diff -uNr linux-2.5.70/fs/namei.c linux-2.5.70-auto/fs/namei.c
--- linux-2.5.70/fs/namei.c	2003-06-12 11:35:52.000000000 +0100
+++ linux-2.5.70-auto/fs/namei.c	2003-06-12 15:46:15.000000000 +0100
@@ -434,23 +434,35 @@
 	return 1;
 }
 
-static int follow_mount(struct vfsmount **mnt, struct dentry **dentry)
+static int follow_mount(struct vfsmount **mnt, struct dentry **dentry, unsigned int flags)
 {
 	int res = 0;
-	while (d_mountpoint(*dentry)) {
-		struct vfsmount *mounted;
-		spin_lock(&dcache_lock);
-		mounted = lookup_mnt(*mnt, *dentry);
-		if (!mounted) {
+	for (;;) {
+
+		if (d_mountpoint(*dentry)) {
+			struct vfsmount *mounted;
+			spin_lock(&dcache_lock);
+			mounted = lookup_mnt(*mnt, *dentry);
+			if (!mounted) {
+				spin_unlock(&dcache_lock);
+				break;
+			}
+			*mnt = mntget(mounted);
 			spin_unlock(&dcache_lock);
+			dput(*dentry);
+			mntput(mounted->mnt_parent);
+			*dentry = dget(mounted->mnt_root);
+			res = 1;
+
+		} else if (d_automount_point(*dentry)) {
+			if (flags & LOOKUP_NOAUTOMOUNT)
+				break;
+			res = kern_automount(*mnt, *dentry);
+			if (res < 0)
+				break;
+		} else {
 			break;
 		}
-		*mnt = mntget(mounted);
-		spin_unlock(&dcache_lock);
-		dput(*dentry);
-		mntput(mounted->mnt_parent);
-		*dentry = dget(mounted->mnt_root);
-		res = 1;
 	}
 	return res;
 }
@@ -510,7 +522,7 @@
 		mntput(*mnt);
 		*mnt = parent;
 	}
-	follow_mount(mnt, dentry);
+	follow_mount(mnt, dentry, 0);
 }
 
 struct path {
@@ -643,7 +655,9 @@
 		if (err)
 			break;
 		/* Check mountpoints.. */
-		follow_mount(&next.mnt, &next.dentry);
+		err = follow_mount(&next.mnt, &next.dentry, 0);
+		if (err < 0)
+			goto out_dput;
 
 		err = -ENOENT;
 		inode = next.dentry->d_inode;
@@ -703,7 +717,10 @@
 		err = do_lookup(nd, &this, &next, 0);
 		if (err)
 			break;
-		follow_mount(&next.mnt, &next.dentry);
+		err = follow_mount(&next.mnt, &next.dentry, nd->flags & LOOKUP_NOAUTOMOUNT);
+		if (err < 0)
+			goto out_dput;
+
 		inode = next.dentry->d_inode;
 		if ((lookup_flags & LOOKUP_FOLLOW)
 		    && inode && inode->i_op && inode->i_op->follow_link) {
diff -uNr linux-2.5.70/fs/namespace.c linux-2.5.70-auto/fs/namespace.c
--- linux-2.5.70/fs/namespace.c	2003-06-12 11:35:52.000000000 +0100
+++ linux-2.5.70-auto/fs/namespace.c	2003-06-12 15:07:00.000000000 +0100
@@ -674,6 +674,43 @@
 	return err;
 }
 
+int kern_automount(struct vfsmount *on_mnt, struct dentry *on_dentry)
+{
+	struct nameidata nd;
+	struct vfsmount *mnt;
+	int err;
+
+	if (!on_dentry->d_inode || !S_ISDIR(on_dentry->d_inode->i_mode))
+		return -ENOTDIR;
+
+	mnt = on_dentry->d_op->d_automount(on_dentry);
+	if (IS_ERR(mnt))
+		return PTR_ERR(mnt);
+
+	memset(&nd,0,sizeof(nd));
+	nd.dentry = on_dentry;
+	nd.mnt = on_mnt;
+
+	down_write(&current->namespace->sem);
+	/* Something was mounted here while we slept */
+	while(d_mountpoint(nd.dentry) && follow_down(&nd.mnt, &nd.dentry))
+		;
+	err = -EINVAL;
+	if (!check_mnt(nd.mnt))
+		goto unlock;
+
+	/* Refuse the same filesystem on the same mount point */
+	err = -EBUSY;
+	if (nd.mnt->mnt_sb == mnt->mnt_sb && nd.mnt->mnt_root == nd.dentry)
+		goto unlock;
+
+	err = graft_tree(mnt, &nd);
+unlock:
+	up_write(&current->namespace->sem);
+	mntput(mnt);
+	return err;
+}
+
 static int copy_mount_options (const void __user *data, unsigned long *where)
 {
 	int i;
diff -uNr linux-2.5.70/fs/stat.c linux-2.5.70-auto/fs/stat.c
--- linux-2.5.70/fs/stat.c	2003-06-12 11:35:52.000000000 +0100
+++ linux-2.5.70-auto/fs/stat.c	2003-06-12 14:16:29.000000000 +0100
@@ -61,7 +61,7 @@
 	struct nameidata nd;
 	int error;
 
-	error = user_path_walk(name, &nd);
+	error = user_path_walk_stat(name, &nd);
 	if (!error) {
 		error = vfs_getattr(nd.mnt, nd.dentry, stat);
 		path_release(&nd);
@@ -74,7 +74,7 @@
 	struct nameidata nd;
 	int error;
 
-	error = user_path_walk_link(name, &nd);
+	error = user_path_walk_link_stat(name, &nd);
 	if (!error) {
 		error = vfs_getattr(nd.mnt, nd.dentry, stat);
 		path_release(&nd);
diff -uNr linux-2.5.70/fs/super.c linux-2.5.70-auto/fs/super.c
--- linux-2.5.70/fs/super.c	2003-06-12 11:35:53.000000000 +0100
+++ linux-2.5.70-auto/fs/super.c	2003-06-12 16:15:06.000000000 +0100
@@ -21,6 +21,7 @@
  */
 
 #include <linux/config.h>
+#include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
 #include <linux/acct.h>
@@ -697,6 +698,8 @@
 	return (struct vfsmount *)sb;
 }
 
+EXPORT_SYMBOL_GPL(do_kern_mount);
+
 struct vfsmount *kern_mount(struct file_system_type *type)
 {
 	return do_kern_mount(type->name, 0, type->name, NULL);
diff -uNr linux-2.5.70/include/linux/dcache.h linux-2.5.70-auto/include/linux/dcache.h
--- linux-2.5.70/include/linux/dcache.h	2003-06-12 11:32:25.000000000 +0100
+++ linux-2.5.70-auto/include/linux/dcache.h	2003-06-12 14:57:27.000000000 +0100
@@ -112,6 +112,7 @@
 	int (*d_delete)(struct dentry *);
 	void (*d_release)(struct dentry *);
 	void (*d_iput)(struct dentry *, struct inode *);
+	struct vfsmount *(*d_automount)(struct dentry *);
 };
 
 /* the dentry parameter passed to d_hash and d_compare is the parent
@@ -305,6 +306,11 @@
 	return dentry->d_mounted;
 }
 
+static inline int d_automount_point(struct dentry *dentry)
+{
+	return dentry->d_op && dentry->d_op->d_automount;
+}
+
 extern struct vfsmount *lookup_mnt(struct vfsmount *, struct dentry *);
 #endif /* __KERNEL__ */
 
diff -uNr linux-2.5.70/include/linux/namei.h linux-2.5.70-auto/include/linux/namei.h
--- linux-2.5.70/include/linux/namei.h	2003-06-12 11:32:24.000000000 +0100
+++ linux-2.5.70-auto/include/linux/namei.h	2003-06-12 15:02:19.000000000 +0100
@@ -31,6 +31,7 @@
 #define LOOKUP_CONTINUE		 4
 #define LOOKUP_PARENT		16
 #define LOOKUP_NOALT		32
+#define LOOKUP_NOAUTOMOUNT	64
 
 
 extern int FASTCALL(__user_walk(const char __user *, unsigned, struct nameidata *));
@@ -38,6 +39,10 @@
 	__user_walk(name, LOOKUP_FOLLOW, nd)
 #define user_path_walk_link(name,nd) \
 	__user_walk(name, 0, nd)
+#define user_path_walk_stat(name,nd) \
+	__user_walk(name, LOOKUP_FOLLOW|LOOKUP_NOAUTOMOUNT, nd)
+#define user_path_walk_link_stat(name,nd) \
+	__user_walk(name, LOOKUP_NOAUTOMOUNT, nd)
 extern int FASTCALL(path_lookup(const char *, unsigned, struct nameidata *));
 extern int FASTCALL(path_walk(const char *, struct nameidata *));
 extern int FASTCALL(link_path_walk(const char *, struct nameidata *));
@@ -52,4 +57,6 @@
 extern struct dentry *lock_rename(struct dentry *, struct dentry *);
 extern void unlock_rename(struct dentry *, struct dentry *);
 
+extern int kern_automount(struct vfsmount *mnt, struct dentry *dentry);
+
 #endif /* _LINUX_NAMEI_H */