VFS: Unexport do_kern_mount() and clean up simple_pin_fs()

Replace all module uses with the new vfs_kern_mount() interface, and fix up
simple_pin_fs().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 4e6eeb5..7b6dc03 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -210,7 +210,7 @@
 
 	/* try and do the mount */
 	kdebug("--- attempting mount %s -o %s ---", devname, options);
-	mnt = do_kern_mount("afs", 0, devname, options);
+	mnt = vfs_kern_mount(&afs_fs_type, 0, devname, options);
 	kdebug("--- mount result %p ---", mnt);
 
 	free_page((unsigned long) devname);
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 53c56e7..93a7821 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -48,7 +48,7 @@
 
 static void afs_destroy_inode(struct inode *inode);
 
-static struct file_system_type afs_fs_type = {
+struct file_system_type afs_fs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "afs",
 	.get_sb		= afs_get_sb,
diff --git a/fs/afs/super.h b/fs/afs/super.h
index ac11362..32de8cc 100644
--- a/fs/afs/super.h
+++ b/fs/afs/super.h
@@ -38,6 +38,8 @@
 	return sb->s_fs_info;
 }
 
+extern struct file_system_type afs_fs_type;
+
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_AFS_SUPER_H */