		(vop_t *) portal_getattr },
 	{ &vop_lookup_desc,		(vop_t *) portal_lookup },
 	{ &vop_open_desc,		(vop_t *) portal_open },
diff --git a/sys/fs/procfs/procfs_vnops.c b/sys/fs/procfs/procfs_vnops.c
index dc53c764da00..f7201fbdd78d 100644
--- a/sys/fs/procfs/procfs_vnops.c
+++ b/sys/fs/procfs/procfs_vnops.c
@@ -317,36 +317,6 @@ procfs_ioctl(ap)
 	return 0;
 }
 
-/*
- * do block mapping for pfsnode (vp).
- * since we don't use the buffer cache
- * for procfs this function should never
- * be called.  in any case, it's not clear
- * what part of the kernel ever makes use
- * of this function.  for sanity, this is the
- * usual no-op bmap, although returning
- * (EIO) would be a reasonable alternative.
- */
-static int
-procfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-	} */ *ap;
-{
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = ap->a_vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn;
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	return (0);
-}
-
 /*
  * _reclaim is called when getnewvnode()
  * wants to make use of an entry on the vnode
@@ -1019,7 +989,6 @@ static struct vnodeopv_entry_desc procfs_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) procfs_access },
 	{ &vop_advlock_desc,		(vop_t *) procfs_badop },
-	{ &vop_bmap_desc,		(vop_t *) procfs_bmap },
 	{ &vop_close_desc,		(vop_t *) procfs_close },
 	{ &vop_create_desc,		(vop_t *) procfs_badop },
 	{ &vop_getattr_desc,		(vop_t *) procfs_getattr },
diff --git a/sys/fs/smbfs/smbfs_vnops.c b/sys/fs/smbfs/smbfs_vnops.c
index 1d0637e0dcc9..11bfd500c0c9 100644
--- a/sys/fs/smbfs/smbfs_vnops.c
+++ b/sys/fs/smbfs/smbfs_vnops.c
@@ -78,7 +78,6 @@ static int smbfs_mkdir(struct vop_mkdir_args *);
 static int smbfs_rmdir(struct vop_rmdir_args *);
 static int smbfs_symlink(struct vop_symlink_args *);
 static int smbfs_readdir(struct vop_readdir_args *);
-static int smbfs_bmap(struct vop_bmap_args *);
 static int smbfs_strategy(struct vop_strategy_args *);
 static int smbfs_print(struct vop_print_args *);
 static int smbfs_pathconf(struct vop_pathconf_args *ap);
@@ -92,7 +91,6 @@ static struct vnodeopv_entry_desc smbfs_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) smbfs_access },
 	{ &vop_advlock_desc,		(vop_t *) smbfs_advlock },
-	{ &vop_bmap_desc,		(vop_t *) smbfs_bmap },
 	{ &vop_close_desc,		(vop_t *) smbfs_close },
 	{ &vop_create_desc,		(vop_t *) smbfs_create },
 	{ &vop_fsync_desc,		(vop_t *) smbfs_fsync },
@@ -900,30 +898,6 @@ smbfs_strategy (ap)
 	return error;
 }
 
-static int
-smbfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-	struct vnode *vp = ap->a_vp;
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize);
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-	return (0);
-}
-
 int
 smbfs_ioctl(ap)
 	struct vop_ioctl_args /* {
diff --git a/sys/fs/specfs/spec_vnops.c b/sys/fs/specfs/spec_vnops.c
index 2940f404b779..95922c83d490 100644
--- a/sys/fs/specfs/spec_vnops.c
+++ b/sys/fs/specfs/spec_vnops.c
@@ -73,7 +73,6 @@ static struct vnodeopv_entry_desc spec_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) vop_ebadf },
 	{ &vop_advlock_desc,		(vop_t *) spec_advlock },
-	{ &vop_bmap_desc,		(vop_t *) spec_bmap },
 	{ &vop_close_desc,		(vop_t *) spec_close },
 	{ &vop_create_desc,		(vop_t *) vop_panic },
 	{ &vop_freeblks_desc,		(vop_t *) spec_freeblks },
diff --git a/sys/fs/unionfs/union_vnops.c b/sys/fs/unionfs/union_vnops.c
index 2ca72d74a2cb..9529da525760 100644
--- a/sys/fs/unionfs/union_vnops.c
+++ b/sys/fs/unionfs/union_vnops.c
@@ -69,7 +69,6 @@ SYSCTL_INT(_vfs, OID_AUTO, uniondebug, CTLFLAG_RD, &uniondebug, 0, "");
 
 static int	union_access __P((struct vop_access_args *ap));
 static int	union_advlock __P((struct vop_advlock_args *ap));
-static int	union_bmap __P((struct vop_bmap_args *ap));
 static int	union_close __P((struct vop_close_args *ap));
 static int	union_create __P((struct vop_create_args *ap));
 static int	union_fsync __P((struct vop_fsync_args *ap));
@@ -1823,31 +1822,6 @@ union_unlock(ap)
 	return(error);
 }
 
-/*
- *	union_bmap:
- *
- *	There isn't much we can do.  We cannot push through to the real vnode
- *	to get to the underlying device because this will bypass data
- *	cached by the real vnode.
- *
- *	For some reason we cannot return the 'real' vnode either, it seems
- *	to blow up memory maps.
- */
-
-static int
-union_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-	return(EOPNOTSUPP);
-}
-
 static int
 union_print(ap)
 	struct vop_print_args /* {
@@ -1941,7 +1915,7 @@ static struct vnodeopv_entry_desc union_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) union_access },
 	{ &vop_advlock_desc,		(vop_t *) union_advlock },
-	{ &vop_bmap_desc,		(vop_t *) union_bmap },
+	{ &vop_bmap_desc,		(vop_t *) vop_eopnotsupp },
 	{ &vop_close_desc,		(vop_t *) union_close },
 	{ &vop_create_desc,		(vop_t *) union_create },
 	{ &vop_fsync_desc,		(vop_t *) union_fsync },
diff --git a/sys/kern/vfs_default.c b/sys/kern/vfs_default.c
index e06dfa4a5c90..d5e1e2487882 100644
--- a/sys/kern/vfs_default.c
+++ b/sys/kern/vfs_default.c
@@ -80,6 +80,7 @@ vop_t **default_vnodeop_p;
 static struct vnodeopv_entry_desc default_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_eopnotsupp },
 	{ &vop_advlock_desc,		(vop_t *) vop_einval },
+	{ &vop_bmap_desc,		(vop_t *) vop_stdbmap },
 	{ &vop_close_desc,		(vop_t *) vop_null },
 	{ &vop_createvobject_desc,	(vop_t *) vop_stdcreatevobject },
 	{ &vop_destroyvobject_desc,	(vop_t *) vop_stddestroyvobject },
@@ -609,6 +610,30 @@ vop_stdgetvobject(ap)
 	return (vp->v_object ? 0 : EINVAL);
 }
 
+int
+vop_stdbmap(ap)
+	struct vop_bmap_args /* {  
+		struct vnode *a_vp;
+		daddr_t  a_bn;
+		struct vnode **a_vpp;
+		daddr_t *a_bnp;
+		int *a_runp;
+		int *a_runb;
+	} */ *ap;
+{
+
+	if (ap->a_vpp != NULL)
+		*ap->a_vpp = ap->a_vp;
+	if (ap->a_bnp != NULL)
+		*ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize);
+	if (ap->a_runp != NULL)
+		*ap->a_runp = 0;
+	if (ap->a_runb != NULL)
+		*ap->a_runb = 0;
+	return (0);
+}
+
+
 /* 
  * vfs default ops
  * used to fill the vfs fucntion table to get reasonable default return values.
diff --git a/sys/miscfs/fdesc/fdesc_vnops.c b/sys/miscfs/fdesc/fdesc_vnops.c
index 2b29f1c60f03..5846ac78414f 100644
--- a/sys/miscfs/fdesc/fdesc_vnops.c
+++ b/sys/miscfs/fdesc/fdesc_vnops.c
@@ -557,7 +557,6 @@ fdesc_badop()
 static struct vnodeopv_entry_desc fdesc_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) vop_null },
-	{ &vop_bmap_desc,		(vop_t *) fdesc_badop },
 	{ &vop_getattr_desc,		(vop_t *) fdesc_getattr },
 	{ &vop_inactive_desc,		(vop_t *) fdesc_inactive },
 	{ &vop_lookup_desc,		(vop_t *) fdesc_lookup },
diff --git a/sys/miscfs/fifofs/fifo_vnops.c b/sys/miscfs/fifofs/fifo_vnops.c
index 79ee0aa7a3d9..3cd542555f93 100644
--- a/sys/miscfs/fifofs/fifo_vnops.c
+++ b/sys/miscfs/fifofs/fifo_vnops.c
@@ -72,7 +72,6 @@ static int	fifo_write __P((struct vop_write_args *));
 static int	fifo_ioctl __P((struct vop_ioctl_args *));
 static int	fifo_poll __P((struct vop_poll_args *));
 static int	fifo_kqfilter __P((struct vop_kqfilter_args *));
-static int	fifo_bmap __P((struct vop_bmap_args *));
 static int	fifo_pathconf __P((struct vop_pathconf_args *));
 static int	fifo_advlock __P((struct vop_advlock_args *));
 
@@ -91,7 +90,6 @@ static struct vnodeopv_entry_desc fifo_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) vop_ebadf },
 	{ &vop_advlock_desc,		(vop_t *) fifo_advlock },
-	{ &vop_bmap_desc,		(vop_t *) fifo_bmap },
 	{ &vop_close_desc,		(vop_t *) fifo_close },
 	{ &vop_create_desc,		(vop_t *) fifo_badop },
 	{ &vop_getattr_desc,		(vop_t *) vop_ebadf },
@@ -462,32 +460,6 @@ fifo_poll(ap)
 	return (revents);
 }
 
-/*
- * This is a noop, simply returning what one has been given.
- */
-static int
-fifo_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = ap->a_vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn;
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-	return (0);
-}
-
 /*
  * Device close routine
  */
diff --git a/sys/miscfs/portal/portal_vnops.c b/sys/miscfs/portal/portal_vnops.c
index 621059a1d478..b53c4cace80f 100644
--- a/sys/miscfs/portal/portal_vnops.c
+++ b/sys/miscfs/portal/portal_vnops.c
@@ -575,7 +575,6 @@ vop_t **portal_vnodeop_p;
 static struct vnodeopv_entry_desc portal_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) vop_null },
-	{ &vop_bmap_desc,		(vop_t *) portal_badop },
 	{ &vop_getattr_desc,		(vop_t *) portal_getattr },
 	{ &vop_lookup_desc,		(vop_t *) portal_lookup },
 	{ &vop_open_desc,		(vop_t *) portal_open },
diff --git a/sys/miscfs/procfs/procfs_vnops.c b/sys/miscfs/procfs/procfs_vnops.c
index dc53c764da00..f7201fbdd78d 100644
--- a/sys/miscfs/procfs/procfs_vnops.c
+++ b/sys/miscfs/procfs/procfs_vnops.c
@@ -317,36 +317,6 @@ procfs_ioctl(ap)
 	return 0;
 }
 
-/*
- * do block mapping for pfsnode (vp).
- * since we don't use the buffer cache
- * for procfs this function should never
- * be called.  in any case, it's not clear
- * what part of the kernel ever makes use
- * of this function.  for sanity, this is the
- * usual no-op bmap, although returning
- * (EIO) would be a reasonable alternative.
- */
-static int
-procfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-	} */ *ap;
-{
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = ap->a_vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn;
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	return (0);
-}
-
 /*
  * _reclaim is called when getnewvnode()
  * wants to make use of an entry on the vnode
@@ -1019,7 +989,6 @@ static struct vnodeopv_entry_desc procfs_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) procfs_access },
 	{ &vop_advlock_desc,		(vop_t *) procfs_badop },
-	{ &vop_bmap_desc,		(vop_t *) procfs_bmap },
 	{ &vop_close_desc,		(vop_t *) procfs_close },
 	{ &vop_create_desc,		(vop_t *) procfs_badop },
 	{ &vop_getattr_desc,		(vop_t *) procfs_getattr },
diff --git a/sys/miscfs/specfs/spec_vnops.c b/sys/miscfs/specfs/spec_vnops.c
index 2940f404b779..95922c83d490 100644
--- a/sys/miscfs/specfs/spec_vnops.c
+++ b/sys/miscfs/specfs/spec_vnops.c
@@ -73,7 +73,6 @@ static struct vnodeopv_entry_desc spec_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) vop_ebadf },
 	{ &vop_advlock_desc,		(vop_t *) spec_advlock },
-	{ &vop_bmap_desc,		(vop_t *) spec_bmap },
 	{ &vop_close_desc,		(vop_t *) spec_close },
 	{ &vop_create_desc,		(vop_t *) vop_panic },
 	{ &vop_freeblks_desc,		(vop_t *) spec_freeblks },
diff --git a/sys/miscfs/union/union_vnops.c b/sys/miscfs/union/union_vnops.c
index 2ca72d74a2cb..9529da525760 100644
--- a/sys/miscfs/union/union_vnops.c
+++ b/sys/miscfs/union/union_vnops.c
@@ -69,7 +69,6 @@ SYSCTL_INT(_vfs, OID_AUTO, uniondebug, CTLFLAG_RD, &uniondebug, 0, "");
 
 static int	union_access __P((struct vop_access_args *ap));
 static int	union_advlock __P((struct vop_advlock_args *ap));
-static int	union_bmap __P((struct vop_bmap_args *ap));
 static int	union_close __P((struct vop_close_args *ap));
 static int	union_create __P((struct vop_create_args *ap));
 static int	union_fsync __P((struct vop_fsync_args *ap));
@@ -1823,31 +1822,6 @@ union_unlock(ap)
 	return(error);
 }
 
-/*
- *	union_bmap:
- *
- *	There isn't much we can do.  We cannot push through to the real vnode
- *	to get to the underlying device because this will bypass data
- *	cached by the real vnode.
- *
- *	For some reason we cannot return the 'real' vnode either, it seems
- *	to blow up memory maps.
- */
-
-static int
-union_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-	return(EOPNOTSUPP);
-}
-
 static int
 union_print(ap)
 	struct vop_print_args /* {
@@ -1941,7 +1915,7 @@ static struct vnodeopv_entry_desc union_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) union_access },
 	{ &vop_advlock_desc,		(vop_t *) union_advlock },
-	{ &vop_bmap_desc,		(vop_t *) union_bmap },
+	{ &vop_bmap_desc,		(vop_t *) vop_eopnotsupp },
 	{ &vop_close_desc,		(vop_t *) union_close },
 	{ &vop_create_desc,		(vop_t *) union_create },
 	{ &vop_fsync_desc,		(vop_t *) union_fsync },
diff --git a/sys/nfs/nfs_vnops.c b/sys/nfs/nfs_vnops.c
index 8a76122f312c..61fb9e2b19eb 100644
--- a/sys/nfs/nfs_vnops.c
+++ b/sys/nfs/nfs_vnops.c
@@ -121,7 +121,6 @@ static	int	nfs_mkdir __P((struct vop_mkdir_args *));
 static	int	nfs_rmdir __P((struct vop_rmdir_args *));
 static	int	nfs_symlink __P((struct vop_symlink_args *));
 static	int	nfs_readdir __P((struct vop_readdir_args *));
-static	int	nfs_bmap __P((struct vop_bmap_args *));
 static	int	nfs_strategy __P((struct vop_strategy_args *));
 static	int	nfs_lookitup __P((struct vnode *, const char *, int,
 			struct ucred *, struct proc *, struct nfsnode **));
@@ -138,7 +137,6 @@ static struct vnodeopv_entry_desc nfsv2_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) nfs_access },
 	{ &vop_advlock_desc,		(vop_t *) nfs_advlock },
-	{ &vop_bmap_desc,		(vop_t *) nfs_bmap },
 	{ &vop_close_desc,		(vop_t *) nfs_close },
 	{ &vop_create_desc,		(vop_t *) nfs_create },
 	{ &vop_fsync_desc,		(vop_t *) nfs_fsync },
@@ -2681,39 +2679,6 @@ nfs_commit(vp, offset, cnt, cred, procp)
 	return (error);
 }
 
-/*
- * Kludge City..
- * - make nfs_bmap() essentially a no-op that does no translation
- * - do nfs_strategy() by doing I/O with nfs_readrpc/nfs_writerpc
- *   (Maybe I could use the process's page mapping, but I was concerned that
- *    Kernel Write might not be enabled and also figured copyout() would do
- *    a lot more work than bcopy() and also it currently happens in the
- *    context of the swapper process (2).
- */
-static int
-nfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-	register struct vnode *vp = ap->a_vp;
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize);
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-	return (0);
-}
-
 /*
  * Strategy routine.
  * For async requests when nfsiod(s) are running, queue the request by
diff --git a/sys/nfsclient/nfs_vnops.c b/sys/nfsclient/nfs_vnops.c
index 8a76122f312c..61fb9e2b19eb 100644
--- a/sys/nfsclient/nfs_vnops.c
+++ b/sys/nfsclient/nfs_vnops.c
@@ -121,7 +121,6 @@ static	int	nfs_mkdir __P((struct vop_mkdir_args *));
 static	int	nfs_rmdir __P((struct vop_rmdir_args *));
 static	int	nfs_symlink __P((struct vop_symlink_args *));
 static	int	nfs_readdir __P((struct vop_readdir_args *));
-static	int	nfs_bmap __P((struct vop_bmap_args *));
 static	int	nfs_strategy __P((struct vop_strategy_args *));
 static	int	nfs_lookitup __P((struct vnode *, const char *, int,
 			struct ucred *, struct proc *, struct nfsnode **));
@@ -138,7 +137,6 @@ static struct vnodeopv_entry_desc nfsv2_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) nfs_access },
 	{ &vop_advlock_desc,		(vop_t *) nfs_advlock },
-	{ &vop_bmap_desc,		(vop_t *) nfs_bmap },
 	{ &vop_close_desc,		(vop_t *) nfs_close },
 	{ &vop_create_desc,		(vop_t *) nfs_create },
 	{ &vop_fsync_desc,		(vop_t *) nfs_fsync },
@@ -2681,39 +2679,6 @@ nfs_commit(vp, offset, cnt, cred, procp)
 	return (error);
 }
 
-/*
- * Kludge City..
- * - make nfs_bmap() essentially a no-op that does no translation
- * - do nfs_strategy() by doing I/O with nfs_readrpc/nfs_writerpc
- *   (Maybe I could use the process's page mapping, but I was concerned that
- *    Kernel Write might not be enabled and also figured copyout() would do
- *    a lot more work than bcopy() and also it currently happens in the
- *    context of the swapper process (2).
- */
-static int
-nfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-	register struct vnode *vp = ap->a_vp;
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize);
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-	return (0);
-}
-
 /*
  * Strategy routine.
  * For async requests when nfsiod(s) are running, queue the request by
diff --git a/sys/ntfs/ntfs_vnops.c b/sys/ntfs/ntfs_vnops.c
index 66ac7697f133..26d55bb2a26c 100644
--- a/sys/ntfs/ntfs_vnops.c
+++ b/sys/ntfs/ntfs_vnops.c
@@ -121,6 +121,7 @@ ntfs_putpages(ap)
 }
 #endif
 
+#if defined(__NetBSD__)
 /*
  * This is a noop, simply returning what one has been given.
  */
@@ -142,12 +143,9 @@ ntfs_bmap(ap)
 		*ap->a_bnp = ap->a_bn;
 	if (ap->a_runp != NULL)
 		*ap->a_runp = 0;
-#if !defined(__NetBSD__)
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-#endif
 	return (0);
 }
+#endif
 
 static int
 ntfs_read(ap)
@@ -871,7 +869,6 @@ struct vnodeopv_entry_desc ntfs_vnodeop_entries[] = {
 	{ &vop_readdir_desc, (vop_t *)ntfs_readdir },
 	{ &vop_fsync_desc, (vop_t *)ntfs_fsync },
 
-	{ &vop_bmap_desc, (vop_t *)ntfs_bmap },
 	{ &vop_getpages_desc, (vop_t *) ntfs_getpages },
 	{ &vop_putpages_desc, (vop_t *) ntfs_putpages },
 	{ &vop_strategy_desc, (vop_t *)ntfs_strategy },
diff --git a/sys/nwfs/nwfs_vnops.c b/sys/nwfs/nwfs_vnops.c
index e7e6b720b26e..1e5361f4e883 100644
--- a/sys/nwfs/nwfs_vnops.c
+++ b/sys/nwfs/nwfs_vnops.c
@@ -78,7 +78,6 @@ static int nwfs_mkdir(struct vop_mkdir_args *);
 static int nwfs_rmdir(struct vop_rmdir_args *);
 static int nwfs_symlink(struct vop_symlink_args *);
 static int nwfs_readdir(struct vop_readdir_args *);
-static int nwfs_bmap(struct vop_bmap_args *);
 static int nwfs_strategy(struct vop_strategy_args *);
 static int nwfs_print(struct vop_print_args *);
 static int nwfs_pathconf(struct vop_pathconf_args *ap);
@@ -88,7 +87,6 @@ vop_t **nwfs_vnodeop_p;
 static struct vnodeopv_entry_desc nwfs_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) vop_defaultop },
 	{ &vop_access_desc,		(vop_t *) nwfs_access },
-	{ &vop_bmap_desc,		(vop_t *) nwfs_bmap },
 	{ &vop_open_desc,		(vop_t *) nwfs_open },
 	{ &vop_close_desc,		(vop_t *) nwfs_close },
 	{ &vop_create_desc,		(vop_t *) nwfs_create },
@@ -826,29 +824,6 @@ static int nwfs_strategy (ap)
 	return (error);
 }
 
-static int
-nwfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		daddr_t  a_bn;
-		struct vnode **a_vpp;
-		daddr_t *a_bnp;
-		int *a_runp;
-		int *a_runb;
-	} */ *ap;
-{
-	struct vnode *vp = ap->a_vp;
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn * btodb(vp->v_mount->mnt_stat.f_iosize);
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	if (ap->a_runb != NULL)
-		*ap->a_runb = 0;
-	return (0);
-}
 
 /*
  * How to keep the brain busy ...
diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h
index 18e19f19e89e..6c09a113f889 100644
--- a/sys/sys/vnode.h
+++ b/sys/sys/vnode.h
@@ -620,6 +620,7 @@ int	vfs_object_create __P((struct vnode *vp, struct proc *p,
 void	vfs_timestamp __P((struct timespec *));
 void	vfs_write_resume __P((struct mount *mp));
 void	vfs_write_suspend __P((struct mount *mp));
+int	vop_stdbmap __P((struct vop_bmap_args *));
 int	vop_stdgetwritemount __P((struct vop_getwritemount_args *));
 int	vop_stdinactive __P((struct vop_inactive_args *));
 int	vop_stdislocked __P((struct vop_islocked_args *));
diff --git a/sys/ufs/mfs/mfs_vnops.c b/sys/ufs/mfs/mfs_vnops.c
index 3c6a236a8600..5e9f1d72d236 100644
--- a/sys/ufs/mfs/mfs_vnops.c
+++ b/sys/ufs/mfs/mfs_vnops.c
@@ -53,7 +53,6 @@
 #include <ufs/mfs/mfs_extern.h>
 
 static int	mfs_badop __P((struct vop_generic_args *));
-static int	mfs_bmap __P((struct vop_bmap_args *));
 static int	mfs_close __P((struct vop_close_args *));
 static int	mfs_fsync __P((struct vop_fsync_args *));
 static int	mfs_freeblks __P((struct vop_freeblks_args *));
@@ -69,7 +68,7 @@ static int	mfs_getpages __P((struct vop_getpages_args *)); /* XXX */
 vop_t **mfs_vnodeop_p;
 static struct vnodeopv_entry_desc mfs_vnodeop_entries[] = {
 	{ &vop_default_desc,		(vop_t *) mfs_badop },
-	{ &vop_bmap_desc,		(vop_t *) mfs_bmap },
+	{ &vop_bmap_desc,		(vop_t *) vop_stdbmap },
 	{ &vop_close_desc,		(vop_t *) mfs_close },
 	{ &vop_createvobject_desc,	(vop_t *) vop_stdcreatevobject },
 	{ &vop_destroyvobject_desc,	(vop_t *) vop_stddestroyvobject },
@@ -291,29 +290,6 @@ mfs_doio(bp, mfsp)
 	bufdone(bp);
 }
 
-/*
- * This is a noop, simply returning what one has been given.
- */
-static int
-mfs_bmap(ap)
-	struct vop_bmap_args /* {
-		struct vnode *a_vp;
-		ufs_daddr_t  a_bn;
-		struct vnode **a_vpp;
-		ufs_daddr_t *a_bnp;
-		int *a_runp;
-	} */ *ap;
-{
-
-	if (ap->a_vpp != NULL)
-		*ap->a_vpp = ap->a_vp;
-	if (ap->a_bnp != NULL)
-		*ap->a_bnp = ap->a_bn;
-	if (ap->a_runp != NULL)
-		*ap->a_runp = 0;
-	return (0);
-}
-
 /*
  * Memory filesystem close routine
  */