start_renaming_dentry
EXPORT_SYMBOL(start_renaming_dentry);
err = start_renaming_dentry(&rd, 0, temp, &name);
err = start_renaming_dentry(&rd, 0, temp,
err = start_renaming_dentry(&rd, 0, temp, &QSTR(name2));
err = start_renaming_dentry(&rd, lookup_flags, old_child, &new_last);
int start_renaming_dentry(struct renamedata *rd, int lookup_flags,