mount_subtree 1430 fs/btrfs/super.c root = mount_subtree(mnt, subvol_name); mount_subtree 3326 fs/namespace.c EXPORT_SYMBOL(mount_subtree); mount_subtree 232 fs/nfs/nfs4super.c dentry = mount_subtree(root_mnt, export_path); mount_subtree 2266 include/linux/fs.h extern struct dentry *mount_subtree(struct vfsmount *mnt, const char *path);